# The Offshore Installations (Emergency Pipe-line Valve) Regulations 1989, Regulation 5: Incorporation of emergency shut-down valves


(1) There shall be incorporated in every riser, and thereafter maintained in good working condition, a valve which shall be capable of blocking the flow of substances within the pipe-line at the point at which it is incorporated.
(2) The valve shall be held open by an electrical, hydraulic or other signal to the mechanism for actuating the valve on the failure of which signal the valve shall automatically close.
(3) The valve shall also be capable of being closed–
(a) by a person positioned by it; and
(b) automatically by the operation of the associated installation’s emergency shut-down system.
(4) If the pipe-line of which the riser forms part is designed to allow for the passage of equipment for testing, inspecting or maintaining the pipe-line, the valve shall also be designed to allow for such passage.
(5) The valve and its actuating mechanism shall so far as reasonably practicable be protected from damage arising from fire, explosion or impact.

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Source: https://www.legislation.gov.uk/uksi/1989/1029/regulation/5 (the official version)
Page: https://openlegislation.uk/offshore-installations-emergency-pipe-line-valve-regulations-1989/regulation-5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.