METHOD OF CONTROLLING INDOOR EXPLOSION PROOFNESS

摘要

PROBLEM TO BE SOLVED: To provide a method of controlling indoor explosion proofness capable of efficiently preventing explosion even if explosive substance leaks indoors in which explosive substance-sealed equipment is disposed. SOLUTION: In this method of controlling explosion proofness in a test room 10 in which the explosive substance-sealed equipment such as a dispenser 2 is disposed, stepwise concentration levels are set with the explosion lower limit of the explosive substance taken as an upper limit, and the supply/exhaust amounts to/from the test room 10 is increased or decreased stepwise according to the concentration level of the explosive substance in the test room 10. Also, when the concentration of the explosive substance in the test room 10 exceeds the specified ratio of the explosion lower limit of the explosive substance, the supply of a power into the test room 10 is stopped excluding powers to supply/exhaust means 34 and 36 in the test room 10. COPYRIGHT: (C)2004,JPO