Section 10 Air and sounding pipes
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Inland Waterways Ships, July 2022 - Part 3 Ship Structures (General) - Chapter 11 Closing Arrangements to Openings in Shell and Deck, Ventilators, Air Pipes, Sounding Pipes and Discharges - Section 10 Air and sounding pipes

Section 10 Air and sounding pipes

Parent topic: Chapter 11 Closing Arrangements to Openings in Shell and Deck, Ventilators, Air Pipes, Sounding Pipes and Discharges

10.1 General

10.1.1 Air and sounding pipes are to comply with the requirements of Pt 5, Ch 11, 10 Air and sounding pipes. Name plates are to be affixed near their upper ends.

10.1.2 Striking plates of suitable thickness or their equivalent means, are to be fitted under all sounding pipes.

10.1.3 Air and sounding pipes leading through cargo containment areas or other spaces where mechanical damage is likely to occur, are to be well protected.

10.2 Height of air pipes

10.2.1 The height of air pipes from the upper surface of exposed decks to a point where water may have access below is normally to be not less than 300 mm, but the height above the load waterline in any loading condition is to be not less than 500 mm.

10.2.2 A lower height may be approved in cases where this is essential for the working of the ship, provided efficient means are fitted against ingress of water into the tank under all service conditions.

10.2.3 For air pipes on ships carrying dangerous goods, see Pt 4, Ch 1 Dry Cargo Ships andPt 4, Ch 4 General Requirements For Tankers Carrying Dangerous Liquids in Bulk respectively.

10.3 Closing appliances

10.3.1 Openings of air pipes of standard height as in Pt 3, Ch 11, 10.2 Height of air pipes 10.2.1 are to be provided with spray tight arrangements, such as a bend in the upper part of the pipe or equivalent.

10.3.2 Sounding pipes are to be provided with permanently attached efficient means of closing to prevent the free entry of water.

10.3.3 Where the closing appliances on air pipes are not of an automatic type, provision is to be made for pressure/vacuum relieving.

10.3.4 The open ends of air pipes to fuel oil tanks are to be situated where no danger will be incurred from issuing oil or vapour when the tank is being filled and each opening is to be provided with a wire gauze diaphragm of incorrodible material.

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