Transend - Appendix 5 Renewal capital expenditure - Australian ...

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Renewal Capital Expenditure TNM-GR-809-0929 Issue 1.0, January 2009 CONTACT This document is the responsibility of the Asset Strategy & Planning Group, Transend Networks Pty Ltd, ABN 57 082 586 892. Please contact Transend’s Manager Asset Strategy & Planning Group with any queries or suggestions. REVIEW DATE This document is due for review - Not Applicable. RESPONSIBILITIES Implementation All Transend staff and contractors. Audit Periodic audits to establish conformance with this document will be conducted by Transend’s Asset Strategy & Planning Group. Compliance All Group Managers Document Management Asset Strategy & Planning Group Revenue Reset Project MINIMUM REQUIREMENTS The requirements set out in Transend's documents are minimum requirements that must be complied with by Transend staff and contractors, including designers and other consultants. The user is expected to implement any practices which may not be stated but which can reasonably be regarded as good practices relevant to the objective of this document without non-compliance with the specific requirement of this document. Transend expects the users to improve upon these minimum requirements where possible and to integrate these improvements into their procedures and quality assurance plans. Page 2 of 28 © Transend Networks Pty Ltd UNCONTROLLED WHEN PRINTED
CONTENTS Renewal Capital Expenditure TNM-GR-809-0929 Issue 1.0, January 2009 EXECUTIVE SUMMARY 5 1 SECTION A: 110 KV SUBSTATION REDEVELOPMENT PROJECTS 6 1.1 Background 6 1.2 Transend revenue proposal and Nuttall Consulting review 8 1.3 Revised revenue proposal 8 1.3.1 Risk review and transmission circuit criticality 9 1.3.2 Impact on reliability of electricity supply 9 1.3.3 Project justification 9 1.4 110 kV Circuit breaker replacement program overview 9 1.5 110 kV Substation redevelopments overview 12 1.5.1 Transmission circuit criticality 13 1.6 Investment drivers 14 1.6.1 Supply transformers 14 1.6.2 Circuit breakers 15 1.6.3 Instrument transformers 15 1.6.4 Disconnectors and post insulators 18 1.6.5 Protection and control 20 1.7 Conclusion 20 1.8 Section A – List of Attachments 20 2 SECTION B: FARRELL AND NEW NORFOLK SUBSTATIONS SECONDARY SYSTEM REPLACEMENTS PROJECTS 22 2.1 Background 22 2.2 Revised proposal 22 2.2.1 Farrell Substation secondary systems replacements project 22 2.2.2 New Norfolk Substation 110 kV protection replacements project 23 2.3 Conclusion 24 2.4 Section B - List of Attachments 24 3 SECTION C: BURNIE-WARATAH 110 KV TRANSMISSION LINE WOOD POLE REPLACEMENT PROJECT 25 3.1 Background 25 3.2 Revised Proposal 25 3.2.1 Requirements for pole replacement 25 3.2.2 Timing of pole replacement 26 3.2.3 Correction of typographical error 26 3.2.4 Conclusion 26 3.3 List of Attachments 27 ATTACHMENT A1 – 110 KV SUBSTATION TRANSMISSION CIRCUIT ASSET REPLACEMENT REQUIREMENTS 28 © Transend Networks Pty Ltd Page 3 of 28 UNCONTROLLED WHEN PRINTED
Page 1: APPENDIX 5 Transend, Renewal capita
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Page 14 and 15: Figure 4 - Overview of the Reyrolle
Page 16 and 17: Table 3 - Circuit criticality ratin
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0BInvestment Evaluation Summary TNM
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CONTENTS 0BInvestment Evaluation Su
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4.8 BUS CONDUCTOR AND FITTINGS 0BIn
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6 BENEFITS The direct benefits of r
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7.2.3 DRAWBACKS The option has the
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Figure 2 - Option 3: single line di
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This option includes: � installin
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INVESTMENT EVALUATION SUMMARY 0BInv
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1 BACKGROUND 0BInvestment Evaluatio
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4.1 CIRCUIT BREAKERS 0BInvestment E
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� reduced burden on spare parts m
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� replacement of the 110 kV Meado
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� reduced burden on spare parts m
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4.2 VOLTAGE TRANSFORMERS The 110 kV
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4.3 CURRENT TRANSFORMERS 0BInvestme
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The drawbacks for this option are t
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INVESTMENT EVALUATION SUMMARY 0BInv
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4.1.2 TUNGATINAH SUBSTATION 0BInves
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4.3.2 TUNGATINAH SUBSTATION The 110
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Tarraleah-New Norfolk No. 1 110 kV
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� the possibility of a 220 kV con
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Table 2 - Summary of Transend’s c
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3.2.2 110 KV BUS BAR PROTECTION SCH
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5. CUSTOMER CONSULTATION 0BInvestme
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Table 3 - Summary of NPV cost analy
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� loss of back-up protection func
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INVESTMENT EVALUATION SUMMARY TITLE
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INVESTMENT EVALUATION SUMMARY TITLE
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Burnie-Waratah 110 kV Transmission
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CONTENTS Burnie-Waratah 110 kV Tran
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1 BACKGROUND Burnie-Waratah 110 kV
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2.3 MAINTENANCE Burnie-Waratah 110
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Burnie-Waratah 110 kV Transmission
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