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Immingham Storage Co Ltd – Immingham East Terminal - No4 Switchroom Tank Overfill Safety Instrument System
Logic Panel Factory Acceptance Test Procedure
P & I Design Ltd
DOCUMENT NO: SI483005_RPT
2 Reed Street, Thornaby, UK, TS17 7AF
ISSUE: A DATE: 05.03.13
Tel: + 44 (0)1642 617444
PAGE 15 OF 19
Fax: + 44 (0)1642 616447
www.pidesign.co.uk4.2.7 SAFETY RELAY
Equipment Required
Multi-meter, hand tools, links, yellow highlighter, red pen, SI277001_SPC E&H level switch probe.
Purpose of Test
To verify correct healthy functionality of each individual safety relay.
To verify correct healthy to trip condition of each individual safety relay.
To verify correct reset actions of each individual safety relay.
To verify correct BPCS interface status.
To verify correct lamp status and lamp test action.
To verify the functionality of a fuse failure.
Method Of Test
4.2.7.1
Simulate level switch probe healthy by connecting an E&H Liquiphant
level probe as Specification SI277001_SPC to incoming terminals. Ensure the
probe tip is not covered and the internal switch unit is set to max/>0.7.
4.2.7.2
Simulate all valve limit switch feedback as valve closed by applying a
link to incoming terminals.
4.2.7.3
Momentary depress reset pushbutton, confirm all safety relays energise.
4.2.7.4
Confirm safety relay BPCS status on outgoing terminals, closed circuit
whilst safety relay energised, open circuit whilst safety relay de-energised.
4.2.7.5
Confirm safety relay lamp extinguished whilst relay energised,
illuminated whilst relay de-energised, confirm safety relay lamp illuminates whist
lamp test pushbutton depressed and relay energised.
4.2.7.6
Simulate a high level by immersing probe tip. Confirm safety relay de-
energises.
4.2.7.7
Simulate level switch probe healthy by uncovering the probe tip.
Confirm safety relay remains de-energised.
4.2.7.8
Simulate associated valve limit switch feedback as valve not closed by
removing link applied to incoming terminals.
4.2.7.9
Momentary depress reset pushbutton, confirm safety relays remains de-
energised.
4.2.7.10
Simulate associated valve limit switch feedback as valve closed by
applying a link to incoming terminals.
4.2.7.11
Momentary depress reset pushbutton, confirm safety relay energised.
4.2.7.12
Remove and replace associated fuse for each safety relay, confirm relay
de-energised whilst removed.
Result
1.
Tank 561 R250.
2.
Tank 564 R330.
3.
Tank 568 R410.
Actions/Comments
Sign
Date
Tested by