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Overview
This Asset Management Plan covers the electricity networks of Marlborough
(Marlborough Lines) and the greater Otago region excluding Dunedin and Central
Otago (OtagoNet).
The Plan is depicted in two sections; firstly that pertaining specifically to the
Marlborough network and secondly that related to the Otago network.
Marlborough Lines owns 100% of the Marlborough network and 51% of OtagoNet.


Section 1: Marlborough Lines Asset Management Plan



Marlborough
Asset Management Plan
Marlborough Lines Limited
June 2003






Marlborough
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Table of Contents

Summary..............................................................................................1
Introduction .........................................................................................4
Background......................................................................................4
Objectives.........................................................................................5
Asset Management Plan Processes ...............................................5
Key Accountabilities and Responsibilities ...................................6
GIS System..................................................................................7
Condition Assessment.................................................................7
ISO System......................................................................................8
Transpower Point of Supply/Transmission Lines...........................8
Transpower Point of Supply/Transmission Lines...........................9
Marlborough Lines System Assets ................................................11
33kV System..................................................................................11
33kV Sub-transmission Lines ........................................................13
General ......................................................................................13
Network Configuration ...............................................................13
33/11kV Zone Substations ........................................................13
Maintenance ..............................................................................14
33kV Oil Circuit Breakers...............................................................14
Distribution System ........................................................................15
11kV Distribution Network .........................................................15
6.6 and 11kV Overhead Lines...................................................15
11kV SWER Lines.....................................................................16
Marlborough Sounds .................................................................16
East Coast .................................................................................17
Overhead or Underground Construction...................................17
Poles ..........................................................................................18
Pole Mounted Circuit Breakers and Sectionalisers...................18
Oil Switches, Ring main Units ...................................................19
Air Break Switches.....................................................................19
Distribution Transformers ..........................................................20
400V Network ................................................................................20
SCADA System .............................................................................21
Load Control System .....................................................................21
Phone-in devices ...........................................................................21
Fault Locaters ................................................................................21
Information Technology Assets .....................................................22
System Performance........................................................................23
Targets and Actual Performance...................................................24
System Reliability.......................................................................25
System Faults ............................................................................26
Planned Outages.......................................................................27
Targets for 2003 On.......................................................................28
33kV Network Risks...................................................................28
Security of Supply ............................................................................29
Network Service Level Objectives.................................................29
Risk Analysis..................................................................................29
Zone Substation Risks...............................................................30
Improvements............................................................................30
Emergency Response and Contingency Planning .......................30
GAP analysis..................................................................................30
System Enhancement and Development.......................................32
Planning Criteria.............................................................................32
Demand Forecasts ........................................................................32
System Development and Enhancement for 2003 Year ..............36
System Development and Enhancement for 2004 On .................36
Directory

Board of Directors

DS Ferraby -
Chairman
KJ Forrest -
Managing Director

IC Sutherland
DWR Dew
TM Shagin
HJ Stone

Senior Network
Management

KJ Forrest
DA Waters
GJ Hoare
BL Tapp
J Hendriks


Contact Details

Alfred Street
PO Box 144
Blenheim, New Zealand
Telephone +64 3 577 7007
Facsimile +64 3 578 0771
E-mail amp@linesmarl.co.nz
www.marlboroughlines.co.nz Marlborough
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Capital Expenditure Projections.....................................................39
System Maintenance .....................................................................39
2003/04 Maintenance Expenditure................................................40
Appendix A Glossary of Terms....................................................42
Appendix B Network Policies.......................................................44
Appendix C - 33kV Network Diagram ............................................50
Appendix D Reader Survey Form .................................................51




� Copyright 2003 Marlborough Lines Limited. All rights reserved. No part
of this document may be reproduced or transmitted in any form by any
means including without limitation, electronic, photocopying, recording or
otherwise, without the prior written permission of Marlborough Lines.

Disclaimer. This document has been produced to comply with the Electricity
(Information Disclosure) Regulations 1999. The information contained in this
document is provided in good faith and represents Marlborough Lines opinion at
the date of publication. Marlborough Lines does not make any representations,
warranties or undertakings, either express or implied, about the accuracy of the
information provided. This document does not, and is not intended to, create any
legal obligation or duty on Marlborough Lines. To the extent permitted by law, no
liability (whether in negligence or other tort, under statue or in equity) is accepted
by Marlborough Lines Limited by reason of, or in connection with, any statement
made in this document or any actual or purported reliance on it by any party.
Marlborough Lines may alter, at its sole discretion, any of the information provided
in this document. Marlborough

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List of Figures

Figure 1 - Key Stakeholder Relationships............................................................................................................4
Figure 2 - Marlborough Lines Ltd Structure ..........................................................................................................6
Figure 3 Blenheim Substation Load Frequency Duration 2002/03................................................................10
Figure 4 33 kV Line Age Profile ........................................................................................................................13
Figure 5 Zone Substation Age Profile...............................................................................................................13
Figure 6 - 11kV Network Assets ..........................................................................................................................15
Figure 7 11kV Overhead Lines Age Profile......................................................................................................16
Figure 8 - Types of Pole used in Network ...........................................................................................................18
Figure 9 Pole Mounted Recloserrs/Sectionalisers ..........................................................................................19
Figure 10- Pole switches in use ...........................................................................................................................19
Figure 11 - Air Break Switches..............................................................................