19550 version 2
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Restore supply after interruption to domestic gas consumer in a gas
distribution network
Level
3
Credits
5
Purpose
People credited with this unit standard are able to: locate and identify
procedures, documentation, and equipment for reinstating domestic gas
consumers after interruption of supply; prepare for and reinstate supply to
domestic consumer; reinstate site; and complete reporting and
documentation.
Subfield
Gas Industry
Domain
Gas Network Operations
Status
Registered
Status date
20 November 2006
Date version published
20 November 2006
Planned review date
31 December 2011
Entry information
Prerequisite: Unit 17690, Identify potential hazards of
and safety precautions for working with live reticulated
gas, or demonstrate equivalent knowledge and skills.
Replacement information
This unit standard replaced unit standard 10970.
Accreditation
Evaluation of documentation and visit by NZQA and
industry.
Standard setting body (SSB)
NZ Motor Industry Training Organisation (Incorporated)
(MITO)
Accreditation and Moderation Action Plan (AMAP) reference
0114
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Special notes
1
This unit standard is intended for, but not limited to, workplace assessment. The
range statements relate to enterprise specific equipment, procedures, and
processes.
 New Zealand Qualifications Authority 2016
19550 version 2
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2
The current version of the following documents must be complied with:
Health and Safety in Employment Act 1992;
NZS 5258:2003 Gas distribution networks available at http://www.standards.co.nz/;
NZS 5262:2003 Gas appliance safety available at http://www.standards.co.nz/;
3
All work practices must comply with regulations and codes of practice pertaining to
the gas industry. A full list of current regulations and applicable codes is available
from the NZ Motor Industry Training Organisation (Incorporated) (MITO).
4
This unit standard is intended for the testing, purging, and reinstatement after
interrupted supply. It does not cover the commissioning and certification of
installations.
5
Definition
Company procedures means the documented methods for performing work activities
and include health and safety, environmental, and quality management requirements.
They may refer to manuals, codes of practice, or policy statements.
Elements and performance criteria
Element 1
Locate and identify procedures, documentation, and equipment for reinstating domestic
gas consumers after interruption of supply.
Performance criteria
1.1
Company procedures for reinstating domestic gas consumers after interruption
of supply are located and interpreted in relation to specified job requirements.
1.2
Job instructions are confirmed in accordance with company procedures.
Range
instructions include – site location, liaison, authorisation,
easements.
1.3
Potential environmental and safety hazards are identified in accordance with
company procedures.
1.4
Equipment, components, and materials for reinstating domestic gas consumers
after interruption of supply are identified and described in terms of type and
function.
Range
1.5
equipment – tools, test gauge (manometer), soap, leak detector,
fittings, continuity bond;
function – pressure, leak detection, sealing.
Equipment is described in terms of potential hazards of incorrect application
and operation, and the steps to avoid them are described in accordance with
company procedures.
 New Zealand Qualifications Authority 2016
19550 version 2
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1.6
Resource requirements are identified and sourced in accordance with company
procedures.
Range
plant, tools, materials, documentation, personnel, communication
equipment.
Element 2
Prepare for and reinstate supply to domestic consumer.
Performance criteria
2.1
Safety hazards are identified, and isolated, removed, or minimised in
accordance with company procedures.
Range
2.2
Equipment is prepared in accordance with company procedures and
manufacturer’s instructions.
Range
2.3
may include – personal protective equipment, safe access and
egress, fire, explosion, asphyxiation, environmental protection, gas
escapes, continuity bonding.
gauges, gas detection equipment.
The installation is pressure tested in accordance with company procedures.
Range
inlet valve let-by, bleed pressure, stabilisation, soundness, lockup.
2.4
Actions taken where domestic installations or components are found to be
defective or where problems occur that impede the commissioning are in
accordance with company procedures.
2.5
Domestic installations are purged, gas is vented, and final gas is achieved in
accordance with company procedures.
Element 3
Reinstate site.
Performance criteria
3.1
Equipment and materials left temporarily on site are stored safely and securely,
or arrangements are made for their collection in accordance with company
procedures.
3.2
Tools, equipment, and materials are removed from site in accordance with job
requirements and company procedures.
3.3
Worksite is reinstated and made safe in accordance with company procedures.
 New Zealand Qualifications Authority 2016
19550 version 2
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Element 4
Complete reporting and documentation.
Performance criteria
4.1
Information is communicated to other parties, both internal and external, in
accordance with company procedures.
Range
4.2
may include but is not limited to – special conditions, completion
notice, additional work.
Records and documents are completed and processed in accordance with
company procedures.
Please note
Providers must be accredited by the Qualifications Authority, 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 the Qualifications Authority 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.
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 NZ Motor Industry Training Organisation (Incorporated) (MITO)
info@mito.org.nz if you wish to suggest changes to the content of this unit standard.
 New Zealand Qualifications Authority 2016