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Guidance in ISA TR84.00.09:2013
Security Countermeasures Related To Safety Instrumented Systems (SIS)
The scope of ISA TR84.00.09:2013 is to address and provide guidance as to the
countermeasures used to reduce the likelihood of security threats to the SIS.
This relates to cyber security from both inside and outside the plant boundary.
It maps on to the “structure” of IEC 61511.
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Functional Safety Management (Clause 5)
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Hazard and Risk Analysis (Clause 8)
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Allocation of Safety Layers to protection layers (Clause 9)
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Safety Requirement Specification (Clause 10)
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Design and Engineering of the SIS (Clauses 11,12)
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Installation, Commissioning & Validation (Clause 14,15)
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Operation & Maintenance (Clause 16)