C.F.R. » Title 46 » CHAPTER I—COAST GUARD, DEPARTMENT OF HOMELAND SECURITY › SUBCHAPTER L—OFFSHORE SUPPLY VESSELS › PART 131—OPERATIONS › Subpart H—Markings for Fire Equipment and Emergency Equipment

46 C.F.R. § 131.820

Branch lines of fire-extinguishing system

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The valves of each branch line in the fire extinguishing system must be plainly and permanently marked, indicating the spaces served.