Power Cable Technician - electricityhr.ca · 1 ElEctricity Human rEsourcEs canada national occupational standard Power Cable Technician 2013 Funded by the Government of Canada’s

ElEctricity Human rEsourcEs canada1

national occupational standard

Power Cable Technician

2013Funded by the Government of Canada’s Sector Council Program

This project was funded by the Government of Canada’s Sector Council Program.

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About Electricity Human Resources Canada (EHRC)

Electricity Human Resources Canada (EHRC) is a not-for-profit organization helping to keep the lights on in Canada by enabling a world-class workforce for the entire electricity industry. EHRC helps to build a better workforce by strengthening the ability of the Canadian electricity industry to meet current and future needs for a highly skilled, safety-focused, diverse and productive workforce.

For more information visit www.ElectricityHR.ca.

Cover photo credits: Hydro Ottawa

http://ElectricityHR.ca

In addition, we would like to acknowledge the generous time and support of employers, professional associations, educational institutions, unions and other key stakeholders who were consulted as part of the development of the Line Trade Development Initiative.

Table of ContentsIntroduction ............................................................................................................ 5

Duties .................................................................................................................................................................... 5

Tasks ...................................................................................................................................................................... 5

Sub-Tasks ............................................................................................................................................................. 5

Supporting Knowledge and Abilities ........................................................................................................ 5

Job Description ....................................................................................................6

Power Cable Technician: Occupational Analysis Profile ......9

Maintain a Safe Worksite ..............................................................................................................................10

Install UG Systems (Equipment and Cables) .........................................................................................10

Splice UG Cables .............................................................................................................................................10

Terminate UG Cables .....................................................................................................................................11

Maintain UG Systems ....................................................................................................................................11

Repair UG Systems .........................................................................................................................................11

Power Cable Technician: Occupational Requirements .........12

Maintain a Safe Work Site ............................................................................................................................12

Install UG Systems (Equipment and Cables) .........................................................................................15

Splice UG Cables ............................................................................................................................................17

Terminate UG Cables .....................................................................................................................................20

Maintain UG Systems ....................................................................................................................................22

Repair UG System ...........................................................................................................................................24


The National Occupational Standard (NOS) for Power Cable Technician contains four (4) levels of analysis, including:

Duties

Duties are groups of related tasks. Any analysis will contain between five (5) and 10 Duties. Duties are general areas of responsibility that represent large areas or segments of the work performed by Power Cable Technicians.

Tasks

Tasks are meaningful units of work related to each Duty. Each task has a beginning and an end; is typically performed within a specific time period; involves two (2) or more steps to complete; is observable and measurable; can be assigned or delegated and describes what a Power Cable Technician ‘must be able to do.’

Sub-Tasks

Sub-Tasks are the steps required to safely, efficiently and effectively complete a Task.

Supporting Knowledge and Abilities

Supporting Knowledge and Abilities describe the additional ‘enablers’ that allow the Power Cable Technician to complete a Task in the proper manner.

Introduction

Photo: Hydro Ottawa

6nos: powEr cablE tEcHnician

Power Cable Technicians construct, maintain, operate and repair underground electrical power distribution and transmission systems. They are employed by electric power

generation, transmission and distribution companies, electrical contractors and public utility commissions.

Job Description

Tools

•Pin torque wrench

•Propane torches/stoves

•Personal hand tools

•Load buster tool

•Torque wrench

•Electric power tools

•Bushing insert tool

•Gasoline powered tools

•Battery operated tools

•Primary phase identification tools

•Crimping tools

•Arc snuffer removal tool

•Cable identification tools (current pulse generator)

•Underground switching components

•Presses/dies

•Fibreglass reinforced plastic tools

•Cable pulling tools

•Cable preparation tools

•Digital wire micrometer

•Service restoration device

• Infrared heat gun

•Earth resistance tester

•Potential indicator

•Phase rotation meter

•Multi-meter

•Megger

•Digital recording ammeter

•Digital recording voltmeter

•Atmospheric tester

•Phasing sticks and accessories

•Hi-pot/VLF device

•Spiking tool/guillotine cutter

•Stencil set

•Ventilator

•Cable locator and attachments

•Leak detection tester

•Tap and die set

•Volt meter

•Micro OHM meter

•Amp meter

•Fault locating tools (surge generator ‘Thumper’, TDR)


