NF EN ISO 19905-1, M87-263-1 (11/2023)

This document specifies requirements and provides recommendations for Site Specific Assessment in Elevated Condition (SSA-E) of independent legged jack-up platform units for use in the petroleum and natural gas industries. It covers: a) jack-up platforms occupied and not evacuated, occupied and evacuated, and not occupied; b) the phase installed (or raised on the legs) on a specific site. It also covers the requirement for the installed state configuration to match the assumptions used in the assessment. This document does not address Site Specific Assessment for Installation and Removal (SSA-I). To ensure acceptable reliability, the provisions of this document form an integrated approach that is used in its entirety for the site-specific assessment of a platform. When evaluating a jack-up platform operating in regions prone to sea ice and icebergs, it is expected that the evaluator will supplement the provisions of this document with the relevant provisions relating to the actions of ice contained in ISO 19906 and by the procedures relating to ice management contained in ISO 35104. This document does not cover the design, transportation to and from a site or installation and removal of the site. This document is only applicable to self-elevating platform units with independent legs that are structurally sound and adequately maintained, which is normally demonstrated by the provision of a valid classification certificate , issued by a recognized classification society (RCS). Jack-up platforms that do not have a valid certificate issued by a recognized certification company are assessed in accordance with the provisions of ISO 19902, supplemented by methodologies from this document, where applicable. NOTE 1 Well conductor tubes can be a safety critical element for jack-up rig operations. However, well conductor tubing integrity is not part of the site-specific assessment process for jack-up rigs and, therefore, is not addressed in this document. See A.1 for recommendations on this topic. NOTE 2 The RCS rules and the IMO (International Maritime Organization) MODU (Mobile Offshore Drilling Unit) code provide recommendations for the design of jack-up platforms.
(Automatic translation from French)