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-27_A01 the methodology used to determine the Safety Integrity Level (SIL) for each Safety Instrumented Function (SIF) (e.g., risk graph or Layer of Protection Analysis (LOPA)) is documented.
  Assessment rigor: 1
  Origin: SCF Created
• EMB-27_A02 a target Safety Integrity Level (SIL) is assigned to each Safety Instrumented Function (SIF) based on the risk reduction required, as determined by a documented hazard and risk assessment.
  Assessment rigor: 1
  Origin: SCF Created
• EMB-27_A03 the achieved Safety Integrity Level (SIL) of each Safety Instrumented Function (SIF) is verified (e.g., through Probability of Failure on Demand (PFD) calculation and architectural constraints) to meet or exceed the assigned target SIL.
  Assessment rigor: 2
  Origin: SCF Created
• EMB-27_A04 Safety Integrity Level (SIL) assignments are re-validated at a defined frequency and when the process, Safety Instrumented System (SIS) design or operating conditions change.
  Assessment rigor: 2
  Origin: SCF Created

Prepojené úlohy

• Secure Controls Framework -

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