ELIMINATION OF HYDROCARBONS FROM BLOWDOWN SYSTEM TO PREVENT EXPLOSIVE MIXTURE

ELIMINATION OF HYDROCARBONS FROM BLOWDOWN SYSTEM TO PREVENT EXPLOSIVE MIXTURE

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The drains of closed equipment (viz.: pumps, heat exchangers, etc.) handling light distillates in the range of C5 TO 140 Deg. C  shall be routed through a closed blowdown system to prevent formation of explosive mixtures.  Also an alternative open drain should be provided with double valve and cap to facilitate the checking of the depressurised nature if the equipment, this shall be operated after the equipment has been isolated (by valves) and depressurised to the closed blowdown.