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Simon Storage Ltd – Immingham East Terminal
Gasoline Import – Layers of Protection Analysis
P & I Design Ltd
DOCUMENT NO: SI057001_RPT
2 Reed Street, Thornaby, UK, TS17 7AF
ISSUE: G DATE: 29.06.12
Tel: + 44 (0)1642 617444
PAGE 23 OF 34
Fax: + 44 (0)1642 616447
www.pidesign.co.uk5.3.2 Initiating Event Likelihood (Ref. PSLG Guidelines, Clauses 55-57)
Initiating events were determined using a demand tree
Overfill of tank
Three of the initiating events were identified as the controlling factors in a possible
overfill:
Incorrect Routing on import
Incorrect Ullage in receipt tank. (Not enough ullage to take full import quantity)
Failure of ATG (Sticks or reads low)
Failure of ATG
whilst filling
Incorrect
Routing on
import
Incorrect
Ullage in
receipt tank
Valve failure
(or passing)
Changes in
filling rate
Failure to
terminate import
at ship