Statutory Documents - MCA Publications - PYC - A Code of Practice for Yachts Carrying 13 to 36 Passengers (The Passenger Yacht Code) - Chapter 4 - Construction, Subdivision and Stability - Part III - Subdivision, Watertight and Weathertight Integrity - 4.13 Initial Testing of Watertight Bulkheads, etc.:
4.13 Initial Testing of Watertight Bulkheads, etc.:
(1) Testing of watertight spaces not intended to hold by filling them with water is not compulsory but where such testing is not carried out-
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(a) a hose test shall be carried out where practicable;
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(b) this test shall be carried out in the most advanced stage of the fitting out of the ship;
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(c) where a hose test is not practicable because of possible damage to machinery, electrical equipment insulation or outfitting items, it may be replaced by a careful visual examination of welded connections, supported where deemed necessary by means such as a dye penetrant test or an ultrasonic leak test or an equivalent test; and
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(d) in any case a thorough inspection of the watertight bulkheads shall be carried out.
(2) The forepeak, double bottom (including duct keels) and inner skins shall be tested with water to a head corresponding to the requirements of section 4.12(1).
(3) Tanks which are intended to hold liquids, and which form part of the watertight subdivision of the ship, shall be tested for tightness and structural strength with water to a head corresponding to its design pressure and the water head is in no case to be less than the top of the air pipes or to a level of 2.4 metres above the top of the tank, whichever is the greater.
(4) The tests referred to in subsections (2) and (3) are for the purpose of ensuring that the subdivision structural arrangements are watertight and are not to be regarded as a test of the fitness of any compartment for the storage of oil fuel or for other special purposes for which a test of a superior character may be required depending on the height to which the liquid has access in the tank or its connections.
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