Description of BS EN ISO 19905-1:2023 2023
This document specifies requirements and provides recommendation
and guidance for the elevated site-specific assessment (SSA-E) of
independent leg jack?up units for use in the petroleum and natural
gas industries. It addresses: a)Â Â Â Â Â Â occupied non-evacuated,
occupied evacuated and unoccupied jack?ups; b)Â Â Â Â Â Â the installed
(or elevated) phase at a specific site. It also addresses the
requirement that the as-installed condition matches the assumptions
used in the assessment. This document does not address the
site-specific assessment of installation and removal (SSA-I). To
ensure acceptable reliability, the provisions of this document form
an integrated approach, which is used in its entirety for the
site-specific assessment of a jack?up. When assessing a jack-up
operating in regions subject to sea ice and icebergs, it is
intended that the assessor supplements the provisions of this
document with the relevant provisions relating to ice actions
contained in ISOÂ 19906 and procedures for ice management contained
in ISOÂ 35104. This document does not address design, transit to and
from site, or installation and removal from site. This document is
applicable only to independent leg mobile jack-up units that are
structurally sound and adequately maintained, which is normally
demonstrated through holding a valid recognized classification
society, classification certificate. Jack?ups that do not hold a
valid recognized classification society certificate are assessed
according to the provisions of ISOÂ 19902, supplemented by
methodologies from this document, where applicable. NOTEÂ 1Â Â Â Â Â Â Â
Well conductors can be a safety-critical element for jack?up
operations. However, the integrity of well conductors is not part
of the site-specific assessment process for jack?ups and is,
therefore, not addressed in this document. See A.1 for guidance on
this topic. NOTEÂ 2Â Â Â Â Â Â Â RCS rules and the IMO MODU code
(International Maritime Organisation Mobile Offshore Drilling Unit
code) provide guidance for the design of jack-ups.
About BSI
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