Attachment 12.11 Safety Case Atco 2020‐24 Plan
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ATTACHMENT 12.11 SAFETY CASE ATCO 2020‐24 PLAN EIM # 95958545 PUBLIC 31 August 2018 GAS DISTRIBUTION SYSTEM SAFETY CASE Document ID: TCO PL00005 Revision: 6 Date: 01/12/2017 Authorisation Title Name Date Owner Manager Technical Compliance Stuart Jobling 01/12/2017 General Manager Asset and Engineering Reviewer Stevan Green 01/12/2017 Innovation Reviewer General Manager Operations Russell Godsall 01/12/2017 Reviewer General Manager Construction Russell James 01/12/2017 Approver President ATCO Gas Australia Pty Ltd Pat Donovan 01/12/2017 This document is controlled within the Enterprise Information Management (EIM) System. Please refer to the electronic version on EIM to confirm you have the latest version. GAS DISTRIBUTION SYSTEM SAFETY CASE THIS PAGE HAS BEEN LEFT INTENTIONALLY BLANK FOR THE PURPOSE OF DOUBLE-SIDED PRINTING Document: TCO PL00005 Page 2 of 167 WARNING: UNAUTHORISED ACCESS OR DEALING Revision: 6 WITH THIS DOCUMENT IS STRICTLY PROHIBITED Date: 01/12/2017 GAS DISTRIBUTION SYSTEM SAFETY CASE Document History Rev No Date Amended by Details of Amendment 0 19/07/2001 G. Lukies Issued for submission to EnergySafety. 1 29/07/2005 J. Kong Major amendment for resubmission to EnergySafety. Revised to incorporate EnergySafety comments and to reflect new Alinta 2 05/04/2007 S. de Grauw Asset Management structure (supersedes ANS-RPT-22002). Revised and restructured to incorporate EnergySafety comments and to 3 23/03/2011 J. Galey reflect internalised WAGN organisational structure. Revised to incorporate recommended revisions as defined in the Preliminary 4 13/07/2011 J. Galey Certificate audit report and conditions specified in EnergySafety’s approval. 5 13/10/2017 E Ee / Revision and restructure to reflect the new ownership by ATCO Gas S Jobling Australia and changes to; organisational structures; roles and responsibilities; procedural changes; document referencing; Kalgoorlie Odorant Facility; asset retirement; service regulators; marker tape, tracer wire and pipeline markers signs; risk framework; Section 4 Formal safety Assessment describes intermediate and higher risks and controls. 6 01/12/2017 E Ee / S Revised to incorporate EnergySafety comments Jobling Distribution List Title Name Type President ATCO Gas Australia Pty Ltd P. Donovan Paper copy Manager Technical Compliance S. Jobling Paper copy General Manager Operations R. Godsall Paper copy General Manager Asset and Engineering Innovation S. Green Paper copy General Manager Construction R. James Paper Copy J. Nordmann M. McCarthy M Marshall Supervisors, Regional Depots S. Howard Paper copy P. Najar A Buchanan M. Sheaf Director Energy Safety K. Bowron Paper copy ATCO Gas Australia employees with EIM access N / A Electronic via EIM Paper copy available at ATCO ATCO Gas Australia personnel without EIM access N / A Gas Australia depots ATCO Gas Australia Pty Ltd Gate 1, 81 Prinsep Road, Jandakot WA 6164 PO Box 3006, Success WA 6964 Other products referred to in this document are registered trademarks of their respective companies, and may carry copyright notices. © Copyright ATCO Gas Australia Pty Ltd, 2017. All rights reserved Document: TCO PL00005 Page 3 of 167 WARNING: UNAUTHORISED ACCESS OR DEALING Revision: 6 WITH THIS DOCUMENT IS STRICTLY PROHIBITED Date: 01/12/2017 GAS DISTRIBUTION SYSTEM SAFETY CASE THIS PAGE HAS BEEN LEFT INTENTIONALLY BLANK FOR THE PURPOSE OF DOUBLE SIDED PRINTING Document: TCO PL00005 Page 4 of 167 WARNING: UNAUTHORISED ACCESS OR DEALING Revision: 6 WITH THIS DOCUMENT IS STRICTLY PROHIBITED Date: 01/12/2017 GAS DISTRIBUTION SYSTEM SAFETY CASE GAS DISTRIBUTION SYSTEM SAFETY CASE ATCO Gas Australia Safety Case Corporate Endorsement ATCO Gas Australia Pty Ltd , formerly known as WA Gas Networks Pty Ltd (WAGN) prepared a Gas Distribution System (GDS) Safety Case under the provisions of Part 4, Division 3 of the Gas Standards (Gas Supply and System Safety) Regulations 2000 (GSSS Regulations) made under the requirements of the Gas Standards Act 1972. The GDS covered by the Safety Case is as defined in Gas Distribution Licence 8 (GDL8) issued by the Economic Regulation Authority to ATCO Gas Australia under the Energy Coordination Act 1994. The ATCO Gas Australia GDS Safety Case was accepted to form the prime reference to meet safety and technical compliance of the ATCO GAS AUSTRALIA GDS by the Director of Energy Safety on 28 July 2011 under the provisions of Regulation 34 of the GSSS Regulations. The ATCO Gas Australia GDS Safety Case provides a road map for the systems ATCO GAS AUSTRALIA has put in place for the safe operation of the ATCO Gas Australia GDS, including those for design, construction, operation, maintenance, training and supervision to manage the risks arising from hazards