4.7 High Voltage Switching Practice

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MID WEST PORTS AUTHORITY
4.7 SWP HIGH VOLTAGE SWITCHING
4.7 SWP HIGH VOLTAGE SWITCHING OPERATIONS
1.
PURPOSE
The purpose of the High Voltage (HV) switching safe work practice is to ensure:
 all electrical contractors and MWPA electrical personnel are informed of the standard
methods to be employed in High Voltage (HV) Switching within the Mid West Ports
Authority (MWPA);
 uniformity of HV switching practice; and
 all HV Switching work undertaken is undertaken in safe working environments.
The Electricity Regulations 1947 require that only properly trained and authorised persons
be permitted to carry out work upon high voltage electrical apparatus, which is capable of
being energised.
This procedure outlines the requirements for such work and authorisations required in
respect to electrical plant owned or operated by the MWPA.
This procedure complies with AS/NZ 3000:2007, WA Electrical requirements, Electrical
Regulations 1947 and AS 2467:2008, Electrical Safety Instructions of the Office of Energy of
Western Australia, the Electrical Safety Rules contained in AS 2467-2008 (Section 2),
Western Australian Mines Safety and Inspection Regulations 1995 (5.7 and 5.18).
2.
HEIRACHY OF CONTROL
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MID WEST PORTS AUTHORITY
3.0
DEFINITIONS
3.1
DEFINED PERSONNEL
4.7 SWP HIGH VOLTAGE SWITCHING
Authorising Officer: Minimum qualifications required:
 A degree in electrical engineering trained as a professional power electrical engineer
with at least 5 years experience with HV Electrical Apparatus (design, operation,
construction).

Licensed electricians with at least 10 years experience with the operation and
construction of HV equipment, including not less that 5 years experience switching
HV Electrical Apparatus, (Electricity Regulation 1947 Part IX 301.)

Authorised in writing with documentation in Employees Records File /Mines
Inspection Book by Site Registered Mine Manager.
Authorised Person: Issuing Officers, Switching Programme Checkers and Testers in
Charge shall be Authorised Persons.
Personnel to be authorised in writing, plus record / copies of certificates documentation to be
annotated in Employees Records File / Mines Inspection Book by Site Registered Mine
Manager.
Competent Person: A person who is trained with in-date certified and recorded
qualifications (must have completed and be deemed competent by independent Training
Organisation) and capable of carrying out safely all aspects of the High Voltage work
allotted to that person, by an Authorised Person.
Issuing Officer: A suitably qualified electrical person authorised by the Authorising Officer,
with defined limits to:
 Prepare switching programmes.
 Issue and cancel electrical access permits and personally perform or direct activities
on the associated switching programmes.
 Issue and cancel electrical sanction to test permits.
 Advise Recipient In Charge of relevant Mid West Ports Authority (MWPA) Permits
that will be required to carry out works before commencement of work.
Recipient: Any member of a working party working under the conditions of an electrical
access permit, or a remote electrical access permit authorisation.
Recipient in Charge: The Competent Person to whom an Issuing Officer has issued the
electrical access permit for a specific job on a particular date and time. Recipient In
Charge is to ensure he /she has all applicable MWPA (including BHF permits if applicable)
permits to carry out the task(s).
Safety Observer: A Recipient whose sole duty is to ensure all personnel not involved in the
works do not enter the restricted work area when work is being carried out adjacent to live
electrical apparatus.
Switching Programme Checker: A suitably qualified electrical person authorised by the
Authorising Officer within defined limits to check and confirm switching programmes
prepared by an Issuing Officer.
Tester: Any Competent Person who is a member of a testing party operating under the
conditions of an electrical sanction to test permit, or remote sanction to test permit
authorisation.
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MID WEST PORTS AUTHORITY
4.7 SWP HIGH VOLTAGE SWITCHING
Tester In Charge: Shall be an electrical engineer, electrical engineering associate or
electrical supervisor authorised by the Authorising Officer to carry out, within defined limits,
the implementation and supervision of testing allowed by an electrical sanction to test
permit.
3.2
DEFINED TERMS
3.2.1
Alive, Live or Energised
Electrical apparatus may be termed alive, live or energised where a potential
difference exists between such electrical apparatus and earth.
All electrical equipment must be deemed Live at all times until isolations have been
proven.
3.2.2
Approved Earthing Equipment
Approved earthing equipment shall mean the equipment, including the 3 clamps,
short circuiting and earthing drop cables constituting an earth set, specifically
intended for connection to isolated electrical apparatus so as to ensure that
conductors are effectively earthed. The above applies to Aerial conductors other
approved methods for underground installations include cable spiking or the opening
of applicable High Voltage Circuit Breakers and switching / locking into the Earth
position. Locks applied can only be HV designated locks not personal locks.
