Electrical Safety Management - canberra.edu.au · the electrical installation or equipment has been isolated, with locks and ... Ensure a JSA, SWMS, electrical isolation and test

PRO-1070 V1.0 Electrical Safety Management.doc Page 1 of 41

Custodian: Facilities Management Reviewed: March 2017 Next Review: March 2018

Electrical Safety Management

PURPOSE

To define the minimum requirements for managing the health and safety risks associated with

performance of electrical work, the use of associated electrical tools and test equipment.

1 SCOPE

This procedure applies to all electrical work or use of electrical tools or test equipment within areas

controlled by the University of Canberra. All persons shall comply with the requirements of this

procedure.

This procedure shall be read in conjunction with the Permit to Work System PRO-1000, Isolation

Lockout and Tagging PRO-1060 and Barriers and Barricading PRO-1080 and any other relevant

Permit to Work procedures.

2 Electrical Safety Requirements

2.1 Electrical Supervision Requirements

2.1.1 Supervision of electrical work shall only be performed by an appropriately trained

and licensed electrical worker.

2.1.2 The following actions shall be performed by the Electrical supervisor:

Take all reasonably practicable steps to ensure the electrical safety of all

throughout the work task.

Provide electrical advice and support for all workers undertaking electrical

work

Ensure that required Safe Work Method Statements (SWMS), Job Safety

Analysis (JSA), and Electrical isolation and test certificate are complete and

cover all hazards associated with the work prior to commencing.

Ensure all electrical work is undertaken with safety as the first priority

Ensure all staff perform tasks in a manner consistent with the Safe Work

Method Statement (SWMS), Job Safety Analysis (JSA), and Electrical

isolation and test certificate for this work.

Ensure that suitable controls are in place to manage any hazards or risks

that might arise while undertaking this electrical work

Undertake inspections on electrical work being performed to ensure that

the electrical work is carried out in accordance with the Safe Work Method

Statement (SWMS), Job Safety Analysis (JSA), and Electrical isolation and

test certificate.

Sign onto the JSA, SWMS and Electrical isolation and test certificate as the

site electrical supervisor

Sign off the Electrical isolation and test certificate to advise that electrical

services are being returned to UC in a safe and operable condition.




Ensure that prior to leaving site, any partially completed electrical works are

appropriately isolated and locked per PRO-1060 Isolation Lockout and

Tagging Procedure (PRO-1060). This includes a requirement to attach a “Do

Not Operate” tag to an isolation lock at every isolation point. This tag is to

include details of the circuits isolated, services affected, length of time this

isolation will remain in place and the electrical supervisor’s contact details.

2.2 Electrical risk management

2.2.1 Prior to undertaking electrical work or work activities involving a potential electrical

hazard, a risk assessment shall be completed and implemented that identifies all

electrical hazards and required controls to ensure the work is undertaken safely.

The worker undertaking the electrical work and associated risk assessment shall:

Be the holder of an electrical license which authorises the worker to perform

the work and signifies their competency and knowledge of this type of

work.

Undertake the risk assessment and document the outcome of this

assessment within a Job Safety Analysis (JSA), Safe Work Method Statement

(SWMS) and the Electrical isolation and test certificate.

The JSA is to be completed at the site and just prior to commencing the

work. This ensures all site and time specific hazards are identified and

appropriately controlled through the risk assessment process just prior to

work commencing.

The supervisor of electrical work shall ensure the risk assessment of electrical work

follows this five step process.

STEP 1 – Hazard Identification

STEP 2 – Risk Assessment (inherent risk)

STEP 3 – Control risks (select using the hierarchy of controls)

STEP 4 – Risk assessment with risk control measures (residual risk)

STEP 5 – Monitor and review risk control measures.

2.2.2 Hazard Identification

Hazards from electrical equipment or installations may arise from, for example:

the design, construction, installation, maintenance and testing of electrical

equipment or electrical installations

design change or modification

inadequate or inactive electrical protection

where and how electrical equipment is used. Electrical equipment may be

subject to operating conditions that are likely to result in damage to the

equipment or a reduction in its expected life span. For example, equipment

may be at greater risk of damage if used outdoors or in a workshop




electrical equipment being used in an area in which the atmosphere

presents a risk to health and safety from fire or explosion, for example

confined spaces

type of electrical equipment. For example, ‘plug in’ electrical equipment

that may be moved around from site-to-site, including extension leads, are

particularly liable to damage

the age of electrical equipment and electrical installations

work carried out on or near electrical equipment or electrical installations,

including electric overhead lines or underground electric services.

Exposure to high electromagnetic fields may also present a potential

hazard for workers

2.2.3 Assessing Electrical Risks

The risk of electrical hazards shall then be assessed, this shall include consideration

of:

the severity of the electrical hazard (i.e. an assessment of the risk likelihood

and consequence)

whether existing control measures are effective

what action should be taken to control an electrical risk

how urgently the action needs to be taken.

what is the potential impact of each electrical hazard?

how severe could the electrical hazard be? For example arc flash, direct

contact causing electrocution, fire or explosion causing serious burns or

death.

how many people are likely to be exposed to the hazard?

how likely is the hazard to cause harm?

could it happen at any time or would it be a rare event?

how frequently are workers exposed to the hazard?

the conditions under which the electrical work or equipment will occur or

be used, for example wet conditions outdoors or confined spaces

the safety of work practices and procedures that make up the steps of this

work process. For example how to safely perform the initial isolation and

“test for dead” work

the capability, skill and experience of workers involved.

2.2.4 Selecting electrical controls measures

Once hazards have been identified and the risks assessed, appropriate control

measures shall be put in place.

The hierarchy of control shall be used to select controls that most effectively

eliminate or at least minimise the risk so far as is reasonably practicable. The




following table provides an example of a control measure for each level of this

hierarchy.

Hierarchy of Control Examples of Electrical risk control measures

Elimination Eliminating risk factors by designing-in or designing-

out certain features into an electrical system,

hazards may be eliminated.

Substitution Use extra-low voltage electrical equipment such as

a battery-operated tool rather than a tool that is

plugged into mains electricity.

Isolation Isolating electricity so it is not live, thus preventing

workers from coming into contact with electricity

while undertaking work.

Engineering controls Installing residual current devices (commonly

referred to as safety switches) to reduce the risk of

receiving a fatal electric shock.

Administrative controls* Establishing exclusion zones, use of permits and

warning signs.

Personal protective*

equipment (PPE)

PPE includes protective eyewear, insulated gloves,

hard hats, aprons and breathing protection. Most

forms of PPE are not relevant to minimising electrical

risks in workplaces, except in relation to energised

electrical work.

* Administrative controls and personal protective equipment shall be used to

assist with residual risk only after higher order controls have been utilized as much

as is possible.

This may involve a single control measure or a combination of two or more

different controls. Ensure consideration is given to the possibility that a chosen risk

control measure might introduce a new hazard to the work. The following table

lists the minimum electrical risk control measures UC expect to be listed within

JSA/ SWMS for the following electrical risk examples.




Electrical Risk Minimum Control Measures

Overloading power circuits Ensuring power circuits are protected

by the appropriate rated fuse or circuit

breaker to prevent overloading

If a circuit keeps overloading, don’t

increase the fuse rating as this creates

a fire risk due to overheating. Instead,

ensure the circuit is not re-energised

until the reason for the overload has

been determined by a competent

person.