Equipment

•Ladder

•Wire tensioner

•Rigging equipment

•Trencher

•Notebook computer

•Confined space safety equipment

•Aerial devices complete with attachments

•PPE (Personal Protective Equipment)

•Respirator

•Truck (e.g., RBD, HIAB, winch truck)

•Mini excavator

•Reel trailer

•Mini-derrick

•Cellular phone

•Skid-steer and attachments

Materials

•Safety manuals

•Prints

•Standards manuals

•Evacuation guidelines

•Company, engineering or manufacturer instructions

•Schematic drawings (e.g., circuit diagrams

•Training manuals

•Blueprints

•Safety circulars/newsletters

•CAD drawings

•Soft dig guidelines (hydrovac)

•Asbestos guidelines

•Provincial/territorial OHSA guidelines and regulations

•MSDS (Material Safety Data Sheets)

•Traffic control guidelines

•WHMIS guidelines

•TDG guidelines

•T&D circulators/newsletters

•Spill response procedures

•Environmental guidelines

•Corporate policies and procedures

•Confined space guidelinesesignated substances guidelines

Worker Behav-

iours

•Reliable

•Positive

•Respectful

•Displays a good work ethic

•Professional

•Attention to detail

•Adaptable

•Organized

•Competent

•Prompt

•Responsive

•Safety oriented

•Team player

•Calm under pressure

•Compliant

•Problem solver

•Responsible

•Dependable

•Responsive to direction and constructive feedback

•Able to lead, train and mentor others

•Cleanliness

•Takes pride in one’s work

Photo: Hydro Ottawa


General Knowl-

edge & Skills

•Troubleshooting skills

•Listening skills

•Communication skills

•Leadership skills

•Time management skills

•Coordinating skills

•Organizational skills

•Electrical theory knowledge

•Mentoring skills

•Mathematical knowledge

•Mechanical aptitude

•Knowledge of safe work practices and procedures

•Manual dexterity

•Public interaction skills

•Computer skills

•Knowledge of working on heritage/Aboriginal sites

Required Certifi-

cations & Licens-

es

•Confined space entry certification

•Transportation of Dangerous Goods (TDG)

•First aid and CPR

•Valid Driver’s Licence

•Forklift certification

•RBD certification (ON)

•Propane handling certification

•Fall arrest training

•Working in or around waterways certification

•Ground disturbance

certification

•UWPC (Utility Work Protection Code)/Standard Protection Code

•WHMIS

•Crane certification

•SF6 Certification (SK)

•H2S Certification

•Asbestos awareness

certification

•Respirator fit testing

•CVOP (commercial vessel operators proficiency) course


Disclaimer: Please note that the performance of the tasks contained within this document will be dependent upon the skill level of the Power Cable Technician, the employer’s policies and procedures and the work environment of the individual worker. Regulations and work requirements change periodically; therefore, employers and employees should refer to their applicable corporate, labour, provincial/territorial regulations, policies and procedures to obtain the most accurate and current requirements for their applicable work.

It has been recognized that the tasks presented in this occupational analysis require varying levels of skill to complete. To add more detail in regards to the skill level required to perform each task, the tasks have been levelled accordingly using the following legend/shading:

Power Cable Technician: Occupational Analysis Profile

Represent tasks performed by all Power Cable Technicians

Represent tasks requiring additional training

Represent tasks requiring advanced training and experience


Maintain a Safe Worksite

A.01

Participate in pre-job planning and design process

A.02

Establish work area protection

A.03

Participate in safe job planning process

A.04

Participate in tailboards

A.05

Use Personal Protective Equipment (PPE)

A.06

Perform switching operations

A.07

Establish electrical work protection

A.08

Work within confined spaces

A.09

Work within excavated sites and trenches

A.10

Perform rescue procedures (as required)

A.11

Utilize grounding and equipotential bonding procedures

A.12

Mentor other workers

A.13

Interact with customers and the public

Install UG Systems (Equipment and Cables)

