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Electrical Equipment, Troubleshooting & Maintenance
Kuala Lumpur –Malaysia 22-26/3/2015
Electrical Engineering
Oil, Gas and
Petrochemical
Mechanical Engineering
Electrical Engineering
Electronic ICT
Instrumentation Automation and Process Control
Data Communications & Networking
Chemistry &
Laboratory
Cement Industry
Project management
Supply chain management
www.petratrainingg.com
Gas Turbine Training Course
Design , Operation & Maintenance
For
WADI AL JIZZI POWER COMPANY
All rights reserved / Omar Zaareer 2015
Petra Training Group
Part #4:
Gas Turbine Auxiliary Systems
4
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5) Auxiliary Systems:
• Gas Turbine Lubricating Oil System
• Hydraulic Supply System and Inlet Guide Vane
• Atomizing Air System
• Fuel Purge.
• Cooling and Sealing Air System.
Gas Turbine Topics to be discussed
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Lube Oil System
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Large gas turbines generally have separate external circulation systems.
Gas turbine parts are made to fit with little clearance.
The shaft must be free to rotate, but not vibrate radially.
Bearings are used to support the weight of the shafts, rotors and prevent them from vibrating radially.
Without a lubricant, the bearing surface would wear out quickly.
Oil is supplied to bearing through machined holes and grooves.
نظام یقوم بتزوید الزیت لكل من:
الضاغط كراسي تحمیل)Compressor bearing(
التوربینة تحمیل راسي ك)Turbine bearing(
المولد تحمیل كراسي)Generator bearing(
Control Oil
Lube Oil System
Introduction
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Lube Oilأھمیــة نظـــام
The oil forms a film between the rotating shaft and the bearing that separates them.
This reduces friction and heat.
Some heat is generated and the lubricant must carry it away.
To re-use this oil, it must be cooled, cleaned and re-pressurized.
Lube Oil System
وظیفة الزیت داخل كراسي التحمیل:
ي ھذا الزیت بعمل طبقة رقیقة داخل كراسیقومالتحمیل تفصل بین
اكالجزء الثابت والجزء الدوار لتقلیل االحتك ى درجة بتبرید كراسي التحمیل والحفاظ علیقوم
.حرارتھا ي بأزالة الملوثات والشوائب من داخل كراسیقوم
.التحمیل
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احتكاك على سطوح جافة
االحتكاك على سطوح مفصولة بالزیت
طبقة زیت
مع المعادن تالمس بمنع الزیت طبقة تقوم ھذه على الحفاظ تم اذا بحیث البعض بعضھا موائع احتكاك ھو االحتكاك یكون الطبقة اضرار من یخفف مما معادن احتكاك ولیس
الفیزیائي التالمس
Lube Oilأھمیــة نظـــام
lube oil System
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Remember: The function of oil lubrication systemTo provide clean, high- grade lubricating oil with suitable pressure and temperature.
Components of the system:
1. Oil tank
2. Oil pumps
3. Oil filters& strainer
4. Oil cooler
5. Oil heater
6. Control valves and protection devices
Major system components
Lube Oil System
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Remember • This lubrication system, complete with
tank, pumps, coolers, filters, valves and various control and protection devices, furnishes normal lubrication and absorption of heat rejection load of the gas turbine.
• Lubricating fluid is circulated to the three main turbine bearings, generator bearings, and to the turbine accessory gear and fuel pump.
• Also, lubricating fluid is supplied to the starting means torque converter for use as hydraulic fluid as well as for lubrication.
• Additionally, a portion of the pressurized fluid is diverted and filtered again for use by hydraulic control devices as control fluid.
Lube Oil System
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A Turbine Oil flow system
Oil lubrication system Components
Lube Oil System
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lubrication system Schematic
Lube Oil System
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ك لبشك الزیت مستوى ارتفع اذا أما•لشاشا تصل )Trip( اشارة فان بیرأب لتقوم الحمایة وانظمة التحكم ت
لسماحا وتمنع الغازیة التوربینة طفاء اعاالرتف ھذا ان حیث تشغیلھا بأعادة لىع یدل الزیت مستوى في الكبیر
المبردات من للماء تسریب ھناك ان یؤثر مما الزیت نظام الى ویدخل
نظاوال والفالتر التحمیلكراسي على.بأكملھ م
ما یعمل كخزان تجمیع وتزوید للزیت وك•
.یعمل كنازع للھواء
:معینةالزیت محدد بمستویات مستوى •
الى قیمة محددة یصل بحیث اذا انخفض •
وكما للتحذیر ) pretrip(تصل اشارة
یت الزتصل ھذه االشارة اذا ارتفع مستوى
.عن المحدد
Lube Oil System
Lube Oil Tank
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یقع ھذا المبرد على خطوط النظام المزودة
. د للزیت وقد یحتوي النظام على اكثر من مبر
یقوم صمام تحكم حراري بتنظیم حرارة جزء
اشرة من زیت التزلیق عن طریق تزویده بزیت مب.من المبرد
Lube Oil System
Lube Oil Cooler
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Lube Oil System
Lube Oil Filters
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��ـــزة ق��اس ومراق��ة احلــرارة والضغط
نع والثانویة األساسیة المضخات اداء مراقبة یتم
غطالض ھذا قراءة یتم حیث الضغط قیاس اجھزة طریق.خةالمض على محلیا المثبت الضغط مقیاس طریق عن
سيلكرا المزود للزیت الضغط مراقبة یتم وكذلك
االشارات بارسال تقوم من ھي االجھزةوھذه التحمیل .المناسبة االجراءاتاتخاذ یتم حیث التحكم لشاشات
حال في تفعیلھا یتم الغازیة التوربینة اطفاء اشارة
من ارسالھا یتم اشارت ثالثة اصل من اشارتین وصول.الضغط قیاس اجھزة
اراش ارسال ویتم الحرارة قیاس اجھزة توجد وكذلك جةدر وصول حال في التحكم لنظام تحذیریھ ات
.المحدده الدرجة الى الزیت حرارة
Lube Oil System
Lube fluid temperatures are indicated on the thermocouples which may be located in the bearing header, bearing drains, and the oil tank.
A thermocouple, LT_OT-1A, prevents turbine start-up if the temperature of the lubricant is lower than the switch setting.
Lubricating fluid for the main, auxiliary and emergency pumps is supplied from the reservoir, while lubricating fluid used for control is supplied from the bearing header.
This lubricant must be regulated to the proper, predetermined pressure to meet the requirements of the main bearings and the accessory lube system, as well as the hydraulic control and trip circuits.
lubricating fluid is filtered and cooled before being piped to the bearing header.
Instrumentations
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Lube Oil System PID of another unit
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Lube Oil System PID of another unit
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• The system is ventilated through a mist eliminator mounted on top of the lube oil reservoir. slight negative pressure is maintained in the system by the motor driven fan 88 QV-1 or 88QV-2 pulling air through the mist eliminator.
• The separation of oil droplets shall be made by the coalescing filters. In the suction line of the blower a filters with differential pressure transmitters 96 QQ-10 and 96 QQ-20 are fitted. In case of filter contamination the differential pressure transmitter indicates an alarm. This negative pressure draws sealing air through the gas turbine bearing seals.
• A tap and a pressure transmitter 96 QV-1 is provided on the mist eliminator to permit monitoring tank pressure. A diaphragm is upstream of fan for the mist eliminator and is used to regulate tank pressure.
Lube Oil System
Mist eliminator (GE 9E)
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Lube Oil System
Mist eliminator (GE 9E)
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Review
Lube Oil System
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Lube Oil System
Review
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Lube Oil System
Review
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Lube Oil System
Review
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Lube Oil System
Review
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Lube Oil System
Review
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Review مراجعة سریعة
Lube Oil System
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Lube Oil System
Review
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Lube Oil System
Review
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Lube Oil System
Review
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Hydraulic Supply System and Inlet Guide Vane
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The main hydraulic supply system utilizes turbine lube oil to supplythe high pressure fluid for operating the fuel control valves, or otherdevices.
The hydraulic supply system regulates a supply pressure ofapproximately 1500 psi suitable to modulate oil fuel control valve.
The system filters the oil for servovalve use.
Accumulators to provide transient flow and prevent hydraulicpressure spikes to devices to protect the turbine if hydraulic pressure
becomes inadequate to support essential control functions.
Hydraulic Supply System and Inlet Guide Vane
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Major devices and functional description
• Main pump ,
The primary source of high pressure oil is an accessory gear drivenpressure compensated piston pump. The pump's pressure compensatoris designed VPR 3-1.
• Auxiliary pump
A motor driven 88 HQ-1 fixed displacement pump is provided as a backup to the main pump. While the main pump is at low speed, during thenormal starting sequence, the auxiliary pump runs until the 14 HS speedsensor indicates minimum governing speed is reached. Any time themain pump fails to maintain adequate pressure, as sensed by 63 HQ-1pressure switch, the auxiliary pump is started. When this pump isinitiated by the 63 HQ-1 pressure switch, it will continue to run until shutdown manually.
Hydraulic Supply System and Inlet Guide Vane
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Hydraulic Supply System and Inlet Guide Vane
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Variable Inlet Guide Vane System
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Variable Inlet Guide Vane System
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Variable Inlet Guide Vane System
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Variable Inlet Guide Vane System
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Variable Inlet Guide Vane System
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Variable Inlet Guide Vane System
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Variable Inlet Guide Vane System
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Variable Inlet Guide Vane System
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Variable Inlet Guide Vane System
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Variable Inlet Guide Vane System
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Variable Inlet Guide Vane System
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Variable Inlet Guide Vane System
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Variable Inlet Guide Vane System
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Atomizing Air System
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Atomizing Air System
Function The atomizing air system provides
sufficient pressure in the airatomizing chamber of the fuelnozzle body to maintain the properratio of atomizing air pressure tocompressor discharge pressure atapproximately 1.2 or greater overthe full operating range of theturbine.
Since the output of the mainatomizing air compressor, driven bythe accessory gear, is low at turbinefiring speed, a starting atomizing aircompressor provides a similarpressure ratio during the firing andwarm-up period of the startingcycle, and during a portion of theaccelerating cycle.
Major system components:
the main atomizing air compressor
starting atomizing air compressor, atomizing air heat exchanger(s) and an air filter.
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Atomizing Air System
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Atomizing Air System
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Atomizing Air System
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Atomizing Air System
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Atomizing Air System
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Atomizing Air System
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Atomizing Air System
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Atomizing Air System
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Atomizing Air System
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Atomizing Air System
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Atomizing Air System
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Cooling and Sealing Air System
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Cooling and Sealing Air System
Introduction
The cooling and sealing air system provides the necessary air flow:
from the gas turbine compressor
TO other parts of the gas Turbine rotor Stator Sealing of the turbine bearings
To prevent excessive temperature buildup in these parts during normal operation and for sealing of the turbine bearings.
