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What Is Process Safety

Process Safety is a term commonly used in the process industries to describe the safety requirements related to design and operation of hazardous processes.

This article aims to give a highlight on some key areas of the subject matter. The areas will include:

  • Elements of the process safety management system and
  • Some process safety areas (Hazid, Hazop, LOPA, DSEAR, etc)

If you need more on process safety, you need to get trained.

 

Read Also: How to use the risk assessment matrix effectively

14 Elements Of The Process Safety Management

14 elements generally makes up the process; the elements are interlinked and also interdependent. The elements are:

  1. Process Safety Information
  2. Process Hazard Analysis
  3. Operating Procedures
  4. Training
  5. Contractors
  6. Mechanical Integrity
  7. Hot Work
  8. Management of Change
  9. Incident Investigation
  10. Compliance Audits
  11. Trade Secrets
  12. Employee Participation
  13. Pre-startup Safety Review
  14. Emergency Planning and Response

Some Process Safety Areas Includes:

  • Hazard Review (PHR) studies
  • HAZOP studies
  • HAZID Studies
  • LOPA (Layer of protection analysis)
  • DSEAR (Dangerous Substances and Explosive Atmospheres Regulations)
  • Quantitative Risk Assessment (QRA) that will assess the risk from all process failures as well as fixed plant risk (parts count QRA).

The Quantitative Risk Assessment (QRA) process includes:

  1. Fault Tree Analysis
  2. Event Tree Analysis
  3. Process Failures- QRA
  4. Part Count-QRA
  5. SIL QRA ( see also SIS/ Functional Safety)
  6. FMEA/FMECA/ FMEDA
  7. Human Failure Analysis
  8. Individual Risk Contours
  9. Societal Risk Implications, etc.

 

Read Also: 6 Methods of risk assessment you should know

Common Approach For Project Process Safety Management

The six stage hazard study is a common approach often adopted.

The stages include:

1. Concept: Preliminary Hazard Studies
2. FEED: HAZID/Coarse HAZOP, LOPA, QRA, DSEAR
3. EPC: Final HAZOP, LOPA, DSEAR
4. Commissioning: Verification of safety systems performance
5. Handover and Operations: Further verification and overall validation of safety elements
6. Continued Safe Operations: A hazard study is usually carried out after 6 months of process operation to ensure suitable performance of safety related elements has been achieved.

 

NOTE: This process can be tailored to suit any project by using a more comprehensive list of studies.

 

See related document (OSHA)

The subject matter is a broad area in safety management. If you need to be well versed with it, you need to get trained.

 

Read Also: What is fire risk assessment: How it is done

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