Section 36 in The Static And Mobile Pressure Vessels (Unfired) Rules, 1981
36. Design .-(1) Every vessel used for the transportation of compressed gas shall be constructed and tested in accordance with the requirements of rule 12 and shall meet with the requirements of sub-rules (2), (3), (4) and (5) of this rule.
(2)The design stress shall include an allowance to enable the vessel to withstand shocks normally encountered by movements on road, such as, acceleration and deceleration for a minimum of 3 g. When the vessel is self-supporting, the vessel design shall provide for carrying the additional stresses normally carried by the chassis frame. Provision shall be made for distributing the localised stresses arising from attachments to the vessels.(3)Mounting of vessels on the chassis or underframe shall be done in such a manner as to keep the vibrations to the minimum.(4)All attachments to the vessel shall be protected against accidental damage which may result from collision, over-turning or other operational cause.(5)All vessels shall be designed to withstand the most severe combined stresses to which they may be subjected to by the pressure of the gas, the pumping pressures and shock loading caused by transport conditions.
