SI057001_MNL - Gasoline Overfill Protection SIS IMMEAS-SIS1 Design Manual

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Immingham East Terminal – Gasoline Overfill Protection
Safety Instrument System
P & I Design Ltd DOCUMENT NO: SI277001_RPT
2 Reed Street, Thornaby, UK, TS17 7AF ISSUE: F DATE: 31.10.14
Tel: + 44 (0)1642 617444 PAGE 5 OF 29
Fax: + 44 (0)1642 616447
4 SAFETY LIFE CYCLE
A SIS requires to be auditable throughout each stage of its cycle. It is necessary not just at the
conceptual and design stage but also at operational and maintenance stages.
The following figure details the life cycle, the section numbers in italics relate to this
document:
Risk Analysis and
Protection Layer
Design
Section 5
Allocation of Safety
Functions to SIS or
Other Means of Risk
Reduction
Section 5
Design and
Development of Other
Means of Risk
Reduction
Section 5
Safety Requirements
Specification for SIS
Separate Document
SI277010_RPT
Design and
Development of SIS
Section 7
Installation,
Commissioning and
Validation
Separate Document
Operation and
Maintenance
Separate Document
Modification
Separate Document
Decommissioning
Separate Document