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Case study – environmental risk
Introduces the ALARP principle and R2P2 model for environmental risk assessment
November 2016
Source 1
Source 2
Risk
Overfill +
Leak +
Catastrophic Tank Failure
Credible Scenarios
– Refer to section
4.2
Source(s) –
Refer to section 4.2
Receptor
Intolerable
TifALARP
Broadly Acceptable
From Consequence
Level Assessment
(Frequency per
receptor per
establishment per
year) – Refer to
Appendix 3
From Consequence
Level Assessment
(Frequency per
receptor per
establishment per
year) – Refer to
Appendix 3
From the definition
of the types of
environmental
harm (MATTE
definition) – Refer
to section 3
Further risk reduction
measures (subject to CBA)
Unmitigated
Risk
Mitigated Risk with
Existing measures
Warehouse
Source 3
Source n
Pipework
Tank
Tank