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Gasoline Overfill Protection
Safety Instrument System Stage 1 Functional Safety Assessment
P & I Design Ltd
DOCUMENT NO: SI277014_RPT
2 Reed Street, Thornaby, UK, TS17 7AF
ISSUE: C DATE: 16.02.12
Tel: + 44 (0)1642 617444
PAGE 12 OF 12
Fax: + 44 (0)1642 616447
www.pidesign.co.uk4.0
CONCLUSIONS
The overall conclusion of this FSA is that the storage installation had been risk assessed and
the automatic overfill protection system specified to provide an appropriate level of
functional safety. A further LOPA along the PSLG guidelines will need to be conducted
prior to any change of use to allow gasoline storage. A number of detailed recommendations
have been made where either relevant elements of the overall BS EN 61511 lifecycle have
not yet been completed, or where improvements could be made to the information package
that has been prepared to support the project.
Comments noted above will be incorporated Safety Requirement Specification and the
system will be revised to Stage 1 FSA Status.
Actions, listed below, arising from this FSA will be completed within 2 weeks
Action
By
Expected
Completion
Completion
Date
1. Modify SRS as discussed in
the FSA
DSR
21/12/10
21/12/10
2.
Confirm level switch
lengths and high high level
activation point for all
tanks.
SW
21/12/10
04/05/11
3.
Complete Compliance
Document up to FSA Stage
1.
DSR
21/12/10
21/12/10
4.
FSA, Compliance
Document, Management of
Functional safety, SRS &
LOPA to be issued to
Immingham Storage
DSR
21/12/10
21/12/10
5.
Review and Modify LOPA
in line with PSLG
guidelines.
ISCo/P&I Design Ltd.
Prior to any
Gasoline
Storage on
site
31/08/11