Section 18(2)(vi) in The Static and Mobile Pressure Vessels (Unfired) Rules, 2016
(vi)safety relief valves on any vessel shall be set to start-to-discharge at a pressure not in excess of 110 percent of the design pressure or maximum working pressure of the vessel and shall have a total relieving capacity sufficient to prevent the maximum pressure in the vessel of more than 120 percent of the design or maximum working pressure;