9579 version 4
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Carry out cathodic protection system troubleshooting survey in the gas
transmission industry
Level
4
Credits
4
Purpose
This unit standard is for people working, or intending to work, in the gas
transmission industry.
People credited with this unit standard are, in the gas transmission industry,
able to: demonstrate knowledge of cathodic protection system
troubleshooting equipment used; use cathodic protection system
troubleshooting equipment; locate and use documentation and reporting
criteria for a cathodic protection troubleshooting survey; and report the
results of the cathodic protection troubleshooting survey.
Subfield
Gas Industry
Domain
Gas Transmission Operations
Status
Registered
Status date
22 May 2009
Date version published
22 May 2009
Planned review date
31 December 2014
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
Performance of the elements of this unit standard must comply with relevant site
requirements, and the following legislation and standards:
Health and Safety in Employment Act 1992;
Resource Management Act 1991;
AS 2832.2-2003, Cathodic protection of metals – Compact buried structures;
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9579 version 4
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BS 7361-1:1991, Cathodic protection – Code of practice for land and marine
applications;
NACE TM 0169-2000 Laboratory Corrosion Testing of Metals, a National Association
of Corrosion Engineers Standard (North America).
2
Definition
Company procedures refer to the documented methods for performing work activities
and include health and safety, environmental, quality management, and site
requirements. They may refer to manuals, codes of practice, or policy statements.
Elements and performance criteria
Element 1
Demonstrate knowledge of cathodic protection system troubleshooting equipment used in
the gas transmission industry.
Performance criteria
1.1
Cathodic protection system troubleshooting equipment is described in
accordance with manufacturer’s instructions.
1.2
Site cathodic protection system troubleshooting equipment is located, and its
use is explained in accordance with manufacturer’s instructions.
Range
1.3
flange isolation tester, direct current voltage gradient meters, halfcells, data logger, cathodic protection system interrupter, pipe
locater, multi-meter, current measuring swain clamp.
Cathodic protection system troubleshooting equipment functions are explained
to identify the type of information relayed in accordance with company
procedures.
Element 2
Use cathodic protection system troubleshooting equipment in the gas transmission
industry.
Performance criteria
2.1
Safety procedures relating to troubleshooting, and system interruption and
isolation, are used in accordance with company procedures.
2.2
Conditions are assessed to determine the need to use cathodic protection
system troubleshooting equipment.
Range
2.3
flange isolation tester, direct current voltage gradient meters, halfcells, data logger, cathodic protection system interrupter, pipe
locater, multi-meter, current measuring swain clamp.
Fault conditions and types are identified to determine equipment requirements.
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Range
electrical isolation problems, coating problems, broken wire,
cathodic protection system interruptions.
2.4
Methods of cathodic protection system interruption and isolation are used in
accordance with company procedures.
2.5
Cathodic protection system troubleshooting equipment is selected in
accordance with company procedures and job requirements.
2.6
Cathodic protection system troubleshooting equipment is operated in
accordance with company procedures and manufacturer's instructions.
2.7
Potential hazards of incorrect application and operation of equipment and
systems are explained in accordance with manufacturer's instructions and
company procedures.
Element 3
Locate and use documentation and reporting criteria for a cathodic protection
troubleshooting survey in the gas transmission industry.
Performance criteria
3.1
Specified documentation related to the operation of cathodic protection system
troubleshooting equipment is located, and is used in accordance with company
procedures and manufacturer's instructions.
Range
test certificates, certification, standards for safety, standards for in
service safety inspection and testing of equipment, identification
tags, labels.
3.2
General site equipment documentation and information are located, and are
used in accordance with company procedures.
3.3
International cathodic protection standards and reporting criteria are used in
accordance with company procedures.
Range
British standards, Australian standards, North American corrosion
engineer standards.
Element 4
Report the results of the cathodic protection troubleshooting survey in the gas
transmission industry.
Performance criteria
4.1
Corrections to primary data of the cathodic protection troubleshooting survey
are made in accordance with company procedures.
4.2
Results of the cathodic protection troubleshooting survey are calculated from
primary data in accordance with company procedures.
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4.3
Deviations from the expected range of results are investigated and actions are
taken in accordance with company procedures.
4.4
The report includes all information gathered in the cathodic protection
troubleshooting survey in accordance with company procedures.
4.5
Outcomes of the analysis are reported and conclusions are drawn in
accordance with international cathodic protection standards and reporting
criteria.
Range
British standards, Australian standards, North American corrosion
engineer standards.
Please note
Providers must be accredited by NZQA, 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 NZQA 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