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Immingham Storage Co Ltd – Immingham East Terminal
IME-SIS1 - Safety Instrument System Design
P & I Design Ltd
DOCUMENT NO: SI277001_RPT
2 Reed Street, Thornaby, UK, TS17 7AF
Tel: + 44 (0)1642 617444
Fax: + 44 (0)1642 616447
www.pidesign.co.ukAppendix 4
Valve PFD Table
Note 1:
MTTR, 8 hours.
Proof Test Interval, 1 year
Note 2:
Partial Stroke Testing
Note 3:
No Partial Stroke Testing
Note 4:
MTTR 72 hours.
Proof Test Interval, 1 year
Data Supplied
Exida Certificate: Pekos 090168 P0006 C01
Valve
Manufacturer
Valve Type
Certification SFF (Partial
Stroke Test)
SFF (No Partial
Stroke Test)
Data Type PFD
Dafram
Trunnion
TUV
91%
65.7%
Full PFD
Data
1.12 x 10
-4
(notes
1,2)
4.43 x 10
-4
(notes
1,3)
Dafram
Floating Ball TUV
97.7%
91%
Full PFD
Data
2.21 x 10
-6
(note 1,2)
8.81 x 10
-6
(note 1,3)
Pekos
Floating Ball Pekos
81%
66%
Exida Data 1.33 x 10
-3
(note2, 4)
Perar
Trunnion
Perar
?
89%?
Company
Data
8.04 x 10
-7
(note 1)
Worcester
Worcester
?
90%?
Company
Data
1.32 x 10
-6
(note 1)
Neway
All
Neway
?
85%
Company
Data
4.67 x 10
-5
(note 1)