Damage to leads, including cord

extension sets and flexible

cables

Ensuring that leads, including cord

extension sets and flexible cables, are

arranged so they will not be damaged.

For example, avoid running leads

across the floor or ground, through

doorways and over sharp edges, and

use lead stands or insulated cable

hangers to keep leads off the ground.

In many heavy industries, cable

protection ramps are used to protect

cables.

Electrocution Do not use leads and tools in damp or

wet conditions unless they are

designed for those conditions Ensuring

circuits where portable electrical

equipment can be connected are

protected by appropriate safety

switches and are properly tested,

tagged and maintained.

Safety switches, circuit breakers

or other over current protective

devices including fuses

Ensuring safety switches are effective

by regular testing and tagging. If safety

switches, circuit breakers or other over

current protective devices including

fuses are triggered into operation,

ensure circuits are not re-energised until

the reason for the operation has been

determined by a competent person.

2.2.5 Monitor and Review of Electrical Control Measures

Electrical Controls shall be inspected and the associated risk assessment shall be

reviewed regularly by the electrical supervisor throughout the work process and

additionally when:




there has been any form of safety incident within the work area

when an electrical control measure is identified as not working as expected

before a change at the workplace that is likely to give rise to a new or

different risk to health or safety

if a new hazard is identified

if the results of an inspection or consultation indicate that a review is

necessary

if a UC representative requests a review

At the start of every shift or arrival to worksite after an absence of more than

an hour

at least every two years

2.2.6 Commencing any Electrical Work

No electrical work will be undertaken other than in accordance with this

procedure. No live electrical work is to be undertaken at UC. All exposed parts of

electrical equipment shall be treated as energised or ‘live’ until the equipment is

isolated and proved not to be energized “test for dead”, with any related high

voltage exposed parts earthed.

Before electrical work is carried out, all electrical equipment shall be tested to

prove the electrical installation and equipment is electrically safe and that all

personnel are electrically safe. This involves performing the following actions:

the work area cleared of obstructions

the electrical installation or equipment has been isolated, with locks and

personal tags applied to isolation points, in accordance with Isolation

Lockout and Tagging Procedure (PRO-1060)

the electrical installation or equipment has been tested and proved to be

de-energised “test for dead”

ensure all electrical safety and testing equipment is in test date and good

working order

ensure all electrical worker tools are in good working condition and suitable

for the task

ensure appropriate supervision is applied

Appropriate PPE and clothing is worn (i.e. Category 1 PPE for electrical

work, Category 4 PPE for high voltage electrical work).




2.3 Electrical Isolations

2.3.1 Isolations for electrical work can only be performed by an electrical worker.

2.3.2 The following Appendices list the required process steps for:

Appendix 1 Simple Isolation process

Appendix 2 Inch and Test process

Appendix 3 Break in Work process

These shall be considered the minimum requirement when performing these

processes.

2.3.3 The electrical worker shall positively identify the isolation point or points of the

equipment being worked upon by reference to site documentation and

confirmed by:

consulting with Facilities Management; and

Utilising knowledge from training and/or experience.

If no site documentation is available, the electrical worker shall positively identify

the isolation point by:

consulting with Facilities Management; and

Utilising knowledge from training and/or experience.

2.3.4 The electrical worker shall undertake all required isolations in accordance with the

Isolation Lockout and Tagging Procedure (PRO1060).

2.3.5 Additional non-positive isolations may be performed to further safeguard electrical

workers from inadvertent equipment operation e.g. the removal of circuit control

fuses from a motor starter. In some cases, there may also be two sources of supply,

multi voltage types, back feeds, solar power feeds or incorrect isolation of supply.

Testing stored voltage sources such as variable speed drives or capacitor banks

involve additional risk and particular care should be taken when isolating and

discharging stored voltage sources.

2.3.6 When performing an electrical isolation, the electrical worker shall do the

following:

Ensure they hold an electrical licence to perform the work.

Understand the test procedures to be implemented and be competent in

the use of the testing equipment.

Wear PPE appropriate to the isolation being performed.

Utilise a testing method that is safe and effective (preference for isolations

and testing to be performed at circuit breakers where possible).

Test the test instrument on a known voltage supply source and verify a

positive (voltage present) indication. This should be a source that the worker




has clear access to and does not involve coming close to or in contact with

untested electrical parts or areas of high fault current.

After the initial test for dead, the electrical worker shall immediately re-test

the test instrument for operation on a known voltage supply to prove the

test instrument is operational and this should indicate a positive (voltage

present) indication. If a negative indication for voltage levels is shown on

the test instrument, the cause shall be investigated and the electrical parts

shall still be treated as live.

Test the electrical isolation by attempting to start the equipment.

Attempting to start the electrical equipment shall be achieved by manual

operation (or remote if no manual is available).

Be aware that isolators can fail and that some equipment may not start until

a certain condition exists e.g. a limit switch is tripped.

Test the electrical parts required to be touched by a phase to phase, phase

to neutral, phase to earth and neutral to earth test. Any indication other

than a no voltage (negative) state shall be investigated. The electrical

worker shall exercise care not to trip possible essential circuits that a residual

current device (RCD) may supply, as a phase to earth test may

unintentionally trip circuits.

Isolate equipment in accordance with Isolation Lockout and Tagging

procedure (PRO-1060) including locking and tagging the isolated source.

2.4 Undertaking electrical work

2.4.1 As a minimum, all electrical work undertaken at UC shall be undertaken in

accordance with requirements of AS 3000:2007 Electrical installations (also known

as the “wiring rules”) and an appropriate JSA (FRM-1001), SMWS and Electrical

isolation and test certificate (FRM-1071) completed.

2.4.2 Where UC procedures and specifications exist that exceed the safety

requirements of AS 3000:2007 Electrical installations, the additional safety

precautions within the UC procedures and specifications shall be followed.

2.4.3 The electrical worker shall perform any required electrical tests prior to restoration

of supply. This shall include a visual inspection, earthing and/or insulation

resistance tests, polarity and RCD tests.

2.4.4 All electrical work shall be recorded on the Electrical isolation and test certificate

which shall be completed by external contractors for all electrical work

performed at, on or for UC.

2.5 Completing Electrical Work

2.5.1 On completion of Electrical work, the following shall occur.

all tools and equipment shall be removed from the work area

all cables not connected shall be terminated with appropriate connectors.

No bare conductors are to be left exposed




all covers and doors shall be placed securely in position, with switchboard

external doors locked or bolted and keys returned to facilities management

electrical workers shall remove any personal isolation locks or personal

danger tags from the positive isolation point and reconnect the equipment

to the electrical supply. If voltage checks are required to be performed, the

appropriate PPE and clothing requirements must be worn

electrical equipment placed back into service must be checked to ensure

it is functioning correctly

any electrical equipment not able to be put back into service must be

isolated from the supply at the circuit breaker or through the removal of the

cable from the supply. Isolated equipment shall be isolated in accordance

with the Isolation Lockout and Tagging Procedure (PRO-1060) which

includes being locked and tagged with a completed out of service tag

attached including the electrical supervisor’s contact details.

the electrical worker who performed the electrical work, or the electrical

worker who provided direct supervision of the electrical work, shall

document the work completed on the Electrical Isolation and test

certificate (FRM-1071), provide their electrical licence number and sign the

certificate to confirm that:

o all work was undertaken in accordance with the WHS Act, and

Regulation.

o the electrical installation affected by the electrical work has been

tested to ensure that it is electrically safe and is in accordance with

the requirements of the “wiring rules” AS3000, AS/NZS 3012: Electrical

Installations in Construction and Demolition; any other Australian

standard and Code of Practice for Managing Electrical Risks in the

Workplace.

o the electrical equipment affected by the electrical work is safe.

