23090 version 1
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Demonstrate knowledge of designing gas regulator and metering
stations in a gas distribution network
Level
4
Credits
6
Purpose
This unit standard is for people working on gas networks. People credited
with this unit standard are able to: demonstrate knowledge of design
specifications for gas regulator and metering stations in a gas distribution
system; and demonstrate knowledge of and interpret design plans for gas
regulator and metering stations for district and network gas supply.
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
Open.
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
23090 version 1
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2
Current versions of the following documents are relevant to this unit standard:
Gas Act 1992;
Health and Safety in Employment Act 1992;
Resource Management Act 1991;
Gas Regulations 1993;
NZS 5258:2003 Gas distribution networks;
NZS 5259:2004 Gas measurement;
gas industry requirements and codes of practice;
International Standards Organisation (ISO) 9000.
3
All work practices must comply with regulations and codes of practice pertaining to
the gas industry. A full list of applicable regulations and codes is available from the
NZ Motor Industry Training Organisation (MITO).
4
Definition
Company policy refers to principles established by the gas network owner to assist
decision-making and determine required action. Such principles include directives,
operating criteria, precedents, and office memoranda relating to the health, safety,
environmental, and quality management requirements of the trainee’s company at
the time of training and/or assessment.
Elements and performance criteria
Element 1
Demonstrate knowledge of design specifications for gas regulator and metering stations in
a gas distribution system.
Performance criteria
1.1
Load requirements for gas supply are identified and explained in accordance
with company policy.
1.2
Feasibility of meeting customers identified load requirements is determined in
relation to company policy.
1.3
Potential locations are identified and their features explained in terms of
relevance to company policy.
Range
1.4
security, environmental, safety, access, availability.
Design specifications and functional performance requirements of regulator and
gas metering stations are identified and explained in terms of relevance to
company policy.
Range
loading, size, regulator selection, upgrade potential, compatibility
with existing system, safety features, safe configurations.
 New Zealand Qualifications Authority 2016
23090 version 1
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Element 2
Demonstrate knowledge of and interpret design plans for gas regulator and metering
stations for district and network gas supply.
Performance criteria
2.1
Design plans for gas regulator and metering stations are explained in terms of
relevance to company procedures, NZS 5258, and NZS 5259.
Range
2.2
Equipment requirements for gas regulator and metering stations are identified
and explained in terms of relevance to company policy, NZS 5928, and NZS
5929.
Range
2.3
location and layout, materials specifications, components
specifications, overall design requirements, component design
requirements, pipework design and specifications, instrumentation
and cathodic protection, overpressure protection, noise
suppression, corrosion protection, enclosures and security
requirements, construction and testing requirements, construction
and testing records, materials, pressure ratings, loads, pressure
losses, system size, safety features;
may also include – hazard analysis documentation, velocities,
system capacity.
regulators, filters, relief valves, valves, safety systems, slam shut
valves, instrumentation, meters, monitoring equipment, telemetry.
Design plans are assessed for safety in accordance with company policy.
Range
includes safety of the environment;
may include but is not limited to – relief venting position, pressure
settings, maximum allowable over pressure, security, signage.
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.
 New Zealand Qualifications Authority 2016
23090 version 1
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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 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