Air from two centrifugal type blowers is used to cool the turbine exhaust frame. These two motor fans are part of a cooling system located on a base, near the lower part of the gas turbine exhaust system duct.
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Cooling and sealing functions:
Sealing of the turbine bearings.
Cooling of internal turbine parts subjected to high temperature.
Cooling of the turbine outer shell and exhaust frame.
Providing an operating air supply for air operated valves.
Cooling and Sealing Air System
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Cooling and Sealing Air System
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Cooling and Sealing Air System
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Cooling and Sealing Air System
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Cooling and Sealing Air System
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Cooling and Sealing Air System
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Cooling and Sealing Air System
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Cool the turbine shell and exhaust frame
Cooling and Sealing Air SystemExhaust Frame Blower
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Cooling and Sealing Air System
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Cooling and Sealing Air System
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Cooling and Sealing Air System
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Cooling and Sealing Air System
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Cooling and Sealing Air System
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Cooling and Sealing Air System
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Cooling and Sealing Air System
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لمــاذا نحتــاج التبــریــد؟
.إن كفاءة التوربین تعتمد على ارتفاع حرارة الھواء الداخل إلى التوربین -.النقطة السابقة من الممكن أن تكون مفیدة بناءا على نوع المعدن المستخدم و المتاح-من خالل تأمین تبرید مستمرو كافي فإتھ من الممكن رفع حرارة الھواء من دون المخاطرة بذوبان أجزاء -
.التوربین
Cooling and Sealing Air System
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Cooling and Sealing Air System
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Cooling and Sealing Air System
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Cooling and Sealing Air System
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Cooling and Sealing Air System
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:الغــرض مــن النضــام من أخرى أجزاء و المتحركة و الثابتة الشفرات حرارة خفض على العمل ھو التبرید نظام من الھدف إن
و “Bearing“ال عند عزل تأمین العزل من الھدف أن كما ,الضاغطة ھواء استخدام طریق عن التوربین.التبرید ھواء مجاري
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نقــاش مفتـوح واسئلـــة
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)أعـــداد وتقدیــم (
المھنـدس عمـر الـزعـاریــر / المـدرب
شـركـة جنـوب كـوریـا –مـدیـر التشغیـل والكفـاءة
Eng. Omar Za'areer
1
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Part #1 : Power Plants Primers (مقـــدمـة عـامـة فـي محطــات الطــاقــة)
Part #2: Gas Turbine Major Components
Part #4: Gas Turbine Auxiliary Systems
Part #5: Gas Turbine Maintenance and Troubleshooting
Part #6: Gas Turbine Operation
Part #3: Simple Cycle Improvement
Gas Turbine Training Course
Design , Operation & Maintenance
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Part #1
مقـــدمـة عـامـة فـي محطــات الطــاقــة
Power Plants Primers
1
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Part #1
مقـــدمـة عـامـة فـي محطــات الطــاقــة
Power Plants Primers
1
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مقـــدمـة عـامـة فـي محطــات الطــاقــة
Common Terms & Abbreviationsالمصطلحات و االختصارات -1
Power Plant Historyنشــأة محطــات الطــاقــة -3
Power Plant Formsاشكـال محطــات الطــاقــة -5
Power Plant Conceptionمفھـوم محطــات الطــاقــة -4
-PID )(Symbols مقدمة لـ -2 Piping
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االختصـــارات و المصطلحــات -1 1- COMMON TERMS AND ABBREVIATIONS
GT - Gas Turbine
• CT – Combustion Turbine
• CTG – Combustion Turbine Generator
• GTG – Gas Turbine Generator
ST - Steam Turbine
• STG – Steam Turbine Generator
HRSG – Heat Recovery Steam Generator
CCR – Central Control Room
DCS – Distributed Control System
EWS/OWS – Engineering/Operator Work Station
PLC- Programmable Logic Controller
BMS – Burner Management System
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1- COMMON TERMS AND ABBREVIATIONS BOP – Balance of Plant
HVAC – Heating, Ventilation and Air Conditioning
Simple Cycle – operating CTG only to make electricity and exhausting all CTG exhaust heat to atmosphere.
.الى الجو تشغیل التوربین الغازي لتولید الكھرباء بحیث یتم طرح الغازات العادمة: الدورة البسیطة*
Combined Cycle – capturing exhaust heat from CTG in HRSG to make steam and drive ST. Both CTG and STG make electricity.
وجیھ البخار ثم ت. استخدام الغازات العادمة من التوربین الغازي في تولید البخار في المرجل: دورة المركبة*. الى توربین بخاري لتولید الكھرباء
Cogeneration – producing both electricity and process steam
COD – Commercial Operation Date
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-PID )(Symbols مقدمة لـ -2 Piping
1) Letter Symbols
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-PID )(Symbols مقدمة لـ -2 Piping
1) Letter Symbols
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-PID )(Symbols مقدمة لـ -2 Piping1) PID Symbols
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-PID )(Symbols مقدمة لـ -2 Piping1) PID Symbols
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-PID )(Symbols مقدمة لـ -2 Piping1) PID Symbols
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-PID )(Symbols مقدمة لـ -2 Piping1) PID Symbols
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-PID )(Symbols مقدمة لـ -2 Piping1) PID Symbols
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-PID )(Symbols مقدمة لـ -2 Piping1) PID Symbols
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-PID )(Symbols مقدمة لـ -2 Piping1) PID Symbols (Valves)
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-PID )(Symbols مقدمة لـ -2 Piping1) PID Symbols (Valves)
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-PID )(Symbols مقدمة لـ -2 Piping1) PID Symbols (Valves)
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-PID )(Symbols مقدمة لـ -2 Piping1) PID Symbols (Examples)
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Gas Turbine History
1939أول استخدام للتوربین الغازي في محطات الطاقة الكھربائیة كان.
2تطور بعد ذللك في مجال الطیران خالل الحرب العالمیة
محطات ( تطور بعد ذلك بشكل ثابت في مجال الطیران و في استخدامات خاصة اخرى كمحرك.... ).محطات ضخ الغاز , الطاقة
Braytonتعمل التوربینات الغازیة على مبداء • Cycle
Rankineمبداء محطات التولید التقلیدیة على تعمل • Cycle
• Brayton cycle less efficient than Rankine Cycle
Power Plant Historyنشــأة محطــات الطــاقــة -3
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Gas Turbine History (cont’d)التقدم في استمر التقدم بتحسین كفاءة التوربین الغازي عن طریق لذلك•
Aerodynamic design, الغازات دینامیكا علم
Combustion control,االحتراق عملیة في التحكم
Compressor and turbine blade design, العنافات تصمیم
Metallurgyعالیة درجات تتحمل مواد ایجاد ( المعادن علم(
Closer tolerances between rotating blades and stationaryparts. كذلك و الضاغط مراحل بین ) الھواء تھریب ( الضیاعات تقلقل .التوربین
نتیجة امكانیة رفع حرارة % 35) اكبر من (كفاءة التوربین الغازي اصبحت تفوق •.مدخل التوربین
Power Plant Historyنشــأة محطــات الطــاقــة -3
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Combined Cycle Power Plant (CCPP) History
عام السابقة 20اصبحت منتشرة وواسعة اآلستخدام خالل.
GTG, STG and HRSG المستخدمة في محطات التولید اكثر كفاءة من محطات التولید. البخاریة
اقل تكلفة Less capital cost
بالمقارنة باالستطاعة ( اقل تكلفة بناء و زمن البناء اقلMW (
بالمقارنة باالستطاعة ( اقل ) أرض(تحتاج الى مساحةMW (
بالمقارنة باالستطاعة ( ) تلوث الھواء ( اقل انبعاثاتMW (
Power Plant Historyنشــأة محطــات الطــاقــة -3
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Power Plant Formsاشكـال محطــات الطــاقــة -5
Power Plant Conceptionمفھـوم محطــات الطــاقــة -4
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الجــزء األول
المحطــــة الحـــراریــــة
Conventional Steam Power Plant
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المكونات األساسیة للمحطات الحراریة
:تتكون المحطات الحراریة بشكل رئیسي ممایلي
Boiler )غالیة(مرجل • (or Reactor)
Steam Turbineتوربین بخاري • and Condenser
Boiler Feed Pumpمضخة تغذیة •
Cooling Systemمكثف •
Balance of Plant Equipment (e.g., fuel system, waterاألنظمة المساعدة •
treatment plant)
Conventional Steam Power Plant
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Rankine Cycle Diagram
Conventional Steam Power Plant
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Rankine Cycle - Basic T-s Diagram
Conventional Steam Power Plant
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Rankine Cycle – T-s Diagram with Superheat
Conventional Steam Power Plant
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الجــزء الثـانـي
الـدورة البسیطـــة
Simple Cycle Power Plant
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المكونات األساسیة لمحطات الدورة البسیطة
Compressorالضــاغــط •
Combustorغـرفــة األحتـراق •
Turbineالتــوربیــن الغـــازي •
Accessory Drive Assemblyاألنظمـــة المســاعـــدة •
Simple Cycle Power Plant
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Gas Turbine SC Schematic
Simple Cycle Power Plant
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Brayton Cycle
COMPRESSOR
AIR
COMBUSTIONCHAMBER
EXHAUST
WORK
FUEL
TURBINE
Simple Cycle Power Plant
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1-2 compression process : یزید الضغط و یقل الحجم
1-2 compression process
Brayton Cycle
Simple Cycle Power Plant
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2-3 Combustion process:
الوقود فترتفع الحرارة مع ثبات الضغط/یحترق مزیج الھواء
2-3 Combustion process
Brayton Cycle
Simple Cycle Power Plant
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3-4 Turbine (Expansion):
3-4 Turbine (Expansion):.تتحول الى طاقة حركیة تحرك التوربین و المولد) عاليضغط حرارة عالیة و (الطاقة المختزنة في الغازات
Brayton Cycle
Simple Cycle Power Plant
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1-2 compression process : pressure increased & volume reduced.
2-3 Combustion process: fuel air mixture burns, temp & volume increase under constant pressure.
3-4 Turbine (Expansion):The hot gas which storing energy is converted to work inside the turbine(rotation, speed and torque).
4-1 Exhaust air rejected & new air is induced. الغازات العادمة تطرح الى الجو.