Electrical equipment that has been de-energised must be re-energised

through a controlled process in accordance with the Isolation Lockout and

Tagging Procedure (PRO-1060), the relevant isolation plan, Electrical

isolation and test certificate (FRM-1071) and must not be inadvertently

reenergised.

When re-energising equipment, the electrical worker must inform other

workers, facilities Management and other persons impacted or in control of

equipment about to the reenergizing. This is to occur in a manner that is in

accordance with the requirements of the Isolation Lockout and Tagging

Procedure (PRO-1060)

2.6 Electrical tools, test equipment and safety

2.6.1 Electrical Tools

At a minimum, the tools required to perform electrical work shall be insulated and

rated at the voltages being applied to the tool (e.g. voltage indicators on the




tool with fuse protection to prevent short circuits). When selecting electrical tools

for any electrical work, the following shall be considered:

the device’s function, range and class of accuracy must be appropriate to

both the electrical work and the conditions where the work is being

undertaken

electrical test equipment shall be verified as working and safe for use

before and after testing of the electrical equipment

to ensure electrical safety, the combination of leads and instruments used

shall be capable of withstanding the impulse voltages and fault current

levels that could be experienced at the location

the rating for test instruments and test probes used on 415/240V mains

voltage equipment connected on the supply side of a main switchboard

shall be Installation Category III (3) or IV (4)

Type A probes (leads) should be used for measuring supply voltages

(415/240 V AC). Therefore, workers who perform live testing or fault finding

in switchboards shall use at least Category III (3) devices with Type A

probes.

2.6.2 Electrical safety equipment

Each item of electrical safety equipment must be tested every six months. Items

that pass the test are to be tagged with the next test date and returned to

service. Any item that does not pass the test must be removed from service. After

repair, an item must be tested before being returned to service.

Whenever an item of equipment is tested by an external organisation a written

test report shall be provided. The report is to include details of the test methods

used and the test results.

Insulating mats and covers

Insulating mats shall be inspected every six months by an approved testing facility

and tested in accordance with AS/NZS 2978 – Insulating Mats for Electrical

Purposes. Mats are to be washed with soap and water, stretched and examined

for the following prior to use:

blisters, cracks, cuts or holes

embedded foreign matter

defective fastenings.

Insulating gloves

Insulated gloves used for low voltage work shall be Class 00 and shall be Class 0

for high voltage isolation and access.

Insulated gloves are to be either:




inspected and tested every six months by an approved testing facility in

accordance with AS 2225 – Insulating Gloves for Electrical Purposes

replaced every six months.

Damaged or faulty insulated gloves must be appropriately disposed of to

ensure that they are not used for electrical work.

Low voltage rescue kit

A low voltage rescue kit shall be inspected every six months by an approved

testing facility and shall contain the following equipment:

Insulated crook

Insulating gloves

‘Isolated Here in Emergency’ sign

Burn dressings

Fire blanket

Torch.

2.6.3 Electrical test equipment

For the purposes of this section, electrical test equipment includes any item of

equipment used to test or otherwise determine the status of an electrical item.

General requirements

Test instruments that are to be used or connected to electrical equipment should

meet the following conditions:

be suitable for the work in terms of their function, operating range and

accuracy

be in good condition and working order, clean and have no cracked or

broken insulation. Particular care must be taken regarding the condition of

the insulation on leads, probes and clips of test equipment

pose no danger of electrocution to workers or damage to the electrical

equipment during testing

have suitably insulated leads and connection probes that enable

connection or contact with energised parts to be made with minimal risk to

the electrical worker

provide suitable protection against hazards arising from over-voltages that

may arise from or during the testing or measurement process.

Testing




Testing of electrical test equipment is to be undertaken every six months. Test

results are to be recorded within the electrical test equipment register. Test

equipment used for testing on low voltage circuitry shall be tested to 1000 volts

AC and 1500 volts DC.

Calibration

Calibration of electrical test equipment is to be undertaken in accordance with

manufacturers’ requirements for each type of test equipment used, or every 12

months – whichever is the shorter. Calibration results are to be recorded within the

electrical test equipment register.

Inspection

Prior to each use, electrical test equipment (including associated leads, clips,

sockets, probes) are to be inspected for any damage to insulation. Each

electrical test instrument is to have a durable sticker placed on it to indicate that

it has been tested. The sticker is to contain information about who performed the

test and when the next testing is due.

2.6.4 Electrical Equipment

All electrical equipment at UC is to be designed, constructed, installed,

protected, maintained and tested and tagged in accordance with the

requirements of this procedure and Isolation Lockout and Tagging procedure

(PRO-1060) to minimise, so far as reasonably practicable, risks to health and safety

associated with electrical hazards in connection with the electrical equipment.

The following are general safety rules when using electrical equipment or

undertaking electrical work:

always check to ensure that the electrical equipment used has been tested

and tagged and is in current test date

all portable electrical equipment used must be connected to a safety

switch (refer to the safety switches section for specific requirements)

if using a portable safety switch, always test that it trips after the equipment

being used is plugged in, by pressing the test button on the side of the

safety switch

ladders and work platforms used for any form of electrical work shall always

be of fiberglass construction i.e. ladders made of conductive material (e.g.

metal) shall not be used.

never use a double adaptor or piggy back plug in a workshop, construction

site or other work areas, including offices; use an appropriate power board

if any electrical leads to portable equipment are damaged, or single

insulated coloured cables are showing, do not use. Tag such leads as out of

service and organize repair.




if personal electrical equipment is to be used at the workplace by a worker,

the worker needs to visually check it to ensure that it is safe, has been

tested and tagged; and that this tag is within current test date.

look for obvious damage, defects or modifications to the electrical

equipment, including accessories, connectors, plugs or cord extension

sockets

check that flexible cords are effectively anchored to equipment, plugs,

connectors and cord extension sockets

check that covers, guards, etc. are secured and working in the manner

intended by the manufacturer or supplier

check that ventilation inlets and exhausts are unobstructed.

All electrical equipment that is hired, or otherwise brought onto UC by a third

party shall be:

visually inspected to ensure that it is in a safe condition

ensure that any attached test and tag is within current test date

inspected, tested and tagged for the duration that the equipment is hired.

2.6.5 Unsafe electrical Equipment

If any electrical equipment is found to be faulty or is out of test date, the following

actions must be undertaken:

the equipment shall be immediately disconnected or isolated and removed

from use and tagged with a ‘Out of Service’ tag (and lock where practical)

the line supervisor and Facilities Management are to be notified

immediately

the ‘Out of Service’ tag (and lock where used) is only to be removed by the

qualified repairer upon actioning the repair

the equipment returned to service when the piece of electrical equipment

has been repaired or replaced and tested and tagged by an electrical

worker.

