NZQA registered unit standard
10421 version 5
Page 1 of 4
Title
Service water turbines in electricity supply power plants
Level
3
Credits
6
Purpose
People credited with this unit standard are able to: demonstrate
knowledge of the principles of operation of water turbines; and
plan, service, test, and report a routine service on water
turbines.
Classification
Electricity Supply > Electricity Supply - Power System
Maintenance
Available grade
Achieved
Entry information
Critical health and
safety prerequisites
Unit 2395, Select, use and care for, engineering hand tools;
and Unit 2396, Select, use and maintain portable hand held
engineering power tools; or demonstrate equivalent knowledge
and skills.
Explanatory 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.
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.
Electricity Supply Industry Training Organisation
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
10421 version 5
Page 2 of 4
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
This unit standard includes – wicket gates, gate links swing ring, trunnion assembly,
stay rings and vanes, shear pins, runner, top cover, vacuum breaker, turbine seals.
7
This unit standard excludes turbine bearings.
8
The term service includes preventative maintenance, inspections, cleaning,
monitoring, and checking of generation plant and equipment.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of the principles of operation of water turbines in electricity supply
power plants.
Range
Francis, Kaplan, Pelton, bulb turbines.
Evidence requirements
1.1
The principles of water turbine operation are described and defined.
1.2
Water turbine construction and components are described.
Outcome 2
Plan service requirements for water turbines in electricity supply power plants.
Evidence requirements
2.1
Work plans are prepared.
2.2
Prepared plans identify all necessary procedures and resources required for the
service.
2.3
Work plans and specifications are complete, concise, and legible, and reflect
identified hazards. Identified hazards are eliminated, isolated, or minimised.
2.4
Work plans and specifications are made available for all personnel involved in
implementing the plans within the scheduled time-frame.
Electricity Supply Industry Training Organisation
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
10421 version 5
Page 3 of 4
Outcome 3
Service water turbines in electricity supply power plants.
Range
one turbine from – vertical or horizontal Francis, Kaplan, Pelton, bulb turbines.
Evidence requirements
3.1
Isolations are checked.
3.2
Water turbines and components requiring service are identified.
3.3
Water turbines and components are serviced.
Range
3.4
conduct in-service visual inspections for damage and defects;
lubricate as per schedules seals, linkages, and swing ring; check
fixtures and mountings for security; check identification labelling
record condition monitoring data, vacuum, temperatures, and
pressures; clear drains and ejectors; check packings.
Service activities and resources are co-ordinated throughout the duration of the
work to minimise disruption to personnel, plant, electricity generation, and the
environment.
Outcome 4
Test water turbines in electricity supply power plants.
Range
test run, test readings, noise.
Evidence requirements
4.1
Tests are carried out in accordance with the prepared work plan.
Outcome 5
Report a routine service.
Range
service report, job sheet, daily diary, log book, test reports and results, plant
history, authorisations, ‘as-built’ drawings.
Evidence requirements
5.1
Reported information is completed and actioned.
5.2
Maintenance information is recorded in the agreed format and filed within the
scheduled time-frame.
5.3
Any further action required for plant and equipment is identified, recorded, and
communicated to appropriate personnel.
Electricity Supply Industry Training Organisation
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
Planned review date
10421 version 5
Page 4 of 4
31 December 2015
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
28 April 1997
N/A
Review
2
30 November 2000
N/A
Revision
3
11 February 2004
N/A
Rollover and
Revision
4
21 November 2008
N/A
Review
5
19 November 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.
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