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Local Fuel PLC – The Shoreham Oil Terminal
Safety Instrument System Overfill Shutdown Conditions Proof Testing Procedure LFS-SIS1
P & I Design Ltd
DOCUMENT NO: LF364012_RPT
2 Reed Street, Thornaby, UK, TS17 7AF
ISSUE: A DATE: 20.05.15
Tel: + 44 (0)1642 617444
PAGE 16 OF 22
Fax: + 44 (0)1642 616447
www.pidesign.co.uk8
FAILURE MODE TESTING PROCEDURE
8.1
Failure Mode Functional Testing
Purpose of Test
To verify the correct FAILURE MODES of the System Description system.
To verify correct failure DIAGNOSTICS information.
Diagnostic information not displayed correctly could result in undetected tank overfill, system
unavailability or incorrect operational response.
Controlled Copy Documentation Required
LF364003_SCH - LFS-SIS1 Testing Matrix
Record results on LF364003_SCH Sheet 5 & 6.
Loop Sheets as listed on LF364001_REG - LFS-SIS1 Drawing Register
Step
Method of Test
Acceptance Criteria
Pass (
)
Fail (x)
Initial
8.1.1
Review procedure with operations and
testing personnel.
All personnel familiarised with the scope
of works and responsibilities
.
Comment any issues in section 8.1.6 and
review / rectify prior to starting testing.
8.1.2
Confirm plant preparations satisfactory
prior to each period of work and
following changes in plant conditions
or operations.
Record PTW No………………………….
Conditions satisfied as detailed on PTW
and RAMS.
Comment any issues in section 8.1.6 and
review / rectify prior to starting any site
work.
8.1.3
Confirm system healthy and reset by
comparing against information on
LF364003_SCH Sheet 1.
System reset as detailed on
LF364003_SCH Sheet 1.
Comment differences from SCH or if
found in tripped state in section 8.1.6.
8.1.4
Confirm all final element valves
tripped by the initiator under test are
open.
Correct FINAL ELEMENT valve
position and DIAGNOSTICS display at
control room SCADA as detailed on
LF364003_SCH Sheet 2.
Comment differences from SCH in
section 8.1.6.
8.1.5
Initiate and reset each FAILURE
MODE as detailed on LF364003_SCH
Sheets 5 & 6.
Highlight tests completed on controlled
copy of LF364003_SCH Sheets 5 & 6.
ACTION and DIAGNOSTICS as
detailed on LF364003_SCH Sheets 5 &
6.
System Reset as detailed on
LF364003_SCH Sheet 1.
Comment differences from SCH in
section 8.1.6
Failure Mode Functional Testing Continued on page 17