The ability of a structure to tolerate damage without failure.
Source: API RP 2SIM, Structural Integrity Management of Fixed Offshore Structures, First Edition, November 2014. Global Standards
Ability of a structure to withstand accidental and abnormal events without being damaged to an extent disproportionate to the cause
Source: ISO 19900:2013, Petroleum and natural gas industries – General requirements for offshore structures. Global Standards