Brayton CycleSimple Cycle Power Plant
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Brayton Cycle T-s Diagram
Simple Cycle Power Plant
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الجـــزء الثـالـث
الـــدورة المـــركبــة
COMBINED CYCLE
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Combined
Part #1 with Part #2
الـــدورة المـــركبــة
COMBINED CYCLE
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CO
MP
RE
SS
OR
AIR
CO
MB
US
TIO
NC
HA
MB
ER
EX
HA
US
TWO
RK
FU
EL
TU
RB
INE
+ CC Plant
Combined Cycle Power Plant
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المكونات األساسیة لمحطات الدورة المركبة
تتكون الدورة البسیطة بشكل رئیسي ممایلي:(CTG)توربین غازي مع مولد •
Heat Recovery Steam Generator (HRSG)مرجل •
Steam Turbine Generator (STG)توربین بخاري مع مولد •
cooled)watercooled or airCondenser (eitherمكثف •
Balance of Plant (BOP) equipmentاألنظمة المساعدة •
Combined Cycle Power Plant
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Combined Cycle Components
Gas Turbine (Brayton) CycleCTGتوربین غازي مع مولد •
) الدورة البسیطة(الغازات العادمة تطرح الى الجو •
Steam and Steam Turbine (Rankine) Cycleم توجة الغازات العادمة الى المرجل إلنتاج بخار محمص یستخد•
. النتاج الكھرباء بواسطة التوربین البخاري
. تتطلب مضخات و مكثف و نظام تبرید•
Combined Cycle Power Plant
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Combined Cycle Schematic (Diagram)
Combined Cycle Power Plant
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Combined Cycle Schematic (Diagram)
Combined Cycle Power Plant
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Cycles Comparison
Combined Cycle Power Plant
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Combined Cycle T-h Diagram
This represents theheat recovered fromthe HRSG anddelivered as steam tothe steam turbine.
Combined Cycle Power Plant
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Combined Cycle
Overview the Process
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Schematic Drawing
Combined Cycle Power Plant
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Combined Cycle Overview
Combined Cycle Power Plant
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Combined Cycle Overview
Combined Cycle Power Plant
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Combined Cycle Advantages
Reliability (compared with conventional plants). Higher availability.
Flexibility
Reduced Maintenance
Reduced Environmental Impact.
Reduced Costs
• Less capital equipment than conventional steam power plants
• Significantly reduced construction time
Combined Cycle Power Plant
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Reduced Maintenance
Reduced Environmental Impact
• Low NOx burners used on modern gas turbines
• Further NOx reduction by use of Selective Catalytic Reduction
(SCR) with ammonia injection on HRSG
Combined Cycle Advantages
Combined Cycle Power Plant
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Part #2:
Gas Turbine Major Components
2
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1) Gas Turbine Overview.
2) Major Components
Air Intake system.• Inlet System• Pulse System • Anti Icing system
Air Compressor• Inlet Guide Vane (IGV)• Blowoff (bleed) Valves.• Surge Protection (Discussion)
3) Combustion Chamber
4) Turbine Section
Gas Turbine Topics to be discussed
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1) Gas Turbine Overview.
Gas Turbine
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GT Simple Cycle Power Plant
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Gas Turbine SC Schematic
GT Simple Cycle Power Plant
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Gas Turbine Line Schematic
GT Simple Cycle Power Plant
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Gas Turbine (Typical Industrial GT)
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Gas Turbine (Typical Industrial GT)
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األجــزاء الــرئیسیـــة
Gas Turbine (Typical Industrial GT)
Illustrative Section of a GT
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Gas Turbine (Typical Industrial GT)
Schematic for Major Components
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2) Major Components
Air Intake System
Gas Turbine
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Air intake System
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Air system provide the required air for:
Combustion.
Reduce the temperature of combustion products to certain limit (accepted temp.)
Turbine rotor cooling
Seal lubrication system
Operate the control system
Air intake System
What is the function of air intake system?
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• Air filtration helps prevent internal component deterioration
• Air modification helps increase turbine performance
Air intake System
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Inlet screen: prevents entry of birds, papers,…
Pre-filter: removes medium size particles
High efficiency filter: removes fine particles
Filters are being cleaned by a reverse flow of air through the filters
Air intake System
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Pulse System
Air Puls للتنظیف
الھواء المراد فلترتة
فلتر ھواء
فلتر ھواء
ھواء نظیف
ھواء من ظاغط منفصل
یعمل النظام بشكل اوتوماتیكي على االقل مرة واحدة في الیوم
Air intake System
OperationNormal Self Cleaning is Active
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Evaporative cooler can be installed in the inlet duct to cool the temperature of the incoming air to improve the gas turbine performance.
Through the use of treated water, the incoming air is exposed to a water baffle which cools the air. This makes the air more dense, improving the turbine output power.
Air intake System
Water Injection (Inlet Ducting)
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(Anti Icing system مــانـع تشكـل الجلیـد )
یستخدم لحمایة الفالتر)Filters and Intake Duct ( اثناء التشغیل تحت.ظروف جویة ذات درجات حرترة منخفظة لمنع تشكل الجلید
یتكون نظام مانع تشكل الجلید من:
الساخن انبوب تزوید الھواء)Supply pipe(
رئیسيصمام امان )Shut off Valve (
تحكمصمام )Control Valve (
Air intake System
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مبدا عمل ھذا النظام:
و ذلك في ھذا النظام على التحكم في درجة حراره الھواء الداخلیعملحال تدني درجة حرارة الھواء الداخل یتم إضافة ھواء ساخن
یجلب الھواء الساخن من مخرج الضاغط للوحدة الغازیھ ,الیھلمدخل الھواء من الجانب العلوي للفالتر و من خالل مرشات ھواء
. ساخن یتم خلط الھواء الساخن مع الھواء الداخل
ال یتم التحكم بكمیة الھواءالساخن الداخل من خاللControl valve
Anti Icing system
Air intake System
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م5+م الى 5 -یعمل ھذا النظام مابین
Air intake System
Anti Icing system
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2) Major Components
Compressor Section
Gas Turbine
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Air Compressor
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The role of the air compressor in a gas turbine is basically to provideand compress enough air for
Combustion chamber,
Cooling purposes,
Sealing.
Air CompressorThe Role
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Impeller Diffuser Manifold
Centrifugal CompressorsAxial Compressors
Rotor Blades
Stator Vanes
Air CompressorType of Air Compressors
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• Centrifugal compressor consists of an impeller, a diffuser and a manifold
• Compressor receives air at the center of the impeller in an axial direction
• Air is accelerated outward by centrifugal reaction to its rotational speed
• Air is then allowed to expand into divergent duct, called a diffuser
• According to Bernoulli’s Principle, as the air spreads, its speed slows and static pressure builds
• The manifold distributes the air in a turbulence free condition to the combustion section
Advantages: High pressure rise per stage,Good Efficiency, Simplicity of manufacture,Low cost, Low weight, Low starting powerrequirements
Disadvantages: Large frontal area for agiven flow, More than two stages is notpractical because of energy lossesbetween stages
Air CompressorCentrifugal Compressors (Principles of Operation)
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• Airflow and compression occur parallel to the rotational axis of compressor
• Axial Compressor consists of a series of rotor blades and stator vanes
• A rotor and the following stator make up a stage
• Several stages are combined to make up the complete compressor
• Each rotor consists of a set of blades fitted into a disk
• Kinetic energy of the rotor is transferred to the air
• Stator vanes are placed to the rear of the rotor blades
• Stator vanes receive the air at high velocity and act as a diffuser, changing kinetic to
potential energy (Pressure)
• Stator vanes have a secondary function of directing airflow to the next stage of
compressor at the desired angle
Air CompressorAxial Compressor (Principles of Operation)
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Pressure and Velocity Variation in Axial Compressors
• Velocity increase through rotor blades isequal to velocity decrease through stator vanes
• Pressure, however, increases continuouslythrough rotor blades and stator vanes
• Rotating blades transfer the kineticenergy of the rotor to the airflow.
• Stationary vanes convert the airflowkinetic energy to pressure
Air Compressor
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Pressure and Velocity Variation in Axial Compressors
Air Compressor
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Air Compressor
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The compressor rotor is assembled by vertically stacking the wheels.
First, the forward stub shaft and first wheel are put with tie bolts in place.
Then, each wheel is placed vertically over the tie bolts.
Air Compressor
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و تنظم كمیة الھواء الالزمة للحتراق وبالتاليتتحكم التحكم بدرجة حرارة االحتراق
1 Pivot pin
2 Airfoil
6 Stationary blade carrier
7 Outer ring
8 Inner ring
Air CompressorVariable inlet guide vanes (IGV)
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Surge phenomenon
&
Surge Protection
Air Compressor
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Surge
Topics to be discussed:
What is the surge?
What is the effect of surge?
Surge control system.
Air Compressor
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What is the surge? Surge is the phenomenon of momentary,
periodic fluctuations in the discharge pressureof compressor air.
It occurs during acceleration, at a point whenthe compressor begins to discharge air fasterthan it can suck air in.
This condition causes low-pressure pockets to form inside the compressor.
Since higher pressures tend to flow toward lower pressures, the discharge air will flow back into the compressor to fill the low-pressure pockets.
Air Compressor
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What is the effect of surge?
As discharge air flows backinto the compressor, it gainsmore heat during the secondpressurization. If thisrepeated, air temperaturewould rise to destructivelevels.
Surge will cause sever axialmovement of the rotor in bothdirections (i.e. axial vibration).This condition will cause rapidfailure in the thrust bearingand all internal seals
Air Compressor
As the discharge air flows backinto the compressor, air is bledfrom an inter-stage location tothe exhaust collector, thuspreventing the back-flowing airfrom re-pressurizing.
Supply compressor suction withextra air so that compressor-inlet pressure keeps pace withcompressor-discharge pressure.This is done by routing a smallamount of compressor-discharge air back to thecompressor inlet.
Surge control
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التحكـــم فـي النظــام..
التشغیل بواسطة الغاز أو الدیزل:%.76الصمامات تفتح خالل بدایة التشغیل و تغلق عند وصول السرعة ل جمیع
اثناء التشغیل المستمر في: .تبقى جمیع الصمامات ھذا النظام مغلقة تماما
السرعةنزول:ق اغالعند (حال ایقاف التوربین عند نزول السرعة عن السرعة المسموحة في تفتح الصمامات
).صمام الوقود
اإلطفاء:Blowoff “خالل اإلطفاء المبرمج تفتح جمیع صمامات .تماما عند إغالق صمامات الوقود “
Trip )االطفاء المفاجىء(ن لسبب ما فإن الصمامات تفتح مباشرة ألن السرعة حتمیا سوف تنزل ع“ Trip “في حال حدوث
. السرع المسموحة
Blowoff (Bleed Valves)
Air Compressor
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..التحكــم فـي النظــام
“Compressor Wash”:الضاغطة اثناء تنظیف -إذا كان Manually “” خالل التنظیف من الممكن فتح الصمامات بشكل یدوي
.تنظیفو في حال الفتح یجب إغالقھم بعد االنتھاء من عملیة ال, ھنالك حاجھ لذلك
:الحمایة -Blowoff “یفشل التشغیل في حال لم یفتح أحد صمامات - “..یحدث للتوربین“ Trip” في حال فتح أحد الصمامات خالل انتاج الطاقة فإن -
Air CompressorBlowoff (Bleed Valves)
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Blowoff (Bleed Valves)
Air Compressor
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Air CompressorBlowoff (Bleed Valves)
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2) Major Components
Combustion Chamber
Gas Turbine
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Principles of Operation The combustion chamber basically consists of an outer casing, an inner perforated liner, a fuel injection system, and a starting ignition system.
