10974 version 5
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Use stopple equipment on steel gas pipes
Level
4
Credits
10
Purpose
People credited with this unit standard are able to: locate and identify
procedures, documentation, and equipment for using stopple equipment on
steel pipes; prepare to perform and perform flow stopping; reinstate site; and
complete reporting and documentation.
Subfield
Gas Industry
Domain
Gas Network Construction
Status
Registered
Status date
21 May 2010
Date version published
21 May 2010
Planned review date
31 December 2015
Entry information
Prerequisite: Unit 25611, Demonstrate knowledge of
stopple equipment and operations in a gas distribution
network, or demonstrate equivalent knowledge and
skills.
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.
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2
The current version of the following documents must be complied with:
Health and Safety in Employment Act 1992;
Resource Management Act 1991;
Approved Code of Practice for Safety in Excavation and Shafts for Foundations,
Occupational Safety and Health Service, Dept of Labour, 1995, available at
http://www.osh.dol.govt.nz/order/catalogue/135.shtml;
NZS 5258:2003 Gas distribution networks available at http://www.standards.co.nz;
manufacturer's instructions.
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
Locate and identify procedures, documentation, and equipment for using stopple
equipment on steel pipes.
Performance criteria
1.1
Company procedures for using stopple equipment on steel pipes are located
and interpreted in relation to specified job requirements.
Range
1.2
Job instructions are confirmed in accordance with company procedures.
Range
1.3
may include – job specific written procedure, manufacturer’s
instructions, operating manuals.
contingency plan, site location;
may include – utility plans and/or mark-outs, hot work permit,
consents, easements, authorisation.
Potential environmental and safety hazards are identified in accordance with
company procedures.
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1.4
Stopple equipment, components, and materials are identified and described in
terms of type and function.
Range
type may include – flowstop machine, nitrogen bottle, compressor,
hoses, fittings, plugs, flow stopping bags, valves, adapters,
ultrasonic device, radiographs, crack detectors, gas detection
equipment, fire extinguisher, breathing apparatus, lifting
equipment;
function may include – by-pass/temporary supply, temperature,
pressure, pipe size, wall thickness, pipe condition, flow stop
duration, tolerable leakage.
1.5
Equipment is described in terms of potential hazards of incorrect application
and operation, and the steps to avoid them are described in accordance with
company procedures.
1.6
Resource requirements are identified and sourced in accordance with company
procedures.
Range
plant, tools, materials, documentation, system components,
personnel, safety watches, communication equipment.
Element 2
Prepare to perform and perform flow stopping.
Performance criteria
2.1
Safety and environmental hazards are identified, then isolated, removed, or
minimised, in accordance with company procedures.
Range
2.2
Pipe, flowstop machine and fittings are prepared, handled, and positioned in
accordance with company procedures and manufacturer’s instructions.
Range
2.3
may include – signage, barriers, personal protective equipment,
safe access and egress, gas escape, fire, explosion, asphyxiation,
other utilities, temporary traffic control, environmental protection,
excavations.
may include – pipe condition, pipe strain, cathodic protection, weld
alignment, proximity of welds and fittings, pipe supports.
The welded attachment and flowstop machine are checked and tested in
accordance with company procedures and manufacturer’s instructions.
Range
may include – tightness of bolts, packing nuts and seals, bleed off
point, upstream and down stream pressures, ultrasonic test,
hydrostatic test, air pressure test, nitrogen pressure test.
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2.4
Flowstop machine is operated in accordance with company procedures and
manufacturer’s instructions.
Range
may include – valve operation, leak checking, pressure
monitoring, equalising pressure on both sides of stopple,
depressurising equipment before removal.
Element 3
Reinstate site.
Performance criteria
3.1
Equipment and materials left temporarily on site are stored safely and securely,
or arrangements are made for their collection in accordance with company
procedures.
3.2
Tools, equipment, and materials are removed from site in accordance with job
requirements and company procedures.
3.3
Worksite is reinstated and made safe in accordance with company procedures.
Element 4
Complete reporting and documentation.
Performance criteria
4.1
Information is communicated to other parties, both internal and external, in
accordance with company procedures.
Range
4.2
may include but is not limited to – 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 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.
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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