icolim2014 budapest hungaryicolim2014.org/2014/ppt/200.pdficolim2014 budapest hungary 1. egat...
TRANSCRIPT
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ICOLIM2014
Budapest HUNGARY
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Live Working Practices & Development ForEGAT Overhead Line in Thailand
By Kitti PETCHSANTHAD / [email protected]
ICOLIM2014 Budapest HUNGARY
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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
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1. EGAT TransmissionSystem
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EGAT TransmissionSystem
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EGAT TransmissionSystem
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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)
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1. PLANNING
2. ENGINEERING
3. CONSTRUCTION
8. KM & LE TRAINING
7. RESEARCH & DEVELOPMENT
6. ANALYSIS PROBLEM & SOLUTION
5. MAINTENANCE
4. OPERATION
EGAT TransmissionSystemWork
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2. EGAT Capability on theTransmissionSystemO&M
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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
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TL – INSPECTIONS TECHNIQUES
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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
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TL – MAINTENANCE METHODS
• De-energized Work
• Tower Erection / Restoration
• Conductor Stringing Work
• Grounding Installation
• Live Line Working
• Live Line Washing
• Aerial Live Washing
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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
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3. EGAT Live Working Practical Experiences
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Insulating Tool Methods ( Hot Sticks Work )
EGAT-Experiences on Live Line Working
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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 )
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Live Line Bare Hands
EGAT-Experiences on Live Line Working
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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
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High Risk Activity
Better Manage By
Safety Rules / Procedure & Best Training Course
EGAT-Experiences on Live Line Working
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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
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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
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Approach Distance & Access Method
Lineman Position
MAD : Safety Clearances
EGAT-Experiences on Live Line Working
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Minimum Approach Distance (MAD)
EGAT-Experiences on Live Line Working
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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
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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
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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
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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
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Good Team Work
SafetyWatcher
EGAT-Experiences on Live Line Working
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EGAT Live Working CapabilitiesEGAT Live Working Capabilities
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4. EGAT Lineman Training School
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• 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
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• 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
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Fundamental Training Course for New Lineman
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115 kV Transmission Line Maintenance Training Course
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Live Line Tools Maintenance & Testing Training Course
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Accident Prevention and Safety Watcher Training Course
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Work at High Position & Rescue Training Course
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5. Live Working Training Activities
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Transmission Line O&M Training Course for TNB & EVN
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Live Line Maintenance Training Course for BPC
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500kV Live Line Maintenance for Trainer Training Course at TNB Facility in Malaysia
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500 kV Tension String Live Line Maintenance Training Course
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500 kV Tension String Live Line Maintenance Team
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500 kV Tension String Live Line Maintenance Team
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Transmission Line Maintenance Training at NEC-Sudan
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Transmission Line Technology & Engineering Design Training Course for NEC-Sudan
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EGAT’s Lineman Team Technical Visit at NEC-SUDAN
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115 kV and 230 kV Live Line Maintenance for NEC-Sudan
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6. Live Working Development
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Maintenance Tool Development
Live Line Bonding Wand ( FOR 115 / 230 / 500 kV Line)
EGAT-Experiences on Live Line Working
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Live Working withPPAG
( For 500 kV Compact Line)
Development of 500 kV Live working with Portable Protective Air Gap
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SpecialMaintenance MethodDevelopmentLive Working withPPAG ( For 500 kV Compact Line)
Development of 500 kV Live working with Portable Protective Air Gap
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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
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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
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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
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Live Line Insulator Washing by Helicopter Underdeveloped
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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
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Live Line Insulator Washing by Helicopter Underdeveloped
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7. Summary on EGAT Live Working
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Live Line Working Activities
Live Line Working Activities
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From January 1987 – April 2014Live Working Training Accident : NO Live Working OperationAccident :NO
EGAT’ s Live Line Working
ZERO– Accident & No Fatal
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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
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ICOLIM2014
Budapest HUNGARY
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Thank Earth As All