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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 7 OF 29
Fax: + 44 (0)1642 616447
www.pidesign.co.uk6
SPECIFICATION OF SAFETY INSTRUMENT SYSTEM
6.1
Safety Instrumented Function
The Safety Instrument Functions are to prevent overfill of the storage tanks. See Safety
Requirement Specification SI227010_RPT.
The fixed roof tanks (No. 4 East) will have actuated import or import/export valves which
will automatically close on the activation of the high level switch for that particular tank. The
following valves are included in the design:
XV56101
Tank 561 Import/Export Valve
XV56401
Tank 564 Import/Export Valve
XV56801
Tank 568 Import/Export Valve
The No. 4 East tanks are designated as 561, 564 & 568.
All tank-side actuated valves will also close on activation of the 4 East Crash Stop, on
activation of that tank’s high high level switch or on activation of an individual tank isolation
pushbutton for any of the above tanks, installed outside the bunds.