2.3 Vapour line connections
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC/Circular.585 – Standards for Vapour Emission Control Systems – (Adopted on 16 April 1992) - Annex - Standards for Vapour Emission Control Systems - 2 Tankers - 2.3 Vapour line connections

2.3 Vapour line connections

  2.3.1 An isolation valve capable of manual operation should be provided at each tanker vapour connection. The operating position of this valve should be readily determined visually.

  2.3.2 The end of each vapour collection pipe or vapour collection hose should be readily identifiable to prevent misconnection.

  2.3.3 In order to prevent the possible misconnection of the vapour manifold to a shoreside terminal liquid loading line, each tanker vapour connection flange should conform to the applicable industry standardfootnote. This provision is applicable regardless of the size of the vessel.

  2.3.4 Each vapour collection hose should meet the following:

  • .1 be suitable for the service;

  • .2 be electrically continuous; and

  • .3 have an extra hole in each flange in accordance with the applicable industry standardfootnote.


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.