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ConocoPhillips – Bramhall Terminal
Road Loading Safety Instrument System - Functional Safety Assessment
P & I Design Ltd
DOCUMENT NO: SI181001_RPT
2 Reed Street, Thornaby, UK, TS17 7AF
ISSUE: B DATE: 30.03.17
Tel: + 44 (0)1642 617444
PAGE 15 OF 30
Fax: + 44 (0)1642 616447
www.pidesign.co.ukAlarms in the control room alert the operators that the system has operated. There is a reset
procedure for restarting the SIS. Procedure BRM029.
Document Number 11631/15111-100, Issue 2, dated 20
th
September 2010 details this. This
document is part of the detailed design documentation.
Documented in the Design Basis and in Document Number 11631/15111-100, Issue 2, dated
20
th
September 2010
No user Software is necessary. Not Applicable
There is no override of the sensor or valve as per PSLG recommendations.
Operation of the road loading facility will not be possible in the event of a failure of the SIS
The terminal have considered MTTR. The loss of a single gantry would not bring the terminal
operations to a halt.
The system is designed to fail safe and no dangerous combinations of output states have been
identified.