C68 SAFETY OF LIFE AT SEA 



(b) All windows and sidescuttles in bulkheads within accommodaiio(j 

 spaces shall be constructed so as to preserve the integrity requirements 

 the type of bulkhead in which they are fitted. 



(c) In spaces containing (1) main propulsion machinery, or (2> oil-fired 

 boilers, or (3) auxiliary internal combustion type machinery of total horse- 

 power of 1,000 or over, the following measures shall be taken: — 



(i) skylights shall be capable of being closed from outside the space; 



(ii) skylights containing glass panels shall be fitted with external shutters 

 of steel or other equivalent material permanently attached; 



(iii) any window permitted by the Administration in casings of such spaces 

 shall be of the non-opening type, and shall be fitted with an external 

 shutter of steel or other equivalent material permanently attached; 



(iv) in the windows and skylights referred to in sub-paragraphs (i), (ii) and 

 (iii) of this paragraph, wire reinforced glass shall be used. 



Regulation 47 



Ventilation Systems (Methods I, II and III) 



(a) The main inlets and outlets of all ventilation systems shall be capable 

 of being closed from outside the space in the event of a fire. In general, the 

 ventilation fans shall be so disposed that the ducts reaching the various spaces 

 remain within the main vertical zone. 



(b) All power ventilation, except cargo and machinery space ventilation 

 and any alternative system which may be required under paragraph (d) of this 

 Regulation, shall be fitted with master controls so that all fans may be stopped 

 from either of two separate positions which shall be situated as far apart as 

 practicable. Two master controls shall be provided for the power ventilation 

 serving machinery spaces, one of which shall be operable from a position 

 outside the machinery space. 



(c) Efficient insulation shall be provided for exhaust ducts from galley 

 ranges where the ducts pass through accommodation spaces. 



(d) Such measures as are practicable shall be taken in respect of control 

 stations situated below deck and outside machinery spaces in order to ensure 

 that ventilation, visibility and freedom from smoke are maintained, so that 

 in the event of fire the machinery and equipment contained therein m.ay hi 

 supervised and continue to function effectively. Alternative and entirely 

 separate means of air supply shall be provided for these control stations; air 

 inlets to the two sources of supply shall be so disposed that the risk of both 



Ch. 2 



