ESD Arrangements & Linked Ship/Shore Systems For …

1 ESD Arrangements & Linked Ship/Shore Systems FoR LiquEFiED GAS CARRiERSWSIL 342c - ESD Systems and Linked ship -Shore 19/4/2009 7:14:27 PMThis book has been released for free by SIGTTO in electronic 342c - ESD Systems and Linked ship -Shore 29/4/2009 7:14:27 PMThis book has been released for free by SIGTTO in electronic Arrangements & Linked Ship/Shore Systems FoR LiquEFiED GAS CARRiERSWSIL 342c - ESD Systems and Linked ship -Shore 39/4/2009 7:14:27 PMThis book has been released for free by SIGTTO in electronic Edition 2009 Copyright of SIGTTO, Bermuda ISBN 978 1 905331 90 1 British Library Cataloguing in Publication Data Society of International Gas Tanker & Terminal Operators Limited.

2 Bermuda Guidelines for Hazard Analysis as an Aid to Management of Safe OperationsNotice of Terms of UseWhile the recommendations and advice given in this guide have been based on information made available to the Society of International Gas Tanker & Terminal Operators (SIGTTO), no responsibility is accepted by SIGTTO, by any person, firm, corporation or organisation who or which has been in any way concerned with the furnishing of information or data, the compilation, publication or any translation, supply or sale of this guide for the accuracy of any information or advice given herein or for any omissions herefrom or for any consequences whatsoever resulting directly or indirectly from compliance with or adoption of any of the recommendations or guidance contained herein even if caused by a failure to exercise reasonable and bound in Great Britain by Bell & Bain Ltd, Glasgow Published in 2009 byWitherby Seamanship International Ltd4 Dunlop Square, LivingstonEdinburgh, EH54 8 SBScotland, UKTel No: +44(0)1506 463 227 Fax No: +44(0)1506 468 999 Email.

3 342c - ESD Systems and Linked ship -Shore 49/4/2009 7:14:28 PMThis book has been released for free by SIGTTO in electronic format. v ESD Arrangements & Linked Ship/Shore Systems FoR LIqUEFIED GAS CARRIERSSIGTTO has produced this guidance note due to members concerns about the different interpretations of the functional requirements for ESD Systems , particularly those differences between the needs of the LNG industry and those of the LPG industry and how these may interact with Linked Ship/Shore shutdown Systems . This document is also intended to promote and encourage more widespread use of Linked ESD Systems at both LNG and LPG terminals, particularly where cargo transfer rates are high or where the cargo being handled is one of the products referred to in Chapter 17 of the 1993 edition of the IGC Code.

4 It is not the intention of this document to contradict any national or international standards or requirements for operational practices at the liquefied gas Ship/Shore of the problems currently experienced are caused by an inadequate understanding of the basic philosophy of the Systems coupled with the ability of new technology, notably PLCs, that facilitate change of functionality without changing the hardware. This is compounded by changes in operation and design of LNG carriers, particularly with regard to gas burning in port and reliquefaction. The IGC Code originates from the mid 1970s and reflects the operational practices and regulatory approach of those times.

5 Therefore, it is not surprising that differing interpretations should arise after 30 , the expansion within the liquefied gas industry has introduced new operators with new ideas. It is important that the lessons learned in the past are passed on document is not intended to provide a detailed technical specification for the design of ESD Systems , but sets out the functional requirements such that a skilled design team can produce a detailed sections are titled as follows:Part 1: Philosophy and General 2: ESD Functions and Associated SystemsPart 3: Linked ESD SystemsPart 4: AppendicesWSIL 342c - ESD Systems and Linked ship -Shore 59/4/2009 7:14:28 PMThis book has been released for free by SIGTTO in electronic 1: Philosophy & General Requirements.

6 11 Introduction ..32 Definitions, Terms and Abbreviations ..43 Emergency Shutdown Systems ..74 Ship/Shore Links ..85 Effect of Non-Core Ship/Shore Services ..96 Emerging Gas Trades ..107 Key Recommendations ..108 References & Further Reading ..11 Part 2: ESD Functions and Associated Safety Systems ..131 Introduction ..152 Cargo Transfer Emergency Shutdown system (ESD-1) ..15 General ..16 ESD Actions ..17 ESD-1 (loading) ..17 ESD-1 (unloading) ..18 ESD-2 (loading or unloading) ..18 Comments on ESD-1 actions ..18 ESD Initiation ..20 Initiation signals ..20 Comments on ESD-1 initiation signals.

7 203 Cargo Tank Overflow Protection ..224 Tank Protection ..245 Gas Burning Safety system ..25 Part 3: Linked ESD Systems ..271 Pneumatic ESD Link system ..292 Electric Ship/Shore Link Systems ..29 Pyle national electric system ..29 ITT-Cannon telephone link system ..30 Miyaki electric system ..30 SIGTTO electric link system ..303 Fibre-Optic Ship/Shore Link system ..314 Radio Ship/Shore Link system ..315 Choice of Ship/Shore Link system ..31 Part 4: Appendices ..33 Appendix A 1993 IGC Code Requirements for an ESD system ..36 Appendix B ESD Processing ..42 Appendix C Testing of Linked ESD Systems for Gas Carriers.

8 43 Appendix D Pneumatic ESD Links ..46 Appendix E Pyle-National Electric Link Connector ..47 Appendix F ITT-Cannon Telephone Connector ..50 Appendix G Miyaki Denki Electric Link H SIGTTO Electric Link system ..52 Appendix I Fibre-optic Link Connector ..54 WSIL 342c - ESD Systems and Linked ship -Shore 69/4/2009 7:14:28 PMThis book has been released for free by SIGTTO in electronic 342c - ESD Systems and Linked ship -Shore 79/4/2009 7:14:28 PMThis book has been released for free by SIGTTO in electronic 1 phiLoSophy & GENERAL REquiREMENTSWSIL 342c - ESD Systems and Linked ship -Shore 19/4/2009 7:14:28 PMThis book has been released for free by SIGTTO in electronic 342c - ESD Systems and Linked ship -Shore 29/4/2009 7:14:28 PMThis book has been released for free by SIGTTO in electronic format.

9 3 Philosophy & General Requirements1 IntroductionThe functions of the cargo Emergency Shutdown (ESD) system are to stop cargo liquid and vapour flow in the event of an emergency and to bring the cargo handling system to a safe, static current edition of the IGC Code [1]1 lays down core requirements for an ESD system . These comprise manual trip points and automatic fire sensors that can initiate remote closure of emergency shutdown valves for shutting down liquid and vapour cargo transfer between ship and shore and require that this emergency trip, when activated, must also stop cargo pumps and compressors.

10 However, these provisions do not necessarily provide adequate protection, particularly against overflow, during other operations involving the transfer of liquid and vapour on board. It must be recognised that operations such as reliquefaction or cargo tank spraying may be routine operations at sea. These deficiencies will be addressed in the new updated IGC Code and are described in this IGC Code has no jurisdiction over activation of ESD Systems at shore installations, but it is recommended that Linked Systems are installed such that activation of an ESD trip on the ship will send an ESD signal to shore and vice , it is important to remember that the scope of the IGC Code effectively ends at the ship s manifold and it has no mandate over the design of the terminal s equipment.