B.01

Prepare cable chambers

B.02

Install auxiliary electrical equipment*

B.03

Install dips/risers

B.04

Install UG cables**

B.05

Install residential energy meters

B.06

Commission UG systems

* e.g., transformers, switchgear, pad- mounted equipment, submersible equipment

**e.g., XLPE/EPR, PILC, HVT, secondary, submarine cables

Splice UG Cables

C.01

Identify cable types and sizes

C.02

Verify cable destinations

C.03

Splice cables using hand tape technique

C.04

Splice cables using manufacturers’ kits

C.05

Splice PILC (lead cables) using hand applied technique

C.06

Splice secondary cables

C.07

Splice submarine distribution cables

C.08

Splice HVT (high voltage transmission) XLPE cables

C.09

Splice HVT (high voltage transmission) oil system pressurized paper insulated cables

C.10

Splice high-pressure liquid filled pipe-type cables

A

B

C


Terminate UG Cables

D.01

Terminate cables using hand tape technique

D.02

Terminate cables using manufacturers’ kits

D.03

Terminate PILC (lead cables) using hand applied technique

D.04

Terminate secondary cables

D.05

Terminate submarine distribution cables

D.06

Terminate HVT (high voltage transmission) XLPE cables

D.07

Terminate HVT (high voltage transmission) oil system pressurized paper insulated cables

D.08

Terminate high-pressure liquid filled pipe-type cables

Maintain UG Systems

E.01

Maintain distribution cables

E.02

Maintain transmission cables

E.03

Maintain secondary cables

E.04

Maintain transformers (live-front/dead-front)

E.05

Maintain switchgear (live-front/dead-front)

E.06

Perform work on energized secondary network systems

E.07

Maintain isolated secondary cables

E.08

Update prints and maintenance information

E.09

Conduct structure inspections

Repair UG Systems

F.01

Troubleshoot cable emergency situations

F.02

Locate cable faults

F.03

Test cables and equipment

F.04

Repair/replace cables and equipment (as required)

F.05

Install temporary emergency cables

D

E

F


Maintain a Safe Work Environment

TASKS SUB-TASKS SUPPORTING KNOWLEDGE & ABILITIES

1.Participate in pre-job planning and design process

1.1 Collaborate with engineering and operations personnel

1.2 Provide input into project design

1.3 Identify risks and/or hazards associated with proposed designs

Consider safety of other workers and the general public

1.4 Support efficiency, reliability and safety in job design and planning

2. Establish work area protection

2.1 Identify hazards

2.2 Assign tasks to crew members

2.3 Erect barriers

2.4 Establish traffic control (vehicle/pedestrian)

Obtain written and verbal street and road permits

Adhere to provincial/municipal regulations

2.5 Complete tailboard forms

Power Cable Technician: Occupational RequirementsA


3. Participate in safe job planning process

3.1 Discuss job with job planners, colleagues and crew members

Maintain awareness of complexity and level of effort required for job at hand

3.2 Identify potential hazards and risks

3.3 Develop work plans to enhance efficiency and reduce risk

4. Participate in tailboards

4.1 Document work plans and discussion points from job planning process

4.2 Discuss all aspects of the job with all crew members and ensure understanding

Assign specific duties to crew members

4.3 List all hazards and barriers associated with the job

When all crew members are in agreement, sign and date the form

Follow company policies and procedures for conducting tailboards

4.4 Update tailboard forms as new hazards arise or job tasks change

When hazards arise, ensure work stoppage to discuss potential barriers

5. Use Personal Protective Equipment (PPE)

5.1 Verify PPE is certified/not out of date Refer to corporate safety procedures manual for information on PPE use and re-certification requirements

5.2 Adhere to safety guidelines for required PPE

5.3 Select appropriate PPE (as per task)

5.4 Inspect PPE before use for any defects

6. Perform Switching Operations

6.1 Obtain applicable switching permits Maintain effective communication with system control

Follow company policies and procedures

6.2 Create switching orders/plans Demonstrate understanding of switching

Demonstrate understanding of isolation

Utilize various types of switching equipment

6.3 Follow switching orders/plans

6.4 Install lock-outs and tag-outs

7. Establish electrical work protection

7.1 Obtain applicable work permits (e.g., isolation permits, confined space permits)

Adhere to company and/or provincial/ territorial regulations

7.2 Isolate energy sources Conduct potential check

7.3 Establish working grounds


8. Work within confined spaces

8.1 Obtain required confined space permits Ensure up-to-date certification for working within confined spaces

8.2 Conduct atmospheric testing prior to entry

Adhere to exposure limits

Calibrate and bump test monitors and required safety equipment for confined space entry

