LF364002_MNL - Overfill Protection SIS Management Manual

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Local Fuel PLC – The Shoreham Oil Terminal
SIS Management of Functional Safety – Safety Plan
P & I Design Ltd DOCUMENT NO:LF364004_RPT
2 Reed Street, Thornaby, UK, TS17 7AF ISSUE: D DATE: 07.06.16
Tel: + 44 (0)1642 617444 PAGE 10 OF 28
Fax: + 44 (0)1642 616447
7.2.1 Allocation of Safety Functions Requirements
Lifecycle
phase in
Figure 1
Activity
2 Allocation of safety functions to protection layers
Objectives Inputs Outputs Deliverables
Responsible persons
and or organisations
Allocation of safety functions to
protection layers and for each safety
instrumented function, the associated
safety integrity level.
Required safety
functions and
associated
integrity levels
Description of
safety functions
allocation to
different
systems
SIL Determination
Functional Safety
Manager
Designers
Lifecycle
phase in
Figure 1
Verification Plan
9 Utilise QSF022_SIS – Stage 1 – Hazard & Risk Assessment - Checklist A
7.2.2 Allocation of Safety Functions Action History
Activity History – Terminal in Chevron/Valero ownership
Date Reference Description
25.01.07
2
SI087007_RPT
Revision A
The LOPA concluded that an additional layer of protection was required and that a Safety
Instrumented System with integrity of SIL 2 be designed and installed. The Safety Instrumented
Function being that if any gasoline tank level was above the existing high level alarm then it would
activate the closure of the jetty import line valve and stop the gasoline flow to the terminal.
7.3 Risk Analysis and Allocation of Safety Functions Verification History
Lifecycle
phase in
Figure 1
Verification -Terminal in Chevron/Valero ownership
9 Utilise QSF022_SIS – Stage 1 – Hazard & Risk Assessment - Checklist A
Verification Checklist Notes
SI157105_RPT Revision A – Compliance Document - Section 4 QSF022 did not exist under Chevron ownership, all
checklists were contained in a compliance document.
Section 4 was a combined HRA – SRS Checklist