3.2.3
Circuit Breaker
Circuit breaker shall mean an item of electrical apparatus designed to energise
and de-energise an electrical system under conditions of load and/or fault currents.
This means should a fault occur during the switching / transition time the structure of
the circuit breaker should contain any arcing / blast within the circuit breaker
enclosure.
3.2.4
Conductors
Conductors shall mean any conductor forming part of an electrical apparatus,
which, under normal operating condition, is live. (The neutral connections of the
electrical apparatus shall also be included).
3.2.5
Dead
Dead shall mean isolated electrical apparatus which is earthed.
3.2.6
De-Energised
De-energised shall mean electrical apparatus which has been disconnected from
all sources of supply but is not necessarily dead.
3.2.7
Discharged
Discharged shall mean electrical apparatus which has been electrically connected
to earth to remove any residual electrical energy.
3.2.8
Earthed
Earthed shall mean electrical apparatus, which has been electrically connected to
earth effectively, ensuring an immediate and continuous discharge of electrical
energy.
3.2.9
Earth Switch
Earth switch shall mean an item of electrical equipment designed to connect, by
switching, isolated electrical apparatus to earth.
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MID WEST PORTS AUTHORITY
4.7 SWP HIGH VOLTAGE SWITCHING
3.2.10 Electrical Apparatus
Electrical apparatus shall mean any electrical equipment, including overhead
conductors, cables, transformers, switchgear and electric motors, the conductors of
which can be mad, or are, live.
3.2.11 High Voltage
High Voltage shall mean a voltage in excess of 1000 Volts A.C. (AS/NZS
3000.2007) (1.4.98©).
3.2.12 Isolated Electrical Apparatus
Isolated electrical apparatus shall mean apparatus which has been disconnected
from all possible sources of supply by operation a switch or isolator, removal of
fuses, links and/or connections and has been rendered incapable of being made live
without premeditated and deliberate manual operation.
Isolated Electrical Apparatus is not necessarily dead.
3.2.13 Isolator
Isolator shall mean an item of electrical equipment designed to disconnect a circuit
already de-energised, or to turn On or Off a circuit so lightly loaded that negligible
current (i.e. less than 0.5A) would be made or broken.
In the Off position the isolating distance is in accordance with specified requirements.
3.2.14 Off
Off shall mean any operation of a circuit breaker, switch, or isolator, or the
removal of approved earthing equipment, so as to disconnect the associated
electrical circuit.
3.2.15 On
On shall mean any operation of a circuit breaker, switch, or isolator, or the
application of approved earthing equipment, so as to connect the associated
electrical circuit.
3.2.16 Switch
Switch shall mean an item of electrical equipment designed to turn a circuit On
under fault or full load conditions or Off under full load conditions.
3.2.17 Switching Operation
Switching operation shall mean any action involved in making electrical apparatus
dead, or in making electrical apparatus (that has been dead), live and carried out
in accordance with prepared switching programme.
An action by an operator to stop or start plant is not a switching operation as
defined by this Manual.
3.2.18 Relinquish
Hand over (back to) Issuing Officer.
3.3 PERMITS & AUTHORISATIONS
3.3.1
Associated permits and forms that may apply are available on the Mid West Ports
Authority intranet.
3.3.2
Authorised Person Certificate – Form F4.7f
The authorised person certificate is the form of authorisation given to suitably
qualified electrical personnel to perform the specific functions defined in this
procedure.
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MID WEST PORTS AUTHORITY
4.7 SWP HIGH VOLTAGE SWITCHING
3.3.3
Electrical Access Permit – Form F4.7a
The electrical access permit is the form of authorisation permitting access to and
work upon High Voltage electrical apparatus which is dead after being isolated
and earthed in accordance with prepared and checked switching programme.
3.3.4
Electrical Sanction to Test Permit – Form F4.7d
The electrical sanction to test permit is the form of authorisation, which allows
access to electrical apparatus for test purposes.
3.3.5
Switching Programme – Form F4.7j
The switching programme is the form used to prepare a chronological sequence of
events, which shall be followed to make specific electrical apparatus:
a) Dead prior to work commencing
Or
b) Energised following completion of work.
3.3.6
Equipment Status – Form F4.7g
The equipment status form is the form used to list the condition/status of electrical
apparatus prior to the preparation and the implementation of a switching
programme.
4
GENERAL CONDITIONS
4.1
Staff Authorisation and Training
4.1.1
Prior to being presented with an Authorised Person Certificate by the Authorising
Officer all staff requiring authorisation shall attend and pass an approved High
Voltage Switching Operator’s Training Course (5 Days initial course with an external
approved Registered Training Organisation - RTO). Additionally a minimum of 3
under training switching programs are to be assessed by an approved Authorised
Person to confirm site knowledge before being nominated to Authorising Officer)
4.1.2
All Authorised Persons shall attend and pass an approved High Voltage Switching
Operator’s Course at least every 2 years. This is the current Western Australian
requirement to meet Western Power / Horizon Power and Energy Safety standards.