2.6.6 Electrical Switchboards

The following is to be applied to switchboards located at UC:

all electrical switchboards shall be kept free of obstructions and the doors

kept locked (this should be included in the relevant workplace inspection

checklist)

a minimum clearance zone of 600mm from an open switchboard door shall

be allowed in front of a switchboard and shall be clearly indicated with

yellow painted lines on the floor.

painted lines on the floor

where required protection from vehicle damage should be implemented




periodic inspections of switchboards by an electrical worker to provide

scheduled maintenance (which may include advice on conducting

thermo scans) and tests on switchboards in accordance with the

applicable maintenance program

plans and drawings may only be stored inside a switchboard where

appropriate storage compartments are available

spare parts and equipment shall not be stored inside a switchboard if they

have the potential to introduce hazards to the switchboard (i.e. remove

parts from boxes to eliminate fire hazard, secure or store so that they do not

cause hazards; i.e. fall onto workers).

2.6.7 Generators

Fixed Generators

Fixed generators used to provide backup electrical supply to UC assets shall

comply with the requirements of AS 3010:2005 Electrical Installations – Generating

Sets. In addition, the installation of fixed generators may be required to comply

with requirements of electricity distributors and other relevant regulatory

authorities. All fixed generator installations and associated supply switching

equipment shall be designed by an appropriately qualified and experienced

electrical engineer.

Portable Generators

Depending on generator output, portable generators used at UC workplaces

Shall comply with the requirements of AS 2790:1989 Electrical Generating Sets –

Transportable (up to 25 kW) and AS 3010:2005 Electrical Installations – Generating

Sets.

Specialist advice shall be sought from an appropriately qualified electrical worker

to identify the correct safety protection before using portable generators on UC

sites and if required, install a temporary earth that is confirmed by testing the

earth resistance.

When using portable generators at UC workplaces, the user of the generator

shall understand the electrical safety requirements associated with the generator

and the purpose for which it is being used to ensure that adequate risk controls

are implemented. This shall be achieved by reading the operators manual and

any other technical specifications documentation at a minimum. When

connecting a portable generator to a facility (i.e. pump station, water treatment

plant) via a ‘plug and play’ configuration, the following shall occur:

an interlock system shall be installed to prevent incorrect connections being

made

a detailed work instruction and JSA/SWMS developed to detail the

connection process




workers are trained and competent in performing the connection activities

and in the operation of the portable generator.

Any connection of a portable generator to a UC facility where the connection is

made directly into a switchboard using cable tails or lugs must only be

undertaken by an electrical worker. No other appliances shall be connected to a

portable generator whilst it is connected to a UC facility. When identifying

appropriate risk controls for the use of portable generators at UC workplaces, the

following shall be considered:

Where a generator is directly supplying a site switchboard, all sub-mains

and final sub-circuits shall be protected by an RCD and earth electrode.

Isolated winding generators shall only be used on construction or demolition

sites with the following conditions:

o Each winding shall supply not more than one item of Class 1

(earthed conductive parts) electrical equipment.

o One or more items of Class II (double insulated) electrical

equipment may be connected to an isolated winding generator.

o Portable RCDs shall not be the source of electrical protection for

workers as they will not operate as there is no neutral to earth

connection upstream of the RCD.

o Two pole switching must be implemented as both conductors are

considered to be live.

o The connection of the generating set bonding system to the

general mass of earth through an earth electrode is not required or

recommended as there is double insulation from the live parts to

the frame.

Generators providing electrical supply via permanently connected RCDs

with maximum rated residual current of 30 mA, operating in all live (active

and neutral) conductors, may be used to supply multiple items of

equipment under the following conditions:

o The RCD protected system allows the use of multiple Class I (metal

frame with a bonding conductor) items as the first fault causes a

residual current device to trip.

o The connection of the generating set bonding system to the

general mass of earth through an earth electrode is not required or

recommended.

2.6.8 Cathodic protection systems

All cathodic protection systems installed and operated at UC workplaces shall

comply with the requirements of AS 2832:3:2005 Cathodic Protection of Metals –

Immersed Structures and AS 2832.4:2006 Cathodic Protection of Metals – Internal

Surfaces.

Additional requirements for the design, installation and operation of cathodic

protection systems are defined within the Work Health and Safety Regulation.




2.6.9 Managing Static electricity

Static electricity has the potential to cause inadvertent ignition of flammable

mixtures and can also lead to other operating problems in electrical and control

systems. The management of static electricity shall be undertaken in accordance

with AS/NZS 1020:1995 The Control of Undesirable Static Electricity.

2.6.10 Welding Safety

Workers shall consider the following when using an electric welder at UC:

develop a JSA/SWMS to evaluate the hazards and risks

Perform work as per the requirements of Hot Work Procedure (PRO-1040),

Including gaining authorization via a Hot Work Permit (FRM-1041).

check that welding equipment has been tested and tagged and is in

current test date

do not touch live electrodes with your hands unless using insulated gloves

do not allow any part of the electrode to touch any part of your body

ensure the electrode holders are of an ‘all insulated’ type

ensure the welding leads are correctly connected and in good condition

ensure that the risks are appropriately managed when undertaking welding

activities within a confined space, flammable / explosive environment or

“area of special consideration” as defined within the Hot Work Procedure

(PRO-1040).

2.6.11 Asbestos or Asbestos Containing Material

Workers are prohibited from undertaking work on a switchboard or any other

electrical equipment if the work has the potential to disturb asbestos or Asbestos

Containing Material (ACM). Refer to the Asbestos Management Procedure (PRO-

1010) for further information.

2.7 Electrical Exclusion Zones

When performing work, no person, plant or thing shall come within the electrical

work exclusion zone. A person includes any article of clothing worn by the person,

and any conductive object the person is handling. Electrical work exclusion zones

are minimum safe distances that shall be maintained from live electrical parts.

The electrical safety exclusion zone applies to people, operating plant and

vehicles, and extends in all directions, not just sideways. The exclusion zone

distance is dependent on the following:




the type of electric part (e.g. exposed part or overhead) – the voltage

present (e.g. 240V or 33kV)

the qualification / competency of the worker

the type of activity (e.g. operating plant or vehicle).

The Electrical Supervisor of electrical works is to identify the electrical

exclusion zone in terms of size within the Safe Work Method Statement

(SWMS), Job Safety Analysis (JSA), and Electrical isolation and test

certificate for this work.

communicate this exclusion zone information to any person who will need

to work around is or might be impacted by it.

2.7.1 Exclusion zones for work near energized electrical parts

When working near energised electrical parts (not including working near

overhead electrical lines), the risk management procedures described within this

procedure shall be used to assess this hazard and associated risk.

If there is a safety risk associated with working near energised electrical parts a

written risk assessment shall then be made to help determine the risk level and

decide on appropriate risk control measures. This assessment shall include

completion of a Safe Work Method Statement (SWMS) for this work, a Job Safety

Analysis (JSA), and Electrical isolation and test certificate. This risk assessment is to

be reviewed by UC prior to undertaking this work.

Hazards and associated risk to be assessed include:

electric shock if exposed energised parts are touched

explosion, for example if a metal tool is dropped onto bus bars causing a

short circuit

exposed high-temperature parts causing burns to bare skin

electrical fires induced, for example, by allowing moisture or dust to enter

electrical equipment.

