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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.
Supplement to Guideline – ‘Environmental Risk Tolerability for COMAH Establishments’
Complex Site Example v0.0
Page 31 of 35
Figure 12
–
Mitigated Risk Contribution as a proportion of the intolerable risk frequency.
As well as the graphical representation of the final risk contribution from each compartment a tabular summary of the risk
driving scenarios was developed from the accompanying spreadsheet which provided a simple numerical summary of the
results for each MAS at both the unmitigated and mitigated assessment stages.
An illustration of this is provided below which assumes all MAS in each of the compartments across all of the catchments
could potentially impact the same receptor– a conservative assumption which can be refined further during Stage 2 where
necessary.