Section 1 Introduction
Clasification Society 2024 - Version 9.40
Clasifications Register Guidance Information - Guidance Notes for Collision Assessment fot the Location of Low-flashpoint Fuel Tanks July 2016 - Chapter 1 Guidance Notes for Collision Assessment for the Location of Low-flashpoint Fuel Tanks - Section 1 Introduction

Section 1 Introduction

Parent topic: Chapter 1 Guidance Notes for Collision Assessment for the Location of Low-flashpoint Fuel Tanks

1.1 Application

1.1.1 In accordance with the IGF Code - International Code of Safety for Ships Using Gases or Other Low-Flashpoint Fuels (IGF Code) storage tanks that contain low-flashpoint fuel for fuelling engines (and/or other consumers) are to be located at a minimum distance of B/5 or 11,5 m, whichever is less, from the side of the ship, see Lloyd’s Register Rules and Regulations for the Classification of Ships using Gases or other Low-flashpoint Fuels, July 2022 (commonly referred to as the Rules for Gas Fuelled Ships), Pt A-1, Sec 5, 3.3. Where this prescriptive requirement cannot be satisfied, the Rules, in accordance with the IGF Code, allow consideration of a ‘reduced distance’ by use of a probabilistic calculation; see Pt A-1, Sec 5, 3.4 of the Rules and Regulations for the Classification of Ships using Gases or other Low-flashpoint Fuels, July 2022.footnote

1.1.2 Where space is limited, both the prescriptive and probabilistic requirements on fuel tank location can be difficult to meet. However, if the hull structure in way of the tank is strengthened, higher collision resistance is provided. This can reduce damage penetration from a striking ship and may allow a ‘reduced distance’ to be considered, subject to the agreement of Lloyd’s Register and the National Administration, compared with the prescriptive requirement and the probabilistic calculation.

1.1.3 Obtaining a ‘reduced distance’ by strengthening the hull may be permissible provided equivalent protection of the fuel tank can be demonstrated, see Pt A-1, Sec 5, 3.3.8 and 3.4.8 of the Rules and Regulations for the Classification of Ships using Gases or other Low-flashpoint Fuels, July 2022.

1.1.4 This document details a procedure to assess equivalent protection of the fuel tank by analysis of collision resistance of the hull in way of the fuel tank which would generally be acceptable to Lloyd’s Register.

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