8.3 Conduct infrared testing to identify potential hot spots

Ensure proper use of infrared camera/gun

8.4 Obtain required safety equipment for confined space entry (e.g., Kevlar blankets, rescue equipment, ventilators)

8.5 Confirm presence of attending observer/safety attendant at ground level

Maintain communication with ground level personnel

9. Work within excavated sites and trenches

9.1 Obtain applicable excavation permits Follow company policies and procedures

9.2 Identify and implement appropriate barriers and safety attendants

9.3 Obtain locates and clearances

9.4 Ensure proper shoring/sloping and cut backs of trenches

Demonstrate knowledge of different soil types

Ensure appropriate certification/licenses (as required) for excavation equipment

Follow provincial/territorial OHSA guidelines

10. Perform rescue procedures (as required)

10.1 Designate a crew member that will initiate a rescue plan, if required

10.2 Contact proper authorities

10.3 Assess the emergency situation for the type of rescue required

10.4 Utilize personal safety training as required (e.g., fall arrest, first aid, CPR)

Ensure required safety training and re-certification

11. Utilize grounding and equi-potential bonding procedures

11.1 Ensure appropriate size and rating Follow company/provincial/territorial policies and procedures for grounding and bonding

11.2 Inspect grounds

11.3 Test grounds


12. Mentor other workers

12.1 Demonstrate safe work practices on the job

12.2 Provide guidance and leadership Provide constructive feedback

12.3 Promote quality of work and attention to detail

Model positive work habits

12.4 Pass on knowledge and skills

12.5 Ensure competency of other workers Sign-off on performance of tasks

Allow opportunities for demonstration of skills (apprentices)

13. Interact with customers and the public

13.1 Inform customers of power interruptions Empathize with customers’ concerns and sensitivities (when applicable)

Utilize conflict resolution skills

13.2 Notify customers/public of possible hazards

13.3 Adhere to company policies and procedures for disclosure of information

Follow confidentiality policies

Install UG Systems (Equipment and Cables)

TASKS SUB-TASKS SUPPORTING KNOWLEDGE AND ABILITIES

1. Prepare cable chambers

1.1 Review applicable permits and standards (e.g., confined space entry)

Review company underground construction policies and schematic drawings

1.2 Gather/collect/order required materials

1.3 Plan cable layouts Identify cable locations duct positions, feeders, phasing position

1.4 Install racking, insulators and mole sets Follow company/provincial/territorial procedures for working within confined spaces

