16283 version 4
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Remove electricity supply field network equipment from service for
access to work
Level
4
Credits
8
Purpose
People credited with this unit standard are able to: action switching
instructions for the safe removal and return of equipment to service; apply
and remove operator-applied safety devices; and apply live line work
operational procedures.
Subfield
Electricity Supply
Domain
Electricity Supply - Core Skills
Status
Registered
Status date
24 January 2006
Date version published
25 October 2007
Planned review date
30 September 2010
Entry information
Open.
Accreditation
Evaluation of documentation and visit by NZQA and
industry.
Standard setting body (SSB)
Electricity Supply Industry Training Organisation
Accreditation and Moderation Action Plan (AMAP) reference
0120
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Special notes
1
This unit standard may be assessed in a workplace environment, or in a training or
education environment if simulated equipment response and examples are able to be
provided, or in a combination of both environments.
 New Zealand Qualifications Authority 2016
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2
Performance and work practices in relation to the elements and performance criteria
must comply with all current legislation, especially the Electricity Act 1992, and any
regulations and codes of practice recognised under that statute; Health and Safety in
Employment Act 1992; and the Resource Management Act 1991. Electricity supply
industry codes of practice and documented industry procedures include the Safety
Manual – Electricity Industry (SM-EI) (2004) Wellington: Electricity Engineers’
Association, Parts 1-3. A full list of current legislation and industry codes is available
from:
Electricity Supply Industry Training Organisation
PO Box 1245
Hamilton.
3
The following terms relate to this unit standard:
Asset owner refers to the owner of an electricity supply network that takes its point of
supply from Transpower NZ, delivers electricity to industrial, commercial and
residential customers.
Asset owner standards are the approved documented work site methods for carrying
out work on an electrical supply network to the standard required by the asset owner.
Industry requirements include all asset owner requirements; manufacturers’
specifications; and enterprise requirements which cover the documented workplace
policies, procedures, specifications, business and quality management requirements
relevant to the workplace in which assessment is carried out.
Switching refers to actions carried out by a network control centre to divert electrical
current, and permit contractors to perform work safely and efficiently on an electricity
supply network without discontinuing supply to customers.
Switching plan (sometimes referred to as an operating order) is a document that
outlines the sequence of work steps, switching requirements and instructions
required to carry out maintenance, replacement and/or repair of equipment on an
electrical network.
Power network and power system have the same meaning.
Elements and performance criteria
Element 1
Action switching instructions for the safe removal and return of equipment to service.
Performance criteria
1.1
Switching operations are confirmed by all parties immediately prior to doing
switching procedures.
Range
1.2
may include but is not limited to – confirming with system
operators, field operators, contractors.
Switching operations are carried out in accordance with asset owner standards.
Range
may include but is not limited to – involvement with system
operators, field operators, and contractors.
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1.3
Power system equipment is removed from service within agreed time-frame.
Range
1.4
Operations required to prepare plant and equipment for authorised release are
carried out within time-frame specified by asset owner standards.
Range
1.5
may include but is not limited to – use of voltage detectors prior to
application of earths.
Work control measures are accepted, returned, and cancelled in accordance
with asset owner standards and the SM-EI 2004, Parts 1-3 SM-EI.
Range
1.10
may include but is not limited to – removal of local service feeds,
heating, stored energy systems, pneumatic, spring, compressed
air systems.
Safety precautions are carried out in accordance with the SM-EI and asset
owner standards.
Range
1.9
may include but is not limited to – action by system operators, field
operators, contractors.
Mechanical and electrical sources of energy associated with the planned work
are isolated, discharged and rendered safe in accordance with industry
requirements and asset owner standards.
Range
1.8
may include but is not limited to – direct observation by operators,
points of isolation are open, assurance from asset owner or asset
owner’s agent.
Power system plant and equipment is operated in accordance with steps
outlined in switching plan.
Range
1.7
may include but is not limited to – action by system operators,
release coordinators.
Points of isolation are confirmed in locked and/or tagged position in accordance
with industry requirements.
Range
1.6
may include but is not limited to – action by system operators, field
operators, and contractors.
may include but is not limited to – access permit, test permits, live
line approvals, work authority.
Plant and equipment is returned to service within agreed time-frame.
Range
may include but is not limited to – action by system operators,
release coordinators, contractors.
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Element 2
Apply and remove operator-applied safety devices.
Performance criteria
2.1
Safety devices are regularly inspected and maintained in accordance with
electricity regulations.
Range
2.2
Checks on the condition of the safety devices are carried out immediately
before application in accordance with the SM-EI.
Range
2.3
may include but is not limited to – field operators, contractors.
Safety devices are replaced immediately after completion of test procedures
unless otherwise specified by the SM-EI.
Range
2.8
may include but is not limited to – maintenance contractor, system
operator, system release coordinator, supervising officer.
Checks are carried out to ensure all personnel are clear of the network plant
and equipment while doing testing on the network plant and equipment.
Range
2.7
may include but is not limited to – tagging, removal from service
until repaired.
Approval to remove safety devices to test and operate network plant and
equipment is communicated to affected parties.
Range
2.6
may include but is not limited to – used in the manner
recommended by the manufacturer, applied in the correct order as
prescribed by the SM-EI.
Defective components are identified and located in accordance with
manufacturer's specifications and asset owner standards.
Range
2.5
may include but is not limited to – action by field operators,
contractors.
Safety devices are applied in accordance with manufacturer’s specifications and
the SM-EI.
Range
2.4
may include but is not limited to – in good condition, no damaged
leads.
may include but is not limited to – system operators, field
operators, contractors.
Defective safety devices are removed from service in accordance with
manufacturer’s specifications and asset owner standards.
Range
may include but is not limited to – field operators, contractors.
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Element 3
Apply live line work operational procedures.
Performance criteria
3.1
Automatic re-close relays are disabled on circuits and remote closing locked on
line circuit breakers before live line work proceeds.
Range
3.2
Communication links are maintained between live line parties at agreed
intervals.
Range
3.3
may include but is not limited to – action by system operators,
contractor, field operator.
Changes in status of live line circuits are identified and remedial action taken in
accordance with asset owner standards.
Range
3.4
may include but is not limited to – action by system operators,
release coordinators, contractors.
may include but is not limited to – degradation of line protection,
servicing work on de-energised circuit, work on off-load but
energised circuit, tripping of distribution circuit fault.
Circuit breaker automatic re-close is restored and circuit re-livened in
accordance with asset owner standards and industry requirements.
Range
may include but is not limited to – restore auto re-close, remove
warning signs, log returned status.
Please note
Providers must be accredited by NZQA, or an inter-institutional body with delegated
authority for quality assurance, before they can report credits from assessment against
unit standards or deliver courses of study leading to that assessment.
Industry Training Organisations must be accredited by NZQA before they can register
credits from assessment against unit standards.
Accredited providers and Industry Training Organisations assessing against unit standards
must engage with the moderation system that applies to those standards.
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Accreditation requirements and an outline of the moderation system that applies to this
standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The
AMAP also includes useful information about special requirements for organisations
wishing to develop education and training programmes, such as minimum qualifications for
tutors and assessors, and special resource requirements.
Comments on this unit standard
Please contact the Electricity Supply Industry Training Organisation info@esito.org.nz if
you wish to suggest changes to the content of this unit standard.
 New Zealand Qualifications Authority 2016