# The Road Vehicles (Construction and Use) Regulations 1986, Paragraph 4: Discharge from thermally-activated pressure relief devices


(1) Compressed hydrogen gas discharge from a thermally-activated pressure relief device of a compressed hydrogen storage system must not be directed—
(a) into enclosed or semi-enclosed spaces;
(b) into or towards any vehicle wheel housing;
(c) towards each container;
(d) forward from the hydrogen-fuelled vehicle, or horizontally (parallel to the road) from the back or sides of the hydrogen-fuelled vehicle.
(2) If a thermally-activated pressure relief device of a compressed hydrogen storage system has a vent line, the outlet of this vent line must be protected by a cap.

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Source: https://www.legislation.gov.uk/uksi/1986/1078/schedule/5A/paragraph/4 (the official version)
Page: https://openlegislation.uk/road-vehicles-construction-and-use-regulations-1986/schedule-5A/paragraph-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.