Section 13 Ventilators, air pipes and discharges
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Ships for Service on the Great Lakes and River St. Lawrence, July 2022 - Chapter 4 Ship Structures - Section 13 Ventilators, air pipes and discharges

Section 13 Ventilators, air pipes and discharges

Parent topic: Chapter 4 Ship Structures

13.1 General

13.1.1 These requirements are to conform with the relevant National Authority Load Line Regulations.

13.2 Protection

13.2.1 In all cargo holds and deck areas where mechanical damage is likely, all air and sounding pipes, scuppers and discharges, including their valves, controls and indicators, are to be well protected. This protection is to be of steel or other equivalent material.

13.3 Ventilators

13.3.1 Special care is to be taken in the design and positioning of ventilator openings and coamings, particularly in the region on the strength deck in way of the cargo hatch openings.

13.3.2 Ventilators from deep tanks and tunnels passing through 'tween decks or superstructures are to have scantlings suitable for withstanding the pressures to which they may be subjected and are to be made watertight.

13.3.3 The requirements of Pt 3, Ch 12, 2.2 Coamings of the Rules for Ships are to be complied with, except the coaming height for ventilators in Position 1 and 2 shall be 760 mm and 600 mm, respectively.

13.3.4 All ventilator openings are to be provided with efficient, permanently attached, weathertight closing appliances unless, in Position 1 and 2, the coaming height exceeds 3,8 m and 1,8 m above the deck, respectively.

13.4 Air pipes

13.4.1 The requirements of Pt 3, Ch 12, 3 Air and sounding pipes of the Rules for Ships are to be complied with, except the coaming height for air pipes in Position 1 and 2 shall be 760 mm and 300 mm respectively.

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.