emerson - best practices in sis documentation
TRANSCRIPT
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Best Practices in SISDocumentation
Ed Marszal, President, Kenexis
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Presenters
Ed Marszal
Gary Hawkins
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Introduction
Safety Instrumented System Design per IS S!"#$ is%e&'ming a &'mm'n pra&ti&e
P''r d'&umentati'n is %eing generated due t'
safety &ase# mentality
(urrent pra&ti&es ign're audien&e 'f d'&uments andg''d pra&ti&es# f'r spe&ifi&ati'ns in general
$ )SI *IS !"++-./" 0IE( 1-2--.M'd3
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FEED Phase SIS Documents
4ist 'f Safety Instrumented 5un&ti'ns 0SI53
Gr'uping 'f Instrumented Pr'te&ti6e 5un&ti'ns 0IP53
7 Gr'up %y e8uipment 'r pr'&ess
9 ('mpress'rs
9 :ea&t'rs
9 5ired Heaters
P;ID representati'n 'f SI5
4'gi& des&ripti'n
7 &ause and effe&t ta%les
7
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Preliminary Design Steps
SI5 4ist s='uld %e pre&urs'r t' SI4 sele&ti'n H?@P*4@P wit='ut kn'wledge 'f typi&al SI5 leads
t' err'rs
H?@P is a final &=e&k 'n a g''d design, n't a
design task >ypi&al SI5 %ased 'n experien&e, standards, &'des,
and Audgment
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Instrumented Protective Function Groups
Gr'up instruments t'get=er t=at are fun&ti'nallyrelated
>ypi&ally %ased ar'und maA'r e8uipment
7 ('mpress'rs
7 5ired Heaters
7 :ea&t'rs
>ypi&ally &'ntains multiple SI5
ls' &an &'ntain n'n.SI5 instruments and l'gi&
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Typical Plant Groupings
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IPF Grouping for Separator
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Emers'n SIS 4ife&y&le 'rk%''k
7 t Delta B SIS