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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 14 OF 22
Fax: + 44 (0)1642 616447
www.pidesign.co.ukStep
Method of Test
Acceptance Criteria
Pass (
)
Fail (x)
Initial
7.3.5
Remove probe from tank and touch
end against tank top.
Valve action found smooth with full
operation of valve stem.
Comment poor action / sticking in
section 7.3.8.
Valve status ESD Tripped on Local
display.
Comment failure in section 7.3.8.
System trips closing and inhibiting from
reopening FINAL ELEMENT valves and
initiating DIAGNOSTICS as detailed on
LF364003_SCH Sheets 2 & 4.
Comment differences from SCH in
section 7.3.8
Time from test initiation to trip
activation <=2 seconds.
Comment failures in section 7.3.8.
XV Closing times for overfill and surge
protection with set limits as detailed on
LF364003_SCH Sheet 2.
Comment failures in section 7.3.8.
Record Physical Closing Time and
Physical Travel Time.
7.3.6
Confirm probe length correct and
inspection condition. Replace probe in
tank as found.
CRITICAL Step : Independent
confirmation required to verify probe
replaced in tank as found.
System remains tripped inhibiting from
reopening FINAL ELEMENT valves.
Independent verification to countersign
LF364003_SCH to confirm as found
replacement.
Comment failure in section 7.3.8.
7.3.7
Activate system associated Bund reset
and confirm valves enabled by
opening and closing.
System reset as detailed on
LF364003_SCH Sheet 1.
Comment differences from SCH in
section 7.3.8.
Drexelbrook Sensor As Found Physical test Functional Testing Continued on page 15