Regulations

Definition(s)

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Secondary Well Barrier

Second set of well barrier elements that prevent flow from a source of inflow. [SOURCE: API RP 90, modified] Source: ISO 16530-1:2017, Petroleum and natural gas industries — Well integrity – Part 1: Life cycle governance, First Edition, March 2017. Global Standards

Secondary Well Barrier

Second set of barrier elements that prevents flow from a source. Source: API RP 90, Annular Casing Pressure Management for Offshore Wells, Upstream Segment. First Edition, August 2006. Global Standards

Definition(s)

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Safety Critical Element

Part of a facility, including computer programs, whose purpose is to prevent or limit the consequences of a major accident, or whose failure could cause or contribute substantially to a major accident

• Note: 1 to entry: Safety critical elements include measures for prevention, detection, control and mitigation (including personnel protection) of hazards.

[SOURCE: EU Directive 2013/30/EU, modified] Source: ISO 16530-1:2017, Petroleum and natural gas industries — Well integrity – Part 1: Life cycle governance, First Edition, March 2017. Global St

Safety Critical Element

Any component part of structure, equipment, plant or system whose failure could cause a major accidentt. Source: API RP 2FB, Recommended Practice for the Design of Offshore Facilities Against Fire and Blast Loading, First Edition, April 2006. Global Standards

Safety-Critical Elements

“Safety-critical elements” means such parts of an installation and such of its plant (including computer programmes), or any part thereof—

1. the failure of which could cause or contribute substantially to; or
2. a purpose of which is to prevent, or limit the effect of, a major accident.

Source: The Offshore Installations (Safety Case) Regulations 2005, UK S.I. 2005/3117, 2005. Regulations  

Safety Critical Element

Safety Critical Element (SCE) means such part of an installation and such of its plant (including computer programmes) or any part there of, the failure of which would cause or contribute substantially to, or a purpose of which is to prevent, or limit the effect of, a major accident. Source: NOGEPA Industrial Guideline No. 43, Surface BOP Review, Best Practices Checklist, Netherlands, Version 0, December 2011. Global Standards  

Safety Critical Element

Safety-critical element— (a) means any part of an installation or its plant (including a computer program)— (i) that has the purpose of preventing, or limiting the effect of, a major accident; or (ii) the failure of which could cause or contribute substantially to a major accident; and (b) without limiting the generality of paragraph (a), includes plant installed at the installation for the purpose of— (i) detecting smoke, fire, accumulations of flammable (and other hazardous) gases, leakages of flammable liquids, and other events that may require an emergency response; or (ii) giving warning of an emergency by audible and, where necessary, visual alarm systems; or (iii) limiting the extent of an emergency, including— (A) measures to combat fire and explosions: (B) emergency shut-down systems: (C) facilities for the monitoring and control of the emergency and for organizing evacuation; or (iv) protecting petroleum workers from explosion, fire, heat, smoke, hazardous gas, or fumes during any period while petroleum workers may need to remain on an installation during an emergency; or (v) safely evacuating all petroleum workers to a place of safety; or (vi) providing safe means of escape in the event that arrangements for evacuation fail. Source: Health and Safety in Employment (Petroleum Exploration and Extraction) Regulations 2013, SR 2013/208, New Zealand, as of May 2013. Regulations