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Level 6
Credits 15
Purpose People credited with this standard are able to: demonstrate knowledge of thermal plant start up; operate and monitor a thermal plant start up; and identify and respond to deviations in a thermal plant start up.
Subfield Electricity Supply
Domain
Status
Status date
Date version published
Planned review date
Entry information
Electricity Supply - Thermal Operations and Control
Registered
23 October 2001
25 June 2007
31 December 2008
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];
Unit 17446, Control and monitor chemistry conditions from a thermal electricity generation control room; Unit
17428 , Operate steam raising equipment from a thermal electricity generation control room; Unit 17448, Monitor turbine supervisory from a thermal electricity generation control room; and Unit 17431, Operate condensers and vacuum raising equipment from a thermal electricity 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
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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.
Element 1
Demonstrate knowledge of thermal plant start up.
Performance criteria
1.1 Pre start checks are described in accordance with industry requirements.
1.2 Start plan is explained in accordance with industry requirements.
Range includes but is not limited to
– plant availability, metal temperature indication, sequence of operations, loading rates, time frames, offer profile.
1.3 Relevant plant manufacturers' recommendations are identified in accordance with industry requirements.
Range includes but is not limited to rise, furnace exit gas temperature limitations, motor maximum number starts per hour.
– pressure and temperature rates of
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1.4 Steam admission concepts are explained in accordance with industry requirements.
Range includes but is not limited to
– saturation temperature, throttling, water hammer, temperature matching, boiler main stop valve operation, drainage.
1.5 Plant system starts are described in accordance with industry requirements.
Range includes but is not limited to – cooling water system, drains system, extraction system, condensate and feedwater systems, dosing pumps, vacuum raising, feed heating systems.
1.6 Methods of controlling system parameters are explained in accordance with industry requirements.
Range includes but is not limited to – pressures, temperatures, drum levels, condensate/demineralised tank levels, deaerator, condenser, chemistry, blow off valves.
1.7 Legislative responsibilities are explained in accordance with industry requirements.
Range includes but is not limited to
– employer and employee responsibilities, discharge rights, reporting, recording, noise limitations.
Element 2
Operate and monitor a thermal plant start up.
Performance criteria
2.1 Current status of relevant systems is monitored throughout the start procedure in accordance with industry requirements.
2.2 Upstream and downstream effects of the operation are assessed in accordance with industry requirements to determine operating requirements.
2.3 Start up is demonstrated and carried out in accordance with industry requirements.
2.4 Actions are logged in accordance with industry requirements.
2.5 Operating decisions are determined in accordance with plant status and industry requirements.
Range includes but is not limited to
– plant availability and service condition, resource consent and loading limits, impact on operations, options.
2.6 Plant and equipment are monitored in accordance with industry requirements.
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Element 3
Identify and respond to deviations in a thermal plant start up.
Performance criteria
3.1 Deviations from normal operating conditions are identified, reported and explained in accordance with industry requirements.
3.2 Plant protection systems are identified and their purpose, operation and activation are described in accordance with industry requirements.
Range includes but is not limited to
– level protection, tripping logic diagrams, burner management systems, over and under pressure relief, purge systems, surge protection, combustion chamber differential.
3.3 Plant safety procedures are followed in accordance with industry requirements.
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.
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New Zealand Qualifications Authority 2020