Section 32B in The Static and Mobile Pressure Vessels (Unfired) Rules, 2016
32B. Extent of hazardous area.
(1)The extent of hazardous area for liquefied petroleum gas dispenser shall be as under-(i)Entire space within the dispenser enclosure cabinet and forty six centimeters horizontally from the exterior of enclosure cabinet and up to an elevation of one hundred and twenty two centimeters above dispenser base and the entire pit or open space beneath the dispenser shall be zone '1'.(ii)Upto forty-six centimeters vertically above the surrounding ground level and horizontally beyond forty six centimetres up to six meters on all sides of the dispenser enclosure cabinet shall be zone '2'.(2)Extent of hazardous area in storage premises of flammable gases shall be as per IS:5572 or any other relevant code accepted by the Chief Controller.
