Assessment Objectives

In addition to relevant policies, standards and procedures, the assessor shall examine, interview, and/or test to determine if appropriately scoped evidence exists to support the claim that:

• EMB-25_A01 hazardous processes requiring a Safety Instrumented System (SIS) are identified through a documented hazard and risk assessment (e.g., Hazard and Operability study (HAZOP) or Layer of Protection Analysis (LOPA)).
  Assessment rigor: 1
  Origin: SCF Created
• EMB-25_A02 a Safety Instrumented System (SIS) automatically monitors identified hazardous processes for conditions that could lead to a hazardous event.
  Assessment rigor: 1
  Origin: SCF Created
• EMB-25_A03 the Safety Instrumented System (SIS) automatically takes control action to bring the hazardous process to a safe state when a hazardous condition is detected.
  Assessment rigor: 1
  Origin: SCF Created
• EMB-25_A04 the Safety Instrumented System (SIS) is functionally independent of the Basic Process Control System (BPCS) so that a failure of the control system does not disable the safety function.
  Assessment rigor: 2
  Origin: SCF Created
• EMB-25_A05 the proof test interval for the Safety Instrumented System (SIS) is defined.
  Assessment rigor: 3
  Origin: SCF Created
• EMB-25_A06 the Safety Instrumented System (SIS) is proof tested at the defined interval and the results, including any failures found, are documented.
  Assessment rigor: 2
  Origin: SCF Created

Verknüpfte Vorgänge

• Secure Controls Framework -

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