NZQA Expiring unit standard
913 version 6
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Title
Use the oxy-acetylene process for welding and allied uses in the
motor industry
Level
3
Credits
4
Purpose
This unit standard is for people in the automotive industry who
require skill in oxy-acetylene welding. People credited with this
unit standard are able to: oxy-acetylene weld mild steel
components in a fixed position on a vehicle or machine; bronze
weld components using the oxy-acetylene flame; and join parts
using low temperature brazing.
Classification
Motor Industry > Automotive Workshop Engineering
Available grade
Achieved
Entry information
Critical health and
safety prerequisites
Unit 230, Repair and manufacture automotive components by
oxy-acetylene gas welding, or demonstrate equivalent
knowledge and skills.
Explanatory notes
1
The following regulations and amendments are to be consulted and followed before
welding or heating automotive components for repair or modification:
Transport (Vehicle Standards) Regulations, 1990.
2
The following legislation and amendments are to be consulted and followed where
applicable:
Health and Safety in Employment Act, 1992.
3
Reference to suitable equipment and material means industry approved equipment
and material that are recognised within the industry as being the most suited to
complete the task to a professional and competent manner with due regard to safe
working practices.
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
913 version 6
Page 2 of 4
Outcomes and evidence requirements
Outcome 1
Oxy-acetylene weld mild steel components in a fixed position on a vehicle or machine.
Range
vertical weld, overhead weld.
Evidence requirements
1.1
Safe working practices are observed throughout the task.
Range
1.2
personal safety, safety of others, equipment and vehicle safety.
The components are prepared to ensure a sound basis for welding.
Range
removal of rust and scale, abutting ends square, suitable gap
between the joint edges where full root penetration is required,
components positioned in-situ.
1.3
Heat shielding of adjacent vehicle or machine components is carried out to
prevent any damage and risk of fire and explosion.
1.4
The components are welded in the desired position.
Range
1.5
safety precautions taken, appearance of weld bead, full root
penetration where required, no lack of fusion, no pin holes, parent
metal not undercut, no excessive filler deposits (more than 1.5 mm
above original surface), no leakage occurring through the weld.
The welding equipment is stored safely after use.
Range
prevention of damage to equipment and injury to people.
Outcome 2
Bronze weld components using the oxy-acetylene flame.
Evidence requirements
2.1
Safety precautions are followed throughout the welding process.
Range
safety of the operator, the plant, nearby personnel.
2.2
Suitable equipment and material are selected and used to enable components
to be bronze welded.
2.3
Preparatory work on the components is carried out to ensure a sound basis for
welding.
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
Range
2.4
913 version 6
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cleanliness, joint preparation, pre-heating, positioning of
components.
The welding operation is completed having full root penetration, neat
appearance, and minimal distortion of the components.
Range
welding operation – protection of the components, pre-heating,
flux application and metal tinned, heat localised, welding technique
used, precautions against fumes, post-heating, cooling of the job.
2.5
Bronze overlay allows a layer of 1.5 mm minimum of bronze.
2.6
A rebuilt hole is dressed and drilled to the original size.
Outcome 3
Join parts using low temperature brazing.
Range
brazing in the temperature range 600-850°C using filler metals consisting of
predominantly silver and copper.
Evidence requirements
3.1
Safety precautions are followed throughout the brazing process.
Range
safety of the operator, the plant, nearby personnel.
3.2
Suitable equipment and material are selected and used to enable components
to be brazed.
3.3
Preparatory work on the parts is carried out to ensure a sound basis for
welding.
Range
3.4
joint design, cleanliness, joint gap within the range 0.04 – 0.25
mm.
The brazing operation is completed having neat appearance and minimal
distortion of the components.
Range
joint appearance, strength, ductility, finish.
This unit standard is expiring. Assessment against the standard must take place by
the last date for assessment set out below.
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
913 version 6
Page 4 of 4
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
29 October 1993
31 December 2016
Review
2
4 October 1996
31 December 2016
Review
3
26 February 1999
31 December 2016
Review
4
20 March 2008
31 December 2020
Rollover
5
19 November 2010
31 December 2020
Rollover
6
22 August 2014
31 December 2020
Consent and Moderation Requirements (CMR) reference
0014
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.
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016