Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Realization phase design requirement specification

The SIS safety requirements specification should be developed in association with the non-SIS protection layers. The lEC 61508 standard calls for the overall safety requirement to be defined first in phase 4 followed by an allocation phase 5, which defines the sharing of protection duties across the layers of protection. The final SRS for the safety-instrumented system is then part of the detail design activities for the SIS known in lEC terms as the realization phase (phase 9). This procedure can be rather confusing at first but it appears to be designed to ensure that the basics of the SRS are in place and verified before the design team goes too far with the technical specifications for the SIS. [Pg.111]

See other pages where Realization phase design requirement specification is mentioned: [Pg.38]    [Pg.263]    [Pg.1347]    [Pg.108]    [Pg.75]    [Pg.154]    [Pg.196]    [Pg.101]    [Pg.114]    [Pg.788]    [Pg.10]    [Pg.368]    [Pg.292]    [Pg.277]    [Pg.42]    [Pg.123]   
See also in sourсe #XX -- [ Pg.585 , Pg.586 ]



SEARCH



Design phase

Phase designators

Phase specificity

Realizability

Realizable

Realization

Realizers

Requirement specification

Specific designs

© 2024 chempedia.info