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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 13 of 35
Figure 4
–
Initiating Event Review Process
Safety Report
Select Initiating
Release
Frequency
LOPA*
Assessment
Company Data
(HAZID, BAT)
Generic Data
Is a Multiplier
required based on
events per
year/length/no. of
features in
compartment
No Significant
Environmental Risk
Potential
YES
NO
Define Multiplier
Calculate
Unmitigated Risk
Frequency
NO
YES
Unacceptable Risk
Identified
TO MITIGATED
ASSESSMENT
No Significant
Environmental Risk
Potential
NO
YES
Safety Report
PRIMARY
SECONDARY
PIPELINES
Tank Overfill /
Floor Failure
Tank / Process
Rupture
Tank / Process
Leak
Other Process
Releases
Fire Water
Addition
Bund Failure
Pipeline Rupture
Pipeline Leak
Compartment
Define Material
Properties
Summarise
Compartment
Details
Assess Release
Mechanisms
Assess Material
Inventory
Review Process
Plant / Fluid
Transfers
Tankage,
Drainage System
Flammability,
Toxicity, Mobility
Material Category
May the initiating
event plausibly
generate an
Environmental
Impact?