# Pressure Systems Safety Regulations (Northern Ireland) 2004, Paragraph 4

Extent: N.I.

That part of a system which is only a pressure system because it is –
(a) subject to a leak test (except that this sub-paragraph shall not apply to a pipeline);
(b) pressurised unintentionally, such pressurisation being not reasonably foreseeable; or
(c) a pipeline pressurised by a relevant fluid solely as part of a test or line clearance operation, but this exception shall not apply if the pipeline –
(i) is used for the conveyance of a relevant fluid, or
(ii) is pressurised beyond its safe operating limits.

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Source: https://www.legislation.gov.uk/nisr/2004/222/schedule/1/paragraph/4 (the official version)
Page: https://openlegislation.uk/pressure-systems-safety-regulations-northern-ireland-2004/schedule-1/paragraph-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.