4.1.3
All Competent Persons shall attend and pass an approved High Voltage Switching
Operator’s Training Course at lease every 2 years. As per 5.1.2 this is to ensure all
Competent Persons remain in date with any change to regulations.
4.2
First Considerations
4.2.1
All electrical apparatus shall be regarded as alive until proved dead.
4.2.2
Unnecessary approach to live conductors or contact with parts not confirmed as
dead shall be avoided at all times.
4.2.3
No person shall touch any part of an insulator, which is supporting a live High
Voltage conductor.
4.2.4
Work shall not be performed on a live High Voltage conductor.
(For work of an operational nature such as turning On or Off, circuit breakers,
switches, isolators or similar control devices and the removal or replacement of
drop our fuses using Live Line Working Sticks shall not be regarded as work on Live
electrical apparatus).
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MID WEST PORTS AUTHORITY
4.7 SWP HIGH VOLTAGE SWITCHING
4.2.5
Each person shall be assured of their own safety and the safety of others by
following the approved procedures for ensuring that conductors are dead and an
electrical access permit is issued before work commences on any High Voltage
electrical apparatus.
4.2.6
All switching operations shall be carried out in accordance with a prepared and
checked switching programme.
4.2.7
A Switching Programme shall be prepared for at least the following circumstances:
i)
Where access is required, via an Electrical Access Permit, to allow
maintenance / repair work on High Voltage equipment.
ii)
Where High Voltage equipment, fed via a single source of supply, is to be
earthed for the purpose of making that equipment dead, but does not
necessarily apply where access is only required to the associated LV
equipment.
iii)
Where the complexity of the installation dictates that the sequence of events
must be carefully planned to prevent mistakes which may jeopardise the
security of the installation and safety of personnel or equipment.
iv)
Where new plant and electrical apparatus is being commissioned.
4.3
PERMISSION TO WORK
4.3.1
Permission to work upon any High Voltage electrical apparatus shall be obtained
by completing “HV Electrical Apparatus Switching Request” before any work is
commenced.
Permission to work shall be authorised by the duly completed electrical access
permit or electrical sanction to test permit. All person involved in the area of work
shall be included in the authorisation.
4.3.2
The electrical access permit or electrical sanction to test permit shall include
details of location and a clear description of the electrical apparatus, which is the
subject of the necessary work. The precautions taken, to ensure that such work can
be safely performed, shall be explained to all recipients.
4.3.3
An electrical access permit and an electrical sanction to test permit shall not be
an issue for the same electrical apparatus simultaneously.
4.4
DEFINITION OF WORK AREAS NEAR LIVE ELECTRICAL APPARATUS
Before approaching or commencing work on, or adjacent to, any High Voltage electrical
apparatus the following shall be observed:
4.5

The Recipient in Charge or Tester in Charge shall ensure that all Recipients
forming the working party are advised of the limits of the safe working area and of
any danger points.

Each Recipient shall be satisfied concerning the precautions taken, the location of
earths, the points of supply and the proximity of any adjacent live conductors.

Where work is to be carried out on electrical apparatus in an area adjacent to other
electrical apparatus which is either live or capable of being made live, the Recipient
in Charge or Tester in Charge shall ensure that, wherever practical, the safe
working area is defined by the erection of non conductive barriers, together with
warning signs indicating the area and nature of the danger.
PERSONNEL AND EQUIPMENT NEAR LIVE HIGH VOLTAGE CONDUCTORS
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4.7 SWP HIGH VOLTAGE SWITCHING
Extreme care shall be exercised to avoid accidental contact between live conductors and
any tools, ladders or equipment being carried in the proximity of live conductors. When in
the vicinity of overhead conductors or overhead electrical apparatus ladders hall be
carried below shoulder height, preferably by two persons.
No employee shall come, or bring any conducting object within the distances given below, to
any exposed live High Voltage electrical apparatus. (Electricity Regulations, 1947, Part IX
316A. (3)(9)(b)).Note the below measurements refer to Overhead Conductors.
NOMINAL SYSTEM VOLTAGES
Above 1,000 Volts but not exceeding 33,000 Volts
Above 33,000 Volts but not exceeding 66,000 Volts
CLEARANCE DISTANCES
3 Metres
6 Metres
4.6
POSTING OF SAFETY OBSERVERS
4.6.1
Where it is considered that personnel or equipment may inadvertently contact live
electrical apparatus a Safety Observer shall be posted.
4.6.2
Safety Observers shall be appointed by the Recipient in Charge, who shall give
them specific instructions as to the nature of their task on each occasion that they are
posted.
4.7
NOTIFICATION OF ENTRY INTO HIGH VOLTAGE INSTALLATIONS
4.7.1
Issuing Officers shall notify the Electrical Supervisor responsible for the area and
issue a Vicinity Authority Permit prior to entry.
