Section 111 in The Petroleum And Natural Gas (Safety In Offshore Operations) Rules, 2008
111. Emergency shutdown systems .-(1) There shall be an emergency shutdown system, which is able to prevent situations of hazard and accident from developing and to limit the consequences of accidents.
(2)The emergency shutdown system shall be able to perform the intended functions independently of other systems.(3)The emergency shutdown system shall be designed in such a manner that it will go to or remain in a safe condition in the event of a failure which may prevent the functioning of the system.(4)The emergency shutdown system shall have a simple and unambiguous command structure.(5)The emergency shutdown system shall be capable of being activated manually either from control room or from release stations located at strategic places on the facility.(6)There shall be a provision to activate functions manually from the central control room in such a manner that the facility is brought to a safe condition in the event of failure in the programmable parts of the system.(7)Emergency shutdown valves shall be installed which are capable of stopping streams of hydrocarbons and chemicals to and from the facility, and which isolate the fire areas on the facility.
