Ship/Shore Interface for LPG/Chemical Gas Carriers and Terminals

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Media Hardcopy
SKU 9781856097703
Publisher Witherby Seamanship International
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This publication describes risk assessment and hazard identification techniques that can be applied by LPG/chemical gas shipping staff and terminal operators. It identifies the principal risks at the ship/shore interface, including vessel arrival and departure, loading and discharge operations, gas detection, cargo sampling, release of vapour and exposure to hazardous products.




Introduction, Purpose and Scope

1. Hazards and Risk Management

1.1 Introduction

1.2 The ‘Bowtie Method’ of Risk Assessment and Management

1.3 Hazards, Threats and Barriers Identified

2. Operational Readiness

2.1 The Terminal

2.2 The Ship

3. Pre-Arrival

4. Arrival Alongside Prior to Cargo Operations Commencing

4.1 Pre-Cargo Operations Meeting

4.2 Safe Access4.3 Emergency Procedures

4.4 Mooring

4.5 Simultaneous Operations (‘SimOps’)

5. Cargo Operations (General)

5.1 Cargo Emergency Shutdown (ESD) System and Ship/Shore Link (SSL)

5.2 Communications

5.3 Manifolds and Transfer Systems

5.4 Awareness of Surge Pressures

5.5 Gas Detection On Board an LPG Carrier

5.6 Gas Detection at the Terminal

5.7 Cargo Sampling

5.8 Cargo Monitoring Instruments - Checks Prior to and During Cargo Transfers

5.9 Warm Cargoes

5.10 Reliquefaction and Tank Pressure Management

5.11 Hydrates

5.12 Incondensibles

5.13 Cargo Equipment Temperature, Flow and Pressure Limitations

5.14 Manifold Connection

5.15 Insulating against Static Electricity

5.16 Vapour Return

6. Cargo Loading

6.1 Gassing-Up

6.2 Cool Down

6.3 Preliminary Procedures before Loading

6.4 Management of Tank Pressure During Loading

6.5 Commencement of Loading

6.6 The use of Automatic Shutdown during Topping Off

6.7 Operation of the Reliquefaction Plant during Bulk Loading of LPG

6.8 Cargo Tank Loading Limits

6.9 Odourisation of LPG

6.10 Inhibitio

7. Cargo Discharge

7.1 Discharge Temperature and Pressure

7.2 Blending at the Terminal


8. LPG Carrier Departure

8.1 Manifold Draining, Purging and Disconnection Procedure

8.2 Disconnection

8.3 Preparation Prior to Unmooring

9. Release of Vapour

10. Cold Spill

11. Asphyxiation and Toxicity

Annexes and Back Up Data

Annex A – Competencies & Training

Annex B – Properties of Chemical and Liquefied Petroleum Gases

Annex C – LPG/Chemical Ship Types

Annex D – Bowtie Diagrams


About The Author

The Society of International Gas Tanker and Terminal Operators (SIGTTO) is a non-profit making organisation dedicated to protect and promote the mutual interests of its members in matters related to the safe and reliable operation of gas tankers and terminals within a sound environment. The Society was founded in 1979 and was granted consultative status at the International Maritime Organization in November 1983.


Title: Ship/Shore Interface for LPG/Chemical Gas Carriers and Terminals
Edition: 1st Ed 18
Number of Pages: 138
Product Code: WS1568K
ISBN: ISBN 13: 978-1-85609-770-3 (9781856097703), ISBN 10: 1-85609-770-6 (1856097706)
Published Date: July 2018
Binding Format: Hardback
Book Height: 297 mm
Book Width: 210 mm
Book Spine: 10 mm
Weight: 1.00 kg
Author: SIGTTO

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