ALARM FOR LIQUEFIED NATURAL GAS AND SECURITY SYSTEM FOR LIQUEFIED NATURAL GAS

摘要

PROBLEM TO BE SOLVED: To provide an alarm for liquefied natural gas, with which a fire detector can be spread to a supply destination of liquefied natural gas.;SOLUTION: The liquefied natural gas alarm 20 is provided with an interruption signal output means 29 outputting an interruption signal making an interruption means 11 interrupt a supply path supplying liquefied natural gas. The alarm 20 detects density of liquefied natural gas in an installation place, and issues an alarm when density is in an alarm state. The interruption signal output means 29 outputs the interruption signal. The alarm is also provided with a fire signal input means 28 to which a fire signal which the fire detector 30 arranged outside a device main body outputs and which shows occurrence of fire is inputted. The interruption signal output means 29 outputs the interruption signal in accordance with input of the fire signal via the fire signal input means 28.;COPYRIGHT: (C)2005,JPO&NCIPI