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Level 3
Credits 4
Purpose This unit standard is for people who work, or intend to work, in the plumbing or water industries.
People credited with this unit standard are able to: prepare to test water supply backflow prevention devices; inspect and test water supply backflow prevention devices; report results of water supply backflow prevention device testing; and work safely and with care.
Subfield Plumbing, Gasfitting and Drainlaying
Domain
Status
Status date
Date version published
Plumbing
Registered
25 October 2007
25 October 2007
Planned review date
Entry information
31 December 2012
Open.
Accreditation Evaluation of documentation and visit by NZQA and industry.
Standard setting body (SSB) The Skills Organisation
Accreditation and Moderation Action Plan (AMAP) reference 0008
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Special notes
1 Legislation, standards, and codes applicable to this unit standard include but are not limited to:
Health Act 1956;
Health and Safety in Employment Act 1992;
Building Act 2004;
Local Government Act 2002;
Water Supplies Protection Regulations 1961;
AS/NZS 2845.1:1998 Water Supply – Backflow prevention devices – Materials, design and performance requirements ;
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AS/NZS 3500.1:2003, Plumbing and Drainage – Water services, Section 5.2; available at http://www.standards.co.nz;
New Zealand Building Code, current version, available at http://www.dbh.govt.nz;
Backflow Prevention for Drinking Water Suppliers Code of Practice, 2006, available from the New Zealand Water and Wastes Association. Email water@nzwwa.org.nz.
Any legislation, standard, or code superseding any of the above will apply, pending review of this unit standard.
2 Reference
United States Environmental Protection Agency (EPA), Cross-Connection Control
Manual , February 2003, Chapter 5. EPA 816-R-03-002, available at http://www.epa.gov/safewater.
3 Definition
Other services refers to any existing installed services.
Element 1
Prepare to test water supply backflow prevention devices.
Performance criteria
1.1 Site location is identified in accordance with on-site requirements.
1.2 Site access is identified in accordance with Water Supplies Protection
Regulations 1961, local authority by-laws, and legislative requirements.
1.3 Legal responsibilities relating to accessing water supply are identified, and obligations are met prior to testing.
1.4 Documentation for access is completed in accordance with the building compliance schedule, and on-site, legislative, and local authority requirements.
1.5 Testing equipment is checked to ensure it has a current test certificate, and is calibrated in accordance with AS/NZS 2845.1:1998.
1.6 Testing equipment is prepared in accordance with test requirements.
Range includes but is not limited to – test kit, test nipples, spanners and screwdrivers, safety equipment.
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Element 2
Inspect and test water supply backflow prevention devices.
Performance criteria
2.1 Backflow prevention devices are inspected to determine integrity in accordance with the Building Act 2004 compliance schedule for backflow prevention,
AS/NZS 2845.1:1998, Water Supplies Protection Regulations 1961, Backflow
Prevention for Drinking Water Suppliers Code of Practice, and manufacturers’ instructions.
Range atmospheric vacuum break (AVB), barometric loop, wafer check, registered air gap, double detector check, hose connection vacuum breaker, single detector check valve.
2.2 Backflow prevention devices are tested to determine integrity in accordance with the Building Act 2004 compliance schedule for backflow prevention,
AS/NZS 2845.1:1998, Water Supplies Protection Regulations 1961, Backflow
Prevention for Drinking Water Suppliers Code of Practice, and manufacturers’ instructions.
Range pressure vacuum breaker (PVB), spill proof vacuum breaker
(SPVB), double check valve, reduced pressure zone device.
2.3 Faults are identified in terms of causes and possible alternatives for rectification.
2.4
Element 3
Faults are rectified in accordance with manufacturers’ instructions.
Report results of water supply backflow prevention device testing.
Performance criteria
3.1 Reports are completed in accordance with Backflow Prevention for Drinking
Water Suppliers Code of Practice.
3.2 Reports are submitted in accordance with Backflow Prevention for Drinking
Water Suppliers Code of Practice, Building Act 2004 compliance schedule, and local authority by-laws.
3.3 Reports are filed in accordance with Backflow Prevention for Drinking Water
Suppliers Code of Practice.
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Element 4
Work safely and with care.
Performance criteria
4.1 Practical activities are carried out avoiding harm to people and damage to property, other services, materials, tools, and equipment.
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 Skills Organisation info@skills.org.nz if you wish to suggest changes to the content of this unit standard.
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New Zealand Qualifications Authority 2020