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Masoneilan SVI II ESD Installation and Maintenance Manual
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© 2017 Baker Hughes, a GE company, LLC. All rights reserved.
Figure 73 PST Benefits
PS
T I
m
proves
R
isk
R
eduction
F
act
or (
RRF)
and
P
ro
babil
ity
of
F
ailur
e on
D
emand
(P
FD
)
Does
Not Disturb the
Pr
ocess
Incr
eases Duration between
Full Pr
oof
Te
sting
of ESD’s
Ca
n R
edu
ce
the
N
umbe
r o
f r
equi
red
V
alv
es
fo
r th
e
SIF
PFD No PST
PFD with PST
Valve is f
ully str
ok
ed (Full T
est)
Ye
ar
s
12
Risk
SI
L 1
SI
L 2
SI
L 3
Содержание SVI II ESD
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