Local Fuel – Shoreham Oil Terminal
Gasoline Ship Import – Layers of Protection Analysis
P & I Design Ltd
DOCUMENT NO: LF364002_RPT
2 Reed Street, Thornaby, UK, TS17 7AF
ISSUE: E DATE: 30.07.15
Tel: + 44 (0)1642 617444
PAGE 12 OF 38
Fax: + 44 (0)1642 616447
www.pidesign.co.ukFor Environmental Hazards the tolerable risk levels are based on those given in Appendix
2 of the Process Safety Leadership Group (PSLG) final report into the Buncefield
explosion.
2
These figures are based on information in IPPC document Integrated Pollution
Prevention and Control (IPPC) and Environmental Assessment and Appraisal of BAT.
Consequence Definition
Acceptable if
frequency less than
Unacceptable if
frequency more
than
Minor:
Nuisance onsite only. No
off-site effects.
All shown as
acceptable
-
Noticeable
Minor breach of
permitted emission limits,
but no environmental
harm
10
-2
per year
~ 10 per year
Significant
Major breach of
permitted emissions limits
with possibility of
prosecution
10
-4
per year
10
-1
per year
Severe
Public warning and offsite
emergency plan invoked
Hazardous substance
releases into water course
with ½ mile effect
10
-6
per year
10
-2
per year
Major
Serious toxic effect on
beneficial or protected
species
Widespread but not
persistent damage to land
10
-6
per year
10
-4
per year
Catastrophic Major airborne release
with serious off-site
effects
Site shutdown
Serious contamination of
groundwater or
watercourse with
extensive loss of aquatic
life
10
-6
per year
10
-4
per year
Table 4 - Environmental Tolerable Risk Frequency
Safety and Environmental standards for fuel storage sites – ISBN 978 0 7176 6386 6