17449 version 3
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Carry out on load valve tests and simulated trip tests on thermal
electricity generation plant
Level
5
Credits
3
Purpose
People credited with this standard are able to: demonstrate knowledge of the
on load valve tests and simulated trip tests; operate and monitor on load
valve tests and simulated trip tests; and identify and respond to deviations
during on load valve tests and simulated trip tests.
Subfield
Electricity Supply
Domain
Electricity Supply - Thermal Operations and Control
Status
Registered
Status date
23 October 2001
Date version published
25 June 2007
Planned review date
31 December 2008
Entry information
Recommended: National Certificate in Energy and
Chemical Plant (Process Operation) (Level 4) with
optional strands in Refrigeration, Steam Generation,
Ancillary Operations, Geothermal, Waste Treatment,
and Co-generation [Ref: 0141]; National Certificate in
Electricity Supply (Thermal Plant Operator) (Level 4) with
strands in Thermal Operations, Combined Cycle
Operations, and Co-generation Operations [Ref: 0894];
and Unit 17432, Operate control oil systems and steam
admission valves from a thermal generation control
room; or demonstrate equivalent knowledge and skills.
Accreditation
Evaluation of documentation and visit by NZQA and
industry.
Standard setting body (SSB)
Electricity Supply Industry Training Organisation
Accreditation and Moderation Action Plan (AMAP) reference
0120
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
 New Zealand Qualifications Authority 2016
17449 version 3
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Special notes
1
This unit standard is intended for, but not restricted to, workplace assessment. The
range statements within the unit standard can be applied according to industry
specific equipment, procedures and processes.
2
Safety of personnel and plant must be a priority throughout the assessment. If the
safety requirements are not met the assessment must stop and the candidate will be
assessed as not yet competent.
3
Performance and work practices in relation to the elements and performance criteria
must comply with all current legislation, especially the Electricity Act 1992, and any
regulations and codes of practice recognised under that statute; the Health and
Safety in Employment Act 1992; and the Resource Management Act 1991.
Electricity supply industry codes of practice and documented industry procedures
include the Safety Manual – Electricity Industry (SM-EI) (2004) Wellington: Electricity
Engineers’ Association. A full list of current legislation and industry codes is
available from the Electricity Supply Industry Training Organisation, PO Box 1245,
Hamilton.
4
‘Industry requirements’ include all the documented workplace policies, procedures,
specifications, business and quality management requirements relevant to the
workplace in which assessment is carried out.
5
The term ‘operate’ is defined as the remote operation, testing and commissioning of
main and auxiliary thermal plant systems associated with large steam/electrical
generation plant from a control room environment.
Elements and performance criteria
Element 1
Demonstrate knowledge of the on load valve tests and simulated trip tests.
Performance criteria
1.1
Steam chest is described in accordance with industry requirements.
Range
1.2
includes but is not limited to – steam chest layout, purpose of
components, accommodation of expansion.
On load valve test is explained in accordance with industry requirements.
Range
includes but is not limited to – purpose and frequency of tests,
operation of turbine control and stop valves, steam chest physical
layout, causes of sticking turbine control and stop valves, alarms,
interlocks.
 New Zealand Qualifications Authority 2016
17449 version 3
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1.3
On load trip test is explained in accordance with industry requirements.
Range
includes but is not limited to – purpose and frequency of tests,
tripping systems tested, simulation process, alarms, associated
plant effects.
Element 2
Operate and monitor on load valve tests and simulated trip tests.
Performance criteria
2.1
Current status of systems is identified in accordance with industry requirements.
2.2
Routine operations are carried out in accordance with industry requirements.
Range
includes but is not limited to – off load valve test, on load valve
test, on load trip test.
2.3
Actions are logged in accordance with industry requirements.
2.4
Operating decisions are determined in accordance with plant status and
industry requirements.
Range
2.5
includes but is not limited to – plant availability and service
condition, resource consent and loading limits, impact on
operations, options.
Plant and equipment are monitored in accordance with industry requirements.
Element 3
Identify and respond to deviations during on load valve tests and simulated trip tests.
Performance criteria
3.1
Deviations from normal operating conditions are identified, logged and acted
upon in accordance with industry requirements.
Range
3.2
Possible emergency situations are identified and plant emergency procedures
located and explained in accordance with industry requirements.
Range
3.3
includes but is not limited to – test failures.
includes but is not limited to – stuck and jammed turbine control
and stop valves, unplanned turbine control valve closures.
Plant safety procedures are followed in accordance with industry requirements.
Range
includes but is not limited to – physical checks.
 New Zealand Qualifications Authority 2016
17449 version 3
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Please note
Providers must be 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 accredited by NZQA before they can register
credits from assessment against unit standards.
Accredited providers and Industry Training Organisations assessing against unit standards
must engage with the moderation system that applies to those standards.
Accreditation 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.
Comments on this unit standard
Please contact the Electricity Supply Industry Training Organisation info@esito.org.nz if
you wish to suggest changes to the content of this unit standard.
 New Zealand Qualifications Authority 2016