ICOLIM2014

Budapest HUNGARY

Live Working Practices & Development ForEGAT Overhead Line in Thailand

By Kitti PETCHSANTHAD / kitti.p@egat.co.th

ICOLIM2014 Budapest HUNGARY

1. Introduction for EGAT Transmission System

2. EGAT Capability on Transmission System O&M

3. EGAT Live Working Practical Experiences

4. EGAT Lineman Training School

5. Live Working Training Activity

6. Live Working Development

7. Summary

Agenda

ICOLIM2014 Budapest HUNGARY

1. EGAT TransmissionSystem

EGAT TransmissionSystem

EGAT TransmissionSystem

Voltage Substation Transformer Transmission Line

(kV) No. % MVA % (Circuit-km) %

500 kV AC 11 5.17 20,849.99 23.79 4,167.166 12.82

230 kV AC 71 33.33 51,660.04 58.94 14,505.652 44.63

132 kV AC - - 133.40 0.15 8.705 0.03

115 kV AC 131 61.50 14,617.49 16.68 13,779.602 43.39

69 kV AC - - - - 19.00 0.06

300 kV DC - - 388.02 0.44 23.066 0.07

Total 213 100 87,648.94 100 32,503.191 100

EGAT TransmissionSystem(March2014)

1. PLANNING

2. ENGINEERING

3. CONSTRUCTION

8. KM & LE TRAINING

7. RESEARCH & DEVELOPMENT

6. ANALYSIS PROBLEM & SOLUTION

5. MAINTENANCE

4. OPERATION

EGAT TransmissionSystemWork

2. EGAT Capability on theTransmissionSystemO&M

EGAT Capability on TS-O& M

• TS – Operation Scenario / Condition

• TS –InspectionTechniques

• TS –MaintenanceMethod

• Live Line Working –T-Line

• Lineman Training School / Facilities

• High Voltage Laboratory

• Consultancy & Training Services

TL – INSPECTIONS TECHNIQUES

TL – INSPECTION TECHNIQUES

• Ground / Climbing Inspection

• Helicopter Inspection

• Helicopter Inspection with VDO Camera

• Helicopter Inspection with DAYCOR II Corona Camera

• Helicopter Inspection with Aerial Petrol System (APS) : Camera / VDO / Corona Camera / Thermo-vision Camera

TL – MAINTENANCE METHODS

• De-energized Work

• Tower Erection / Restoration

• Conductor Stringing Work

• Grounding Installation

• Live Line Working

• Live Line Washing

• Aerial Live Washing

EGAT TL - Live Line Working

• Insulator String Replacing

• Hardware Assemblies Replacing

• Spacer Damper / Damper Replacing

• Conductor / Ground Wire Repair

• Insulator Disc Checking / Replacing

• Insulator Washing

3. EGAT Live Working Practical Experiences

Insulating Tool Methods ( Hot Sticks Work )

EGAT-Experiences on Live Line Working

EGAT-Experiences on Live Line Working

Changing insulator string on 115 kV& 230 kV line•115 and 230 kVSingle Suspension Insulator String•115 and 230 kVDouble Suspension Insulator String•115 and 230 kVSingle Tension Insulator String•115 and 230 kVDouble Tension Insulator String

Insulating Tool Methods ( Hot Sticks Work )

Live Line Bare Hands

EGAT-Experiences on Live Line Working

Live Line Bare Hands

EGAT-Experiences on Live Line Working

Changing insulator string & line accessorieson 500 kVoverhead transmission line•500 kVSingle Suspension Insulator String•500 kVDouble Suspension Insulator String•500 kVSingle Tension Insulator String•500 kVDouble Tension Insulator String

High Risk Activity

Better Manage By

Safety Rules / Procedure & Best Training Course

EGAT-Experiences on Live Line Working

LW Concepts: High Risk Activity

Minimum Approach Distance & SoundAccess Method

Minimum Safety Clearance & Comfort Position

Safety Rules / Procedure & Best Training Course

Working Team Plus Safety Watcher

EGAT-Experiences on Live Line Working

Snatch Block 1

Snatch Block 2

Snatch Block 3

Bonding Wand

Shock AbsorbingLanyard

Fall Arrester

Live Line SafetyRope

Live Line Hand LineRope

Capstan Hoist

Lineman

Accessed to Energized Conductor

"X" = Height of

Guy Position

Maximum Total

Working Load

8' - 0" 300 Lbs.

12' - 0" 400 Lbs.

16' - 0" 500 Lbs.

Ladder SupportAssembly for Vertical

Tower Member

LOAD

Ladder ClampLadder Clamp

Ladder Side - Rails

Swivel SticksSwivel Sticks

Spreader BarSpreader Bar

Live Line Rope

Live Line

Rope Blocks

Tower Member

Ladder RungSwivel Hook Ladder

Live LineSafety Rope

" X

"

20' - 0" Max.

