Section 3 Hoses
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Construction & Classification of Submersibles & Diving Systems, July 2022 - Part 5 Main and Auxiliary Machinery, Systems and Equipment - Chapter 5 Diving Umbilicals - Section 3 Hoses

Section 3 Hoses

Parent topic: Chapter 5 Diving Umbilicals

3.1 General

3.1.1 All hoses forming part of an umbilical are to be of approved type and tested in accordance with Pt 5, Ch 5, 4 Hose Approval Tests as applicable, and suitably marked for identification purposes. Any couplings should be made of corrosion resistant material.

3.1.2 Where pneumatic testing is specified in the following Sections, due consideration should be given to the stored energy in the event of a hose failure and means of protecting personnel provided accordingly.

3.1.3 The manufacturer’s certification is to be submitted for consideration in respect of Pt 5, Ch 5, 3.3 Hoses for breathing gases and Pt 5, Ch 5, 3.4 Hoses for hot water.

3.2 Construction

3.2.1 Hoses are to incorporate closely woven single or multi-braided reinforcement with properly attached end fittings of crimped or similar type and are to be suitable for their intended service.

3.3 Hoses for breathing gases

3.3.1 The hose material should be oil resistant and at the maximum design pressure and within a temperature range of minus 40 to plus 60°C, should not:
  1. Generate noxious or toxic vapours see HSE EH75 for determination of allowable limits.
  2. Be affected by exposure to the gases.

3.4 Hoses for hot water

3.4.1 The hose material should have no chemical reaction with water at a temperature of 99°C.

Copyright 2022 Clasifications Register Group Limited, International Maritime Organization, International Labour Organization or Maritime and Coastguard Agency. All rights reserved. Clasifications Register Group Limited, its affiliates and subsidiaries and their respective officers, employees or agents are, individually and collectively, referred to in this clause as 'Clasifications Register'. Clasifications Register assumes no responsibility and shall not be liable to any person for any loss, damage or expense caused by reliance on the information or advice in this document or howsoever provided, unless that person has signed a contract with the relevant Clasifications Register entity for the provision of this information or advice and in that case any responsibility or liability is exclusively on the terms and conditions set out in that contract.