SI057002_MNL - Gasoline Overfill Protection SIS IMMEAS-SIS1 Management Manual

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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 10 OF 12
Fax: + 44 (0)1642 616447
The proof testing philosophy was discussed and it was confirmed that the functional test will
be an end to end test with a simulated high high level derived from the level switch. The
switches cannot be fixed in the override position.
It was confirmed that there was no requirement for any additional SIFs to support abnormal
modes of operation (Start-up, maintenance, testing etc.)
The Compliance Documentation will be completed up to stage 1
3.3 Project Design Change Procedures are in place and have been properly implemented.
The project design procedures are in place and an audit trail is available for the lifecycle of
the system. At this FSA the documentation was at the following revisions.
LOPA Study SI057001_RPT D (08/07/10)
SIS Safety Requirements Specification SI277010_RPT B (03/12/10)
SIS Management of Functional Safety SI277102_RPT A (09/12/10)
SIS Compliance Document SI277101_RPT B (27/11/10)
Safety Instrument System Design package is to be reviewed at FSA Stage 2/3.