Recommendations for Liquefied Gas Carrier Manifolds, 2nd Edition 2018

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ISBN 9781856097697
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These recommendations are for liquefied petroleum gas (LPG) carriers and liquefied natural gas (LNG) carriers. For the purposes of this document, the term LPG carrier refers to liquefied gas cargoes carried between the temperature range of 0°C to -104°C. These recommendations do not apply to existing ships, and there is no suggestion that existing ships should be altered.

It is recognised that some new gas carrier designs may not be able to conform to all of the recommendations in this document, however, this document is intended to serve as a starting point with a view to minimising differences as much as possible.


1. Introduction

1.1 Scope

1.2 Size Categories

2. Manifold Position

2.1 Manifold – LPG

2.2 Manifold – LNG

3. Protection from Cargo Spill

3.1 Deck Protection

3.2 Coaming Requirements

3.3 Drip Trays

3.4 Gratings

3.5 Drainage – LPG

3.6 Drainage – LNG

3.7 Water Curtains for LNG Carriers

4. Manifold Design

4.1 Carbon Steel Manifold

4.2 Stainless Steel Manifold

4.3 Assumptions used for Load Calculations

5. Manifold Specification and Fittings

5.1 Manifold Flanges

5.2 Presentation Flanges

5.3 Marking of Manifolds

5.4 Distance Pieces

5.5 Reducers and Spool Pieces

6. Additional Requirements

6.1 Water and other Connections

6.2 Manifold Area Illumination

6.3 Lifting Equipment and Cargo Hose Support

6.4 LPG Vessels Involved in Floating Hose Transfers

6.5 Access and Exits from the Manifold Area

6.6 Access during Cargo Transfer

7. Bunker Manifolds

7.1 Number and Arrangement

7.2 Size and Location of Bunker Manifold

7.3 Reducers and Spool Pieces for Bunkering

7.4 Strength

7.5 Oil Spill Containment

7.6 LNG Spill Containment and Protection

7.7 Oil Bunker Hose Saddle

7.8 Other Connections


Annex 1 – Manifold Strainers Annex 2 – Glossary of Terms and Abbreviations

Annex 3 – References



Title: Recommendations for Liquefied Gas Carrier Manifolds
Edition: 2nd Ed 2018
Number of Pages: 57
Product Code: WS1618K
ISBN: ISBN 13: 978-1-85609-769-7 (9781856097697), ISBN 10: 1-85609-769-2 (1856097692)
Published Date: March 2018
Binding Format: Hardback
Book Height: 297 mm
Book Width: 210 mm
Book Spine: 10 mm
Weight: 0.60 kg

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