Plan layout

2. Install auxiliary electrical equipment (e.g., transformers, switchgear, pad-mounted equipment, submersible equipment)

2.1 Obtain applicable permits (e.g., de-energization)

2.2 Pre-commission equipment Ensure proper operation of equipment

2.3 Install designation labelling/nomenclature Interpret drawings, schematics, nomenclature

B


3. Install dips/risers

3.1 Obtain required permits e.g., road cut permits, work permits

3.2 Coordinate installation with other work crews (e.g., overhead operations)

3.3 Dress/frame the dip pole, as applicable

3.4 Pre-commission equipment Conduct testing (megger, hi-pot), phase check

3.5 Close in switches and fusing to energize cable

4. Install UG cables (e.g., XLPE/EPR, PILC, HVT, secondary, submarine cables)

4.1 Obtain proper clearances for installation

4.2 Obtain required permits

4.3 Adhere to proper bending radii Follow manufacturer’s guidelines

4.4 Collect required accessories and equipment Utilize proper racks and hooks

Utilize cable identification tags

4.5 Ensure ducts are clear of obstructions Utilize cameras

4.6 Complete cable rigging

4.7 Pull cables Maintain proper pulling tension

Utilize cable pulling devices

4.8 Test cable after initial install prior to completing splice

4.9 Maintain limits of approach Maintain safe working distance from mechanical parts, anchor points and rigging

4.10 Install cable caps for moisture barrier

4.11 Train cables

5. Install residential energy meters

5.1 Identify service cable at transformer Ensure proper tagging

5.2 Connect service at transformer

5.3 Conduct voltage testing e.g., 9-point check

5.4 Install meters

6. Commission UG systems

6.1 Verify proper installation of identification tags Verify mechanical phasing (colours)

6.2 Conduct testing VLF (very low frequency) test, megger, doble testing, DC, hi-pot

Following company policies and procedures

6.3 Energize circuit

6.4 Conduct electrical phasing with existing circuits

6.5 Update as-built drawings


Splice UG Cables


1. Identify cable types and sizes

1.1 Check cable identification tags for: type and size

1.2 Measure cable using cable gauge

1.3 Verify cable types and sizes using prints and electrical schematics

Interpret single-line drawings, schematics

2. Verify cable destinations

2.1 Refer to prints and electrical schematics to locate cables

Interpret prints and schematics

2.2 Tone existing cable to identify locates

2.3 Tag cables Utilize cable identification equipment

2.4 Phone cables

2.5 Spike/spear cables

3. Splice cables using hand tape technique

3.1 Prepare cable ends Follow company specifications

Complete measurements (using calipers, diameter tapes, etc.)

3.2 Press sleeve/connector

3.3 Tape cables to proper dimensions Use required tapes (e.g., SAP/semicon/vinyl/braid/silicone)

4. Splice cables using manufacturer’s kits

4.1 Review manufacturers’ instructions

4.2 Verify proper kit for type(s) of cable

4.3 Prepare cable ends Follow manufacturers’ instructions

4.4 Slide required components onto cable

4.5 Press sleeve/connector

C


5. Splice PILC (lead cables) using hand applied technique

5.1 Prepare cables Follow company specifications

Utilize appropriate PPE for working with PILC (respirators, disposable gloves, disposable coveralls, etc.)

5.2 Prepare outer lead sleeve

5.3 Slide outer lead sleeve over cable end prior to connecting conductors

5.4 Sweat (solder) connectors

5.5 Re-insulate cable using oil insulated tape

5.6 Replace shielding, if required

5.7 Slide over and centre lead sleeve

5.8 Sweat (wipe) ends

5.9 Fill with insulating compound or re-gel Allow time for cooling prior to re-pouring (top up)

5.10 Re-seal filling hole

5.11 Install fire-proofing materials e.g., arc-proof tape, etc.

5.12 Properly dispose of leftover lead Follow policies and procedures for handling of designated substances

6. Splice secondary cables

6.1 Remove insulation to half sleeve size on both cables

When working with AILC (asbestos insulated lead cables), follow all regulations and procedures associated with the handling or designated substances

