NZQA registered unit standard
28412 version 1
Page 1 of 3
Title
Conduct SCUBA cylinder hydrostatic tests
Level
4
Credits
3
Purpose
People credited with this unit standard are able to: demonstrate
knowledge of SCUBA cylinder periodic inspection and testing;
and conduct SCUBA cylinder hydrostatic tests.
Classification
Diving > Diving - General
Available grade
Achieved
Entry information
Critical health and
safety prerequisites
People seeking credit for this unit standard must hold a current
Environmental Protection Authority Approved Filler certificate
or demonstrate equivalent knowledge and skills.
Explanatory notes
1
Industry technical and safety criteria refers to the candidate performance being
carried out in accordance with the Hazardous Substances (Compressed Gases)
Regulations 2004 and code(s) of practice approved by the Environmental Protection
Authority (EPA) pursuant to sections 78 and 79 of the Hazardous Substances and
New Organisms Act 1996.
2
All testing operations must comply with the requirements of the Health and Safety in
Employment Act 1992, the Health and Safety in Employment Regulations 1995, the
Accident Compensation Act 2001, the Hazardous Substances (Compressed Gases)
Regulations 2004, AS 2337.1:2004 Gas cylinder test stations – General
requirements, inspection and tests – Gas cylinders, Hazardous Substances and New
Organisms Act 1996, and the EPA Guide to Gas Cylinders 2013.
3
Sufficiency for this unit standard requires the hydrostatic testing of a minimum of
three SCUBA cylinders of differing specifications. Of the three cylinders a minimum
of one must be constructed of steel and a minimum of one must be constructed of
aluminium.
4
Inspections may only be carried out at approved EPA accredited testing stations.
5
Whilst conducting hydrostatic cylinder tests the candidate must be supervised by a
periodic tester approved as a test certifier by the EPA. The approved periodic tester
is the only person who can issue a periodic test certificate for each cylinder
subsequent to the candidate’s assessment.
Skills Active Aotearoa Limited
SSB Code 101576
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
6
28412 version 1
Page 2 of 3
Definitions
Organisational requirements refer to a provider’s own policies and associated
documents.
SCUBA refers to Self Contained Underwater Breathing Apparatus.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of SCUBA cylinder periodic inspection and testing.
Evidence requirements
1.1
SCUBA cylinder hydrostatic testing regulations are described in accordance
with industry technical and safety criteria.
Range
1.2
Hazardous Substances (Compressed Gases) Regulations 2004,
Hazardous Substances and New Organisms Act 1996, EPA Guide
to Gas Cylinders 2013, EPA approval as an independent tester,
legislative responsibilities as a periodic tester.
SCUBA cylinder hydrostatic testing procedures are described in accordance
with industry technical and safety criteria and organisational requirements.
Range
identification of the cylinder, removal of any external attachments,
external examination in accordance with AS 2337.1:2004 removal
of the valve, cleaning of cylinder interior and neck threads, internal
examination in accordance with AS 2337 Part 1, checking the
valve for correct function and condition in accordance with AS
2337.1:2004, pressure tests in accordance with the cylinder
specification and AS 2337.1:2004, drying the cylinder, refitting the
valve, partially charging the cylinder with air, checking the cylinder
or valve for leaks, tagging or labelling the cylinder, preparation of a
periodic test certificate for a customer, cylinder hydrostatic test
failure standards and protocol.
Outcome 2
Conduct SCUBA cylinder hydrostatic tests.
Evidence requirements
2.1
SCUBA cylinder hydrostatic testing procedures are performed in accordance
with industry technical and safety criteria and organisational requirements.
Range
2.2
steel cylinder, aluminium cylinder.
SCUBA cylinder hydrostatic testing procedures are conducted in accordance
with industry technical and safety criteria and organisational requirements.
Range
identification of the cylinder, removal of any external attachments,
external examination in accordance with AS 2337.1:2004, removal
Skills Active Aotearoa Limited
SSB Code 101576
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
28412 version 1
Page 3 of 3
of the valve, cleaning of cylinder interior and neck threads, internal
examination in accordance with AS 2337.1:2004, checking the
valve for correct function and condition in accordance with AS
2337.1:2004, pressure tests in accordance with the cylinder
specification and AS 2337.1:2004, drying the cylinder, refitting the
valve, partially charging the cylinder with air, checking the cylinder
or valve for leaks, tagging or labelling the cylinder, preparation of a
periodic test certificate for a customer, cylinder hydrostatic test
failure standards and protocol.
Replacement information
This unit standard replaced unit standard 4407.
Planned review date
31 December 2019
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
20 November 2014
N/A
Consent and Moderation Requirements (CMR) reference
0099
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA,
before they can report credits from assessment against unit standards or deliver courses
of study leading to that assessment.
Industry Training Organisations must be granted consent to assess against standards by
NZQA before they can register credits from assessment against unit standards.
Providers and Industry Training Organisations, which have been granted consent and
which are assessing against unit standards must engage with the moderation system that
applies to those standards.
Requirements for consent to assess and an outline of the moderation system that applies
to this standard are outlined in the Consent and Moderation Requirements (CMR). The
CMR 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 Skills Active Aotearoa Limited info@skillsactive.org.nz if you wish to
suggest changes to the content of this unit standard.
Skills Active Aotearoa Limited
SSB Code 101576
 New Zealand Qualifications Authority 2016