The following factors should be taken into account in assessing risks:

o type of work carried out and tools or equipment used

o proximity of the work to energised parts

o the types of tools and equipment used in the work, for example the

conductive properties of tools

o environmental conditions such as confined space, wet surfaces or

unfavourable weather

o assessing the need to repair equipment while it remains energised,

for example cleaning a low voltage switch room

o work that may impose additional risks, for example welding or

grinding that could damage adjacent electrical lines or equipment.




2.7.2 Overhead electrical lines exclusion zones

Exclusion zones (also known as approach distances) are listed within the Safe

Work Australia Guide for working in the vicinity of overhead and underground

electrical lines. This includes the following exclusion zones set for an (electrically)

untrained person operating plant in proximity to overhead electrical lines.

Work within an electrical exclusion shall be avoided so far as it is reasonably

practicable. Where work within an electrical exclusion zone set for an untrained

persons cannot be avoided, a risk assessment shall be conducted, adequate

control measures implemented to manage the hazard and risks and required

approvals obtained as outlined below.

2.7.3 Restrictions for working near overhead electric lines

Any person is prohibited from undertaking work on overhead electrical

Lines within UC grounds or facilities without first seeking express approval from UC.

Work on overhead electrical lines shall be performed by suitably qualified

contractors only.

The following restrictions also apply to work near overhead electrical lines:

No person or item of plant on UC controlled workplaces, is to enter the

electrical exclusion zone for overhead electric lines set for an untrained

person, unless:

o there is evidence of consultation with the relevant electrical supply

authority; and

o the worker is an ‘Authorised Person’ or an ‘Instructed Person’

For any site controlled by a Principal Contractor (other than UC), work must

not be conducted within an electrical exclusion zone set for an untrained




person without prior evidence of consultation with the owner of the

electrical asset and prior written permission being received from a senior

officer of the Principal Contractor. UC Facilities Management shall be

notified prior to the commencement of the work within the exclusion zone.

A trained safety observer/spotter (Refer to Appendix B for safety observer

requirements) shall be used when working in the vicinity of overhead power

lines. Where a safety observer is used, workers shall comply with the

following conditions:

o the safety observer should not be required to carry out any other

duty during the time they are carrying out duties as a safety

observer

o be competent in observing, warning and communicating

effectively (this may mean the use of electronic communications

e.g. a two-way radio)

o be aware of the electrical hazards and risks associated with the

work

o be able to warn about the approach to electrical apparatus

o be able to stop the work if necessary

o not be expected to observe more than one crane or plant at a

time

o not be located in an elevated work platform

o the safety observer must mark the border of the exclusion zone with

suitable markers e.g. red warning tapes or paint, which can easily

be viewed by the machine operator and any other workers

involved in the work

2.7.4 Risk Assessment when working near overhead electric lines

A risk assessment shall be completed for all work occurring near overhead

electric lines. This shall include:

o the location, height, arrangement and visibility of overhead electric

lines and supporting structures like poles, towers and stay wires

o the voltage of electric lines and exposed energised parts and

whether electric lines and parts are insulated or bare

o possible sway or sag of the electric line caused by wind or

temperature changes

o environmental conditions like storm activity, heavy rain or lightning

in the area

o site conditions including:

prevailing or unexpected winds their strength and direction




the terrain and possibility of unexpected ground surface

movement under plant

vehicular traffic, pedestrians or livestock that could interfere

with the work

o the type of plant and machinery required including

their design envelope, inherent stability and that of a

suspended load

their dimensions and their operating characteristics, ease of

manoeuvrability and conductivity if they are earthed

the minimum clearance distances from the closest part of

the plant to electric lines

the possibility they may become energised by proximity to

high voltage lines

o nature, size and shape of loads to be moved

load stability, dimensions and surface area facing the wind

A single operator shall direct, and a single operator shall

control all lifting operations. These functions shall be

separate individuals in cases where a licensed dagger is

required.

whether loads are conductive - all materials should be

treated as such unless a competent person can confirm

otherwise

non-conductive material may become conductive when in

contact with high voltage material

how loads are secured and if any part of the load may

move and enter within an unsafe distance

whether loads being carried above electric lines may

accidentally fall onto them e.g. when moving a swimming

pool from the street over energized electric lines into the

yard of a home

o the type of work activities required and the frequency of the work

tasks

o qualifications, competency, skill and experience of the people

doing the work

o setting up and packing up processes

o work practices and procedures.

2.7.5 Risk Controls when working near overhead electric lines

The risk of working near overhead electrical lines shall be eliminated so far as is

reasonably practicable. This may be done by contacting the relevant electricity

supply authority to request that the powerlines be de-energised or re-routed

away from the work area. Verification of any de-energisation shall be

demonstrated and confirmation received in writing from the relevant electricity

supply authority before commencing work.




Where elimination of the risk is not reasonably practicable, the risk shall be

minimised so far as is reasonably practicable. In most cases a combination of

controls at multiple levels of the hierarchy of control will be required to reduce the

risk to as low as reasonably practicable.

If further guidance is required to select appropriate risk controls, consultation

should occur with the relevant electricity supply authority before

commencement of work.

The following are potential controls when working near overhead electrical lines

to be considered:

Hierarchy of Control

In order of preference if elimination of the hazard is not practicable Substitution controls:

Using alternative plant which cannot enter an exclusion zone.

Using non-conductive tools designed to reduce the possibility of direct contact with the overhead electric line.

Using ultrasonic measuring devices instead of the mechanical types for measuring heights of overhead lines.

Isolation Controls:

Erecting a physical barrier, made from non-conductive material, to prevent a person, anything held by a person, or any part of an item of plant or equipment entering an exclusion zone.

Engineering Controls:

Limiting movement of plant with mechanical stops.

Fitting plant with programmable zone limiting devices.

Mechanically limiting slew speed of a crane to slow using electrically insulated plant and equipment.

Fitting vehicles/plant with earthing devices as required by legislation or the electricity supply authority.

Administrative Controls:

Fitting proximity sensors and a warning device to plant to alert operators when they are about to enter exclusion zones.

Making hazard more visible by using warning signs to indicate the location of overhead electric lines and defined work areas.

Arranging for the electricity supply authority to fit overhead lines with approved visual indicators such as tiger tails.

Managing and supervising the work to ensure safe work practices, including compliance with JSA/SWMS and exclusion zones,

Personal Protective Equipment (PPE):

Insulating gloves.

Electrical non-conductive safety footwear

Safety helmets.

Standing on an insulating mat.

Minimum category 1 PPE.




2.8 Working near underground electrical services

The information listed below, relating to the location of underground electrical

services, shall be obtained before commencing excavation or trenching activities

or before an object is driven onto the ground to a depth of 300mm or greater in

accordance with the requirements of the Ground Disturbance/ Surface

Penetration Activities Procedure (PRO-1030).

2.8.1 Information Requirements

The following information relating to underground services shall be obtained prior

to ground disturbance including but not limited to: excavation, trenching or an

object being driven into the ground to a depth of 300mm or greater:

whether underground electrical services exist in the area

the type of electrical services

the exact location of the electrical services, including the depth of the

services

isolation points for the electrical services (where required / available)

if the electrical services will be de-energised during the work

any specific restrictions to be followed during the work.

2.8.2 On-site location/ confirmation

Once the review of all available plans and ‘Dial Before You Dig’ information has

been completed, a site inspection shall be undertaken to confirm the location of

electrical services and to clearly mark the location of the services before any

ground disturbance.

