Section 23(6) in The Static and Mobile Pressure Vessels (Unfired) Rules, 2016
(6)Vessel supports. -(i)the design of supports for vessels shall follow the standard or code to which the vessel is constructed;(ii)the spacing of vessel support shall be decided after close consideration of vessel-shell stressing and transmission of the loadings to the ground;(iii)the design of supports for vessels shall provide flexibility to allow for movement of the vessel as a result of pressure and thermal expansion;(iv)the vessel shall be securely anchored or weighed or provided with adequate pier height to avoid floatation due to flood water;(v)in case of structural steel supports such supports, excluding vessel saddles or supporting feet 45 cm or less in height, shall be encased in fire-resisting materials of adequate thickness.