The function is to add heat energy to the flowing gases, thereby expanding and accelerating the gases into the turbine section
When the fuel heat is added, the volume of the gas is increased and, with flow area remaining the same, this causes an acceleration of gases to occur.
Interaction of oxygen molecules and molecules of fuel which are heated to ignition temperatures results in combustion
Proper mixing of air and fuel leads to an efficient functioning of combustion chamber
The combustion chamber must cool hot combustion products to a temperature which the turbine section components can withstand
Combustion Chamber
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Flame Tube is
placed inside the air casing.
consists of
a fuel spray
a combustion zone.
a spark plug if necessary
Combustion Chamber
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Combustion Chamber
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Flame detectors indicate the control system whether or not flame exists in the cans they are mounted on.
Combustion Chamber
Spark Plugs are used to initiate combustion.
In some standard combustors, spark plugs are retractable. They are pushed outward to remove the plug from the flame zone. This ensures a longer life for the spark plug.All rights reserved / Omar Zaareer 2015
This older type combustor consists of multiple outer housing, each with its own perforated inner liner. Each of the multiple combustors (cans) is in effect a separate burner unit.
Multi-Can Combustor Can-Annular Combustor Annular Combustor
Combustion Chamber
This is more common in aircraft engines and consists of an outer case containing multiple liners located radially about the axis of the engine. The liners take air in at the front and discharge it at the rear.
This combustor consists of an outer housing, containing only one liner. Multiple fuel spray nozzles protrude into the liner.
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C Bearing
Compressor
TurbineCombustion Chamber
T Bearing
2*8 Hybrid Burners
Combustion Chamber
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COMBUSTION CHAMBERS FEATURES
Combustion Chamber
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HYBRID BURNER
HYBRID BURNER
Combustion Chamber
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HYBRID BURNER
HYBRID BURNER
Combustion Chamber
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HYBRID BURNER
Combustion Chamber
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HYBRID BURNER
Combustion Chamber
میزات االحتراق باستخدام premix burner
االنبعاثات )Nox and CO ( اقل بكثیر من حالة
Diffusion
التوزیع الحراري اكثر.انتظاما
التعرض الى االجھاداتالحراریة اقل بكثیر من
.Diffusion حالة
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2) Major Components
Turbine Section
Gas Turbine
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The role of the turbine section is to transform a major portion of the kinetic energy and heat energy in the exhaust gases into mechanical work, thereby enabling the turbine to drive the compressor and accessories.
The turbine section is bolted to the combustion chamber and contains the turbine wheels and turbine stators.
Recall that the compressor adds energy to air by increasing its pressure. The turbine extracts energy by reducing pressure of the flowing gases
Turbine The Role
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Pressure of hot gases leaving the combustion chamber is converted to velocity at the nozzles formed at the trailing edge of the turbine stators vanes and rotor blades.
The turbine stator vanes act as nozzles, increasing velocity and decreasing pressure.
The turbine nozzle assembly is also known as the turbine nozzle, nozzle diaphragm, or the turbine nozzle guide vane assembly.
The turbine stator vanes also direct the gases at the optimum angle into the turbine rotor blades.
The velocity referred to is vectored in a tangential direction rather than axial. This slows the gas flow axially, reducing its reactive power, but adds shaft power to the rotor system.
Turbine Gas Flow Through Stator and Rotor
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The turbine wheels are assembled by vertically stacking them. This eliminates sagging. The tie bolts are weighed, numbered and distributed to eliminate imbalance.
The turbine wheels and spacers are slid over the tie bolts and alignments are achieved by rabbet fits between the pieces.
The forward stub shaft is then placed over the tie bolts.
Turbine
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The first stage buckets are installed initially by inserting the first bucket into the dovetail slot made in the wheel.
The remainder of the buckets are installed in this fashion around the wheel.
The second and third stage buckets are installed as a 360 degree ring. The ring is placed into the wheel gradually.
Turbine
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Turbine
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Cooling techniques are employed to maintain the skin of the blades at acceptable temperatures.
Air is the main coolant fluid which can be extracted from the compressor, ducted to the turbine blade and used as a coolant.
Turbine
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Part #3:
Simple Cycle Improvement
3All rights reserved / Omar Zaareer 2015
Improvements to the Simple Cycle
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Regeneration
netoutputwork
9
Regenerator
Inlet
Compressor Turbine Power Turbine
34
4.5
5
5.5
21
3.5
Combustor
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Intercooling
netoutputwork
9
Inlet
Compressor 1 Turbine Power Turbine
4
4.5
521
Combustor
3
Intercooler
Compressor 2
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Reheating
netoutputwork
9
Inlet
Turbine Power Turbine
4
521
Combustor
3
Compressor
Reheater
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Single Shaft
netoutputwork
9
Inlet
Turbine
4
521
Combustor
3
Compressor
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Double Shaft
netoutputwork
9
Inlet
Turbine Power Turbine
4
521
Combustor
3
Compressor
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Double Shaft (Output at Compressor End)
netoutputwork
9
Inlet
Turbine Power Turbine
4
521
Combustor
3
Compressor
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Triple Shaft
netoutputwork
9
Inlet
Turbine 2 Power Turbine
4
521
Combustor
3
Compressor 2 Turbine 1Compressor 1
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نقــاش مفتـوح واسئلـــة
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Part #5:
Gas Turbine Maintenance
5
Omar Zaareer 20153/2/2015
• Recommended Running Hours between Inspections
• Factors that effect Maintenance Cycles
Gas Turbine Maintenance
Omar Zaareer 20153/2/2015
Agenda
• GT Maintenance Considerations
• Typical Inspection Scopes
• Factors That Affect the Maintenance Cycle
• Conclusion
• Questions
Omar Zaareer 20153/2/2015
GT Maintenance Considerations
• All GTs require regular maintenance.
• A typical maintenance regime is given below: -
• Combustion inspection every 8,000 – 12,000 hrs or 800 starts
• Hot gas path inspection every 24,000 hrs or 1200 starts
• Major Inspection every 48,000 hrs or 2400 starts
• Inspections may have other titles such as A,B or C inspections, or Level 1,2 or 3 inspections.
• The intention is the same.
Omar Zaareer 20153/2/2015
GT Maintenance ConsiderationsMajor Inspection
H.G.P.Inspection
CombustionInspection
Omar Zaareer 20153/2/2015
Inspection Scopes
• The combustion inspection
– The most frequent inspection, looks at: -
– Fuel nozzles, combustion liners, transition pieces
• Hot Gas Path Inspection
– Includes a combustion inspection and the following: -
– Turbine stage rotating and stationary parts
• Major Inspection
– Includes all of the above inspections plus a compressor and bearing inspection.
Omar Zaareer 20153/2/2015
Factors That Affect the Maintenance Cycle
• The period between inspections will shorten if: -
• The fuel used is not natural gas• Gas oil will reduce the cycle time by a factor of 1.5
• Heavy fuel oil may do so by a factor of up to 4
• Each peak load operational hr may count as 20 normal hrs.
• The unit is not in base load operation• The number of starts may call for inspection before the hours
limitation is reached.
• An emergency start may count as 2 normal starts.
• Trip from full load may count as 8 normal starts
Omar Zaareer 20153/2/2015
Factors That Affect the Maintenance CycleOperational Duty
• Cyclic operation – peak lopping
• Thermo-mechanical fatigue, TMF, because of simultaneous fluctuations in load and temperature.
• In phase TMF is when max strain and temperature coincide.
• High cycle fatigue – subjected repeatedly to unsteady load and temperature conditions.
• Rubs and wear.
Omar Zaareer 20153/2/2015
Factors That Affect the Maintenance Cycle
Firing Temperature.
– Notionally, one hour of peak firing will have the same effect as six hours at base load firing temperature.
– Peak firing temperature is usually a turbine inlet temperature increase of around 50oc.
– The degradation mechanisms are dependant upon the number of peak hours run and the frequency of peak firing selection.
Omar Zaareer 20153/2/2015
Conclusion
• Gas turbine fatigue and wear mechanisms are highly dependant on: -– Operational duty
– Fuel selection
– The environment.
• The OEM’s guidelines are just that - guidelines!
• Careful review of the condition of each individual GT is required and a programme made based on the behaviour of that individual unit.
Omar Zaareer 20153/2/2015
Gas TurbineOperating Procedures
ATCMKV-1
SPEEDTRONIC Mark V Annunciator Troubleshooting Chart
<I> CRT Display Alarm Message, Logic & No. Cause ActionÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30HRX3ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
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ÁÁÁÁÁÁÁÁL30AC_ALM ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁL30AF_ALM ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63CTSL_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
(Not Used)ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63ADLA ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
A.A. Diff. Press Low,Auto Xfer to Dist
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Problem with atomizingair system.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Investigate atomizing airsystem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63ADL_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Atomizing Air Diff. Pressure Low
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Atomizing air compressornot providing adequatepressure.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check atomizing air system.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L26AAH_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Atomizing Air Temp.High
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Failure of atomizingprecooler louvers to openand close.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check water supply to theatomizing air precooler,isolating valve position flowrestrictions.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L86S ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Auto Synchronizing Lockout
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Auto synchronizingself-checking system hasdetected a synchronizingequipment abnormality.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Investigate synchronizationsystem to determine exactcause of problem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L83COMF ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Auto Xfer to Dist. Communicator Failure
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Communication link withauto transfer to distillatesystem failed.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check auto transfer todistillate components andcommunication system.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L52HQ_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Auxiliary Hydraulic OilPump Motor Running
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Accessory gear-drivenhydraulic pump has notsupplied sufficientpressure because of leaksor failure of pump.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check hydraulic system.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L52QA_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Auxiliary Lube Oil PumpMotor Running
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
The main accessory geardriven lube oil pump issupplying insufficient lubeoil pressure due to pumpfailure or leaks
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Examine main lube pump.Check pump output and mainlube filters for leaks orplugging.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L49X_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Auxiliary Motor OverloadÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
One of the auxiliarymotors is overloaded.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check auxiliary motors todetermine which motor isoverloaded and the cause ofthe overloading.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L52QS_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Auxiliary Seal Oil PumpRunning
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Insufficient pressure frommain seal oil supplypump.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check seal oil supply systemcomponents.
