Graviner is an oil mist detector by Kidde Fire Protection, and American company established in 1917. Crankcase explosions due to ignition of oil mist can be disastrous to both vessel and crew, so marine safety equipment on board must be capable of dealing with a possible hazard in seconds. Since the potential hazard was first identified some fifty years ago, the Graviner oil mist detector has been used to monitor oil mist levels on many thousands of merchant ships and has been supplied to almost every ship-owning nation.
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