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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 19 OF 22
Fax: + 44 (0)1642 616447
www.pidesign.co.uk10
AS LEFT FUNCTIONAL PROOF TESTING PROCEDURE
10.1 Drexelbrook Sensor As left Manufacturers Test Terminal Functional Testing
Purpose of Test
To verify the SIF operates correctly following system disturbance.
SIF is SENSOR ELEMENT trips & inhibits the FINAL ELEMENT(s) to the safe state as specified.
Method of activation is by operation of the manufacturers test facility
To verify the correct DIAGNOSTICS information.
If sensing element defective the tank could overfill if a demand is made on the overfill protection
system.
If response target time is exceeded the tank could overfill following demand.
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 3.
Step
Method of Test
Acceptance Criteria
Pass (
)
Fail (x)
Initial
10.1.1
Review procedure with operations and
testing personnel.
All personnel familiarised with the
scope of works and responsibilities
.
Comment any issues in section 10.1.7
and review / rectify prior to starting test.
10.1.2
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 10.1.7
and review / rectify prior to starting any
site work.
10.1.3
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 10.1.7.
10.1.4
Confirm all final element valves
tripped by the initiator under test are
open.
Correct FINAL ELEMENT valve
position and DIAGNOSTICS as detailed
on LF364003_SCH Sheet 2.
Comment differences from SCH in
section 10.1.7.
Drexelbrook Sensor As left Manufactures Test Terminal Functional Testing Continued on page 20