Rules and Regulations for the Construction and Classification of Steel Vessels

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Page 55 - The arrangement of the bilge and ballast pumping system shall be such as to prevent the possibility of water passing from the sea and from water ballast spaces into the cargo and machinery spaces, or from one compartment to another. Special provision shall be made to prevent any deep tank having bilge and ballast connections being inadvertently run up from the sea when containing cargo, or pumped out through a bilge pipe when...
Page 123 - The tensile breaking strength is not to be less than 21^ tons per square inch, with an elongation of not less than 25 per cent measured on the Standard test piece B, or of 30 per cent measured on the Standard test piece C.
Page 122 - For plates intended for flanging or welding, and for combustion chambers and furnaces, the tensile breaking strength shall be between the limits of 26 and 30 tons per square inch. In the case of material for purposes in which tensile strength is not important, the tensile test may be dispensed with, and the bend test only be made, if so specified by the builders and approved by the committee.
Page 20 - The screw shaft is to be drawn at intervals of not more than three years in the cases of shafts fitted with continuous liners, and of shafts fitted with approved glands, or other approved appliances, at their after ends to permit of them being efficiently lubricated. In the cases of other screw shafts, they should be drawn at intervals of not more than two years. (On the application of owners, the Committee will be prepared to give consideration to the circumstances of any special case.) 5.
Page 76 - The percentage of strength of a riveted joint (J) is found from the following formulae (i), (ii), (iii) : (i) and (ii) are applicable to any type of joint, (iii) is applicable only to that type of joint in which the number of rivets in the inner rows is double that in the outer row. The lowest value given by the application of these formulae is to be taken as the percentage of strength of the joint. (i) Percentage of strength of plate at ) _ 100 (p — d) joint as compared with solid plate ) p (ii)...
Page 84 - Efficient positive means of lubrication (preferably sight feed) must be fitted to each part requiring continuous lubrication. 6. If the engines are of the closed-in type, they must be so fitted that the contained lubricating oil can be drained when necessary, and in wood vessels an easily drained metal or metal-lined tray must be fitted to prevent leakage of either fuel oil or of lubricating oil from saturating the wood work.
Page 74 - Ij inches and the pijies not less than 1 inch internal diameter. The upper ends of the connecting pipes are to be arranged so that there is no pocket or bend where an accumulation of water from the condensation of the steam can lodge. They should not pass through the uptake if they can be otherwise arranged. If, however, this condition cannot be complied with, they may pass through it by means of a passage at least 2 inches clear of the pipe all round, open for ventilation.
Page 79 - For the tops of combustion chambers where they are joined to the sides by curved portions, if the outer radius of the curved portion is less than half the allowable distance between the girders, the distance between the first girder and the inner surface of the side plate is not to exceed the allowable distance between the girders. If the radius of the curved portion is greater than half the allowable distance between the girders, the width of the flat portion measured from the centre of the girder...
Page 90 - In the cases of seamless receivers, the thicknesses must be verified by the Surveyor before the ends are closed in, and at this time the Surveyor shall select and mark the test pieces required from either of the open ends of the tube. The test pieces are to be annealed before test, so as to properly represent the finished material. 6. The permissible working pressure for welded or seamless receivers is to be determined by the following formula: Maximum working pressure in Ibs.
Page 60 - Water service pipes and hoses are to be fitted so that the stokehold plates can at any time be flushed with sea water into the bilges. 17. If the oil fuel is sprayed by steam, means are to be provided to make up for the fresh water used for this purpose.

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