Regulation 12 - Automatic sprinkler, fire detection and fire alarm systems

 Reference is made to IMO resolution A.800(19) - Revised guidelines for approval of sprinkler systems equivalent to that referred to in SOLAS regulation II-2/12.

• 1 For the definition of "dry pipe system" see resolution A.800(19), annex, paragraph 2.3. Such a system is used where the possibility of freezing exists during operation of the ship in cold climates.

• 2 Saunas should be fitted with a dry pipe sprinkler system. The operation temperature may be up to 140°C.

 Section stop valves should be located outside of the associated section or in cabinets within stairway enclosures.

 Nominal area is defined as being the gross, horizontal projection of the area to be covered.

 This requirement may be considered fulfilled after examination of the hydraulic calculations with satisfactory results, confirmed, where deemed necessary, by a practical test.

 Spare sprinkler heads should include all types and ratings installed in the ship, and should be provided as follows:

The number of spare sprinkler heads of any type need not exceed the number of heads installed of that type.