4.8
COMMUNICATIONS
4.8.1
Communications relating to the operation of, or access to, electrical apparatus shall
be clear and concise. Electrical apparatus shall be identified by the specific name
displayed on the equipment.
4.9
FAILURE OF SUPPLY AND REPORTING OF DEFECTS AND ACCIDENTS
4.9.1
A failure of the supply does not render electrical apparatus safe to be worked upon
until such time as the electrical apparatus is made dead and an electrical access
permit is issued in accordance with this Manual.
4.9.2
Personnel shall report to their immediate superiors all instances of hazards, due to
defective electrical apparatus or equipment, which may come to their attention.
Prompt action shall be implemented by the superior to rectify any defects, or to
isolate and earth the faulty equipment.
4.9.3
Electrical accidents involving High Voltage electrical apparatus and resulting in
injury to personnel shall be reported, notwithstanding any Regional requirements, to
the Authorising Officer who shall investigate the accident and submit a report to the
Office of Energy of Western Australia. In addition the Site Mine Manager must be
advised of the incident plus an electronic record entered into the Site HSEQ system
(STEMS).
4.10
UNDERGROUND CABLES
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4.7 SWP HIGH VOLTAGE SWITCHING
4.10.1 No work shall commence on an underground cable until it is positively identified.
Underground cables shall be positively identified in the presence of the Recipient in
Charge either by visual tracing, suitable test equipment or other conclusive means.
This includes where required – Excavation Permit.
4.10.2 Care should be taken to ensure that all cables, which retain a capacitive charge, are
correctly discharged by application of an earth switch or approved earthing
equipment.
4.11
LOCKING OF ELECTRICAL APPARATUS
4.11.1 All isolators which may be subjected to unauthorised or inadvertent operation under
condition of load shall be securely locked in the On position with an MWPA HV
padlock.
4.11.2 All earth switches, which may be subjected to unauthorised or inadvertent
operation, shall be securely locked in the Off position with an MWPA HV padlock.
4.11.3 A switch, circuit breaker or isolator, which is operated to the Off position for the
purpose of isolating electrical apparatus shall be securely locked in the Off position.
An earth switch which is operated to the On position for the purpose of earthing deenergised electrical apparatus shall be securely locked in the On position.
Individual Single key safety locks (MWPA HV locks) should be applied where such
facilities are provided.
4.11.4 Individual Single key safety locks (MWPA HV locks) shall be applied to prevent
unauthorised operation of any switching control mechanism. The keys shall remain
under the control of the Issuing Officer, Recipient-in-Charge, or Tester-in-Charge
for the period of issue of the electrical access permit or the electrical sanction to
test permit.
4.11.5 The Recipient in Charge or Tester-in-Charge may apply an additional individual
single key safety lock is so desired.
4.12
DANGER TAGS
4.12.1 Each switch, circuit breaker, isolator which is operated to the Off position for the
purpose of isolating electrical apparatus shall be fitted with a danger tag. Each
earth switch which is operated to the On position for the purpose of earthing deenergised electrical apparatus shall be fitted with a danger tag.
4.12.2 Danger tags shall include the switching programme number and the electrical
apparatus description and other information as required.
4.13
REMOVAL AND REPLACEMENT OF ELECTRICAL APPARATUS
4.13.1 Any cable tails exposed when High Voltage electrical apparatus has been
removed for repair shall be shown to be dead by the visible application of shorting
and earthing conductors bolted solidly to cable terminals and earth. Shorting and
earthing conductors shall have a cross sectional area not less than the installed
equipment earthing conductor.
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4.7 SWP HIGH VOLTAGE SWITCHING
4.13.2 Repaired High voltage electrical apparatus shall pass High voltage insulation
resistance tests, phasing tests and appropriate over voltage tests before being
reconnected.
4.14
TESTING INSTRUMENTS
4.14.1 All testing instruments used to prove whether High Voltage electrical apparatus is
alive or de-energised shall be rated for use at that voltage and proved to be in
correct working order before and after each use.
4.15
INSULATED TOOLS
4.15.1 All Live Line Working Sticks used for operating Drop Out Fuses or Isolating Links
involving contact with conductors which may be live must, when not in use, be kept
in a clean dry location, enclosed by the protective pouch provided.
4.15.2 Care must be taken during transport or handling of the Live Line Working Sticks so
as not to damage their surface.
4.15.3 Before use, Sticks should be examined and, when necessary wiped thoroughly with a
clean dry cloth. Live Line Working Sticks with surface damage or other defects shall
not be used and shall be withdrawn from service for repair. Arrangements shall be
made for suitable replacements.
4.15.4 All Live Line Working Sticks shall be marked with a rated voltage. Operating Sticks
shall not be used on voltages higher than that marked thereon.
