23088 version 1
Page 1 of 3
Demonstrate knowledge of standard gas pressure control equipment
Level
3
Credits
8
Purpose
People credited with this unit standard are able to demonstrate knowledge of
the types, principles, design, construction, and application of standard gas
pressure control equipment.
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.
Replacement information
This unit standard replaced unit standard 12522 and unit
standard 19553.
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.
2
The current version of the following documents must be complied with:
Gas Act 1992;
Health and Safety in Employment Act 1992;
Gas Regulations 1993;
NZS 5258:2003 Gas distribution networks available at http://www.standards.co.nz;
NZS 5259:2004 Gas measurement available at http://www.standards.co.nz.
 New Zealand Qualifications Authority 2016
23088 version 1
Page 2 of 3
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 (Incorporated) (MITO).
4
Definitions
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.
Standard gas pressure control equipment excludes pilot-operated regulators, and
active monitor and automatic stream selection configurations.
Opso means over-pressure shut-off.
Upso means under-pressure shut-off.
Elements and performance criteria
Element 1
Demonstrate knowledge of the types and principles of standard gas pressure control
equipment.
Performance criteria
1.1
The three basic elements of a regulator are identified and described in terms of
their function.
1.2
Components of gas regulators are defined in accordance with gas industry
terminology.
Range
1.3
spring, valve, valve seat, diaphragm, valve stem/spindle, internal
relief, breather, orifice, pilot, weight.
Standard gas pressure control equipment and symbols are identified and
described in accordance with gas industry terminology.
Range
regulators, slam shut, upso valve, opso valve, relief valve.
1.4
Standard gas pressure control equipment types are identified and their features
described in terms of gas industry application.
1.5
Standard gas pressure control equipment is described in terms of principles of
operation and application.
Range
1.6
internal relief, separate relief, regulators, upso valve, opso valve,
slam shut, stage control.
Methods of identifying, handling, transporting, and storing, gas regulators and
relief valves are described in accordance with company procedures and
manufacturer's requirements.
Range
badge plate, dust caps, packaging, sealing wire.
 New Zealand Qualifications Authority 2016
23088 version 1
Page 3 of 3
Element 2
Demonstrate knowledge of the design, construction, and application of standard gas
pressure control equipment.
Performance criteria
2.1
Functions of each component of standard gas pressure control equipment are
described in accordance with manufacturer’s specifications.
Range
2.2
Application of standard gas pressure control equipment is described in terms of
system requirements.
Range
2.3
pressure, flow, control systems, location, configuration.
Design and construction features of standard gas pressure control equipment
are described in accordance with system requirements and manufacturer's
specifications.
Range
2.4
diaphragm, seat, spring, orifice, vent.
materials, pressure, flow, location, droop, speed of response.
Typical regulator configurations are described in terms of industry usage.
Range
may include but is not limited to sketches.
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