When undertaking a site inspection to confirm the location of underground

electrical services, the following must be considered:

the location of the electrical services in relation to known, fixed assets (i.e.

buildings, pits, etc.)

evidence of previous excavations (sunken areas, different soil type, cuts to

paths and roadways, etc.)

the knowledge of workers that may have information of the plant or

workplace.

Where underground electrical services may be located in the vicinity of the

Ground disturbance, non-destructive methods shall be used to positively confirm

the location of the electrical services. Non-destructive methods to be used for

positively identifying underground electrical services include:

vacuum excavation

potholing

hand digging




insulated prodder

cable locator

ground radar

Once the location of electrical services is confirmed, their location shall be

marked on the surface of the ground with high visibility marking paint. In

accordance with AS/NZS 2648.1:1995 Underground Marking Tape – Non-

detectable tape, orange paint shall be used for marking the location of

underground electrical services.

Different colours to those listed above shall be used for marking the extent of the

excavation or trench or for any exclusion zone established within the work area.

2.8.3 Distribution of Information

All information related to underground electrical services located in the area

where the ground disturbance occurs shall be:

made available to any worker, principal contractor and sub-contractor

made available for inspection during the work as required by the Work

Health and Safety Act and Regulation

retained until the ground disturbance work is completed or, if there is a

notifiable incident relating to the ground disturbance work, for at least two

years after the incident occurs.

2.8.4 Updating underground service Information

Following the completion of ground disturbance work, the supervisor of the works

shall organise for relevant site drawings and underground service maps to be

updated with accurate information for the services identified.

2.8.5 If damage to underground electrical services occurs

If any damage occurs to underground services during ground disturbance work

, the following actions must be undertaken:

make sure workers are safe (where contact is made with electrical services,

plant operators should remain in the cabin of the plant until the area is

deemed safe)

undertake isolations where required / where practicable

notify UC facilities management

lodge Incident within the UC Incident reporting system




Any incidents and emergencies involving damage to underground electrical

services shall be escalated in accordance with the UC Emergency Response

Procedure.

2.9 Electrical Safety Switches

2.9.1 General Requirements for Safety Switches

All portable electrical equipment used at UC shall be connected to either a fixed

or portable safety switch. All electrical safety switches installed or used at UC shall

comply with the requirements of AS/NZS 3190 Approval and test specification –

Residual current devices (current-operated earth leakage devices) when tested.

All safety switches, other than portable safety switches, at UC must:

be tested by a competent person under AS/NZS 3760 In-service Safety

Inspection and Testing of Electrical Equipment immediately after it is

connected and

be tested under, and at the intervals stated in AS/NZS 3760 In-service Safety

Inspection and Testing of Electrical Equipment.

All portable safety switches at UC workplaces must:

be tested by pushing the test button on the safety switch immediately after

it is connected; and

be tested in accordance with, and at the intervals stated in, AS/NZS 3760 In-

service Safety Inspection and Testing of Electrical Equipment.

If a safety switch is not working properly, the following actions shall be

implemented:

the safety switch shall be immediately disconnected or isolated and

removed from use and tagged with a ‘Out of Service’ tag (and lock where

practical)

the works supervisor notified immediately

the ‘Out of Service’ tag (and lock where used) is only to be removed and

the equipment returned to service when the safety switch is repaired or

replaced and tested and tagged by an electrical worker.




2.10 Electrical testing and tagging

Users of electrical equipment are responsible for confirming the equipment is

tested and tagged before the equipment is used. Any equipment that has not

been tested or is out of test date shall not be used until it has been successfully

tested and tagged.

All electrical equipment and RCD’s shall be tested and tagged. This includes the

operational testing (manual) and the performance testing (electrical) of all RCDs.

Specific requirements for inspection, testing and tagging of electrical equipment

at UC are included in Appendix C of this procedure.

The inspection, test and tag process shall be undertaken in accordance with the

requirements of AS/NZS 3760 In-service Safety Inspection and Testing of Electrical

Equipment.

In accordance with AS/NZS 3760: In-service safety inspection and testing of

electrical equipment, requirements for testing and tagging do not apply to

electrical equipment (such as suspended light fittings), installed at a height of

2.5m or greater above the ground, floor or platform, where there is not a

reasonable chance of a person touching the equipment and, at the same time,

coming into contact with earth or a conducting medium which may be in

electrical contact with earth or through which a circuit may be completed to

earth.

In addition, the standard allows that, any new equipment procured by UC may

initially be tagged with a “new to service” tag after the equipment has been

inspected to check it is not damaged. This tag shall include:

wording “new to service”

date of entry to service

date when next test is due

statement “this appliance has not been tested in accordance with AS/NZS

3760”

UC equipment will require testing and tagging by a licensed electrical worker five

years after the date of entry to service.

2.11 Electrical incident reporting

An electrical incident can include:

Serious Electrical Incident

Dangerous Electrical Event

Electric Shock.

Any form of near miss incident




A worker shall report all electrical incidents to the line supervisor and via the UC

Incident reporting process outlined within the Contractor Incident Notification/

Investigation (PRO-1110). Any worker who has come into contact with electricity

must undergo a medical examination as soon as practical after the incident. The

scene of any electrical incidents shall not be interfered with apart from making

the area electrically safe. Any electrical equipment involved in the incident or

event shall be securely stored for the purposes of investigation.

Investigation of electrical incidents and incident response is performed in

accordance with Contractor Incident Notification/ Investigation (PRO-1110) and

is to be classified as a significant Incident; this includes any near miss.

2.12 Cardio Pulmonary Resuscitation & Low Voltage Rescue

All electrical workers performing electrical work at UC are required to achieve

and maintain competency in Cardio Pulmonary Resuscitation (CPR) every 12

months. All workers trained as safety observers for the performance of Low

Voltage Rescue (LVR) are required to achieve and maintain competency in

Cardio Pulmonary Resuscitation (CPR) every 12 months.

Electrical workers shall be required to have received additional training in

performance of specialised rescue associated with the type for which they have

been engaged e.g. rescue from a pole top, rescue from a confined space.




3 DEFINITIONS

Competent Person

A person who has acquired through training, qualification or experience (or combination of these)

the knowledge and skills enabling that person to safely perform a specific task. The allowable tasks

performed by a competent person shall be restricted to the area of specialty associated with the

licence/ qualification held.

Competent person (electrical)

for electrical work on energised electrical equipment or energised electrical installations (other

than testing referred to in regulations 150 and 165), a licensed or registered electrician or any other

person permitted to carry out or supervise electrical work under relevant State or territory legislation

(e.g. electrical engineer, electrical apprentice)An electrical worker who has acquired, through

training, qualifications, experience or a combination of these, the knowledge and skills enabling

the person to perform the task.

Cat 0 – 4 PPE

o Category 0: One layer of untreated natural fibre clothing; no minimum PPE Arc Rating

(cal/cm²)

o Category 1: Fire-resistant shirt and fire-resistant pants, level 1 face shield, leather gloves -

one total layer. Minimum PPE Arc Rating: 4 cal/cm²

o Category 2: Category 1 plus cotton underwear; two total layers. Minimum PPE Arc Rating:

8 cal/cm².

o Category 3: Category 2 plus fire-resistant coverall; three total layers. Minimum PPE Arc

Rating: 25 cal/cm².

o Category 4: Category 2 plus multilayer flash suit; four total layers. Minimum PPE Arc Rating:

40 cal/cm².

