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Title / Demonstrate knowledge of an oxy-acetylene welding plant in the motor industry
Level / 2 / Credits / 2
Purpose / This theory-based unit standard is for people who are at pre-employment level or who have recently started work in the motor body industry. People credited with this unit standard are able to demonstrate knowledge of the oxy-acetylene welding process in the motor industry, and welding faults.
Classification / Motor Industry > Automotive Workshop Engineering
Available grade / Achieved
Guidance Information
1Legislation, regulations and/or industry standards relevant to this unit standard include but are not limited to the current version of the Health and Safety at Work Act 2015; and any subsequent amendments and replacements.
2Company guidelines include workplace standards, practices, and procedures, which must comply with current legislative requirements. It is assumed the policy also meets product manufacturer’s specifications, recommendations, and standards.
Outcomes and performance criteria
Outcome 1
Demonstrate knowledge of the oxy-acetylene welding process in the motor industry.
Performance criteria
1.1Purpose of using an oxy-acetylene plant is explained according to the plant manufacturer’s specifications.
Rangeincludes but is not limited to – brazing, fusion welding, soldering, low temperature brazing, heating metal, cutting.
1.2Principle of how an oxy-acetylene plant operates is explained according to the plant manufacturer’s specifications.
Rangeincludes but is not limited to – gas bottles, welding tips, regulators, hose, cutting tips, heat range.
1.3Safety precautions required for oxy-acetylene welding are described according to the manufacturer’s instructions, company guidelines, and legislative requirements.
Rangeincludes but is not limited to – personal safety, safety to others, gas leaks, safety to vehicle and/or adjacent areas, workshop.
1.4Procedures when using an oxy-acetylene welding plant are explained according to the plant manufacturer’s specifications.
Rangeincludes but is not limited to – brazing, fusion welding, soldering, low temperature brazing, heating metal, cutting; metal preparation.
1.5Procedures for shutting down an oxy-acetylene welding plant are described according to the plant manufacturer’s instructions.
1.6Manufacturer’s instructions are identified to establish manufacturer’s specifications for use.
Outcome 2
Demonstrate knowledge of welding faults.
Performance criteria
2.1Welding faults and causes are described according to the plant manufacturer’s specifications and company guidelines.
Rangeincludes but is not limited to – undercutting, lack of penetration, lack of fusion, excessive splatter, irregular weld shape.
Replacement information / This unit standard and unit standard 21683 were replaced by unit standard 30570.This unit standard and unit standard 21685 replaced unit standard 230 and unit standard 3885.
This unit standard is expiring. Assessment against the standard must take place by the last date for assessment set out below.
Status information and last date for assessment for superseded versions
Process / Version / Date / Last Date for AssessmentRegistration / 1 / 27 July 2005 / 31 December 2018
Review / 2 / 26 October 2017 / 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.
MITO New Zealand IncorporatedSSB Code 101542 / New Zealand Qualifications Authority 2019 / / New Zealand Qualifications Aut