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2012 WTUI Conference LM2500 Package SessionMarch 18-21, 2012Pasadena, CA
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Package Issues
• Please Participate!!!
• Don’t be shy
• Help each other
Pl d ’t di ifi $$$$• Please don’t discuss specific $$$$
• Ask your question. You may just get your answeranswer.
2012 WTUI PresentationLM2500 Breakout Session
STARTER CLUTCH ISSUES
W h h d th t th ll l t h h We have heard rumors that the roller cage clutch has failed on a couple of units. At around 8,200 hours and 700 starts it was recommended that we replace ours before it fails and possibly destroy the gearbox. We
l d it th d l t h i t d it replaced it, the removed clutch was inspected it was without any blemishes. So before I go and replace the clutch on a routine basis I'm inquiring as to what the other users are doing.
My Questions
Has any user experienced a failure of the starting y p gclutch?Has anyone replaced a clutch and seen damage to the clutch that would in their opinion if left alone cause a failurefailure.
2012 WTUI PresentationLM2500 Breakout Session
3
Attemperator Systems
W l i dd d h • We are planning to add a desuperheater system to our plant. Does anyone have experience or knowledge with a superheat bypass system? We are looking into the SH bypass as an alternative option to the final stage spray water system.
• Does anyone have an alternative option?
2012 WTUI PresentationLM2500 Breakout Session
4
LM2500 Six Pack PT Blade Twist
D U• Dear Users,From an inspection from the exhaust diffusor we found from 4 neighboring blades (S6B) interlocking tip shrouds disengagement The FSR just pushed them back and once disengagement. The FSR just pushed them back and once in the shop no dimensional deviations could be determined. However, not so confident and would like to know if anybody else has same or comparable experience know if anybody else has same or comparable experience and root cause. Thanks.
2012 WTUI PresentationLM2500 Breakout Session
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Combined Cycle Peaker Plants
D U• Dear Users,Is anyone operating there combined cycle units as a merchant market peaker?Wh t h d t i t t ti ?• What have you done to improve your startup times?
• Have you been able to reduce your steam turbine startup times?
• Are you participating in any ancillary markets?
2012 WTUI PresentationLM2500 Breakout Session
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Package IssuesFilter House• Pre filters• Primary filtersPrimary filters• Canister Filters• Instrumentation• Inlet Chiller coils• Inlet Heaters• SMEC system• Corrosion Issues• FOD Screens• Ventilation system issues• Fogging Systems
2012 WTUI PresentationLM2500 Breakout Session
Package Issues
CO2 Bottle and distribution systemy• Bottles• Hoses• Instrumentation Picture #1• Block Valve• Discharge Nozzles• Fire Control Panel
I ti / P it
Picture #12.5pt black border
• Inspections / Permits
2012 WTUI PresentationLM2500 Breakout Session
Package Issues
Halon Bottle and distribution systems• Bottles• Hoses• Instrumentation• Block Valve• Discharge Nozzles
Fi C t l P l• Fire Control Panel• Inspections / Permits
2012 WTUI PresentationLM2500 Breakout Session
Package Issues
Generator Enclosure Fan• Bearing failure• Fan flow switch failure • Belt failure• Motor failure• Expansion joint failure
2012 WTUI PresentationLM2500 Breakout Session
Package Issues
Turbine Enclosure Fan• Bearing Failure• Fan flow switch failure• Belt Failure• Motor Failure• Expansion Joint Failure• Fan installed gas sensors
2012 WTUI PresentationLM2500 Breakout Session
Package IssuesTurbine lube oil• Particulate problems• HTS oil (SL2500-10-03R1)HTS oil (SL2500 10 03R1)• Tank issues• Demisters• Filters• Hoses• Thermostatic valves• Cooler problems• VG problems
2012 WTUI PresentationLM2500 Breakout Session
Package IssuesGenerator Lube oil system• AC lube oil pump• Check Valves• Check Valves• Pressure control valve• Pressure relief valve • Oil analysis issues• Oil analysis issues• Demister• Run down tank
2012 WTUI PresentationLM2500 Breakout Session
Package IssuesGenerator• Bearing problems• Vibration problemsVibration problems• Proximiters• Exciter• Hi-Pot issues• Mechanical pump problems
2012 WTUI PresentationLM2500 Breakout Session
Package Issues
Fuel valve• Water getting inside valve• Valve failure• Strainers / Filter issues• Vent valve problems• Block valve problems• Flow meter
2012 WTUI PresentationLM2500 Breakout Session
Package Issues
Package Crane• Crane Problems• Fit up with A-Frame Fit up with A Frame • Load testing problems• Load Certifications• Interference Problems
2012 WTUI PresentationLM2500 Breakout Session
Package Issues
Service Bulletins 2011-2012
• 117 Individually Replaceable T54 Probes & Harnesses.• 158 Acoustic Baffle Seal Simplification (DLE and DLE Models).
225 I t f C Di h P S l / S l T th Ti Th l C ti• 225 Intro of a Comp Discharge Press Seal w/ Seal Teeth Tip Thermal Coating.• 228 Hi Pressure Compressor Stage 0 Shroud Bolted Joint Improvement.• 229 Turbine Mid-Frame Liner Improvement.• 230 T54 Harness Support.30 5 a ess Suppo t• 231 Electrical Harness Bracket Improvement.• 232 HPC CDP Seal – Thin Ribbon Honeycomb.
2012 WTUI PresentationLM2500 Breakout Session
Package Issues
INSTRUMENTATIONINSTRUMENTATION
First checks when engine is not performing to specificationsto specifications.
Instrumentation• Periodic calibration checks of critical instrumentation important.
Criticals performed Quarterly Non-Criticals at least annually
I ff d f d Is offered as part of vendor services.
2012 WTUI PresentationLM2500 Breakout Session
Package Issues
Electrical• MCC’s• Batteries• Chargers• Inverters
2012 WTUI PresentationLM2500 Breakout Session
Package Issues
Gas Turbine Controls• Mark 4,5,6• MGTB• Engine Cables / Trays• Wet Panel• MTTB A/C units
2012 WTUI PresentationLM2500 Breakout Session
Package Issues
Generator Controls• AVR Problems• Beckwith Relays• Satec• Power System Stabilizer• Abnormal operation (excess MVARH’s)• Relay Malfunctions (NERC Reportable)
2012 WTUI PresentationLM2500 Breakout Session
Package Issues
Enclosure problemsp• Generator package leaks• Turbine Package leaks• Package Parts availability• Enclosure separation wall• Roof skid leaks• Freezing Issues
D• Doors
2012 WTUI PresentationLM2500 Breakout Session
Package Issues
WATER WASHINGWater wash system• Pump problems• Filters• Nozzles• Instrumentation• Heaters
Important to perform regularly to optimize compressor performanceperformance.
First checks when engine is not performing to specifications.
2012 WTUI PresentationLM2500 Breakout Session
BOP Discussion• BOP related Items• DCS as related to the GT packageDCS as related to the GT package• Anyone Blackstart if so when did you do it? Lessons learned• Gas Compressor• SCR• Aux Electrical system• Water quality problems (Especially the peakers)
2012 WTUI PresentationLM2500 Breakout Session
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