Cathodic Protection Systems

Cathodic protection is a technique to control the corrosion of a metal surface by making that

surface the cathode of an electrochemical cell.

Cathodic protection can be achieved in two ways:

o by the use of galvanic (sacrificial) anodes (passive), or

o by ‘impressed’ current (active).

Earths

Electrically connected to the general mass of earth by a Conductor to ensure and maintain the

effective dissipation of electrical energy.

Electrical equipment




Any apparatus, appliance, cable, conductor, fitting, insulator, material, meter or wire that:

o is used for controlling, generating, supplying, transforming or transmitting electricity at a

voltage

o greater than extra-low voltage is operated by electricity at a voltage greater than extra-

low voltage

o is part of an electrical installation located in an area in which the atmosphere presents a

risk to health and safety from fire or explosion, or

o is, or is part of, an active impressed current cathodic protection system within the meaning

of AS 2832.1:2004.

Electricity Supply Authority

A person or body engaged in the distribution of electricity to the public or the transmission or

supply, directly or indirectly, to the public. An electricity supply authority may also be known as a

network operator, a network service provider or an electricity entity.

Electrical Isolation

Means disconnected from all possible sources of electrical supply and rendered incapable of

being made live without premeditated and deliberate operation.

Electrical Worker

a licensed or registered electrician or any other person permitted to carry out or supervise electrical

work under relevant State or territory legislation

Job Safety and Analysis (JSA):

A step-by-step method of identifying hazards, evaluating the risk, implementing control measures

and providing a safe system of work.

Residual current device (RCD)

means a device intended to isolate supply to protected circuits, socket outlets or electrical

equipment in the event of a current flow to earth that exceeds a predetermined value. The RCD

may be fixed or portable.

Safety Observer

In relation to the observing of the performance of electrical work, means a person:

o who is competent to help with the electrical work and to implement control measures in

an emergency; and

o who is competent to rescue the person performing the electrical work and to provide

resuscitation;

o whose competence has been assessed in the last 12 months.

Safety Switch

A residual current device (RCD), type 1 or type 2 safety switches.

Shall

Indicates that a statement is mandatory

Switching




Any action that alters connections in an electrical circuit or any action specified on a High Voltage

Switching Sheet.

Voltage

o Extra low voltage means voltage that does not exceed 50 volts alternating current (50 V

a.c.) or 120 volts ripple-free direct current (120 V ripple-free d.c.).

o Low voltage means voltage that exceeds extra-low voltage and does not exceed 1000

volts lternating current (1000 V a.c.) or 1500 volts direct current (1500 V d.c.).

o High voltage means voltage that exceeds low voltage.




4 ACCOUNTABILITIES

Role Responsibilities

General Managers Ensure compliance with the requirements of this

procedure within their Department or school

Maintain and support a risk management culture by

endorsing the risk management requirements within this

procedure

Ensure adequate resources are provided to meet the

requirements as defined within this procedure

Facilities Management Manager Ensure systems are established and maintained to

support the requirements of this procedure

Department Managers Ensure systems are established and maintained to support

and comply with the requirements of this procedure within

their department

Ensure adequate resources are provided to meet the

Departments requirements as identified in this procedure

Ensure that all new items of plant, equipment or systems

shall be designed and installed as per the requirments of

this procedure.

Ensure Training programs applicable to the task being

peformed on the job are recorded appropriately in

Training Plans / Role Requirements

Ensure appropriate Training programs exist applicable to

the tasks being performed

Safety Manager, Officers or

Advisors

Support the Department Manager to achieve the

requirements of this procedure

Support Department personnel and contractors to meet

the requirements of this procedure

Facilitate and/or participate in any risk management

activities associated with work at heights

Ensure that observations are conducted on a random

basis to ensure compliance with this procedure.

Workplace Supervisor,

Contractors performing work at

heights and any other Work at

Heights competent persons.

Ensure the requirements of this procedure are met during

any work activities.

Report any potential new risks or hazards that are

identified during work activities

Participate in risk management activities as and when

requested

When a electrical work is required, ensure a risk

assessment is completed in accordance with POL-3203

Risk Management Tools

Ensure this risk assessment addresses all aspects of the

electrical work occurring




Ensure a JSA, SWMS, electrical isolation and test certificate

and any required Permits to Work are completed and

have been authorized by UC prior to commencing any

work.

Perform prestarts and safety checks on any tools and

equipment’s being used as part of the electrical work.

On completion of electrical work, ensure that the work

area is secure, safe and clear of residual equipment and

material. Sign the electrical isolation and test certificate to

acknowledge that this is the case.




5 REFERENCES

POL-1000 Permit to Work System - Guideline

PRO-1060 Isolation Lockout and Tagging

PRO-1080 Barriers and Barricades

AS/NZS 3190 Approval and test specification – Residual current devices (current-operated earth

leakage devices)

AS 2832:3 Cathodic Protection of Metals – Immersed Structures

AS 2832.4 Cathodic Protection of Metals – Internal Surfaces

AS 2790 Electrical Generating Sets – Transportable (up to 25 kW)

AS 3000 Electrical installations (also known as wiring rules)

AS 3010 Electrical Installations – Generating Sets

AS/NZS 3012 Electrical Installations – Construction and Demolition Sites

AS/NZS 3760 In-service safety inspection and testing of electrical equipment

AS 2225 Insulating Gloves for Electrical Purposes

AS/NZS 2978 Insulating Mats for Electrical Purposes

AS/NZS 4836 Safe working on low voltage installations.

AS/NZS 1020 The Control of Undesirable Static Electricity

SafeWork Australia – Working in Vicinity of overhead and underground electric lines Guidance

material – 2016 (http://www.safeworkaustralia.gov.au/sites/swa/about/publications/pages/guidance-overhead-

underground-electric-lines)

Work Health and Safety Act 2011

Work Health and Safety Regulation 2011

http://www.safeworkaustralia.gov.au/sites/swa/about/publications/pages/guidance-overhead-underground-electric-lines

http://www.safeworkaustralia.gov.au/sites/swa/about/publications/pages/guidance-overhead-underground-electric-lines




APPENDIX

Appendix 1 Example of Simple Isolation process steps

Appendix 2 Inch and Test process requirements

Appendix 3 Break in Work process requirements

Appendix 4 Examples of acceptable forms of Electrical Isolation




APPENDIX 1 - EXAMPLE OF SIMPLE ISOLATION PROCESS STEPS

1. Plan the work activity

The worker assigned the work activity must undertake planning to ensure that:

• all risk control requirements to perform the work activity have been identified and will be followed

• all impacts of the isolation of the plant are understood

• all workers and plant impacted by the isolation are identified

• appropriate coordination is undertaken to ensure operational impacts are managed

• all tools and equipment are available to complete the work activity (including all required isolation equipment).

2. Identify energy sources

The worker performing the work activity must personally identify:

• all sources of energy feeding or leaving the plant

• all sources of energy contained within the plant

• any part of the plant or contents of the plant that is likely to move.

Simple isolations will generally only have a single energy source feeding the plant being isolated, however all energy sources must be verified by the worker performing the work activity.

3. Communicate

Before isolating an item of plant, the worker performing the isolation must contact the access officer and any other workers at the work location who may be impacted by the work activity to confirm that the isolation can proceed as planned.