4.16
PROTECTIVE CLOTHING
5.16.1 All persons performing switching operations shall wear appropriate full length flame
retardant protective clothing, leather gauntlets, safety footwear and safety helmet
with high impact heat resistant full face shield.
4.17
SAFETY BELTS
4.17.1 Approved safety belts as detailed in AS 2626 shall be worn and used by all persons
when required to work in an elevated position, except where other approved safety
measures have been taken. This is applicable to Linesman type activities and for the
majority of MWPA activities elevated work will be conducted by an approved HV
Elevated
4.18
LADDERS
4.18.1 Only ladders of an approved type shall be used.
4.18.2 Ladders must be placed in a safe position before being climbed and shall, if
necessary, be tied to the pole or structure before the actual work is commenced.
4.18.3 Erected ladders to which persons, other than Recipients have access, shall not be
left unattended.
4.18.4 Except under emergency conditions involving the safety of personnel, only one
person at a time shall be on a ladder.
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4.19
4.7 SWP HIGH VOLTAGE SWITCHING
FAMILIARITY WITH INSTALLATIONS
4.19.1 Issuing Officers and Switching Programme Checkers shall maintain familiarity
with the High Voltage electrical apparatus for which they are an Authorised
Person.
4.19.2 Issuing Officers shall visit annually each site for which they are an Authorised
Person so as to verify the validity of the relevant single line diagram. Action shall be
taken to have any drawing discrepancies rectified as a matter of urgency.
4.19.3 Any difficulties observed in the carrying out of a switching programme shall be
noted by the Issuing Officer on his file copy of the switching programme for future
reference.
4.20
MOBILE EQUIPMENT NEAR AERIAL HIGH VOLTAGE CONDUCTORS
4.20.1 Parking of vehicles under Aerial High Voltage conductors shall be avoided
wherever possible.
4.20.2 Specialised equipment such as cranes, truck mounted jibs, elevated platform
vehicles or vehicles generally required for work upon electrical apparatus shall be
moved and operated in accordance with OHS Regulations, under the general
direction of the Recipient in Charge of the work.
4.20.3 The specialised equipment, upon reaching the required working position shall, where
practicable, be connected to the installation earthing system, or a driven earth
electrode.
6. ELECTRICAL ACCESS PERMIT PROCEDURE
The removal of electrical apparatus from service to enable the performance of work and the
return of such apparatus to further service shall necessitate the following procedure being
applied.
6.1
OPERATING RECORDS
6.1.1
The Issuing Officer shall file each switching programme. The information heading
the switching programme, and the time and date the switching programme is
commenced and completed musty be filled in.
6.1.2
They shall be filed in numerical order and include the issue and cancellation date of
each electrical access permit.
6.2
SWITCHING PROGRAMME
6.2.1
Prior to preparing a switching programme the Issuing Officer shall take into
account all available information regarding the present status of the electrical
apparatus by completion of the equipment status form.
6.2.2
The switching programme shall clearly describe each step necessary to make
dead specific electrical apparatus and shall include detail of the equipment, its
location and the switching operation required.
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4.7 SWP HIGH VOLTAGE SWITCHING
6.2.3
The switching programme shall include each step required to control the orderly
shutdown and re-initiation of the plant. In addition, the isolation of LV control circuits
shall be listed on the switching programme.
6.2.4
The switching programme shall be checked and confirmed by a switching
programme checker before any switching operations are performed.
6.3
SWITCHING OPERATIONS – ISOLATING
6.3.1
Switching operations on High Voltage electrical apparatus shall only be
performed under the control of an Issuing Officer.
6.3.2
Switching operations shall be carried out in accordance with the prepared
switching programme.
6.3.3
Metal handles and operator earth mats associated with switch or isolator operating
mechanisms shall be checked to ensure their connection to the earthing system
before attempting the switching operation.
6.3.4
After switching, the correct operation of the open outdoor switch or isolator should
where practicable, be visually confirmed by the person performing the operation.
6.3.5
The time that each switching operation, as detailed on the switching programme,
is performed shall be written into the appropriate column on the switching
programme.
6.3.6
Switches and isolators operated to de-energise electrical apparatus shall be
securely locked in the Off position as specified in sub section 5:11.
6.3.7
Danger tags shall be placed at each switch or isolator.
6.3.8
Control circuits, associated with electrical apparatus, switched as above, and
capable of remote or automatic operation, shall be rendered inoperative and have
appropriate danger tags attached as specified in 5:12.
6.4
SWITCHING OPERATIONS – EARTHING
6.4.1
Under no circumstances shall the MEN (Multiple Earthed Neutral) of the low voltage
distribution system be used, or be regarded, as a suitable earthing electrode for
earthing of High Voltage electrical apparatus.
6.4.2
Except as specified in sub section 6.5.7, earthing shall only be carried out under the
control of the Issuing Officer who shall be responsible for the connection of earths
detailed in the switching programme.
