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Credible Failure Modes : Summary of 2021 and 2023 Workshops

Tailings and Mine Waste Conference (2023 : Vancouver, B.C.); University of British Columbia. Norman B. Keevil Institute of Mining Engineering

This paper provides a discussion on the credible failure modes concept that was included in the Global Industry Standard on Tailings Management (GISTM) issued in August 2020 (GTR, 2020). The interpretation of the credible failure mode concept has been the subject of much discussion and a group of industry leaders convened two workshops (November 2021 and April 2023) to explore the concept and the interpretation of credible failure modes in practice. The key messages from those workshops were as follows: • There are two interpretations when determining credible failure modes; one is based on whether a failure mode is physically possible and the other is based on consideration of negligibility that needs to be clearly defined. • Both interpretations embrace risk assessments and call for a thorough understanding, evaluation, and management of risks associated with potential failure modes. • Both interpretations satisfy the intent of the GISTM. This is an evolving topic, and as the tailings storage facility (TSF) safety community continues to advance the credible failure modes concept in practice, perspectives presented in this paper may also evolve.

Text

2023-12-08

Attribution-NoDerivatives 4.0 International

http://hdl.handle.net/2429/86780

Unreviewed

http://creativecommons.org/licenses/by-nd/4.0/