NQF Ref
Version
0923
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Page 1 of 4
National Certificate in Electricity Supply (HVDC and Mercury Arc Valve
Maintenance) (Level 4)
Level
4
Credits
73
This qualification is expiring. The last date to meet the requirements is 31 December
2010.
Purpose
This national certificate is awarded to people who have demonstrated competence in the
advanced skills and knowledge required for employment in the Electricity Supply Industry
as an HVDC or Mercury Arc Valve maintainer.
This qualification contains unit standards that build on the knowledge and skills recognised
by level 4 National Certificates in Electricity Supply in Electrical, Electrical Fitter Networks,
or Mechanical Fitter.
Special Notes
Prerequisite: National Certificate in Electricity Supply (Electrical) (Level 4) with optional
strands in Electrical Fitter Networks, and Electrical Fitter Hydro [Ref: 0921], or National
Certificate in Electricity Supply (Mechanical Fitter) (Level 4) with strands in Hydro,
Networks, and Thermal; and an optional strand in Electrical Services [Ref: 0918], or
demonstration of equivalent knowledge and skills.
Recognition of prior learning will be carried out by accredited providers or Electricity Supply
Industry Training Organisation (ESITO) registered workplace assessors.
Credit Range
Level 2 credits
Level 3 credits
Level 4 credits
Level 5 credits
Total
3
25
36
9
73
Electricity Supply Industry Training Organisation
SSB Code 101813
© New Zealand Qualifications Authority 2008
NQF Ref
0923
Version
Page 2 of 4
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Requirements for Award of Qualification
Award of NQF Qualifications
Credit gained for a standard may be used only once to meet the requirements of this qualification.
Unit standards and achievement standards that are equivalent in outcome are mutually exclusive for the
purpose of award. The table of mutually exclusive standards is provided in section 7 of the New Zealand
Qualifications Authority (NZQA) Rules and Procedures publications available at
http://www.nzqa.govt.nz/ncea/acrp/index.html.
Reviewed standards that continue to recognise the same overall outcome are registered as new versions
and retain their identification number (ID). Any version of a standard with the same ID may be used to meet
qualification requirements that list the ID and/or that specify the past or current classification of the standard.
Summary of Requirements
• Compulsory standards
Detailed Requirements
Compulsory
The following standards are required
Engineering and Technology > Electricity Supply > Electricity Networks
ID
Title
Level
14314
14317
14319
14320
14321
14322
14323
14324
14325
14326
14327
Demonstrate basic knowledge of the fundamental
circuits of the New Zealand HVDC transmission system
Use and maintain "as built", and modify, HVDC
transmission documentation systems
Demonstrate knowledge of the principles of mercury arc
valve (MAV) operation
Apply health and safety requirements in a mercury arc
valve environment
Maintain mercury arc valve (MAV) records
Prepare High Voltage Direct Current (HVDC) mercury
arc valve (MAV) for renovation
Renovate High Voltage Direct Current (HVDC) mercury
arc valves (MAV)
De-gas and reassemble High Voltage Direct Current
(HVDC) mercury arc valve (MAV)
Renovate High Voltage Direct Current (HVDC) mercury
arc valve (MAV) anodes
Carry out scheduled and unscheduled servicing on
HVDC mercury arc valves (MAV)
Carry out pre-service conditioning and function testing
of HVDC mercury arc valves
Electricity Supply Industry Training Organisation
SSB Code 101813
Credit
3
4
3
4
3
6
2
3
3
3
4
10
4
12
5
9
3
8
4
6
4
8
© New Zealand Qualifications Authority 2008
NQF Ref
Version
0923
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Transition Arrangements
Version 2
Version 2 was issued to indicate that this qualification is expiring.
For detailed information see Review Summaries on the NZQA website.
NQF Registration Information
Process
Registration
Review
Version
1
2
Date
January 2002
November 2008
Last Date for Assessment
December 2010
December 2010
Standard Setting Body
Electricity Supply Industry Training Organisation
PO Box 1245
HAMILTON
Telephone
Email
07 834 3038
info@esito.org.nz
Certification
This certificate will display the logos of NZQA, the Electricity Supply Industry Training
Organisation and the accredited organisation.
Classification
This qualification is classified according to the NQF classification system and the
New Zealand Standard Classification of Education (NZSCED) system as specified below.
NQF Classification
NZSCED
Code
Description
Code
Description
318
Engineering and Technology >
Electricity Supply
031301
Engineering and Related
Technologies > Electrical and
Electronic Engineering and
Technology > Electrical
Engineering
Quality Management Systems
Providers and Industry Training Organisations must be accredited by a recognised Quality Assurance Body
before they can register credits from assessment against standards. Accredited providers and Industry
Training Organisations assessing against standards must engage with the moderation system that applies to
those standards. Accreditation requirements and the moderation system are outlined in the associated
Accreditation and Moderation Action Plan (AMAP) for each standard.
Electricity Supply Industry Training Organisation
SSB Code 101813
© New Zealand Qualifications Authority 2008
NQF Ref
Version
0923
Page 4 of 4
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Prerequisite Diagram
Unit 14320
Level 2
Unit14314
Unit 14319
Unit 14321
Unit 14317
Unit 14287
Unit 14319
Unit 14320
Unit 14321
Unit 14319
Unit 14325
Unit 14321
Level 3
Unit 14322
Unit 14323
Unit 14326
Unit 14327
Level 4
Unit 14324
Level 5
Key:
Unit standards not included in this qualification
Electricity Supply Industry Training Organisation
SSB Code 101813
© New Zealand Qualifications Authority 2008