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Safety Instrument System
Tank Overfill Protection - Management of Functional Safety
P & I Design Ltd
DOCUMENT NO: SI277102_RPT
2 Reed Street, Thornaby, UK, TS17 7AF
ISSUE: B DATE:10.10.12
Tel: + 44 (0)1642 617444
PAGE 12 OF 22
Fax: + 44 (0)1642 616447
www.pidesign.co.uk11.2 Post Installation
Upon Completion of the installation, commissioning and validation, all completed
documentation is to be reviewed.
Roles and Responsibilities:
P&I Design Ltd competent person(s) to check the installation against the following
documentation to ensure that the installation was complete and in accordance with the SIS
design and that any modifications necessary were documented, reviewed and the
documentation revised.
Responsible Person(s)
SIS Panel Factory Acceptance Test
D.B. Faulkner
SIS Installation Specification
D.B. Faulkner
Shutdown Conditions Functional Test Document
D.B. Faulkner
Documentation and Verification Document
D.B. Faulkner
Process Conditions Functional Test Document
D.B. Faulkner
Analysis and Approval Document
D.B. Faulkner
Installation Approval and Inspection Document
D.B. Faulkner
Equipment Failure Testing Document
D.B. Faulkner
On completion of the installation and testing a functional safety assessment Stage 3 should be
carried out to ensure the installed SIS meets the requirements of the design and BS EN 61511.