NZQA Expiring unit standard
2668 version 6
Page 1 of 3
Title
Demonstrate knowledge of flame, gas, smoke, and heat detectors
Level
3
Credits
2
Purpose
People credited with this unit standard are able to demonstrate
knowledge of:
– flame detectors;
– gas detectors;
– smoke detectors; and
– heat detectors.
Classification
Industrial Measurement and Control > Industrial Measurement
and Control - Theory
Available grade
Achieved
Explanatory notes
1
This unit standard has been developed for learning and assessment off-job.
2
Reference
Department of Labour - Occupational Safety and Health. (1996) Approved code of
practice for the design, safe operation, maintenance and servicing of boilers,
and all subsequent amendments and replacements.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of flame detectors.
Evidence requirements
1.1
Types of flame detectors are stated and their operating principles are described.
Range
1.2
Flame detector applications are identified.
Range
1.3
electric conduction type, visible radiation, photocell, infrared
radiation, ultraviolet radiation.
building fire alarms, boiler controls, furnace controls.
Reasons for self-checking function of flame detectors are explained.
Range
The Skills Organisation
SSB Code 100401
shutter, operational check.
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
2668 version 6
Page 2 of 3
Outcome 2
Demonstrate knowledge of gas detectors.
Evidence requirements
2.1
Types of gas detectors are stated and their operating principles are described.
Range
2.2
semiconductor, polarographic, electrochemical, catalytic.
Gas detector applications are identified.
Range
boiler controls, chemical plant, natural gas, waste/toxic gas.
Outcome 3
Demonstrate knowledge of smoke detectors.
Evidence requirements
3.1
Types of smoke detectors are stated and their operating principles are
described.
Range
3.2
ionisation, photoelectric.
Smoke detector applications are identified.
Range
building fire alarms, boiler controls, furnace controls.
Outcome 4
Demonstrate knowledge of heat detectors.
Evidence requirements
4.1
Types of heat detectors are stated and their operating principles are described.
Range
4.2
bimetallic, thermistor, fusible link (low melting point solder), filled
system.
Heat detector applications are identified.
Range
building fire alarms, boiler controls, furnace controls.
Replacement information
This unit standard has been replaced by unit standard
28081.
This unit standard is expiring. Assessment against the standard must take place by
the last date for assessment set out below.
The Skills Organisation
SSB Code 100401
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
2668 version 6
Page 3 of 3
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
31 October 1995
31 December 2013
Revision
2
30 October 1997
31 December 2013
Revision
3
3 April 2001
31 December 2013
Review
4
22 June 2001
31 December 2013
Review
5
19 May 2008
31 December 2017
Review
6
28 November 2013
31 December 2017
Consent and Moderation Requirements (CMR) reference
0003
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.
The Skills Organisation
SSB Code 100401
 New Zealand Qualifications Authority 2016