On an international voyage, a cargo vessel of 1,000 GT or more operating two fire pumps simultaneously is required to have a minimum pitot tube pressure from the two highest outlets. What is the minimum required pressure?
β’ SOLAS fire protection requirements for cargo ships β’ Relationship between fire main pressure and effective firefighting stream height β’ Typical minimum fire main pressure standards for large seagoing vessels
β’ Think about how much pressure is needed at the highest hydrants to produce an effective firefighting jet on a large cargo ship. β’ Compare the answer choices to what you would expect as a realistic continuous pressure from fire pumps supplying multiple hoses at once. β’ Consider which value aligns with international standards for fire main systems on cargo ships, rather than small-boat or domestic standards.
β’ Verify what SOLAS II-2 (Construction β Fire protection, fire detection and fire extinction) requires for fire pump and fire main performance on cargo ships of 1,000 GT or more. β’ Check that the pressure is specified as a minimum pitot tube pressure at the two highest hydrants when two jets are being supplied simultaneously. β’ Confirm that the value must be high enough to maintain effective jet range but not unrealistically high for shipboard fire pumps.
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