that have been identified as having the potential to result in an incident on the ATCO Gas Australia GDS. The Safety Case also describes the risk management systems ATCO Gas Australia has put in place to continue to identify, assess and take action to treat risks throughout the life of the ATCO Gas Australia GDS. The measurement and reporting of compliance with the ATCO Gas Australia GDS Safety Case is to be managed in accordance with the Compliance Policy. It is therefore imperative that the ATCO Gas Australia GDS Safety Case be complied with at all times. I support the contents of the ATCO Gas Australia GDS Safety Case. As President and a director of the licensee of the network, ATCO Gas Australia Pty Ltd, the responsibilities called for by ATCO Gas Australia are accepted, in compliance with the requirements of the Regulator, the Department of Mines, Industry Regulation and Safety, EnergySafety. Pat Donovan President & Director ATCO Gas Australia Pty Ltd (ABN 90 089 531 975) Level 12, 2 Mill Street, Perth, WA, 6000 Document: TCO PL00005 Page 5 of 167 WARNING: UNAUTHORISED ACCESS OR DEALING Revision: 6 WITH THIS DOCUMENT IS STRICTLY PROHIBITED Date: 01/12/2017 GAS DISTRIBUTION SYSTEM SAFETY CASE THIS PAGE HAS BEEN LEFT INTENTIONALLY BLANK FOR THE PURPOSE OF DOUBLE-SIDED PRINTING Document: TCO PL00005 Page 6 of 167 WARNING: UNAUTHORISED ACCESS OR DEALING Revision: 6 WITH THIS DOCUMENT IS STRICTLY PROHIBITED Date: 01/12/2017 GAS DISTRIBUTION SYSTEM SAFETY CASE ATCO Gas Australia Gas Distribution System Safety Case Contact Details Business Trading Name and Licensee: ATCO Gas Australia Pty Ltd ABN 90 089 531 975 Gate 1, 81 Prinsep Road JANDAKOT WA 6164 PO Box 3006 SUCCESS WA 6964 ATCO Gas Australia Safety Case contact: Manager Technical Compliance ATCO Gas Australia Gate 1, 81 Prinsep Road JANDAKOT WA 6164 Document: TCO PL00005 Page 7 of 167 WARNING: UNAUTHORISED ACCESS OR DEALING Revision: 6 WITH THIS DOCUMENT IS STRICTLY PROHIBITED Date: 01/12/2017 GAS DISTRIBUTION SYSTEM SAFETY CASE THIS PAGE HAS BEEN LEFT INTENTIONALLY BLANK FOR THE PURPOSE OF DOUBLE-SIDED PRINTING Document: TCO PL00005 Page 8 of 167 WARNING: UNAUTHORISED ACCESS OR DEALING Revision: 6 WITH THIS DOCUMENT IS STRICTLY PROHIBITED Date: 01/12/2017 GAS DISTRIBUTION SYSTEM SAFETY CASE TABLE OF CONTENTS 1. INTRODUCTION ...................................................................................................... 15 1.1 LEGISLATIVE PRECEDENCE ......................................................................................... 16 1.2 HISTORY OF THE SAFETY CASE ................................................................................... 16 1.3 STRUCTURE OF SAFETY CASE ..................................................................................... 16 1.4 ACCOUNTABILITY AND RESPONSIBILITY ........................................................................ 17 1.5 PURPOSE OF THE SAFETY CASE .................................................................................. 17 1.6 SCOPE OF SAFETY CASE ............................................................................................ 17 1.7 DISTRIBUTION AND DOCUMENT CONTROL .................................................................... 18 1.8 SAFETY CASE REVISION .............................................................................................. 18 1.9 RELATIONSHIP BETWEEN SAFETY CASE AND OTHER STATUTORY BODIES AND OBLIGATIONS ............................................................................................................. 19 1.10 DEFINITIONS ............................................................................................................... 20 1.10.1 Abbreviations ............................................................................................................ 20 1.10.2 Terms ....................................................................................................................... 26 1.11 INTERPRETATION ........................................................................................................ 31 2. ATCO GAS AUSTRALIA FACILITY DESCRIPTION ............................................... 33 2.1 ATCO GAS AUSTRALIA GAS DISTRIBUTION SYSTEM (GDS) .......................................... 33 2.1.1 Goldfields-Esperance Supply Area (Kalgoorlie Distribution Network) ........................ 36 2.1.2 Great Southern Supply Area (Albany Distribution Network) ...................................... 36 2.1.3 Coastal Supply Area ................................................................................................. 36 2.2 ATCO GAS AUSTRALIA GDS ASSETS .......................................................................... 37 2.2.1 Pipelines ..................................................................................................................