Information Disclosure Asset Management Plan Electricity Network 2003 – 2012
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INFORMATION DISCLOSURE ASSET MANAGEMENT PLAN ELECTRICITY NETWORK 2003 – 2012 June 2002 Disclaimer: This document has been prepared to comply with the Electricity (Information Disclosure) Regulations 1999. The information in this document has been prepared in good faith and represents Powerco Limited’s intentions and opinions at the date of issue. Powerco Limited does not give any assurance, either express or implied, about the accuracy of the information or whether Powerco Limited will actually implement the plan or undertake any work mentioned in the documents. None of Powerco Limited, it directors, officers, shareholders or representatives accepts any liability whatsoever by reason of, or in connection with, any information in this document or any actual or purported reliance on it by any person. Powerco Limited may change any information in this document at any time. Section Subject Date of Issue Page TOC Table of Contents 30/06/02 3 Contents 1. Executive Summary.................................................................................................................................................................6 1.1 Purpose of the Plan ...............................................................................................................................................................6 1.2 Period Covered .....................................................................................................................................................................6 1.3 Asset Management Performance Drivers and Stakeholders.................................................................................................6 1.4 Asset Information Systems ....................................................................................................................................................7 1.5 Asset Description ..................................................................................................................................................................7 1.6 Performance Level Objectives ...............................................................................................................................................9 1.7 Lifecycle Maintenance and Development Plans ....................................................................................................................9 1.8 Risk Management................................................................................................................................................................10 1.9 Performance Measurement, Evaluation and Improvement..................................................................................................10 2. Key Definitions .......................................................................................................................................................................11 3. Background and Objectives ..................................................................................................................................................14 3.1 About this Plan.....................................................................................................................................................................14 3.2 Period Covered by the Plan.................................................................................................................................................14 3.3 Interaction with Corporate Planning and Objectives ............................................................................................................14 3.4 Future Review of this Plan...................................................................................................................................................14 3.5 Asset Management Overview and Key Drivers ...................................................................................................................14 3.5.1 Purpose of Asset Management..................................................................................................................................14 3.5.2 Asset Management Performance Drivers..................................................................................................................14 3.5.3 Stakeholder Interests in the Asset Management Process..........................................................................................15 3.6 Responsibilities and Accountabilities for Asset Management ..............................................................................................16 3.6.1 Powerco Company Structure.....................................................................................................................................16 3.6.2 Asset Management Responsibilities at Powerco.......................................................................................................16 3.6.3 Asset Management Reporting....................................................................................................................................17 3.7 Asset Management Information Systems ............................................................................................................................18 3.7.1 Geographical Information System (GIS).....................................................................................................................18 3.7.2 Zone Substation Asset Register ................................................................................................................................18 3.7.3 Maintenance and Works Management System..........................................................................................................18 3.7.4 Ancillary Databases & Financial System....................................................................................................................19 3.7.5 Manual Record Systems ............................................................................................................................................19 3.7.6 Drawing Management System...................................................................................................................................19 3.7.7 Information Integrity and Improvement Actions ..........................................................................................................19 4. Details of the Assets ..............................................................................................................................................................20 4.1 Infrastructure Assets ...........................................................................................................................................................20 4.2 Subtransmission System Configuration...............................................................................................................................20 4.3 Zone Substation Configuration............................................................................................................................................21 4.4 Distribution Network Configuration......................................................................................................................................22 4.4.1 Central Business District Network Configuration .......................................................................................................22 4.4.2 Urban Network Configuration.....................................................................................................................................22 4.4.3 Industrial And Commercial Consumer Network Configuration...................................................................................22 4.4.4 Rural Network Configuration......................................................................................................................................22 4.4.5 Remote Rural Network Configuration ........................................................................................................................23 4.5 Justification for Assets .........................................................................................................................................................23 4.5.1 General......................................................................................................................................................................23 4.5.2 Subtransmission Assets ............................................................................................................................................23 4.5.3 Zone Substation Assets.............................................................................................................................................23 4.5.4 High Voltage Distribution Assets ................................................................................................................................23 4.5.5 Distribution Substation Assets ...................................................................................................................................23 4.5.6 400V Distribution Assets ............................................................................................................................................24 4.5.7 SCADA and Communication Assets..........................................................................................................................24 4.6 The Assets By Category, Age and Condition.......................................................................................................................24