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Local Fuel plc - Shoreham Oil Terminal
Safety Instrument System Functional Safety Assessment Stage 5
P & I Design Ltd
DOCUMENT NO: LF364100_RPT
2 Reed Street, Thornaby, UK, TS17 7AF
ISSUE: A DATE: 15.06.2015
Tel: + 44 (0)1642 617444
PAGE 17 OF 32
Fax: + 44 (0)1642 616447
www.pidesign.co.uk5.2.19 SRS Review
Sections 5.2.1 to 5.2.18 of this FSA review the SRS with respect to it providing the required
information to comply with the relevant clauses of BS EN 61511.
The following details are more general review of the SRS in respect to the requirements of the
functionality of the SIS.
Section 2.2 of the SRS details that activation of a high level in any of the four gasoline
tanks Tank 1, 2, 3 & 4 will close the common import valve XV162. Activation of any
of the remaining Tank high level sensors will provide an alarm. However, Section 4.6
of the SRS contradicts this is stating in the section “Safe State” that they also stop the
flow to all tanks.
Action 1 previously requires Local Fuel plc to consider if the Tanks to
be converted to Marine Gas Oil should operate on the gasoline import
valve. The conclusion to this will also have an impact in modifying the
SRS to reflect how the modified system is to operate.
Action 4:
Action 5: