12455 version 4
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Install, commission, and maintain mechanical gas flow correctors
Level
4
Credits
10
Purpose
People credited with this unit standard are able to: install mechanical flow
correctors in a gas distribution network; commission mechanical flow
correctors in a gas distribution network; and maintain mechanical flow
correctors in a gas distribution network; reinstate site; and complete reporting
and documentation.
Subfield
Gas Industry
Domain
Gas Measurement
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 is 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:
Health and Safety in Employment Act 1992;
Resource Management Act 1991;
NZ GCP3: New Zealand Gas Code of Practice for Odorisation (GCP3) available at
http://www.med.govt.nz/ers/gas/codes.html;
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
12455 version 4
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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
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
Install mechanical flow correctors in a gas distribution network.
Performance criteria
1.1
Equipment and fittings for the installation of mechanical flow correctors are
obtained in accordance with site and job specific application.
Range
valves, fittings, temperature and pressure connections, scada.
1.2
Equipment and fittings are checked as fit for purpose and deviations are
reported and replaced in accordance with company procedures.
1.3
Tools and equipment are used in accordance with manufacturer’s instructions.
1.4
Mechanical flow corrector suitable for the application is selected in accordance
with company procedures.
Range
pressure, temperature, Z factor, input, output.
1.5
Components and component parts of mechanical flow correctors are cleaned
and protected in accordance with company procedures.
1.6
Work area is maintained in accordance with company housekeeping
procedures.
1.7
Health and safety requirements and site procedures are complied with during
the installation.
1.8
Mechanical flow correctors are installed in accordance with manufacturer’s
instructions.
Element 2
Commission mechanical flow correctors in a gas distribution network.
Performance criteria
2.1
Adjustments are made to installed mechanical flow correctors in accordance
with manufacturer's instructions and site specific installation requirements or
company procedures.
 New Zealand Qualifications Authority 2016
12455 version 4
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2.2
Methods of testing the installed mechanical flow correctors are identified in
accordance with site requirements and manufacturer’s instructions.
Range
2.3
observation (alarm), test equipment, billing system.
Tests are carried out in accordance with site requirements and manufacturer’s
instructions.
Range
vibration analysis equipment, leak detection, meters, process load
simulators, alignment equipment.
2.4
The work area is reinstated upon completion of the work in accordance with site
requirements and company procedures.
2.5
Documentation and records are completed in accordance with company
procedures.
Element 3
Maintain mechanical flow correctors in a gas distribution network.
Performance criteria
3.1
Mechanical flow correctors are inspected in accordance with company
procedures.
3.2
Deviations from normal are identified and reported, and their cause is
diagnosed in accordance with company procedures.
3.3
Test equipment for diagnosing faults is used in accordance with manufacturer’s
instructions.
3.4
Routine maintenance on mechanical flow correction equipment is carried out in
accordance with company procedures.
3.5
Replacement components or component parts are obtained in accordance with
company procedures and manufacturer’s instructions.
3.6
Replacement components or component parts of mechanical flow correctors
are installed and checked in accordance with manufacturer’s instructions.
3.7
Health and safety requirements, necessary for the completion of the
maintenance, are obtained before the activity commences in accordance with
company procedures.
 New Zealand Qualifications Authority 2016
12455 version 4
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Element 4
Reinstate site.
Performance criteria
4.1
Equipment and materials left temporarily on site are stored safely and securely,
or arrangements are made for their collection in accordance with company
procedures.
4.2
Tools, equipment, and materials are removed from site in accordance with job
requirements and company procedures.
4.3
Worksite is reinstated and made safe in accordance with company procedures.
Element 5
Complete reporting and documentation.
Performance criteria
5.1
Information is communicated to other parties, both internal and external, in
accordance with company requirements.
Range
5.2
may include but is not limited to – readings, downloaded data,
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