Definition(s)
Limit State
State beyond which the structure no longer fulfils the relevant design criteria. [ISO 19900:2002]
Source: ISO 19901-7:2013, Petroleum and natural gas industries – Specific requirements for offshore structures – Part 7: Stationkeeping systems for floating offshore structures and mobile offshore units. Global Standards
Source: ISO 19900:2013, Petroleum and natural gas industries – General requirements for offshore structures. Global Standards
Limit State
State beyond which the structure no longer fulfils the relevant assessment criteria. NOTE Adapted from ISO 19900:2002, definition 2.21.
Source: ISO 19905-1:202, Petroleum and natural gas industries – Site-specific assessment of mobile offshore units – Part 1: Jack-ups. Global Standards
Limit State
A state beyond which the structure no longer satisfies the requirements. The followings categories of limit states are of relevance for structures: ULS = ultimate limit states; FLS = fatigue limit states; ALS = accidental limit states; SLS = serviceability limit states.
Source: Offshore Standard DNV-OS-C101, Design of Offshore Steel Structures, General (LRFD Method, Det Norske Veritas, April 2011. Global Standards