Operating ProceduresGas Turbine
ATCMKV-2
<I> CRT Display Alarm Message, Logic & No. ActionCauseÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Battery 125 VDC GroundÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Insulation failure hasresulted in a ground on the125 VDC system.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Isolate and remove groundfrom the system.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L27BLN_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Battery Charger ACUndervoltage
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Battery charger ACundervoltage.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check battery charger ACbreaker. Check voltagemagnitude.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Battery DC UndervoltageÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Battery system voltage islow. Battery charger is notfunctioning properly,excessive drain on thebatteries, or bad cells inbattery.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check battery charger forproper operation, correctexcessive drain on battery,check for bad cells. The gasturbine should not be operatedunless DC power is availableto the emergency DC lube oilpump.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30LOAÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Bearing DrainTemperature High
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
High bearing draintemperature.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check lube oil feed and drainpiping.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Bearing MetalTemperature High
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Bearing or lube oilproblem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check bearings and lube oilsystem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L27VVN_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Black Start InverterTrouble
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
The black start inverteroutput voltage has gonelow, ignition power hasbeen transferred to theMCC 12 VAC.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Troubleshoot black startinverter.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L27BN_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Bus Undervoltage – No Auto Synch
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Bus synchronizingpotential not available.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check bus PT fuses andwiring. Do not use autosynchronizing or manualsynchronizing until problemis resolved.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L28FD_SD ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Chamber Flamed OutDuring Shutdown
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Flame loss during firedshutdown period.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Investigate cause and remedybefore restarting turbine.Monitor vibration on the wayup.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30SPA ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Combustion Trouble ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Faulty thermocouples, gaspath hardware or unevendistribution of fuel to thefuel nozzles.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Analyze data for trends. Atearliest shutdown checkthermocouples. Performborescope or combustioninspection. Check flowdivider fuel pressures. Checkfor plugged nozzles.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
LCOM_B_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Common IOCommunication Loss
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
<C> processor is nolonger communicating.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check <C> power supplycard and cabling.
Gas TurbineOperating Procedures
ATCMKV-3
<I> CRT Display Alarm Message, Logic & No. ActionCauseÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L86CB1ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Compressor Bleed ValvePosition Trouble
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Compressor bleed valveshave not operatedproperly. They are in thewrong position or requiredan excessive amount oftime to move from oneposition to the other.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Investigate problem. Theproblem should be correctedbefore restarting. The MasterReset switch must be pressedbefore restarting.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L86TCIÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Compressor InletThermocouples Disagree
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Bad thermocouple signal.Thermocouples in theinlet have failed, shortedor open.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check thermocouples andwiring and replace faultythermocouple(s).
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L26CTH_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Control Panel Temp HighÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Air conditions notmaintaining propertemperature.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check air conditioners.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L12HFÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Control Speed Signal Loss - HP
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Machine tripped due toloss of speed signal.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check wiring to speedpickups.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L12HFD_CÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Control Speed SignalTrouble - HP
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
HP speed pickup votingmismatch in <C>.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check and recalibrate HPspeed pickups.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L12HFD_P ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Control Speed SignalTrouble - HP
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
HP speed pickup votingmismatch in <P>.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check and recalibrate HPspeed pickups.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L12LF ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Control Speed SignalTrouble - LP
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
LP speed pickup votingmismatch.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check and recalibrate LPspeed pickups.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30CD ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Cooldown Trouble ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Unit failed to go oncooldown, or thecooldown cycle wasaborted prior to cooldowntimer timeout.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check ratchet system.Monitor vibration whencooldown cycle is reinitiated.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L52FC_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Cooling Fan MotorBreaker Open
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Cooling fan motor did notstart.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check cooling fan motormodule in PECC.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L71WL_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Cooling Water Level LowÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Cooling water tank levellow.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check cooling water systemfor leaks.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63QQ3H_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Coupling Oil Filter DiffPressure High
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Clogged filter. ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Replace filter.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L3CP_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Customer Start InhibitÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Customer contact inputnot enabled.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check customer’s permissive.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L4CT_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Customer TripÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Customer trips input to theL4CT logic have causedan automatic trip of theunit.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Determine which of thecustomer trip devices causedthe trip and correct.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Customer-Specific Alarms <C>
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Operating ProceduresGas Turbine
ATCMKV-4
<I> CRT Display Alarm Message, Logic & No. ActionCauseÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Customer-Specific Alarms <Q>
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L27QEL_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
DC Motor Undervoltage(Lube Oil)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
DC power not supplied toemergency DC lubepump.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check power to DC lubepump (MCC breaker on). Thegas turbine should not beoperated unless DC power isavailable to the emergencyDC lube pump.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30DIAG_C ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Diagnostic Alarm <C> ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
The microprocessor self-checking program hasuncovered a control panelproblem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Call up diagnostic display.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30DIAG_Q ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Diagnostic Alarm <Q>ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
The microprocessorself-checking program hasuncovered a control panelproblem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Call up diagnostic display.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L26DWH_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Diesel Engine CoolingWater Temp High
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Diesel cooling watertemperature is high.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check diesel cooling watersystem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L2DWZ2 ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Diesel Failure to BreakTurbine Away
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Diesel was unable toaccelerate to maximumrpm.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check diesel. Check dieselmaximum torque solenoid.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L48DSX ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Diesel Failure to Start ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Diesel has failure to start.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check diesel fuel tank.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L4DEY_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Diesel Failure to StopÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Diesel should stopautomatically after a 5minute cooldown period.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check diesel stop solenoid20DV.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63QDN_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Diesel Lube Oil Pressure Low
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Diesel lube oil pressure islow.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check diesel lube oil system.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L83DT1ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Diesel Test Mode Selected
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Indication that diesel testpushbutton permissive hasbeen activated.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Test mode should bedeselected once the test iscomplete.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63LF2H_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Distillate Fuel FilterDifferential Pressure High
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Clogged filter.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Replace filter.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L26FD1H_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Distillate FuelTemperature High
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Possible cooling systemproblem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check temperature sensor andcooling system.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L12HÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Electrical Overspeed Trip - HP
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
The speed control systemhas not limited HP turbinespeed within the triplimits.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Isolate problem and correct.
Gas TurbineOperating Procedures
ATCMKV-5
<I> CRT Display Alarm Message, Logic & No. ActionCauseÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L12LÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Electrical Overspeed Trip - LP
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
The speed control systemhas not limited LP turbinespeed within the triplimits.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Isolate problem and correct.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L72QEZ_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Emergency Lube OilPump Motor Running
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Loss of AC power to mainlube oil pumps.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Determine cause of AC powerloss.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L72ES_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Emergency Seal Oil Pump Running
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Generator seal oil pressureis low.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check main and auxiliary sealoil supply systemcomponents.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L59E_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Exciter OvervoltageÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Excessive field volts havebeen detected.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check exciter.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L94EKÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Exciter Rect CoolingTrouble - Trip 52G
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Breaker has tripped andmachine is at FSNLbecause of problem withexciter rectifier cooling.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Investigate exciter rectifiercooling system.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L26SFH_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Exciter Rectifier BridgeTemp High
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Possible cooling systemproblem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check exciter rectifier coolingsystem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L86TXT_CÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Exhaust OvertemperatureTrip <C>
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Turbine has tripped due tohigh median exhausttemperature.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Investigate.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L86TXTÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Exhaust OvertemperatureTrip
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
The temperature controlsystem has not limitedexhaust temperaturewithin the trip limits.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Isolate problem and correct.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63TK_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Exhaust Frame CoolingAir Pressure Low
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Exhaust frame blowermotor not operating. Airpassages blocked.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check motor operation.Inspect cooling air flowpassages.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L90TKLÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Exhaust Frame CoolingSystem Trouble - Unload
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Exhaust frame coolingfans 88TK-1,2 problem orsystem problem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Investigate exhaust framecooling system.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63EAH_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Exhaust Pressure HighAlarm
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Exhaust pressure has risenabove recommendedlevels.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Inspect exhaust filter andducting for blockage.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63ETHÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Exhaust Pressure HighTrip
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Exhaust pressure has risenabove the trip level.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Inspect exhaust filter andducting for blockage.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63ETHX_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Exhaust Pressure SwitchTrouble
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Bad signal from exhaustpressure switch.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check switches and switchwiring.
Operating ProceduresGas Turbine
ATCMKV-6
<I> CRT Display Alarm Message, Logic & No. ActionCauseÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30TXAÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Exhaust TemperatureHigh
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
The exhaust gastemperature is excessive.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check all thermocouples.Replace any badthermocouples. If problem isnot thermocouples, isolateportion of Control Systemcausing the problem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30TXA_C ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Exhaust TemperatureHigh <C>
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
High median exhausttemperature calculated in<C>.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Lower load to reduce exhausttemperature. Investigate.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30SPTA ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Exhaust ThermocoupleTrouble
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Faulty thermocouple. ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check thermocouples.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L86TFB ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Exhaust ThermocouplesOpen Trip
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Excessive number ofthermocouples notconnected.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check and reconnectthermocouples.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63FLZ_FLT ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Failure to Establish Liquid Fuel Press.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Liquid fuel forwardingsystem problem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check that power is beingsupplied to liquid fuelforwarding pump/motor.Troubleshoot per systemcomponents per instructions.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30FD_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Failure to IgniteÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Failure to fire within theone minute period.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check that ac power issupplied to the ignitionsystem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L62TT2_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Failure to StartÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
The master protectivelogic signal “L4” has notbeen set within 30 secondsof the start signal, hastripped the unit twice or, ifthe unit is operating inremote, flame was notestablished after two tries.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check all signals making upthe L4 logic signal todetermine which caused theproblem, or determine causeof lack of flameestablishment.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L3ZÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Failure to SynchronizeÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Unit did not synchronizeand close generatorbreaker within the normalexpected time (15seconds).
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check all signals goingmaking up the L4 logic signalto determine which caused theproblem or determine thecause of lack of flameestablishment.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L45FTX2_ALML45FTX1_ALM
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Fire in Zone #1 or Zone #2 Trip
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Fire in the turbine oraccessory compartment.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Restarting after an operationof the CO2 system requiresthat the CO2 system be reset,including all doors anddampers, and the CO2 releasemechanism.
Gas TurbineOperating Procedures
ATCMKV-7
<I> CRT Display Alarm Message, Logic & No. ActionCauseÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L45FAX_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Fire Protection SystemInoperative
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
CO2 pressure or controlproblem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check fire protection system.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L28FD_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Flame Detector TroubleÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
One of the detectorsoperating when no flameis present.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check for proper operation ofthe flame detection system.Check that the flame detectorquartz window are clean.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L60FSRGÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
FSR Gag Not at MaxLimit
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Manual FSR control hasnot been reset to aposition where it will notinterfere with automaticFSR control.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Raise the manual FSR controlto maximum.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L3GCVFLT ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Gas Control Valve ServoTrouble
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
The gas control valvefeedback signal isabnormal.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check LVDT.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63HGL_SENSR ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Gas Fuel HydraulicPressure Switch Trouble
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Bad signal from hydraulicpressure switch.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check switch and switchwiring.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63HGL_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Gas Fuel Hydraulic TripPressure Low
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Low oil pressure in gasfuel hydraulic oil tripcircuit.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check the control oil filterand control oil piping. Thisalarm will actuate if theturbine is tripped with themanual emergency trip valveon the turbine or a large leakwere to occur in the hydraulictrip circuit piping.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L3GFIVP ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Gas Fuel IntervalvePressure Trouble
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Pressure sensed betweenthe gas control valve andthe speed ratio valve isabnormal.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check GRV control system,intervalve vent, and pressuretransducer.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63PGFT ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Gas Fuel Nozzle PurgeSystem Pressure High
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Problem with valves. ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Determine cause of incorrectvalve positioning.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L94PGT ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Gas Fuel Nozzle PurgeSystem Trouble Trip
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Either VA13-1 or -2 or20VG-2 are stuck openand machine has tripped.Gas may be backingthrough the system.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check valves for cause.Correct positioning prior torefire.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L33PGFT ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Gas Fuel Nozzle PurgeValve Fail to Close
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
VA13-1 or -2 areobstructed.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check valves to removeobstruction to resume purge.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L33PGO_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Gas Fuel Nozzle PurgeValve Fail to Open
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
No atomizing air flow;VPR44-1 stuck.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check valve.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63FGL_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Gas Fuel Pressure Low ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Gas fuel pressure toturbine has been sensed aslow.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check cause of low supplypressure.
