# The Road Vehicles (Authorisation of Special Types) (General) Order 2003, Paragraph 8

Extent: E+W+S

(1) Every union and joint on a pipeline or gas container must be constructed and fitted so that it will—
(a) not be liable to work loose or leak when in use; and
(b) be readily accessible for inspection and maintenance.
(2) Every union on a medium or high pressure pipeline or on a gas container must be made of suitable metal; but such a union may contain non-metal washers and seals provided that such washers and seals are supported and constrained by metal components.

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Source: https://www.legislation.gov.uk/uksi/2003/1998/schedule/12/paragraph/8 (the official version)
Page: https://openlegislation.uk/road-vehicles-authorisation-of-special-types-general-order-2003/schedule-12/paragraph-8
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.