"A" "B"

Notes : Load may be anywhere between point "A" & point "B"

See Note

Work Site & Condition

EGAT-Experiences on Live Line Working

Approach Distance & Access Method

Lineman Position

MAD : Safety Clearances

EGAT-Experiences on Live Line Working

Minimum Approach Distance (MAD)

EGAT-Experiences on Live Line Working

A. Use and Care of Live Line Tools and Ropes B. Use and Care of Insulating Equipment C. Personal Protective Equipment D. Physical Inspection of Structure, Insulator string,

Conductor and Hardware Fitting

Work Procedures and Equipment & Tools

EGAT-Experiences on Live Line Working

E. Climbing Techniques, Fall ProtectionF. Understanding Effects of Environmental Conditions G. Equipment Operation & Testing and InstallationH. RiggingI. Communication J. Etc., Rescue Techniques

Work Procedures and Equipment & Tools

EGAT-Experiences on Live Line Working

Work Procedures and Equipment & Tools

A. Use and Care of Live Line Tools � Min. Insulating Distance of Tool / Dielectric Strength

� Care of Equipment and Tools

� Work Position at Different Potentials

� Effects Workers and Tools Hare on Electric field

� Type of Tools and Specification

� Insulating Ropes

EGAT-Experiences on Live Line Working

B. Use and Care of Insulating Equipment � Type of Insulating Tools

� Min. Insulating Distance of Tool / Dielectric Strength

� Proper Care of Insulating Equipment

� Effect Equipment Has on the Electric Field in Air Gaps

� Proper Use of Live-Line Insulating Ropes

EGAT-Experiences on Live Line Working

Good Team Work

SafetyWatcher

EGAT-Experiences on Live Line Working

EGAT Live Working CapabilitiesEGAT Live Working Capabilities

4. EGAT Lineman Training School

• Practical training school including Live Line working training sites for training new lineman, experienced lineman, lineman trainer and seniors lineman in all the methodology about the overhead line O&M, both De-energized and Live Line working.

• Knowledge based center in the overhead line O&M concepts, reference documents and current information such as methodology and technology, safety procedures, approved manuals, including data for selection suitable sound equipment & safety tools.

Lineman Training School

• Building Live Line Working team to perform maintenance works and set up new Live Line Working team for others utility.

• Erection senior lineman committee, Sharingexperience, Approved new methods, procedures and development tools.

• Contribution invention tools, innovation techniques, Best practices and Arrange EGAT Lineman Rodeo

Lineman Training School

Fundamental Training Course for New Lineman

115 kV Transmission Line Maintenance Training Course

Live Line Tools Maintenance & Testing Training Course

Accident Prevention and Safety Watcher Training Course

Work at High Position & Rescue Training Course

5. Live Working Training Activities

Transmission Line O&M Training Course for TNB & EVN

Live Line Maintenance Training Course for BPC

500kV Live Line Maintenance for Trainer Training Course at TNB Facility in Malaysia

500 kV Tension String Live Line Maintenance Training Course

500 kV Tension String Live Line Maintenance Team

500 kV Tension String Live Line Maintenance Team

Transmission Line Maintenance Training at NEC-Sudan

Transmission Line Technology & Engineering Design Training Course for NEC-Sudan

EGAT’s Lineman Team Technical Visit at NEC-SUDAN

115 kV and 230 kV Live Line Maintenance for NEC-Sudan

6. Live Working Development

Maintenance Tool Development

Live Line Bonding Wand ( FOR 115 / 230 / 500 kV Line)

EGAT-Experiences on Live Line Working

Live Working withPPAG

( For 500 kV Compact Line)

Development of 500 kV Live working with Portable Protective Air Gap

SpecialMaintenance MethodDevelopmentLive Working withPPAG ( For 500 kV Compact Line)

Development of 500 kV Live working with Portable Protective Air Gap

Development of 500 kV Live working with Portable Protective Air Gap

• Discussions with EPRI to developPPAGs for 500 kV Compact lines

• Visits to utilities that use PPAGs and/or operated compact 500 kV lines

• Training by EPRI solutions, Technical meetings with Experts

• Full-scale testsat EGAT Laboratory

Test Outlines

• PPAG alone

• Tower windowalone

• PPAG in tower

• Effects of worker, tools

• Defectiveinsulators

• Worst-caseworksite scenarios

• PPAG coordination with worksite

Development of 500 kV Live working with Portable Protective Air Gap

Test Conditions : Worst Case Conditions

• Tools

• Worker

• Brokeninsulators

• Shortedinsulators

• Floatingobjects

• Coordinate with PPAG

• Demonstrate byTest

Development of 500 kV Live working with Portable Protective Air Gap

Live Line Insulator Washing by Helicopter Underdeveloped

80 m.

De-mineral WaterHelicopter Fuel

Observers

Area

100

m.

Ope

rato

rs

Tea

m A

rea

Ope

rato

rs

Tea

m A

rea

Helicopter Position

60 m.

Site Selection & Preparation / Condition & L imitation

Landing Zone

Live Line Insulator Washing by Helicopter Underdeveloped

Live Line Insulator Washing by Helicopter Underdeveloped

7. Summary on EGAT Live Working

Live Line Working Activities

Live Line Working Activities

From January 1987 – April 2014Live Working Training Accident : NO Live Working OperationAccident :NO

EGAT’ s Live Line Working

ZERO– Accident & No Fatal

NO JOB IS SO IMPORTANT &

NO SERVICE SO URGENT

THAT WE CANNOT TAKE TIME

TO PERFORM OUR WORK SAFETY

THANK YOU

Safety Motto @ Live Working

Safety& Smooth& SuccessOperationSafety& Smooth& SuccessOperation

ICOLIM2014

Budapest HUNGARY

Thank Earth As All