SAFETY OF LIFE AT SEA C53 



(fl)(ii), (^)(ii) and (ft)(iii} of Regulation 19 of Chapter IIL and in addition 

 such other services as the Administration may require, due regard being paid 

 to Regulation 38 of Chapter III. 



(ii) The power available shall be adequate for a period of at least 

 3 hours. 



(iii) These ships shall also be subject to sub-paragraphs (iii), (iv), and 

 (v) of paragraph (a) of this Regulation. 



Regulation 27 

 Precautions against Shock, Fire and other Hazards of Electrical Origin 



(a) Passenger Ships and Cargo Ships 



(i) (1) All exposed metal parts of electrical machines or equipment 

 which are not intended to be " live ", but are liable to become " live " under 

 fault conditions, shall be earthed (grounded); and all electrical apparatus shall 

 be so constructed and so installed that danger of injury in ordinary handling 

 shall not exist. 



(2) Metal frames of all portable electric lamps, tools and similar 

 apparatus, supplied as ship's equipment and rated in excess of a safety voltage 

 to be prescribed by the Administration shall be earthed (grounded) through a 

 suitable conductor, unless equivalent provisions are made such as by double 

 insulation or by an isolating transformer. The Administration may require 

 additional special precautions for electric lamps, tools or similar apparatus for 

 use in damp spaces. 



(ii) Main and emergency switchboards shall be so arranged as to give 

 easy access back and front, without danger to attendants. The sides and 

 backs and, where necessary, the fronts of switchboards shall be suitably 

 guarded. There shall be non-conducting mats or gratings front and rear 

 where necessary. Exposed current carrying parts at voltages to earth (ground) 

 exceeding a voltage to be specified by the Administration shall not be installed 

 on the face of any switchboard or control panel. 



(iii) (1) Where the hull return system of distribution is used, special 

 precautions shall be taken to the satisfaction of the Administration. 



(2) Hull return shall not be used in tankers. 



(iv) (1) All metal sheaths and armour of cables shall be electrically 

 continuous and shall be earthed (grounded). 



(2) Where the cables are neither sheathed nor armoured and there 

 might be a risk of fire in the event of an electrical fault, precautions shall be 

 required by the Administration. 



Ch. 2 