6.2 Clean insulation with alcohol

6.3 Install shrink sleeve, or SAP and vinyl plice Follow company specifications

7. Splice submarine distribution cables

7.1 Prepare armour wires Splay wires back onto cable

7.2 Prepare cable ends Follow manufacturers’ specifications

7.3 Slide accessories onto cables

7.4 Press connectors

7.5 Re-position armour wires

7.6 Reinforce entire splice with #14 cable wire


8. Splice HVT (high voltage transmission) XLPE cables

8.1 Cut cables to length


Ensure endorsement/certification for splicing HVT XLPE cables

8.3 Slide accessories onto cables

8.4 Press connector/de-burr connector

8.5 Install accessories over connector and splice

8.6 Install moisture barrier (heatshrink), epoxy/wipe

8.7 Connect all bonding cables

8.8 Support splice with cleats/jacks

9. Splice HVT (high voltage transmission) oil system pressurized paper insulated cables

9.1 Turn down pressure from oil feeding tanks Maintain positive pressure

9.2 Rack/train in cables

9.3 Cut cables to length


9.5 Press connectors/ferrule

9.6 De-burr connectors

9.7 Re-insulate cable using hand applied crepe

9.8 Install rolls of paper insulation

9.9 Chamfer paper profile for stress cone

9.10 Re-establish semi-con to peak of stress cone

9.11 Install antimony over profile of stress cone and over carbon black semi-con crepe paper

9.12 Solder antimony together and to cable sheath

9.13 Slide over and connect accessories together

9.14 Wipe ends of splice to cable sheaths

9.15 Hook up vacuum treating equipment

9.16 Draw vacuum approximately 4 hours Verify vacuum levels according to company specifications

9.17 Conduct drop test

9.18 Fill joint with oil

9.19 Apply bonding Follow engineering specifications

9.20 Reinforce wipes with epoxy/tape and heat-shrink


10. Splice high-pressure liquid filled pipe-type cables

10.1 Secure permit for confined space entry

10.2 Reduce pressure

10.3 Install pipe freeze

10.4 Open pipe

10.5 Prepare cable ends

10.6 Press connectors/de-burr

10.7 Re-insulate cable using hand applied crepe Profile paper to specifications

10.8 Reinstall pipe Coordinate work with other groups, such as welding

10.9 Draw vacuum

10.10 Release freeze

Terminate UG Cables


1. Terminate cables using hand tape technique

1.1 Prepare cable ends Locate and follow company specifications

1.2 Press lug

1.3 Tape cable according to manufacturers’ specifications (e.g., SAP, semi-con, silicone)

Tape to proper specifications for cable being terminated

2. Terminate cables using manufacturers’ kits

2.1 Review manufacturers’ instructions

2.2 Verify appropriate kit based on cables

2.3 Prepare cable end according to kits’ specifications

Follow manufacturers’ instructions

2.4 Press lug

2.5 Install termination kit according to manufacturers’ instructions

3. Terminate PILC (lead cables) using hand applied technique

3.1 Prepare cable Follow company procedures

3.2 Slide wiping bell over cable end

3.3 Hand-tape stress cone

3.4 Slide body over cable end

3.5 Sweat lugs with solder

3.6 Slide porcelain head over body and bolt

3.7 Wipe wiping bell onto lead cable sheath

3.8 Fill pot head with insulating compound or re-gel

Warm filler pipe while the body is cooling

3.9 Tighten hood units Follow specifications

D


4. Terminate secondary cables

4.1 Remove insulation to length of lug When working with AILC (asbestos insulated lead cables), follow all regulations and procedures associated with the handling or designated substances

4.2 Press lug

5. Terminate submarine distribution cables

5.1 Prepare and terminate armour wires to armour clamp

5.2 Prepare cable Follow manufacturers’ specifications

Following procedures based on cable types (e.g., EPR – heat up cable to complete work in colder conditions)

5.3 Press lug

5.4 Install stress relief accessory

5.5 Connect bonding from cable shielding to armour clamp to system neutral

5.6 Install connector to overhead

6. Terminate HVT (high voltage transmission) XLPE cables

6.1 Cut cable to length


Ensure endorsement/certification for terminating HVT XLPE cables

6.3 Install termination kit (e.g., rubber termination)

Follow manufacturers’ instructions for installation of termination

6.4 Slide over porcelain pothead to connect to base plate

6.5 Wipe (solder) base to cable sheath

7. Terminate HVT (high voltage transmission) low-pressure oil system cables

7.1 Prepare scaffolding



7.4 Hand-tape stress cone

7.5 Slide over porcelain pothead to connect to base plate

7.6 Wipe (solder) base to cable sheath

7.7 Draw vacuum until desired micron reading

7.8 Drop test to specifications

7.9 Remove freeze and fill potheads with oil


8. Terminate high-pressure liquid filled pipe-type cables

8.1 Secure permit for working at heights

8.2 Install cable freeze


8.4 Prepare cable

8.5 Hand tape stress cone using crepe paper tape and rolls

8.6 Install pot head connect to base plate

8.7 Solder splice

8.8 Draw vacuum Verify vacuum levels according to company specifications

8.9 Remove cable freeze

8.10 Fill pot head with oil

Maintain UG Systems


1. Maintain distribution cables

1.1 Inspect XLPE/EPR cables Identify defects in elbows or splices

Conduct heat checks and infrared tests to identify hot spots

1.2 Inspect PILC cables Identify leaks, bulging, swollen/collapsed sleeves

1.3 Inspect all grounding and bonding connections

Check torque

Identify signs of corrosion

Scan for heat

1.4 Check for tracking

1.5 Clean cables Use appropriate cleaners for cable type

1.6 Ensure all tagging is in place

1.7 Re-rack cables, if required Re-position cables onto cable racking

2. Maintain transmission cables

2.1 Inspect splices and terminations Check for leaks

Inspect porcelain glass

2.2 Conduct oil analysis/PCB testing Check for gases, PCBs and moisture

2.3 Conduct jacket testing Conduct voltage tests

Verify integrity of cable jacket/surge arrestors

2.4 Test pumping plant alarms Ring in all alarms via valves

2.5 Verify pressures/gas levels/alarms For low-pressure oil, nitrogen filled cables

2.6 Monitor/test cathodic protection systems

E


3. Maintain secondary cables

3.1 Replace lugs

3.2 Verify insulation When working with AILC (asbestos insulated lead cables), follow all regulations and procedures associated with the handling or designated substances

