NZQA registered unit standard
21466 version 4
Page 1 of 4
Title
Operate compressors in an energy and chemical plant
Level
4
Purpose
Credits
8
This unit standard is for people working as boiler and energy
and chemical process operators in an energy and chemical
plant.
People credited with this unit standard are able to: demonstrate
knowledge of compressors used in the energy and chemical
industry, and control and protection systems of compressors;
and operate compressors, in an energy and chemical plant.
Classification
Energy and Chemical Plant > Operation of Energy and
Chemical Plant
Available grade
Achieved
Explanatory notes
1
Assessment conditions
All assessment must be carried out at an energy or chemical site.
2
Definitions
Energy and chemical plant may be in – petrochemical, agri-nutrient, power
generation, dairy processing, meat processing, and wood fibre manufacturing, or
other plants that operate with a combination of high temperatures, pressures, steam
and/or chemicals in gas, liquid or solid form.
Organisational requirements – documented policies and procedures. These may
include: equipment manufacturers’ procedures, plant procedures, suppliers’
instructions, site signage, codes of practice, company health and safety plans, on site
briefings, and supervisor’s instructions. This includes all regulatory and legislative
obligations that apply to the plant.
Plant – operational unit, equipment and/or workplace at which the person is working.
3
Legislation relevant to this unit standard includes but is not limited to – Hazardous
Substances and New Organisms Act 1996, Health and Safety in Employment Act
1992, Resource Management Act 1991.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
21466 version 4
Page 2 of 4
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of compressors used in the energy and chemical industry.
Evidence requirements
1.1
Types of compressors are described in terms of method of operation and
design concepts.
Range
1.2
Components of compressors are described in terms of their function.
Range
1.3
components include but are not limited to –coupling, casing, shaft,
impeller, bearings, seals, instrumentation.
Compressor systems are described in terms of their design concepts.
Range
1.4
types include but are not limited to – centrifugal, reciprocating,
single stage, multi stage, axial flow.
design concepts include but are not limited to – filtration, pulsation
dampers, lubrication system, cooling system, minimum flow, duty
or standby system, drain.
Compressor operational deviations are explained in terms of their causes.
Range
operational deviations include but are not limited to – vibration,
stall, overload, low discharge pressure, surge.
Outcome 2
Demonstrate knowledge of control and protection systems of compressors in an energy
and chemical plant.
Evidence requirements
2.1
Control and protection systems for compressors are identified and explained in
terms of their purpose.
Range
evidence is required of two control and four protection systems for
a specific site.
Outcome 3
Operate compressors in an energy and chemical plant.
Evidence requirements
3.1
Safe work practices are used when operating compressors in accordance with
organisational requirements.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
21466 version 4
Page 3 of 4
3.2
The location of compressors is identified in accordance with the site specific
identification coding system.
3.3
Compressors are started up and shut down in accordance with organisational
requirements.
3.4
Plant checks and routine procedures are carried out on compressors in
accordance with organisational requirements.
3.5
All plant documentation related to the process and equipment operation is
completed in accordance with organisational requirements.
Planned review date
31 December 2019
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
27 June 2005
31 December 2014
Rollover and
Revision
2
25 July 2006
31 December 2014
Review
3
22 May 2009
31 December 2016
Review
4
24 October 2014
N/A
Consent and Moderation Requirements (CMR) reference
0079
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.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
21466 version 4
Page 4 of 4
Comments on this unit standard
Please contact the Primary Industry Training Organisation standards@primaryito.ac.nz if
you wish to suggest changes to the content of this unit standard.
Primary Industry Training Organisation
SSB Code 101558
 New Zealand Qualifications Authority 2016