4. Isolate energy sources and dissipate stored energy

The worker performing the work activity must make an item of plant safe by:

• stopping the plant in a controlled manner

• isolating all sources of energy feeding or leaving the plant

• restraining the plant, materials and any other sources of energy associated with the plant that cannot be dissipated

• dissipating any source of energy contained within the plant.

The isolation point/s or control point must be secured with an isolation lock and isolation tag.




Where required, alternative control measures may include the use of additional lockout devices such as a small plug lockout device, hasp, etc. may need to be used in conjunction with a isolation lock and tag to secure the isolation point.

SCADA, control circuits or emergency stops must not be used as methods of isolation.

5. Verify the effectiveness of the isolation

The worker performing the work activity must verify the effectiveness of the isolation before commencing work.

Verification of simple isolations is performed by visually checking the local disconnection of leads, hoses, by confirming the local isolator is in the off position or by checking the ignition of the item of plant.

Workers must also confirm that any energy stored in the plant is either:

• dissipated

The process used to verify an isolation, and the outcomes of the verification process must be recorded in the JSA/SWMS for the work activity.

Note - re-testing should occur as necessary whilst electrical work is being undertaken if for example the worker carrying out the work temporarily leaves the immediate area, checks and tests must be carried out on their return to ensure that the equipment being worked on is still isolated to safeguard against inadvertent re-energisation.

6. Work on the plant

Following the verification of a simple isolation, the work activity may be performed in accordance with the JSA/SWMS.

Where the work activity cannot be completed in a single shift, the worker performing the work activity must:

• notify the relevant works supervisor that the item of plant is out of service

• attach a yellow out of service lock and tag to the isolation points or control point for the item of plant to confirm that the plant is not safe to operate.

7. Communicate

Before reinstating an item of plant, the worker performing the work activity must contact the works supervisor and any other workers at the work location who will be impacted by the de-isolation to confirm that the item of plant can be reinstated as planned.

8. Reinstate plant

The worker performing the work activity must reinstate an item of plant by:

• removing any restraints applied to the plant

• de-isolating any sources of energy to the plant




• confirming the plant is available to return to service

• starting the plant in a controlled manner (where required / permitted).

Where an item of plant is unable to be returned to service the out of service process detailed in Appendix F of this procedure must be used.

9. Return isolation equipment

Workers must ensure that all isolation equipment is accounted for and returned to its owner or storage location at the completion of the work activity.




APPENDIX 2 – INCH AND TEST PROCESS REQUIREMENTS

The following process is used to temporarily remove isolations from an item of plant to allow workers to test the operation of the plant:

1. Isolation instruction

The isolation officer must complete sections 5, 6 and 7 of the Electrical Isolation and Test Certificate (FRM- 1071) to describe the steps that will be performed during the inch and test process.

2. Communicate

Before commencing an inch and test process, the work supervisor must liaise with Facilities Management to confirm that the inch and test process can proceed as planned.

3. Workers remove personal locks and tags

All workers (including the work supervisor) must remove personal locks and personal danger tags.

4. Perform inch and test

The person in charge of the isolations removes the keys to the isolation locks and de-isolates the plant.

Once the plant has been de-isolated, the work supervisor manages the inch and test process.

Once the inch and test process is complete, the person in charge of the isolations re-instates all isolations and places all keys to the isolation locks back onto any lock board or equivalent being used.

5. Complete inch and test (continue work activity)

Once the inch and test process is complete, all isolations have been reinstated and isolation locks have been affixed to isolation points, all workers (including the work coordinator) must re-attach their blue personal locks and personal danger tags to the lock board.

Once workers have attached their blue personal locks and personal danger tags to the lock board they may resume the work activity in accordance with the JSA/SWMS.

6. Complete inch and test (reinstate plant)

If the inch and test process was successful and the plant is ready to be returned to service, the isolation officer will remove any remaining isolations and return the plant to service in accordance with the Electrical Isolation and Test Certificate (FRM-1071).




APPENDIX 3 – BREAK IN WORK PROCESS

The following process must be used where a work activity cannot be completed in a single shift and the plant being worked on will remain isolated until the work activity can be completed:

1. Leave isolations in place

All isolation points must remain isolated and locked.

2. Workers remove personal locks and tags

All workers remove their personal locks and personal danger tags prior to leaving site .

3. Attach out of service lock and tag

Once the works supervisor has confirmed all workers have left the work area and have removed their personal locks and personal danger tags (except for the supervisor or electrician performing the out of service lock-off is to remain locked on), the supervisor or electrician performing the out of service lock off is to ensure that a yellow out of service lock and out of service tag is attached to each lock point.

The work supervisor’s details, the reason for attaching the out of service lock and tag, and who holds the out of service lock keys is to be recorded on all yellow out of service tags placed.

The person who performed the out of service lock-off then removes their personal lock and personal danger tags.

4. Out of service lock key

The work supervisor must attach an information tag to each out of service key to record their contact details and to identify the plant that is out of service key relates to.

The work supervisor is to hand these out of service keys to the UC Campus Services Office until the work resumes.

5. Work activity documentation

Documentation associated with the work activity (i.e. JSA/SWMS, Electrical Isolation and Test Certificate , High-Risk Work Permits) must remain at the location of the work (preferably displayed on a lock board), provided they can be secured and protected from the environment.

Where documentation cannot be secured and protected from the environment, the work supervisor is to provide a current copy to the UC project officer and UC Campus Services Officer for reference if an emergency should arise.

This same documentation must be reviewed by work supervisor and work team prior to recommencing the work activity.




6. Removal of out of service lock

An out of service lock may only be removed by an authorised isolator for the site where the out of service plant is located.

7. Assessing for change

Before resuming a work activity after a break in work, the work supervisor must inspect the work site to confirm if any conditions have changed during the break in work that may impact on the completion of work (e.g. rainfall, changed operating conditions, other work activities occurring in the vicinity, etc.).

Where required, additional risk controls must be implemented to ensure that the work activity can be safely restarted. The JSA/SWMS and Electrical Isolation and Test Certificate for the work activity must be reviewed and updated to reflect any additional risk controls implemented.

8. Resume work activity

After the work supervisor has confirmed that the work activity can resume, the work supervisor affixes their personal lock and personal danger tag to isolation points and out of service lock and out of service tags can be removed.

Once the work coordinator has affixed their personal lock and personal danger tag, all other workers involved in the work activity may affix their blue personal locks and personal danger tags via a group isolation hasp or similar.

Once workers have affixed their personal locks and personal danger tags the work activity may resume in accordance with the JSA/SWMS and Electrical Isolation and Lock Certificate.




APPENDIX 4 - EXAMPLES OF ACCEPTABLE FORMS OF ISOLATION

Cable devices

Cable devices are used to secure valves and other devices that cannot be secured using locks or shrouds.

Small plug lockout device

A small plug lockout device is used to secure a small plug that has been removed from a GPO or similar to allow work to be performed on an item of plant.




Miniature circuit breaker lockout device

A miniature circuit breaker lockout device is used to secure circuit breakers to allow work to be performed on an item of plant. Below are a number of different types of lockout devices.

Miniature circuit breaker lockout device (standard toggles)

Miniature circuit breaker lockout device (pins inward)

Documents

Electrical Safety Management - canberra.edu.au · the electrical installation or equipment has been isolated, with locks and ... Ensure a JSA, SWMS, electrical isolation and test