Regulation 13 - Inlets and discharges
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Regulation 13 - Inlets and discharges

  (1) Discharges led through the shell either from spaces below the working deck or from within enclosed superstructures or deckhouses on the working deck fitted with doors complying with the requirements of regulation 4 shall be fitted with accessible means for preventing water from passing inboard. Normally each separate discharge shall have an automatic nonreturn valve with a positive means of closing it from an accessible position. Such a valve is not required if the Administration considers that the entry of water into the vessel through the opening is not likely to lead to dangerous flooding and that the thickness of the piping is sufficient. The means for operating the positive action valve shall be provided with an indicator showing whether the valve is open or closed.

  (2) In manned machinery spaces main and auxiliary sea inlets and discharges essential for the operation of machinery may be controlled locally. The controls shall be accessible and shall be provided with indicators showing whether the valves are open or closed.

  (3) Fittings attached to the shell and the valves required by this regulation shall be of steel, bronze or other approved ductile material. Ail pipes between the shell and the valves shall be of steel, except that in spaces other than machinery spaces of vessels constructed of material other than steel the Administration may approve the use of other materials.

Parent topic: Chapter II - Construction, Watertight Integrity and Equipment
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