NZQA Expiring unit standard
7014 version 5
Page 1 of 3
Title
Analyse cooling system corrosion prevention and vehicle and
machine cooling system requirements
Level
3
Credits
8
Purpose
This theory unit standard is for people who work in the radiator
repair industry. Those credited with this unit standard are able
to demonstrate knowledge of: corrosion types and effects;
corrosion inhibitor and protection devices; and vehicle and
machine cooling system requirements.
Classification
Motor Industry > Automotive Radiator Repair
Available grade
Achieved
Explanatory notes
1
The following legislation and regulations (and subsequent amendments) are relevant
to this unit standard and must be followed where applicable:
– Health and Safety in Employment Act, 1992
– Transport (Vehicle Standards) Regulations, 1990 and Guide to Vehicle Standards
(MOT Guides 1 and 2), (available from Standards New Zealand, telephone 04 498
5991)
– Lead Process Regulations, 1950.
2
When the evidence requirements state company policy, it is assumed that it is to the
same standard as the vehicle and radiator manufacturers' repair standards.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of corrosion types and effects.
Evidence requirements
1.1
Types of corrosion affecting the cooling system are identified.
Range
1.2
pitting, cavitation, galvanic, electrolytic, selective dezincification,
stress corrosion and hydrogen embrittlement, corrosion fatigue.
The effects and appearance of corrosion on the cooling system are identified.
Range
ferrous and non-ferrous metals.
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
7014 version 5
Page 2 of 3
Outcome 2
Demonstrate knowledge of corrosion inhibitor and protection devices.
Evidence requirements
2.1
The characteristics of engine cooling system inhibitors are identified.
Range
changes in temperature, composition of corrosion inhibitors,
deposit reduction, compatibility, performance life.
2.2
Principle of cathodic protection and its application to the cooling system is
identified.
2.3
Principle of sacrificial protection and its application to the cooling system is
described.
2.4
The use of compatible metals of similar galvanic series and the insulation
requirements of dissimilar metals are identified.
2.5
The use of protective coatings when repairing radiators assemblies is identified.
Range
metal conditioners, anti-corrosion paints, sealants, finish coat;
side bands, base plates, tanks, core, shrouds.
2.6
The importance of following vehicle and engine manufacturers' specifications
regarding coolant inhibitor is identified.
2.7
The use of chemical cleaning compounds when flushing the system is
identified.
Range
contaminated cooling systems.
Outcome 3
Demonstrate knowledge of vehicle and machine cooling system requirements.
Evidence requirements
3.1
Factors that influence cooling system performance are identified.
Range
driving and operational conditions, radiator condition – internal and
external, vehicle performance and condition, lack of maintenance,
cooling system leakage, incorrect inhibitor.
3.2
Usage of water filters and conditioners for protecting engines is identified.
3.3
Cooling system checks for an engine that has not been used for some time are
identified.
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
7014 version 5
Page 3 of 3
3.4
Heat exchanger cooler operation service requirements are identified according
to vehicle and component manufacturers’ specifications.
3.5
Cooling system requirements when repowering a vehicle and machine are
identified.
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 Assessment
Registration
1
29 May 1996
31 December 2016
Revision
2
14 November 2000
31 December 2016
Revision
3
16 October 2003
31 December 2016
Review
4
25 January 2008
31 December 2016
Rollover
5
19 November 2010
31 December 2016
Accreditation and Moderation Action Plan (AMAP) reference
0014
This AMAP 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, 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 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.
Consent 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.
NZ Motor Industry Training Organisation
(Incorporated)
SSB Code 101542
 New Zealand Qualifications Authority 2016