12519 version 4
Page 1 of 3
Demonstrate knowledge of odorisation in a gas distribution network
Level
3
Credits
6
Purpose
People credited with this unit standard are able to identify the main
requirements of gas odorisation in a gas distribution network; and identify
equipment for the storage, handling, monitoring, and injection of odorants in
a gas distribution system.
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.
2
The main reference for this unit standard is the current version of NZ GCP3:
New Zealand Gas Code of Practice for Odorisation of Gas available at
http://www.med.govt.nz/ers/gas/codes.html.
3
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.
 New Zealand Qualifications Authority 2016
12519 version 4
Page 2 of 3
Elements and performance criteria
Element 1
Identify the main requirements of gas odorisation in a gas distribution network.
Performance criteria
1.1
The reasons for odorising gas are explained in accordance with regulatory
requirements.
1.2
The attributes that gas odorant must possess are explained in accordance with
regulatory requirements.
1.3
Gas odorisation is described in terms of chemical and physical properties.
Range
types, limits, concentrations, in-line reactions, masking, fading.
1.4
Methods of testing and monitoring odorant concentrations and odour levels are
explained in accordance with company procedures.
1.5
Methods of recording odorant concentrations and odour levels are described in
accordance with company procedures and regulatory requirements.
1.6
The methods used for the safe handling, storage, and injection of odorants are
described in accordance with company procedures and regulatory
requirements.
Element 2
Identify equipment for the storage, handling, monitoring, and injection of odorants in a gas
distribution system.
Performance criteria
2.1
Odorant injection, storage, handling and transportation equipment is described
and component parts are identified in accordance with company system design.
Range
2.2
metering devices, control valves, flares, relief valves, injection,
bypass odoriser, vessels, tanks, cylinders, drums.
Equipment for measuring odorant concentrations and odour levels is described
in accordance with company procedures.
Range
senses, sample vessels, sample lines, odour level testers, odour
concentration testers.
2.3
Methods of setting up and injecting odorants are described in accordance with
company equipment application.
2.4
Methods of dealing with odorant spillages are described in accordance with
company procedures.
 New Zealand Qualifications Authority 2016
12519 version 4
Page 3 of 3
2.5
Records are made 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