6.4.3
Except as specified in sub section 6.5.7 earthing equipment shall only be connected
when the Issuing Officer is satisfied that the electrical apparatus is isolated and
where possible is tested with approved testing instruments to prove that it is deenergised.
6.4.4
Whenever practicable, earthing shall be accomplished by the use of the equipment
integral earth switch.
6.4.5
Approved earthing equipment shall be used to short circuit and earth all
conductors where an integral earth switch is not incorporated.
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4.7 SWP HIGH VOLTAGE SWITCHING
6.4.6
Approved earthing equipment shall first be connected to the High Voltage
earthing system, or to an earth electrode driven for this purpose, before connection to
isolated conductors.
6.4.7
Approved earthing equipment shall be connected immediately after each point of
isolation of the High Voltage supply. In addition, local approved earthing
equipment shall be applied either side, and within sight, of the actual work area.
6.4.8
The time that each earthing connection, listed on the switching programme, is
fitted, shall be written in to the appropriate column.
6.4.9
Earth switches operated for the purpose of earthing isolated electrical apparatus
shall be securely locked in the On position as specified in sub-section 5.11.
6.4.10 Danger tags shall be placed at each earth switch as specified in sub-section 5.12.
6.4.11 Approved earthing equipment shall be positioned such that the connections remain
effective even though adjacent electrical apparatus may be disconnected.
6.5
ELECTRICAL ACCESS PERMITS – ISSUING
Particular attention shall be given to the correct completion of the electrical access
permits. The electrical apparatus concerned, the precautions taken, the witnessing,
issuing, additional earths, and cancellation details shall all be correctly and legibly entered
onto the permit.
6.5.1
Issuing officers only shall issue and cancel electrical access permits.
6.5.2
Whenever practical, Issuing Officers shall describe the isolating and earthing
arrangements made and shall show the Recipient in Charge the electrical
apparatus described in the electrical access permit.
6.5.3
The Issuing Officer shall issue the electrical access permit to the Recipient in
Charge who, having been satisfied that the status of the electrical apparatus is in
accordance with the electrical access permit, and that it is safe for the proposed
work to be undertaken, shall sign as the Recipient in Charge.
6.5.4
The Recipient in Charge shall ensure that all members of the working party, who
may approach the electrical apparatus sign the electrical access permit as a
Recipient once they have satisfied themselves concerning the precautions taken,
the location of points of supply and the proximity of any adjacent live electrical
apparatus.
6.5.5
Any Recipients who may not be satisfied with the conditions applicable may request
that additional precautions be taken prior to or during the course of the work.
6.5.6
Subsequent to the issue of an electrical access permit, additional personnel may
only be introduced into the working party following their familiarisation with the status
of the electrical apparatus, by the Recipient in Charge, who shall then obtain the
signatures of the additional Recipients.
6.5.7
Where additional earthing is necessary following the issue of an electrical access
permit, the Recipient in Charge is authorised to proceed with such earthing.
Precautions necessary for safe application of the approved earthing equipment as
specified in sub clause 6.4 shall be observed.
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MID WEST PORTS AUTHORITY
4.7 SWP HIGH VOLTAGE SWITCHING
6.5.8
The actual number of additional earths or sets of approved earthing equipment
applied shall be recorded on the electrical access permit by the Recipient in
Charge.
6.5.9
Multiple working parties, shall be under the control of one Recipient in Charge, who
shall be responsible for complete co-ordination in planning and performance of the
work to ensure the actions of one working party does not endanger others.
6.5.10 Recipients who leave from a particular work site during the currency of an electrical
access permit shall sign off before departure. Upon their return to the site they shall
report to the Recipient in Charge, and confirm that the status of the electrical
apparatus covered by the electrical access permit has not been varied before they
sign on again.
6.5.11 Authorised Persons responsible for general supervision shall, upon their arrival at a
work site, report to the Recipient in Charge, make themselves familiar with the
conditions of the electrical access permit, and sign on as a Recipient before
approaching any electrical apparatus associated with the work. Prior to leaving the
site, the Authorised Persons shall sign off from the electrical access permit.
6.6
ELECTRICAL ACCESS PERMITS – CANCELLING
6.6.1
Upon completion of the work, the Recipient in Charge shall ensure that any
additional earths or approved earthing equipment, which may have been
connected as specified in sub section 6.5.7 are disconnected and removed.
6.6.2
Each Recipient signed onto the electrical access permit shall be advised that the
electrical apparatus is no longer to be considered safe to approach and their
signature obtained to sign them off from the electrical access permit.
6.6.3
If, due to exceptional circumstances, it is not possible for a Recipient to sign off from
the electrical access permit, the Recipient in Charge may, with the authority of the
Issuing Officer, sign off in their stead. The Recipient in Charge shall ensure that
adequate precautions are then taken to prevent such a Recipient from making any
further approach to the electrical apparatus.
