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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 9 OF 22
Fax: + 44 (0)1642 616447
www.pidesign.co.uk7
AS FOUND FUNCTIONAL PROOF TESTING PROCEDURE
7.1 Valve Performance As Found
Purpose of Test
To verify the correct undisturbed operation of FINAL ELEMENT valves as found prior to multiple operation
during SIF testing.
To verify correct DIAGNOSTICS information.
To verify correct Manual and Emergency Shutdown operation of FINAL ELEMENT valves.
If this test is not performed ‘as found’ undetected faults may not be revealed.
If valve target time is exceeded the tank could overfill following shutdown.
If valve target time is reduced the dockline could overpressure (surge) following shutdown.
Diagnostic information not displayed correctly could result in undetected tank overfill, system
unavailability or incorrect operational response.
Valves not operating correctly in manual or following Site ESD could initiate a tank overfill and
may not close if a demand is made on the overfill protection system.
Controlled Copy Documentation Required
LF364003_SCH - LFS-SIS1 Testing Matrix
Record all results on Sheet 2.
Step
Method of Test
Acceptance Criteria
Pass (
)
Fail (x)
Initial
7.1.1
Review procedure with operations and
testing personnel.
All personnel familiarised with the scope
of works and responsibilities
.
Comment any issues in section 7.1.8 and
review / rectify prior to starting testing.
7.1.2
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 7.1.8 and
review / rectify prior to starting any site
work.
7.1.3
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
LF364003_SCH or if found in tripped
state in section 7.1.8.
7.1.4
Open each valve under test.
Sections 7.1.4 to 7.1.7 to be completed for
each valve under test individually prior to
starting next valve.
Valve physical action found smooth with
full operation of valve stem.
Comment poor action / sticking in section
7.1.8.
Opening time – No specific requirement.
Comment times >115 seconds in section
7.1.8.
Correct FINAL ELEMENT valve position
and DIAGNOSTICS as detailed on
LF364003_SCH Sheet 2.
Comment differences from SCH in section
7.1.8.
Valve Performance As Found Continued on page 10