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Local Fuel PLC – The Shoreham Oil Terminal
SIS Management of Functional Safety – Safety Plan
P & I Design Ltd
DOCUMENT NO:LP364004_RPT
2 Reed Street, Thornaby, UK, TS17 7AF
ISSUE: C DATE: 27.05.15
Tel: + 44 (0)1642 617444
PAGE 12 OF 28
Fax: + 44 (0)1642 616447
www.pidesign.co.uk9
FUNCTIONAL SAFETY ASSESSMENT – STAGE 1
Stage 1 – After the HAZOP and risk assessment has been carried out, the required protection
layers have been identified and the safety requirement specification (SRS) has been
developed.
9.1
Functional Safety Assessment Stage 1 Requirements
Lifecycle
phase in
Figure 1
Activity
10
Functional Safety Assessment Stage 1
Objectives
Inputs
Outputs
Deliverables
Responsible persons
and or organisations
To investigate and arrive at
a judgement on the
functional safety achieved
by the SIS.
Planning for SIS
functional safety
assessment
LOPA
SRS
Results of SIS
functional safety
assessment
Functional Safety
Assessment
Stage 1
Document
Functional Safety
Manager
FSA Chairperson
FSA Team
Functional Safety Assessment
Proposed Agenda:
The FSA will address the following as a minimum:
That the hazard and risk assessment considers the following:
o
Determined the hazards and hazardous events of the process and associated equipment;
o
Determined the sequence of events leading to the hazardous event;
o
Determined the process risk associated with the hazardous event;
o
Determined the requirements for risk reduction;
o
Determined the safety functions required to achieve the necessary risk reduction;
o
Determined the safety instrumented functions and Safety integrity level
The recommendations from the hazard and risk assessment are in place and have been properly defined in the SRS.
The SRS fully defines the Safety Instrumented System and the safety instrumented functions necessary to achieve the
required functional safety;
That a software safety requirements specification shall be derived from the SRS;
That project design change procedures are in place and properly implemented.
Plans or strategies for implementing further FSA’s are in place
9.2
Functional Safety Assessment Stage 1 Action History
Activity History – Terminal in Texaco/Chevron/Valero ownership
Date
Reference
Description
A Functional Safety Assessment Stage 1 was not conducted.