Section 22(2) in The Static and Mobile Pressure Vessels (Unfired) Rules, 2016
(2)If the aggregate water capacity of a multi-vessel installation covered under tables 1, 2 and table 3 above is 40,000 litres, the minimum safety distances from any vessel to the property line/group of buildings shall not be less than -(a)thirty metres for corrosive, toxic or flammable gases for above ground vessel and fifteen meters for underground and mounded vessel;(b)fifteen metres for non-corrosive, non-toxic or non-flammable gases.
