9.8 Fire-extinguishing arrangements for the drill floor
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - International Codes - 2009 MODU Code - Code for the Construction and Equipment of Mobile Offshore Drilling Units, 2009 – Resolution A.1023(26) - Chapter 9 - Fire Safety - 9.8 Fire-extinguishing arrangements for the drill floor

9.8 Fire-extinguishing arrangements for the drill floor

9.8.1 The drill floor should be protected by a fixed pressure water-spraying system designed to provide a minimum water application rate of 20 l/m2/min to the drill floor and related equipment, including emergency shutdown equipment, critical structural components, and enclosure fire barriers. Alternatively, multiple fixed monitors discharging at a minimum flow rate and pressure 1,900 l/min at 1 N/mm2 may be provided and arranged such that all areas and equipment can be reached by at least two monitors which are widely separated.

9.8.2 The system should be designed for manual release from release stations located outside the protected area. Any section valves necessary for the operation of the system should be located outside the protected area. Automatic release may be accepted by the Administration.

9.8.3 Nozzles, piping, fittings and related components should be designed to withstand exposure to temperatures up to 925°C.

9.8.4 The main fire pumps may be used to supply the fixed pressure water-spraying system if they have sufficient capacity to simultaneously supply the fire main at the required flow and pressure.

Parent topic: Chapter 9 - Fire Safety
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