Operating ProceduresGas Turbine
ATCMKV-8
<I> CRT Display Alarm Message, Logic & No. ActionCauseÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L3GRVFLTÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Gas Ratio Valve PositionServo Trouble
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
The gas ratio valvefeedback signal isabnormal.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check LVDT.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63CA3L_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Gen Air Filter CleanerPressure Low
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Generator air inlet filtercleaning system problems.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check air inlet filter cleaningcomponents.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L43HPA_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Gen Purge System onManual Control
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Operator has selectedmanual control.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Change to automatic control.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L52GA_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Gen. Inlet Air DirtSeparator Not Running
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Generator inlet air dirtseparator malfunction.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check separator motor forproper operation. Checksupply system wiring.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63GFH_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Generator Air Filter HighPressure Drop
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
High pressure differentialacross generator air inletfilters.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Inspect and clean/changefilter elements, as required.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63BQL_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Generator BearingVacuum Low
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Generator bearings aresealed by vacuum. Thisalarm indicates a potentialproblem with the sealingsystem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Investigate generator bearingsealing system.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L52G_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Generator BreakerTripped
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Generator breaker hasbeen tripped by anautomatic protectivedevice or manually.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Determine device that trippedthe breaker.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63GKL_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Generator CasingHydrogen Press. Low
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Low hydrogen pressure ingenerator.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check hydrogen supplysystem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L71WGH_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Generator Casing LiquidLevel High
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Liquids have accumulatedin bottom of generator.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Remove liquids, check forleaks and take action toprevent recurrence ofproblem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L33GCC_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Generator CO2 DoorTrouble
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Generator CO2 door isclosed.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Door must be opened and thelatch reset.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L86TGT_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Generator DifferentialTrip
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
A generator panelprotective device hastripped the 86G lockoutrelay.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Determine which protectivedevice tripped the 86G andcorrect the abnormality thatprecipitated the trip.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L64F_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Generator Field GroundÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
A ground on the generatorfield has been detected.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Operation of the generatorwith the field grounded is notrecommended as a secondground could result inexcessive damage to thegenerator field.
Gas TurbineOperating Procedures
ATCMKV-9
<I> CRT Display Alarm Message, Logic & No. ActionCauseÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L94H_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Generator HydrogenPurge Shutdown
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Shutdown initiated due toone or more hydrogensystem problems, e.g.,hydrogen purity has fallento shutdown level.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check hydrogen cabinet forundervoltage. Checkhydrogen control switch inmaintenance/auto. Check andrestore hydrogen purity.Check seal unit. If puritycontinues to deteriorate, apossible hazard condition maydevelop.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L49GH_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Generator Stator TempHigh
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Generator statortemperature is excessivecaused by lack of coolingor overload.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
The generator should not beoperated when the statortemperature is excessive.Check cooling system, reduceoverload on generator.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L94GEN ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Generator VentilationTrouble Shutdown
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Temperature in generatorcompartment exceedslimits. Vent fansinoperable or insufficientto handle ventilationrequirements.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check generator ventilationsystem for proper fan/motoroperation. Check ventilationdampers for properoperation/position.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63FU2LAÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Heavy Fuel Pressure Low,Auto Xfer to Dist
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Problem with heavy fuelsystem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Investigate heavy fuel system.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L26FU2LAÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Heavy Fuel Temp Low,Auto Xfer to Dist
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Problem with heavy fuelsystem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Investigate heavy fuel system.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L3FUZÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Heavy Fuel TransferPermissive Trouble
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Turbine unable to transferto heavy fuel.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check heavy fuel system. Besure fuel is warm andfree-flowing.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30SPTÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
High Exhaust Temp.Spread Trip
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Faulty thermocouples, gaspath parts or unevendistribution of fuel to thefuel nozzles.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Analyze data for trends.Perform borescope orcombustion inspection. Checkflow divider, fuel pressures.Check for plugged nozzles.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L39VAÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
High Vibration AlarmÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
High vibration at one ormore bearings.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Monitor vibration readings.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L39VTX_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
High Vibration Trip orShutdown
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
High vibration due tobowed rotor, mechanicalimbalance, bearing failure,etc.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check that the hydraulicratchet is operating properly.Check for mechanicalfailures, observe vibrationlevel on the next startup.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30TNH_DIFF ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
HP Speed SignalDifferential Alarm
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
One of the HP speedsensors is showing adifferent speed than theother two.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check HP speed pickups.
Operating ProceduresGas Turbine
ATCMKV-10
<I> CRT Display Alarm Message, Logic & No. ActionCauseÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63HF1H_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Hydraulic FilterDifferential Pressure High
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Clogged filter.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Loss of fluid pressure anddeterioration of fluid puritymay result. Change filter.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L86HDÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Hydraulic ProtectiveTrouble
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
One second after thehydraulic oil trip isinitiated either the liquidfuel stop valve is notclosed or the hydraulictrip pressure (63HG,63HL) has not decreasedsufficiently.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check operation of 20FL and20HD servos.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63HQ1L_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Hydraulic Supply Pressure Low
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Hydraulic supply pressureis low.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check hydraulic supplypressure filter and differentialpressure gauge, regulatingvalve or pump.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L27GHN_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Hydrogen Control PanelUndervoltage
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Ac power supply voltagelow.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check power supply forproper operations. Checkwiring.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63GL_GH_AL ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Hydrogen Pressure Highor Low (Gen)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
High machine gaspressure or low manifoldgas pressure.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check generator hydrogensystem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63HHL_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Hydrogen Pressure Low(Skid)
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Hydrogen supply skidpressure low.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check skid components forproper operation.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30HPÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Hydrogen Purity TroubleÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Bad generator hydrogenpurity or purity pressure.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check generator hydrogensystem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
LWLX4MINÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Injection to Fuel RatioLow-Four MinuteAverage
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Steam (water) injectionflow four minute averagelow.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check steam (water) injectionsystem.
LWLXHR Injection to Fuel RatioLow-Hourly Average
Steam (water) injectionflow one hour averagelow.
Check steam (water) injectionsystem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L86GVAÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Inlet Guide Vane ControlTrouble Alarm
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
IGV control systemproblem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check IGV control system.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L4IGVT ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Inlet Guide Vane ControlTrouble Trip
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
IGV control systemproblem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check IGV control system.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L3IGVFLT ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Inlet Guide Vane PositionServo Trouble
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Incorrect servo operation.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check servos.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30TNI_DIFF ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
IP Speed SignalDif ferential Alarm
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
One of the IP speedsensors is showing adifferent speed than theothers.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check IP speed pickups.
Gas TurbineOperating Procedures
ATCMKV-1 1
<I> CRT Display Alarm Message, Logic & No. ActionCauseÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L71WG_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Liquid Detected inGenerator
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Excessive liquid in bottomof generator.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Remove liquid and takecorrective action to preventrecurrence of problem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L3LFLTÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Liquid Fuel Control FaultÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Liquid fuel checkingsystem has detected anabnormal servo or LVDTposition or signal.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Determine abnormalcondition by reading signals(L3LFLT1 to L3LFLT5).
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63LF1H_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Liquid Fuel FilterDif ferential Pressure High
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Clogged filter. ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Loss of fluid pressure anddeterioration of fluid puritymay result. Change filter.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30FQL_DIFF ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Liquid Fuel FlowDifferential Alarm
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Speed pickups on flowdivider disagree.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check and recalibrate speedpickups.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63HL_SENSRÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Liquid Fuel HydraulicPressure Switch Trouble
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Bad signal from hydraulicpressure switch.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check switch and switchwiring.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63HLL_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Liquid Fuel HydraulicTrip Pressure Low
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Low oil pressure in liquidfuel hydraulic oil tripcircuit.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check the control oil filterand control oil piping. Thisalarm will actuate if theturbine is tripped with themanual emergency trip valveon the turbine or a large leakwere to occur in the hydraulictrip circuit piping.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63FLZ_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Liquid Fuel Pressure LowÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Liquid fuel forwardingsystem problem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check fuel forwarding systemcomponents for properoperation. Check liquid fuelforwarding piping for leaks.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L3LFP_FLTÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Liquid Fuel Pump ControlTrouble
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Problem with one or morecontrol devices.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Troubleshoot liquid fuelpump control components todetermine problem andcorrect.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L33FL_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Liquid Fuel Stop ValveFailure to Open
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Valve or control failure. ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check operation of VSI andcontrols.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L26FL2LAÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Liquid Fuel Temp Low,Auto Xfer to Dist
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Heavy fuel temperature islow. Unit has beenautomatically transferredto distillate fuel operation.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check heavy fuel supplyheating equipment.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L3TFLT ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Loss of CompressorDischarge Pressure Bias
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Bad signal fromcompressor dischargepressure transmitter.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check transmitter andassociated connections forproper bias signal.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L3DWRF ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Loss of External SetpointLoad Signal
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Operating ProceduresGas Turbine
ATCMKV-12
<I> CRT Display Alarm Message, Logic & No. ActionCauseÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L28FDTÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Loss of Flame TripÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Failure of one of thedetectors to detect flame.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check for following: fuelbeing supplied to thecombustors, flame in allchambers, damaged crossfiretubes, or combustors. Checkfor proper control valveposition and fuel pressure.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63QTXÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Low Lube Oil PressureTrip
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Lube oil pressure hasfallen below the trip level.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Determine cause and correctbefore restarting unit.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30TNL_DIFF ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
LP Speed SignalDifferential Alarm
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
One of the LP speedsensors is showing adifferent speed than theother two.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check HP speed pickups.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L26QA_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Lube Oil Header TempHigh
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Lube header temperatureabove recommendedlimits.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check for proper operation ofthe lube oil heat exchangers,cooling water fans (properrotation) and temperatureregulating valve.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L26QT_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Lube Oil Header TempHigh Trip
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Lube header temperatureabove recommendedlimits.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check for proper operation ofthe lube oil heat exchangers,cooling water fans (properrotation) and temperatureregulating valve.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L71QH_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Lube Oil Level High ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Lube oil tank level high.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Investigate cause of high levelalarm and restore normallevel.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L71QL_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Lube Oil Level Low ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Lube oil tank level low.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check for leaks, restorenormal level.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63QA1L_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Lube Oil Pressure LowÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Lube system leaks orpump trouble.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Repair leaks or pump.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63QT_SENSR ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Lube Oil Pressure SwitchTrouble
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Bad signal from lube oilpressure switch.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check switches and switchwiring.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L26QN_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Lube Oil TankTemperature Low
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Lube tank temperaturebelow recommendedlimits (see pipingschematic).