3.3 Scan moles for heating

3.4 Ensure all tagging is in place Add/replace tags as required

4. Maintain transformers (live-front/dead-front)

4.1 Visually inspect for leaks and hotspots For live-front, check insulators and barriers for tracking

For dead-front, check bushings and bushing inserts for grounding and tracking

4.2 Conduct oil and gas sampling Follow regulations for designated substances/PCBs

4.3 Inspect elbows and bushings for signs of wear

4.4 Conduct voltage checks

5. Maintain switchgear (live-front/dead-front)

5.1 Verify switchgear operation Check alignment of contacts/blades

5.2 Conduct oil analysis tests Check oil/SF6 gas levels

Verify integrity of oil

5.3 Listen and look for tracking

6. Perform work on energized secondary network systems

6.1 Replace current limiter fuses When working with AILC (asbestos insulated lead cables), follow all regulations and procedures associated with the handling or designated substances

6.2 Replace connector sleeves

6.3 Replace porcelain insulators

6.4 Replace steel supports

6.5 Replace transformers

6.6 Replace protectors

6.7 Connect new customers to network

6.8 Disconnect existing customers from network

7. Maintain isolated secondary cables

7.1 Verify isolation Verify nomenclature, re-tag as required

7.2 Back-feed protection

7.3 Replace transformers

7.4 Disconnect customers

7.5 Replace connectors and lugs


8. Update prints and maintenance information

8.1 Mark up new plant and alterations to existing plant on as-built drawings

Send as-built drawings to engineering department/operations for edits

8.2 Update history

8.3 Verify as-builts redrawn by engineering

9. Conduct structure inspections

9.1 Inspect cable chamber components Identify defects in roof, cover, frame, floor, drains or walls

9.2 Inspect all locks

9.3 Update cable chamber drawings and maps

9.4 Take digital pictures of condition of cable chamber

Repair UG System


1. Troubleshoot cable emergency situations

1.1 Locate and isolate affected area Demonstrate knowledge of physical system

Utilize troubleshooting skills

Sectionalize feeder or distribution to isolate faulted cable/equipment

Coordinate with system control

1.2 Obtain applicable work permits

1.3 Conduct hazard risk assessment

1.4 Collect tools and equipment and personnel required

1.5 Ensure safety of worksite to complete emergency work

1.6 Allocate tasks to qualified workers Conduct tailboard

1.7 Arrange for delivery of materials (if not on-hand)

2. Locate cable faults

2.1 Obtain applicable testing permits

2.2 Verify circuit isolation

2.3 Remove energy meters (secondary faults)

2.4 Perform insulation test to confirm existence of fault

Ensure proper use of testing equipment (e.g., TDR, thumper, digiphone)

F


3. Test cables and equipment

3.1 Isolate cables

3.2 Verify testing requirements Following engineering specifications for acceptance test

3.3 Prepare cables for testing

3.4 Establish a safe zone for testing

3.5 Complete required tests Ensure proper use of various testing equipment

3.6 Verify and record test results Interpret meaning of test results

4. Repair/replace cables and equipment (as required)

4.1 Obtain all applicable permits

4.2 Confirm cables are isolated and grounded When working on low/high pressure transmission cables, an approved isolation procedure to control oil flow would be to install a cable freeze

4.3 Prepare cables for repair/replacement

4.4 Complete required repairs/replacement e.g., splices, terminations

4.5 Test repaired/replaced cable (e.g., megger, hi-pot)

4.6 Arrange for commissioning after work has been completed

4.7 Return permits and energize

5. Install temporary emergency cables

5.1 Isolate existing cable

5.2 Remove existing cable from system

5.3 Install temporary cable (primary or secondary) Inform public of locations of temporary cables

Ensure public safety

5.4 Energize temporary cable

5.5 Repair and replace existing cables


Documents

Power Cable Technician - electricityhr.ca · 1 ElEctricity Human rEsourcEs canada national occupational standard Power Cable Technician 2013 Funded by the Government of Canada’s