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CDOIF
Chemical and Downstream Oil
Industries Forum
CDOIF is a collaborative venture formed to agree strategic areas for
joint industry / trade union / regulator action aimed at delivering
health, safety and environmental improvements with cross-sector
benefits.
Where company specific failure rate data is not available, duty holders can make
reference to the table of typical failure rates and the Environmental QRA data and
MATTE case studies available in the CA’s ‘All Measures Necessary Guidance’.
Note that when completing environmental risk assessments, consideration should be
given to escalation of a scenario, which could give rise to a greater consequence.
4.3.5
Determining risk reduction of prevention and mitigation layers
Reference should be made to the CA’s ‘All Measures Necessary Guidance’ for
information relating to the risk reduction provided by different prevention and mitigation
layers. Other sources may also be of use, for example insurance company databases
may provide failure rate data for fire prevention systems.
Guideline – Environmental Risk Tolerability for COMAH Establishments v1.0
Page 28 of 88