|369C||Title:||MERCHANT SHIPPING (INSTRUCTIONS TO SURVEYORS) (PASSENGER SHIPS) REGULATIONS||Gazette Number:|
|Regulation:||40||Heading:||Test of watertight doors||Version Date:||30/06/1997|
(1) Watertight doors shall be tested by water pressure to a head up to the margin line. The test shall be made before the ship is put in service either before or after the door is fitted. Where there are several doors of the same type to be fitted in a ship, one of the type may be selected for test at the maker's works and, provided the result of the test is satisfactory, the remaining doors of the type may be accepted without such tests.
In closing the doors for the test to be applied, the power exerted should not exceed that available for operating the doors on board the ship for which they are intended. The frame-work in the workshop to which the door frame is secured for the purpose of testing, should not be such as to give greater reinforcement to the frame than the stiffening on the bulkhead to which it is to be attached.
The head of water should be taken from the bottom of the door to the margin line in way of the bulkhead on which the door is fitted, but in no case should the test pressure be less than 20 feet head for sliding doors and 10 feet head for hinged doors. The purpose of the test is to show that the door is of sufficient strength and reasonably tight under the test pressure. The amount of leakage is to be recorded.
(2) After being fitted in place on the bulkhead, the door including the watertightness of the attachment of the door frame to the bulkheads, is to be tested by a hose in the manner required for the bulkhead (see paragraph 26).
(3) All the doors should be operated by hand, and by power if provided, in the presence of the Surveyor and the times taken to close should be reported. In the case of bunker doors the closing tests should be made when coal is in the bunkers.
(4) The Surveyor should see that the indicators and warning signals are efficient.