Recommendations for Oil and Chemical Tanker Manifolds and Associated Equipment, First Edition 2017

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Published Date

January 2017


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Recommendations for Oil and Chemical Tanker Manifolds and Associated Equipment, First Edition 2017

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This book will be of interest to anyone who deals with oil and chemical tanker manifolds and their associated equipment and will be of interest to individuals, and teams, designing, constructing and repairing ships.

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A joint publication by the Oil Companies International Marine Forum (OCIMF) and the Chemical Distribution Institute (CDI), Recommendations for Oil and Chemical Tanker Manifolds and Associated Equipment provides clear recommendations and guidance for oil tankers, chemical tankers and dual classed oil/chemical tankers with the aim of achieving improved safety, standardisation and compatibility with terminal facilities.

 

This book contains a significant amount of new tanker industry accepted recommendations on safety and equipment, including additional tonnage categories and recommendations for ship owners.

Contents

Introduction

Glossary

Abbreviations

Bibliography

Note on metric/imperial conversion

Oil and chemical tanker tonnage categories

Section one

Manifold position

    1. Centre of manifold

    2. Distance from the ship’s side

    3. Height of manifold

    4. Spacing

    5. Cargo vapour manifolds

Section two

Working platform and spill containment

    1. Size and position

    2. Spill containment draining

    3. Strength of working platform

    4. Loading arm jacks

    5. Design of working platform

    6. Access to working platform

    7. Elevated working platforms

Section three

Manifold design

    1. Carbon steel manifold

    2. Stainless steel manifold

    3. Assumptions for load calculations

Section four

Cargo and vapour manifold specification and fittings

    1. Valves

    2. Valve actuators

    3. Distance pieces

    4. Spool pieces and reducers

    5. Blank flanges

Section five

Hose support at ship’s side

    1. Curved plate or pipe hose support

    2. Hose support position

    3. Hose support strength

Section six

Bunker connections and other connections

    1. Number of connections

    2. Size of connections and reducers for oil bunkers

    3. Size of connections and reducers for LNG bunkers

    4. Strength

    5. Location

    6. Oil spill containment

    7. LNG spill containment and protection

    8. Other connections

Section seven

Lighting

Section eight

Lifting equipment

    1. Safe working loads

    2. Area of operation of lifting equipment

    3. Operating criteria for lifting equipment

    4. Personnel transfer by crane (man-riding)

Section nine

Deck fittings to facilitate hose handling at buoy moorings

    1. Cruciform bollards

    2. Bitts

    3. Fairleads

    4. Deck rings or lugs

    5. Arrangements for ship to ship transfer

Section ten

Connectors for ship/shore emergency shutdown system

Section eleven

Standard manifold arrangements

    1. Category ‘A, B, C’ Standard manifold arrangement, including vapour lines,

for vessels up to 25,000 sdwt

    1. Category ‘D’ Standard manifold arrangement, including vapour lines,

for 25,001 to 60,000 sdwt vessels

    1. Category ‘E & F’ Standard manifold arrangement, including vapour lines,

for 60,001 to 160,000 sdwt vessels

    1. Category ‘G’ Standard manifold arrangement, including vapour lines,

for vessels over 160,000 sdwt

Typical manifold arrangement for a tiered chemical tanker

The Oil Companies International Marine Forum (OCIMF) first published Standards for Oil Tanker Manifolds and Associated Equipment in 1971. The guidance was subsequently revised in a second edition, published in 1975, primarily to take account of changes in practice reflecting the increased usage of hard arms, the introduction of large diameter floating hoses at some Single Point Moorings (SPMs) and the increased frequency of lightering operations. Further revisions in 1981 and 1991 contained expanded recommendations on lifting equipment and vapour manifolds respectively as well as a new title Recommendations for Oil Tanker Manifolds and Associated Equipment.

This new publication, the first edition of Recommendations for Oil and Chemical Tanker Manifolds and Associated Equipment supersedes the earlier titles. It takes account of the many years of industry experience with the previous guidance and builds on the earlier recommendations. The following summarises the more significant changes that have been introduced:

• This is now a joint publication with the Chemical Distribution Institute (CDI), who have provided valuable input to support the development of recommendations for chemical tankers.

• Guidance has been expanded to include chemical tankers and dual classed oil/chemical tankers with the aim of achieving improved compatibility with shore facilities, particularly when these vessels trade to oil terminals.

