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Operate boiler steam and water circuit in a thermal electricity generation
power station
Level
4
Credits
5
Purpose
People credited with this standard are able to: demonstrate knowledge of
boiler steam and water circuit systems and controls; operate and monitor
boiler steam and water circuit systems; and identify and respond to
deviations.
Subfield
Electricity Supply
Domain
Electricity Supply – Thermal Operations and Control
Status
Registered
Status date
29 August 2000
Date version published
25 June 2007
Planned review date
31 December 2008
Entry information
Open.
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.
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.
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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 ‘boiler steam and water circuit’ is defined as beginning at the feed water
regulating valves and ending at final steam outlets. This includes water and steam
paths through the boiler and associated vents and drains.
6
This unit standard excludes boiler circulation pumps, and chemical monitoring and
dosing, auxiliary steam.
7
The term ‘operate’ is defined as manual operation and testing of thermal electricity
generation plant including plant adjustments, isolations and restorations.
Elements and performance criteria
Element 1
Demonstrate knowledge of boiler steam and water circuit systems and controls.
Performance criteria
1.1
Principles of steam production are described in accordance with industry
requirements.
Range
1.2
The location, operation and components of plant boiler steam and water circuit
systems are described in accordance with industry requirements.
Range
1.3
boiler circulation types, steam production, saturated and super
heated steam, latent heat.
includes but is not limited to – feed water regulating valves,
economiser, drums, boiler water circuit, super heater, boiler
valves, re-heaters, de-super heaters, safety valves, level
indication.
The location, operation and components of the boiler vents and drains systems
are described in accordance with industry requirements.
Range
includes but is not limited to – blow down network, water circuit
drainage, steam circuit drainage and venting, drainage vessels.
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1.4
Operating parameters are identified in accordance with industry requirements.
Range
includes but is not limited to – temperature, pressure, differentials,
level, flows.
Element 2
Operate and monitor boiler steam and water circuit systems.
Performance criteria
2.1
Current status of system is identified in accordance with industry requirements.
2.2
Operations are carried out in accordance with industry requirements.
Range
includes but is not limited to – isolations, restorations, routine
testing, gauge glass, boiler filling and venting, boiler drainage,
boiler storage, hydraulic testing.
2.3
Operating and monitoring 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 in the normal operation of boiler steam and water circuit.
Performance criteria
3.1
Deviations from normal operating conditions are identified, logged and acted
upon in accordance with industry requirements.
Range
3.2
includes but is not limited to – leaks, passing valves, over
pressurisation.
Plant safety, fire and emergency 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.
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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