NZQA registered unit standard
17911 version 4
Page 1 of 4
Title
Conduct ash handling in a thermal electricity generation power
station
Level
3
Credits
5
Purpose
People credited with this unit standard are able to: demonstrate
knowledge of ash and ash handling equipment; operate and
monitor ash handling equipment in a thermal electricity
generation power station; and identify and respond to
deviations in the normal operation of ash handling.
Classification
Electricity Supply > Electricity Supply - Thermal Operations and
Control
Available grade
Achieved
Explanatory notes
1
This unit standard is intended for, but not restricted to, workplace assessment. The
range statements across 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.
3
Performance and work practices in relation to the outcomes and evidence
requirements 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 current version of the Safety Manual – Electricity Industry
(SM-EI) 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 3240.
4
The phrase in accordance with industry requirements is implicit in all outcomes and
evidence requirements in this unit standard.
5
Industry requirements include all asset owner requirements; manufacturers’
specifications; and enterprise requirements which cover the documented workplace
policies, procedures, specifications, business, and quality management requirements
relevant to the workplace in which assessment is carried out.
6
Industry requirements in this unit standard refer to Physical Properties of New
Zealand Coals (Coal Research Association of New Zealand, Lower Hutt, 1991).
Electricity Supply Industry Training Organisation
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
17911 version 4
Page 2 of 4
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of ash and ash handling equipment.
Evidence requirements
1.1
Properties of ash are described.
Range
1.2
Ash handling equipment, operation and location are described.
Range
1.3
includes but is not limited to – ash content, clinker, fly ash, ash
fusion temperature.
includes but is not limited to – hopper ash removal, transport,
furnace bottom arrangement, sluice-ways, pumps, ash pit,
crushers, precipitators.
Ash and ash handling equipment operating parameters are identified.
Range
includes but is not limited to – frequency of ashing operations.
Outcome 2
Operate and monitor ash handling equipment in a thermal electricity generation power
station.
Evidence requirements
2.1
Current status of equipment is identified.
2.2
Operations are carried out.
Range
includes but is not limited to – furnace ashing, airheater and
economiser grit hopper emptying, precipitator dust hopper
emptying, vacuum plant hopper emptying, local valve and lighting
operation.
2.3
Operating and monitoring actions are logged.
2.4
Operating decisions are determined.
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.
Electricity Supply Industry Training Organisation
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
17911 version 4
Page 3 of 4
Outcome 3
Identify and respond to deviations in the normal operation of ash handling.
Evidence requirements
3.1
Deviations from normal operating conditions are identified, logged and acted
upon.
includes but is not limited to – blockages, excessive ash, large
lumps of ash, fused ash, furnace personnel warning alarm, poor
vacuum, mill bay alarm.
Range
3.2
Plant safety, fire and emergency procedures are followed.
includes but is not limited to – blow-backs, hang ups, furnace
personnel warning alarm, mill bay alarm.
Range
Planned review date
31 December 2015
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
28 November 2000
N/A
Revision
2
11 February 2004
N/A
Rollover and
Revision
3
25 June 2007
N/A
Review
4
9 December 2010
N/A
Accreditation and Moderation Action Plan (AMAP) reference
0120
This AMAP 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, 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 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.
Electricity Supply Industry Training Organisation
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
17911 version 4
Page 4 of 4
Consent 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.
Electricity Supply Industry Training Organisation
SSB Code 101813
 New Zealand Qualifications Authority 2016