• The four tonnage categories in the fourth edition of Recommendations for Oil Tanker Manifolds and Associated Equipment have been increased to seven. The new table is on page x. The new categories are:

- Two new smaller tonnage categories. These address ships of less than 16,000 tonnes deadweight. The new categories are:

• Category A which covers 5,000 tonnes deadweight or less.

• Category B which covers 5,001 to 16,000 tonnes deadweight.

- The previous tonnage category C, which covered ships of from 60,001 to 160,000 tonnes deadweight, has been divided into two categories. The new categories are:

• Category E which covers 60,001 to 120,000 tonnes deadweight.

• Category F which covers 120,001 to 160,000.

 

Ship Tonnage Category Summer Deadweight

(tonnes) (sdwt)

1991 2017

A 16,000 to 25,000 5,000 or less

B 25,001 to 60,000 5,001 to 16,000

C 60,001 to 160,000 16,001 to 25,000

D Over 160,000 25,001 to 60,000

E 60,001 to 120,000

F 120,001 to 160,000

G Over 160,000

Table 0.1: Comparison table

• New recommendations for ship owners to install higher capacity hose handling cranes and associated lifting equipment for cargo hose handling at offshore marine terminals on new ships contracted on or after 1 January 2019 has been introduced (see Oil and Chemical tanker tonnage categories on page ix and table 9.1). These recommendations are based on a study undertaken by OCIMF, published in OCIMF’s information paper A Study into Crane Loads Associated with Hose Handling at Offshore Terminals, which is available to download from www.ocimf.org.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OCIMF: enquiries@ocimf.org technicaladvisers@ocimf.org

CDI: chemdist@cdim.org

 

• New recommendations aimed at addressing the risks associated with access and working at a height are included. This is to address the development of tankers with exposed deck framing which has resulted in some ships having elevated manifolds and working platforms at a significant height above the deck. Such arrangements pose safety issues.

• Changes to recommendations on the position of vapour manifolds. Industry experience indicates that they are best located inside the bunker line(s), adjacent to the outer cargo lines and the recommendations now recognise this. Previous guidance recommended their retro-fitting outside the bunker line(s).

• New methods of calculating manifold loads to more accurately the reflect the increased frequency of offshore operations and to specify the recommended materials used (section 3).

• New guidance for shipyards and vessel operators on where to install LNG for fuel flanges at the vessel manifold.

With the expansion of the recommendations to include chemical tankers and vessels of less than 16,000 tonnes deadweight, it is recommended that the guidance will be adopted for new builds contracted on or after 1 January 2019. The revised recommendations contained in this book are not intended to require modifications to existing manifold arrangements on vessels in service.

This is a book of recommendations and is not a book of rules. It contains tanker industry accepted recommendations on safety and equipment., Where more stringent international, national, or local regulations apply, they must always take precedence.

This publication supersedes the 4th edition of Recommendations for Oil Tanker Manifolds and Associated Equipment published in 1991.

OCIMF and CDI welcome suggestions for improvement that can be considered for inclusion in future editions. They would also like to thank INTERTANKO for the assistance they provided during the writing process.

The Oil Companies International Marine Forum (OCIMF) is a voluntary association of oil companies with an interest in the shipment and terminalling of crude oil, oil products, petrochemicals and gas.

OCIMF's mission is to be the foremost authority on the safe and environmentally responsible operation of oil tankers, terminals and offshore support vessels, promoting continuous improvement in standards of design and operation.

The CDI is a chemical industry organization, incorporated under the law of the Netherlands as the Stichting Chemical Distribution Institute (CDI) and operates as a non-profit making foundation.
CDI is managed by a Board of Directors consisting of seven individuals nominated by the participating chemical companies. The Board of Directors establishes policy and is responsible for overall affairs of the foundation. Individual Executive Boards are elected to oversee and direct the staff managing day to day activities for the Marine, Terminals and Marine Packed Cargo Schemes.

Title: Recommendations for Oil and Chemical Tanker Manifolds and Associated Equipment, First Edition 2017
Number of Pages: 66
Product Code: WS1508K
ISBN: ISBN 13: 978-1-85609-741-3 (9781856097413), ISBN 10: 1-85609-741-2 (1856097412)
Published Date: January 2017
Binding Format: Hardback
Book Height: 302 mm
Book Width: 216 mm
Book Spine: 10 mm
Weight: 0.64 kg
Author: Oil Companies International Marine Forum

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