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Inspect gas transmission pipeline easements and pipeline systems
Level
3
Credits
3
Purpose
This unit standard is for people working, or intending to work, in the gas
transmission industry.
People credited with this unit standard are able to: describe the requirements
for pipeline walking and inspections; carry out pipeline walking and
inspections on gas transmission pipeline easements; carry out vehicle
patrols on gas transmission pipeline easements; inspect and maintain cased
crossings on gas transmission pipeline easements; inspect an aerial span on
gas transmission pipeline systems; and communicate and document the
results of the inspection of gas transmission pipeline systems.
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 standard:
Health and Safety in Employment Act 1992;
Resource Management Act 1991;
Health and Safety in Employment (Pipelines) Regulations 1999;
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NZS/AS 2885.1:1997 Pipelines – Gas and liquid petroleum – Design and
construction.
2
Definition
Company procedures refer to the documented methods for performing work activities
and include health and safety, environmental, site requirements, and quality
management requirements. They may refer to manuals, codes of practice, or policy
statements.
Elements and performance criteria
Element 1
Describe the requirements for pipeline walking and inspections.
Performance criteria
1.1
Requirements for pipeline walking and inspections are described in accordance
with company procedures.
Element 2
Carry out pipeline walking and inspections on gas transmission pipeline easements.
Performance criteria
2.1
Conditions of right of way to easement are identified and adhered to.
2.2
Maps are read, and the exact area being walked is identified, in accordance
with inspection requirements described in performance criterion 1.1.
2.3
Safety precautions and safety equipment are used in accordance with company
procedures.
2.4
Land problems are identified, and their effects on the pipeline are assessed, in
terms of their location relative to the pipeline.
Range
2.5
Leak indications are identified, and follow up actions are initiated, in accordance
with company procedures.
Range
2.6
may include but is not limited to – planting and vegetation
encroachment, slope erosion, pipe trench erosion, land
movement.
may include but is not limited to – dead vegetation, contaminated
ground, contaminated waterways, subsidence, frozen ground, gas
detection.
All maintenance requirements are noted for action in accordance with company
procedures.
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2.7
Current land use, application, and conditions are established and matched
against existing alignment plans and reported in accordance with company
procedures.
Range
may include but is not limited to – changes in land use, new
subdivisions, industrial developments, changes in water levels and
flows, required development or extension of waste areas.
Element 3
Carry out vehicle patrols on gas transmission pipeline easements.
Range
may include but is not limited to – urban, rural.
Performance criteria
3.1
Vehicle signs stating a pipeline patrol is taking place are attached to the vehicle
in accordance with company procedures.
3.2
Any unauthorised activity within two meters of the pipeline on the roadways or
within the easements off the roadways is investigated in accordance with
company procedures.
3.3
All warning signs on road frontage are confirmed as being fixed, clear, and
legible, in accordance with company procedures.
3.4
Any erosion, scouring of culverts, and/or slips are reported in accordance with
company procedures.
3.5
Streams through which the pipeline crosses are checked for scouring in
accordance with company procedures.
Element 4
Inspect and maintain cased crossings on gas transmission pipeline easements.
Range
may include but is not limited to – sleeved, concrete cased.
Performance criteria
4.1
Maintenance of concrete cased crossings is carried out, as required, from
patrols and inspections in accordance with company procedures.
4.2
Maintenance of vent pipes is carried out, as required, from patrols and
inspections in accordance with company procedures.
Range
4.3
rust at ground level, painting, protection from vehicles.
Cathodic protection test station readings are taken and reported at regular
intervals in accordance with company procedures.
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4.4
Irregularities in cathodic protection test station readings are recognised and
reported in accordance with company procedures.
Element 5
Inspect an aerial span on gas transmission pipeline systems.
Performance criteria
5.1
Pipe coating condition is identified in accordance with company procedures and
maintenance requirements.
Range
5.2
Transition from underground to above ground pipe wrapping requirements is
identified in accordance with company procedures.
Range
5.3
type of wrap, condition, adhesion to pipe, condition of pipe, ground
composition.
Protective barrier maintenance requirements are identified in accordance with
company procedures.
Range
5.4
paint condition, frequency of coating repairs, amount of corrosion.
integrity of barrier, corrosion.
Condition of support devices is inspected in accordance with regulatory
requirements and company procedures.
Range
may include but is not limited to – integrity of supports, corrosion,
ground stability, paint condition, visual impact
Element 6
Communicate and document the results of the inspection of gas transmission pipeline
systems.
Performance criteria
6.1
Results of the inspection are reported in accordance with company procedures.
Range
may include but is not limited to – relevant documentation, reports,
plans, follow up actions;
internal, external notification.
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.
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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