6.6.4
The Recipient in Charge shall relinquish the electrical access permit by signing off
as Recipient in Charge and promptly pass the electrical access permit to the
Issuing Officer.
6.6.5
The Issuing Officer shall be satisfied, by personal inspections or, where this is not
possible, by information obtained from those persons in charge of the work, that the
electrical apparatus is clear of personnel. The Issuing Officer shall then cancel
the electrical access permit.
6.7
SWITCHING OPERATIONS – EARTHING REMOVAL
6.7.1
Except as specified in sub section 6.6.1 earthing equipment shall only be
disconnected after the electrical access permit has been cancelled.
6.7.2
Except as specified in sub section 6.6.1 earthing equipment shall only be removed
under the control of the Issuing Officer, who shall be responsible for the
disconnection and removal of every earth detailed in the switching programme.
The time that each earthing connection is removed shall be written in to the
appropriate column.
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MID WEST PORTS AUTHORITY
4.7 SWP HIGH VOLTAGE SWITCHING
6.7.3
Earth switches operated to the Off position shall be locked securely in that position
using the E-1 padlock.(only authorised personnel have access to these locks)
6.8
SWITCHING OPERATIONS – RE-ENERGISING
6.8.1
Switching operations on High Voltage electrical apparatus shall only be
performed under the control of the Issuing Officer.
6.8.2
The Issuing Officer shall be satisfied that the electrical apparatus is clear and ready
for re-energising and that the electrical access permit has been cancelled in
accordance with these procedures.
Switching operations necessary to re-energise the electrical apparatus shall be
carried out in accordance with the prepared switching programme.
6.8.3
7
ELECTRICAL SANCTION TO TEST PERMIT PROCEDURE
7.1
OPERATING CHECKING
The Issuing Officer shall ensure that any electrical access permit which is
currently in force for the particular item of equipment is relinquished before an
electrical sanction to test permit is issued.
7.2
SWITCHING PROGRAM
The requirements as specified in sub section 6.2.1 to 6.2.4 inclusive shall be
complied with.
7.3
SWTICHING OPERATION – ISOLATION
Except as specified in sub section 7.5.8 the requirements as specified in sub section
6.3.1 to 6.3.8 inclusive shall be complied with.
7.4
SWITCHING OPERATION - EARTHING
7.4.1 The requirements as specified in sub sections 6.4.1 and 6.4.4 to 6.4.11 inclusive
shall be complied with.
7.4.2 Except as specified in sub section 7.5.7, earthing shall only be carried out under the
control of the Issuing Officer who shall be responsible for the connection of earths
detailed in the switching programme.
7.4.3 Except as specified in sub section 7.5.7, approved earthing equipment shall only be
connected when the Issuing Officer is satisfied that the electrical apparatus is
isolated as specified in sub section 6.4.3
7.5
ELECTRICAL SANCTION TO TEST PERMITS – ISSUING
Particular attention shall be given to the correct completion of the electrical sanction
to test permits. The electrical apparatus concerned, the precautions taken, the
witnessing, issuing and cancellation details shall be correctly and legibly entered on
the permit.
7.5.1 Issuing Officers only shall issue and cancel electrical sanction to test permits.
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MID WEST PORTS AUTHORITY
4.7 SWP HIGH VOLTAGE SWITCHING
7.5.2 Whenever practical, Issuing Officers shall describe the isolating and earthing
arrangements made and shall show the Tester in Charge the electrical apparatus
contained in the electrical sanction to test permit.
7.5.3 The Issuing Officer shall issue the electrical sanction to test permit to the Tester
in Charge, who, having satisfied himself that the status of the electrical apparatus
is in accordance with the electrical sanction to test permit and that it is safe for the
proposed work to be undertaken, shall sign as the Tester in Charge.
7.5.4 The Tester in Charge shall ensure that all members of the testing party, who may
approach the electrical apparatus, sign the electrical sanction to test permit as
Testers once they have satisfied themselves concerning the precautions taken, the
location of points of supply and the proximity of any adjacent live electrical
apparatus.
7.5.5
Any Testers, who may not be satisfied with the conditions applicable, may request
that additional precautions be taken during the course of the work.
7.5.6 Subsequent to the issue of an electrical sanction to test permit additional
personnel may only be introduced in to the testing party following their familiarisation
with the electrical apparatus status, by the Tester in Charge, who shall then obtain
the signatures of the additional Testers.
7.5.7 The Tester in Charge is authorised to remove and/or apply earth connections, within
the area defined by the electrical sanction to test permit, in order to facilitate the
performance of specific tests being applied.
7.5.8 The Tester in Charge, in order to perform all aspects of required testing, is
authorised to alter the operational status of a switch or isolator, specifically
described in the electrical sanction to test permit.