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check for proper operation ofthe lube oil tank heaters.Starting is inhibited if the tanktemperature is low.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L26QT_SENSR ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Lube Oil TemperatureSwitch Trouble
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Bad signal from lube oiltemperature switch.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check switches and switchwiring.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63QQ1H_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Main LO Filter DiffPressure High
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Clogged filter.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Loss of fluid pressure anddeterioration of fluid puritymay result. Change filter.
Gas TurbineOperating Procedures
ATCMKV-13
<I> CRT Display Alarm Message, Logic & No. ActionCauseÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L43MAINTÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Maintenance - ForcingMode Enable
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Auto calibrate, memorychanging or logic forcingmode of operation hasbeen selected.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
When done with theoperation, deselect theoperation.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L86MAN_SYNC ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Manual SynchronizingLockout
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Manual synch lockout hasbeen selected on <I> CRT.Breaker will not close.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Determine why manual synchhas been locked out. Resetusing Master Resetpushbutton on <I> CRT.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L5E_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Manual Trip ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
The emergency stoppushbutton has beenpressed.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Correct abnormality thatcaused the operator to pushthe emergency stoppushbutton.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L86MP ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Master Protective StartupLockout
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Within the turbine controlpanel the threemicroprocessor controllersR, S and T are indisagreement for theproper condition of theMaster Protective logic“4X”.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Determine which controller isin disagreement with the othertwo.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L27MC1N_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
MCC Undervoltage ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Motor control centerundervoltage.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check that power is suppliedto the motor control center.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30LTA ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
No. 3 BearingTemperature High
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
High number 3 bearingtemperature.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check lube oil feed and drainpiping.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L33BS_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
No. 3 Drain ValvePosition Trouble
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Valve incorrectlypositioned.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check drain valve operations.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L3NZFLTÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Nozzle Control ServoTrouble
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Problem with secondstage nozzle servo.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check servo wiring andhydraulic oil system.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L43DIAG_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Off-Line DiagnosticsRunning
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Off-line diagnosticoperation has beenselected.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Do not start unit untildiagnostics are complete.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L3WCTIM_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
On Line Water WashInhibited
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Ambient temperature isbelow 50 deg F.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Wait to water wash untilambient temperature is higher.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L12HBLT_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Overspeed Bolt Trip - HPÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
The speed control systemhas not limited turbinespeed within the triplimits.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Isolate problem and correct.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L83HOSTÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Overspeed Test ModeSelected - HP
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
HP overspeed trip beingtested.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
See “Overspeed Trip Checks”section of text.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L83LOST ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Overspeed Test ModeSelected - LP
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
LP overspeed trip beingchecked.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
See “Overspeed Trip Checks”section of text.
Operating ProceduresGas Turbine
ATCMKV-14
<I> CRT Display Alarm Message, Logic & No. ActionCauseÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30EKÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Prim Exciter Rect CoolingFan Trouble
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Problem with primaryexciter rectifier coolingfan.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Determine and correctproblem with primary exciterrectifier cooling fan.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L4ETR_FLTÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Protective Module ETRRelay Trouble
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Trip due to masterprotective relay (4’s)circuit has a problem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Isolate <P> ProtectiveModule and correct theproblem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L12H_P_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Protective ModuleOverspeed Trip - HP
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
<P> module HPoverspeed trip.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Investigate cause ofoverspeed.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L12L_P_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Protective ModuleOverspeed Trip - LP
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
<P> module LP overspeedtrip.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Investigate cause ofoverspeed.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L12LF_OS ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Protective Speed SignalTrouble - LP
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
LP speed pickup votingmismatch in <P>.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check and recalibrate LPspeed pickups.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30HRX2 ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Ratchet Did Not Start ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Ratchet did not initiate aratchet stroke in theprescribed time.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check ratchet permissives.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L49HR1A_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Ratchet Motor OverloadÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Ratchet motor overload.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check ratchet motor overload(MCC). Check for properoperation of ratchetmechanism.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30HRX1 ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Ratchet Trouble ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Ratchet did not complete aprescribed motion innormal time.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check for proper operation ofratchet mechanism.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30RHFLTX ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Relative Humidity SensorFault
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Humidity sensor failure.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check sensor and wiring.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
R5E_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Remote Emergency TripÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Unit was tripped with theremote emergency trippushbutton.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Investigate and correct causeof trip. Manually resetpushbutton.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63SAL_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Seal Oil Diff. PressureLow
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Low seal oil pressureacross bearings.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check seal oil system.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63ST ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Seal Oil Diff. PressureLow Shutdown
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Seal oil pressure acrossbearings has reachedshutdown setpoint.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Correct seal oil systemproblem before restarting.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L71SDH_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Seal Oil Drain LiquidLevel High
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Seal oil drain systemproblem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check generator seal oil drainsystem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63STX_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Seal Oil Press. ShutdownSwitch Trouble
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Bad signal from seal oilpressure switch.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check switches and switchwiring.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30WC_LAGÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Standby Cooling WaterPump Running
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Either low cooling waterpressure, or a problemwith the main coolingwater pump.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Investigate problem withcooling water system or maincooling water pump.
Gas TurbineOperating Procedures
ATCMKV-15
<I> CRT Display Alarm Message, Logic & No. ActionCauseÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30FD_LAGÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Standby Dist Fuel FwdPump Running
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Low distillate fuelpressure or problem withmain dist fuel fwd pump.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Investigate fuel forwardingsystem and main pump.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L4DTÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Starting Device LockoutÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L3SMT ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Starting Device Trip ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
The turbine has beentripped because thestarting device has failedto start the turbine.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Note where in the startsequence the turbine trippedto aid in determining cause oftrip. Check the suspectsystem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Starting Motor BreakerDid Not Pick Up
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Cranking motor did notstart.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check limitamp forenergizing or overload.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L4CRTÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Starting Motor BreakerDid Not Pick Up
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Starting motor did notstart.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Checking starting motormodule in PECC.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L49CR_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Starting Motor Overload ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Starting motor is showingan overload.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Investigate starting motorcircuits.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L86CRTX ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Starting Motor ProtectiveLockout
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Cranking motor circuitelectrical fault.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Clear fault and reset 88CR.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L2SFT ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Startup Fuel FlowExcessive Trip
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Excessive fuel for startuphas been detected. For gasfuel the gas control valveis open too far.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check the servo and feedbacksignals for proper operation.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30EKR ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Stby Exciter Rect CoolingFan Running
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Problem with primaryexciter rectifier coolingfan.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Determine and correctproblem with primary exciterrectifier cooling fan.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L60APHA_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Steam Augmentation -High Pressure
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
High steam pressure. ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Reduce steam pressure.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L60APHT ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Steam Augmentation -High Pressure Trip
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Steam augmentationsystem tripped due to highpressure.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Correct problem beforerestarting steamaugmentation.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L60ATHT ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Steam Augmentation -High Temp. Trip
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Steam augmentationsystem tripped due to hightemperature.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Correct problem beforerestarting steamaugmentation.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L60ATHA_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Steam Augmentation -High Temperature
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
High steam temperature.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Reduce steam temperature.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L60APLA_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Steam Augmentation -Low Pressure
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Low steam pressure.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Increase steam pressure.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L60ALPT_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Steam Augmentation -Low Pressure Trip
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Steam augmentationsystem tripped due to lowpressure.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Correct problem beforerestarting steamaugmentation.
Operating ProceduresGas Turbine
ATCMKV-16
<I> CRT Display Alarm Message, Logic & No. ActionCauseÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L60ATLT_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Steam Augmentation -Low Temp. Trip
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Steam augmentationsystem tripped due to lowtemperature.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Correct problem beforerestarting steamaugmentation.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L60ATLA_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Steam Augmentation -Low Temperature
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Low steam temperature.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Increase steam temperature.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L60WL1_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Steam Flow HighÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Excessive steam flow.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check steam system.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L60WQPL_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Steam Flow High LockoutÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Excessive steam flow.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Correct problem beforerestarting.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30SJ ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Steam Injection NotSelected
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
NOx control steaminjection systeminoperative.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Select Steam Injection on <I>CRT.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L60SPHA_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Steam Pressure High ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
High steam pressure.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Reduce steam pressure.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L60SPHT_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Steam Pressure HighLockout
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
High steam pressure.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Correct steam pressure beforerestarting.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L60SPLA_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Steam Pressure Low ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Low steam pressure. ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Increase steam pressure.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L60SPLT_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Steam Pressure LowLockout
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Low steam pressure.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Correct steam pressure beforerestarting.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L60STHA_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Steam Temperature HighÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
High steam temperature.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Reduce steam temperature.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L60STHT_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Steam Temperature HighLockout
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
High steam temperature.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Correct steam temperaturebefore restarting.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L60STLA_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Steam Temperature LowÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Low steam temperature.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Increase steam temperature.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L60STLT_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Steam Temperature LowLockout
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Low steam temperature.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Correct steam temperaturebefore restarting.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
LWLXHR ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Steam to Fuel Ratio Low– Hourly Average
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Steam (water) injectionflow one hour averagelow.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check steam (water) injectionsystem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63QQ2H_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Trip Oil Filter DiffPressure High
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Clogged filter. ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Replace filter.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63TF1H_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Turbine Air InletDif ferential PressureAlarm
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Clogged filter. ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Replace filter.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63TFH_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Turbine Air InletDif ferential PressureShut-Down
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Clogged or iced filter. ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Determine cause of blockage.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L63TFH_SENSR ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Turbine Air InletDifferential PressureSwitch Trouble
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Bad signal fromdifferential pressureswitch.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check switch calibration andswitch wiring.
Gas TurbineOperating Procedures
ATCMKV-17
<I> CRT Display Alarm Message, Logic & No. ActionCauseÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30TFXÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Turbine Air Inlet TroubleÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Inlet filter excessivepressure drop or inletfilter motor overloaded orinlet compartment bypassdoor is not in properposition.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check the following:
Inlet filter for blockage.
Inlet filter motor for properoperation.
