NZQA registered unit standard
21883 version 2
Page 1 of 3
Title
Demonstrate knowledge of hazards and precautions for working with
gas in plumbing, gasfitting, or drainlaying
Level
2
Purpose
Credits
3
This unit standard is for people who work, or intend to work, in
the plumbing, gasfitting, or drainlaying industries.
People credited with this unit standard are able to: demonstrate
knowledge of the properties and hazards of gas types for
plumbing, gasfitting, or drainlaying; and describe the
precautions and actions to be taken when working with different
gas types for plumbing, gasfitting, or drainlaying.
Classification
Plumbing, Gasfitting and Drainlaying > Core Plumbing,
Gasfitting, and Drainlaying
Available grade
Achieved
Explanatory notes
1
Legislation and the standard relevant to this unit standard include but are not limited
to:
Health and Safety in Employment Act 1992
AS/NZS 2865:2001 Safe working in a confined space (available at
http://www.standards.co.nz).
Any legislation or standard superseding the above will apply, pending review of this
unit standard.
2
Range
Gas may include but is not limited to – ground and sewer gases and fumes, exhaust
fumes.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of the properties and hazards of gas types for plumbing,
gasfitting, or drainlaying.
The Skills Organisation
SSB Code 101554
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
21883 version 2
Page 2 of 3
Evidence requirements
1.1
The description identifies the main properties of the gases.
Range
1.2
composition, visibility, flammability, concentration, toxicity, relative
density, smell, ignition temperature, burning.
The description identifies three dangers of working where gas is present.
Outcome 2
Describe the precautions and actions to be taken when working with different gas types for
plumbing, gasfitting, or drainlaying.
Evidence requirements
2.1
The precautions to be taken to prevent fire and to protect personnel are
described in terms of relevant legislation and NZS 2865:2001.
Range
2.2
flammable mixture, sources of ignition, toxicity, need for
ventilation.
The actions to eliminate sources of ignition are described in terms of relevant
legislation and NZS 2865:2001.
Range
2.3
tools, stray electric currents, naked flames and smoking, electrical
equipment, static electricity, electric cables, vehicles, machinery.
Practical actions to be taken in the event of a gas fire are described.
Range
2.4
deciding a course of action, extinguishing a fire, isolating a gas
supply.
The practical action to be taken in the event of exposure to toxic gases is
described in accordance with relevant legislation and NZS 2865:2001.
Planned review date
31 December 2017
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
25 October 2007
N/A
Review
2
15 March 2012
N/A
Consent and Moderation Requirements (CMR) reference
0008
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
The Skills Organisation
SSB Code 101554
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
21883 version 2
Page 3 of 3
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 The Skills Organisation info@skills.org.nz if you wish to suggest changes
to the content of this unit standard.
The Skills Organisation
SSB Code 101554
 New Zealand Qualifications Authority 2016