Qualitative / deterministic risk assessment, ALARP, SIL assessment

Qualitative / deterministic risk assessment

Engineering design requirements for hazardous facilities are becoming increasingly challenging, with operators demanding the highest levels of safety integrity as well as higher production throughputs and more flexibility.

Risktec undertakes deterministic assessment to provide a robust demonstration of the adequacy of engineering designs and the effectiveness of safety systems. The aim is to provide a plant or operation with a level of defence that is proportional to the associated risk.

Assessments can demonstrate, for example, that no single failure will compromise the safety function and ensure that best use is made of segregation, redundancy and diversity. Risktec selects the most appropriate techniques to support the deterministic safety assessment, including:

  • Hazard registers and fault schedules
  • Design basis assessment
  • System reliability analysis
  • SIL assessment
  • Specification of minimum safety requirements
  • Specification of trip settings, and limits and conditions of operation
  • Risk assessment matrix
  • Hazard bowtie analysis
  • ALARP assessment and demonstration

"Formal deterministic safety assessment is increasingly being demanded throughout high hazard industries. Our approach delivers safety benefits where they are needed, without excessive cost."

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