Inlet house bypass door.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L26BT1H_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Turbine CompartmentTemp High
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Compartment temperatureexcessive.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check cooling air fan forproper operation.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L83KU_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Turbine CompressorAbrasive CleaningSelected
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Compressor beingcleaned.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Turn function off whencleaning is complete.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L48 ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Turbine IncompleteSequence
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Failure of unit to reachcomplete sequence.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check equipment which iscausing the problem in thenormal sequence.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L3A ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Turbine Underspeed ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Turbine has bogged down.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Reduce the load that will beapplied to the generatorbefore reclosing the generatorbreaker.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L39VD3_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Vibration – Start Inhibit ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Vibration protectionsystem problem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check vibration protectionsystem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L39VDIFF ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Vibration DifferentialTrouble
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Vibration protectionsystem problem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check vibration protectionsystem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L39VD1 ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Vibration Sensor DisabledÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Signal from vibrationsensor is faulty.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check vibration sensors andwiring.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L39VFÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Vibration TransducerFault
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Vibration detectorimpedance is not withinnormal bounds.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check impedance of eachvibration detector.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L3WFD_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Water Flow FeedbackTrouble
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
A disagreement betweenthe water flow sensors hasbeen detected.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Determine failed sensor andreplace.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L86WN3ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Water Flow High LockoutÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Water injection systemlocked out due toexcessive water flow.This is dangerous becauseit could extinguish flame.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Investigate water injectionsystem.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L3WFLT_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Water Flow SensorTrouble
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Water flow sensorsdisagree.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Recalibrate or replace faultyflow sensor.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L86WN1 ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Water Inj Suction PressureHigh Lockout
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
High supply pressure. ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check water supply system.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L86WN2ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Water Injection DischargePressure Low Lockout
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Low supply pressure.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check water supply system.
Operating ProceduresGas Turbine
ATCMKV-18
<I> CRT Display Alarm Message, Logic & No. ActionCauseÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30WNÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Water Injection NotSelected
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
NOx control waterinjection systeminoperative.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Select Water Injection on <I>CRT.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L26JS2H_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Water Skid EnclosureTemperature High
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Failure of exhaust fan.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check exhaust fan/motorcomponents for properoperation.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L26ALL_ALMÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Water Skid EnclosureTemperature Low
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Failure of heaters.ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check heater and blower forproper operation.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L86WN4ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Water System TroubleLockout
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Water injection system notready for use.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check water injection systemcomponents.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L3WSFLT_ALM ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Water Valve LVDTTrouble
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Water valve LVDTsdisagree.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Recalibrate or replace faultyLVDT.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30TWW ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Water Wash InhibitWheelspace Temp High
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Turbine not sufficientlycooled before attemptingwater wash.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Allow turbine to cool tospecification prior toselection.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30WSA1 ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Wheelspace TempDif ferential High
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Excessive differentialbetween wheelspacethermocouples.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Check thermocouples forshorts, grounds or opens.Replace failures. If conditionpersists investigate for sealfailure.
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
L30WSA2ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Wheelspace TemperatureHigh
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
High wheelspace temperature.
Check thermocouples, investigate for seal failure.
Questions
Omar Zaareer 20153/2/2015
Part#6
Startup \ Shutdown تشغیل وإیقافالتوربینة الغازیة
6
Omar Zaareer 20153/2/2015
GT precondition for startup & check points: الشروط االولیة ما قبل عملیةالتشغیل
Ensure all permits to work related to GT clear and no any body in the gas turbine and there is no tools in it .( جمیع اذونات العمل على التوربینة مغلقة)
All electrical panels energized & available ) جمیع الكبائن الكھربائیة مشحونة وجاھزة(
Control cabinets energized and operation )جمیع كبائن التحكم في العمل
All fluids system available and normal level and temperature جمیع المنظومات مثل زیت.التزییت والتحكم وغیره جاھزة وضمن المعاییر الطبیعیة بالنسبة للحرارة والضغط .
Fire fighting system healthy & energized جمیع انظمة االطفاء والحریق جاھزة وفعالة
No alarms on alarm list.التأكد من عدم وجود اي تحذیرات على شاشات التحكم للتوربینة الغازیة
Check all doors of the unit in operation position .(filter of air inlet ……) التأكد من جمیعاالبواب للمعدات واالنظمة في الموقع مثل نظام مدخل الھواء وغیرھا
IGV in auto and remote mode. نظام توجیھ الھواء انھ على وضع اتوماتیك والتحكم بھ من من التاكد غرفة المراقبة
Omar Zaareer 20153/2/2015
GT precondition for startup & check points: الشروط االولیة ما قبل عملیةالتشغیل
Auto shut down or trip signal must to be acknowledged اي اشارة سابقة من اطفاء سابق او بسبب توقف مفاجىء یجب عمل لھا قبل عملیة التشغیل reset
SFC not failed .التاكد من نظام بادىء الحركة انھ جاھز
Excitation system not failed .التأكد من نظام التحریض انھ جاھز
Power grid available التاكد من جاھزیة الشبكة الستقبال الطاقة
Ready to start with green color اشارة ان التوریبنة جاھزة للتشغیل تكون باللون االخضر
Omar Zaareer 20153/2/2015
GT START Up تشغیل التوربینة الغازیة
المعدة المةلس وذلك إجراءات عدة اتخاذ یجب الغازیة التوربینة تشغیل بدیة عند الغازیة نةللتوربی المساعدة األنظمة جمیع تشغیل من التأكد یجب حیث والمشغل
في دالعمو تدویر ومنظومة المولد تبرید ومنظومة التزییت زیت منظومة مثل مثل عدةالمسا األنظمة تشغیل من التأكد یتم الغازیة التربینة تشغیل بدایة
تدویر ومةمنظ تشغیل من التأكد ثم المولد تبرید ومنظومة الزیت تبرید منظومة إیقافو تشغیل في التحكم نافذة بواسطة التوربینة تشغیل ثم ومن العمود
یتم إن ىإل بخطوة خطوة التشغیل خطوات تتبع یمكن حیث الغازیة التوربینة.الشبكة على المولد ربط
Omar Zaareer 20153/2/2015
لمنظومات السابقة على تشغیل جمیع ابالتأكید یقوم نظام التحكم تشغیل التوربینة وعند فات وإیقاف منظومة تسخین ملإلى الضاغط الھواء دخول من فتح بوابة التأكد ثم
:التالیةالمولد ثم تتم الخطوات
GT START Up تشغیل التوربینة الغازیة
ر غلق صمام تصریف الوقود الخاص بغرفة االحتراق ثم إیقاف منظومة تدوی10% بالضاغط بنسبة فتح الخاصة العمود وفتح ریش التوجیھ
الحركة للوحدةتشغیل نظام بدءSFC
عندھا یتم فتح صمام اإلیقاف االضطراري لمنظومة لفة بالدقیقة 350أكثر منإلى ربینة والتتصل سرعة عندما
ویتم تشغیل 23% بنسبة فتح Pilot line ثم یتم فتح صمام التحكم لخط حقن الوقودESV الوقود الغازي
.االحتراقنظام القدح للحراقات لیتم االشتعال في غرفة
Omar Zaareer 20153/2/2015
GT START Up تشغیل التوربینة الغازیة
سرعةعند RPM 500یتم إیقاف مضخة رفع العمود
SFC یتم إیقاف منظومة بدء تشغیل الوحدة عندھا RPM 2200 تصل السرعة إلىعندما
.التحریضوتشغیل نظام 2و 1یتم إغالق صمامات نزف الھواء المرحلة عندھا RPM 2900 تصل عندماالسرعة إلى
سرعةوعند RPM 2970 3إغالق صمام نزف الھواء المرحلة یتم
تشغیل نظام التوافق لربط المولد مع الشبكة وتحمیل المولد یتم RPM3000 سرعةوعند
% 100ریشفتح ریش التوجیھ تدریجیا إلى إن تصل نسبة فتح یتم درجة مئویة 526 وعندما تصل حرارة العادم أكثر منإلى
.لعادمعندھا یتم انتقال متحكم التوربینة من وضع التحكم بالحمل الى وضع المتحكم بحرارة ا
Omar Zaareer 20153/2/2015
Start-up (typical sequence with liquid fuel)
(A)
SEQL9ESTD 1
(B)
SEQL9ESTD 2
Start-up (typical sequence with liquid fuel)
SEQL9ESTD 3
Start-up (typical sequence with liquid fuel)
Shutdown (typical sequence with liquid fuel)
(A)
SEQL9ESTD 4
(B)
SEQL9ESTD 5
Shutdown (typical sequence with liquid fuel)
Gas Turbine Start-up Curve - Cold Start-up منحنى تشغیل التوربینة الغازیة من
Omar Zaareer 20153/2/2015
Gas Turbine Start-up Curve – WARM Start-up منحنى تشغیل التوربینة الغازیة من
Omar Zaareer 20153/2/2015
GT START UP
0
10
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30
40
50
60
70
80
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100
0 50 100 150 200 250 300 350 400 450 500
TIME [s]
GT
sp
ee
d [
Hz]
, N
G C
V [
%]
0
50
100
150
200
250
300
350
400
450
500
OT
C [
°C]
NG-STOP VALVE
NG CV
GT speed
OTC
SFC OFF
First gradient
Second gradient
NG stop valveSpeed
controller
active
Start up function active
GT START Up تشغیل التوربینة الغازیة
Omar Zaareer 20153/2/2015
GT START Up تشغیل التوربینة الغازیة
Omar Zaareer 20153/2/2015
Omar Zaareer 20153/2/2015
GT START Up تشغیل التوربینة الغازیة
Omar Zaareer 20153/2/2015
GT START Up تشغیل التوربینة الغازیة
Omar Zaareer 20153/2/2015
GT LOADING/UNLOADING GRADIENTS معدلبعد الدمج مع الشبكة MWالتحمیل
NORMAL: الطبیعي 11 MW/min
FAST: السریع 15 MW/min
SLOW: البطيء 4 MW/min (between base and peak load)
Omar Zaareer 20153/2/2015
Shutdownالتوربینة إیقاف إیقاف دعندالمول مفتاح فتح یتم إن إلى تدریجیا المولد أحمال تخفیض یتم
ماتصما جمیع غلق یتم ثم الشبكة من المولد وعزل و وغلق التوربینةdiffusionالوقود لخطي التحكم lineوpilot lineصمام وغلق ESV500 سرعة وعند الھواء نزف صمامات وفتح RPM مضخة تشغیل یتم تشغیل یتم180RPM من اقل الى السرعة تصل وعندما العمود رفع
Turning( العمود تدویر منظومة gear operation(دقیقة130 وبعد ومضخة المساعدة المضخة بتشغیل وذلك تلقائیا الزیت نظام فحص یعمل
.جاھزیتھما من التاكد بعد اطفائھما ثم الطوارىء
GT Shutdown اطفاء التوربینة الغازیة
Omar Zaareer 20153/2/2015
Gas Turbine Shutdown Curve – منحنى ایقاف التوربینة الغازیة
Omar Zaareer 20153/2/2015
GT Shutdown اطفاء التوربینة الغازیة
Omar Zaareer 20153/2/2015
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