Studies of significant properties of filter type self rescuer for its use in underground coal mine in CO exposure

摘要

The carbon monoxide (CO) is a highly toxic gas; it is outcome of fire or explosion in underground coal mines. It combines with hemoglobin of coal mine workers and carboxyhemoglobin forms which reduces the oxygen carrying capacity of blood. A few breath of CO gas, even 0.1 per cent in atmosphere, causes respiratory failure. Filter type self rescuer, FSR is a life saving gas mask breathing apparatus against CO exposure in underground coal mine. The quality of FSR was evaluated in respect of its duration for use, carbon monoxide conversion by hopcalite, breathing resistances, leak tightness properties, etc. A scope of improvement is observed in cartridge of self rescuer as well as in the clauses of BIS 9563-1980 in order to increase the duration and improvement in the quality of self rescuer.