55 / 74
Conoco Phillips Energy – Bramhall Terminal
Safety Instrument System – Compliance Document
P & I Design Ltd
DOCUMENT NO: SI297021_RPT
2 Reed Street, Thornaby, UK, TS17 7AF
ISSUE: A DATE: 30.06.11
Tel: + 44 (0)1642 617444
PAGE 8 OF 15
Fax: + 44 (0)1642 616447
www.pidesign.co.ukStage 2 – Safety Instrument Design
Checklist 3 – Components & Sub-Systems
Item
No
BS EN
61511
Clause
Description
Checklist
Yes-No-
N/A
Comments and
References
3.1
11.5.2
11.5.3
Have equipment vendors provided failure rate data in
accordance with BS EN 61508
If not
Is evidence of proven in use satisfied.
Yes
3.2
11.9.2
Have equipment vendors provided proof test methodology
and frequency data in accordance with BS EN 61508.
If not
On what basis is proof testing performed.
Yes
3.3
11.5.4
Do components selected on prior use have a fixed
programming language.
If the answer is yes then:
Can any unused features jeopardize the SIF.
Have all settings being recorded e.g ranges, modes of
operation, etc
n/a
3.4
11.5.5
11.5.6
Is the logic solver programmable.
If yes fully consult BS EN 61511-1 Section 11.5.5, 6 and
Section 12.
No
3.5
11.6
&
11.9.2
Have the following conditions been considered for the
field devices:
Common Cause failures
Material of construction
Plugging
Dirt
Corrosion
Foreign bodies
Freezing
Temperature effects
Pressure
EMC
Yes
3.6
11.6
Have the following conditions been considered for the
final elements:
Shutoff differential
Opening & Closing speed of valves
Leakage
Fire resistance
Yes
3.7
11.6.3
Does each device have its own dedicated wiring.
Yes
3.8
11
Are SIS components identified uniquely.
Yes