7.5.9 The actual number of additional earths or sets of approved earthing equipment
applied shall be recorded on the electrical sanction to test permit by the Tester in
Charge.
7.5.10 Multiple working parties shall be under the control of one Tester in Charge who shall
be responsible for complete co-ordination in planning and performance of the tests
tot ensure the actions of one working party do not endanger others.
7.5.11 Testers who have been absent from a particular work site during the currency of an
electrical sanction to test permit shall, upon their return, report to the Tester in
Charge, and confirm that the status of the electrical apparatus covered by the
electrical sanction to test permit has not been varied.
7.5.12 Authorised Persons responsible for general supervision shall, upon their arrival at a
testing site, report to the Tester in Charge, make themselves familiar with the
conditions of the electrical sanction to test permit, and sign on as Testers before
approaching any electrical apparatus associated with the tests. Prior to leaving the
site, the Authorised persons shall sign off from the electrical sanction to test
permit.
7.6
ELECTRICAL SANCTION TO TEST PERMITS – CANCELLING
7.6.1
Upon completion of the tested, the Tester in Charge shall ensure that any additional
earths or approved earthing equipment, which may have been connected, as
specified in sub section 7.5.7, are disconnected and removed.
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MID WEST PORTS AUTHORITY
4.7 SWP HIGH VOLTAGE SWITCHING
7.6.2
Each Tester signed onto the electrical sanction to test permit shall be advised that
the electrical apparatus is no longer to be considered safe to approach and their
signature obtained to sign them off from the electrical sanction to test permit.
7.6.3
If, due to exceptional circumstances, it is not possible for a Tester to sign off from the
electrical sanction to test permit, the Tester in Charge may, with the authority of
the Issuing Officer, sign off in their stead. The Tester in Charge shall ensure that
adequate precautions are then taken to prevent such a Tester from making any
further approach to the electrical apparatus.
7.6.4
The Tester in Charge shall ensure that the electrical apparatus is restored to the
same status at the conclusion of testing as it was prior to commencement of testing.
Where conditions have changed, the Tester in Charge shall advise the Issuing
Officer of the changed conditions.
7.6.5
The Tester in Charge shall relinquish the electrical sanction to test permit by
signing off as Tester in Charge and promptly pass the electrical sanction to test
permit to the Issuing Officer.
7.6.6
The Issuing Officer shall be satisfied, by personal inspection or, where this is not
possible, by information obtained from those persons in charge of the testing, that the
electrical apparatus is clear of Testers. The Issuing Officer shall then cancel the
electrical sanction to test permit.
7.7 ELECTRICAL ACCESS PERMIT – RE-ISSUING
At this stage, should further work be necessary on the equipment, the electrical sanction to
test permit would be cancelled and the relevant electrical access permit would be reissued, as specified in sub sections 6.5.1 to 6.5.11 inclusive.
7.8 SWITCHING OPERATIONS – EARTHING REMOVAL
7.8.1
Except as specified in sub sections 7.5.7 and 7.6.1 approved earthing equipment
shall only be disconnected after the electrical sanction to test permit has been
cancelled.
7.8.2
Except as specified in sub sections 7.5.7 and 7.6.1 approved earthing equipment
shall only be removed under the control of the Issuing Officer who shall be
responsible for the disconnection and removal of every earth detailed in the
switching programme. The time that each earthing connection is removed shall be
written into the appropriate column.
7.8.3
Earth switches operated to the Off position shall be locked securely in that position
using the E1 padlock.
7.9 SWITCHING OPERATIONS – RE-ENERGISING
7.9.1
Switching operations on High Voltage electrical apparatus shall only be
performed under the control of the Issuing Officer.
7.9.2
The Issuing Officer shall be satisfied that the electrical apparatus is clear and
ready for re-energising and that the electrical sanction to test permit has been
cancelled in accordance with these procedures.
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MID WEST PORTS AUTHORITY
7.9.3
4.7 SWP HIGH VOLTAGE SWITCHING
Switching operations necessary to re-energise the electrical apparatus shall be
carried out in accordance with the prepared switching programme.
8
RELATED DOCUMENTATION:
F2.20a Application for Traffic Management
F4.1c Application to Excavate/Penetrate
F4.1d Application for Hot Work
F4.1e Application for Confined Space
F4.1m BHF Authority to Work (non-routine)
F4.1p Application for Working at Heights
F4.7a HV Electrical Access
F4.7b Authority to work in the Vicinity of Electrical Apparatus
F4.7c High Voltage Electrical Switching Request
F4.7d Sanction to Test
F4.7g Equipment Status Form
F4.7j Electrical Switching Program
F4.7f Authorised Person Certificate
9
ADMINISTRATION
Custodian:
Operations Manager
Approved:
Lindsay Morrison
General Manager, Landside Operations
22 March 2016
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