CCPS LOPA Independent Protection Layers | AIChE

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CCPS LOPA Independent Protection Layers

You can view the list of LOPA IPLs below. If you'd like to see the details, you'll need to log in as a CCPS member. Learn more about corporate membership.

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  1. Adjustable Movement-Limiting Device
  2. Automatic Explosion Suppression System for Process Equipment
  3. Automatic Fire Suppression System (within process equipment)
  4. Automatic Fire Suppression System for a Room
  5. Automatic Fire Suppression System for Local Application
  6. Buckling Pin Isolation Valve (BPIV)
  7. Buckling Pin Relief Valve
  8. Captive Key/Lock System
  9. Check Valve
  10. Conservation Vacuum and/or Pressure Relief Vent
  11. Continuous Pilot
  12. Continuous Ventilation with Automated Performance Monitoring
  13. Continuous Ventilation without Automated Performance Monitoring
  14. Dikes, Berms, and Bunds
  15. Drainage to Dikes, Berms, and Bunds with Remote Impoundment
  16. Dual Spring-Operated Pressure Relief Valves
  17. Emergency Ventilation Initiated by Safety Controls, Alarms, and Interlocks (SCAI)
  18. End-of-Line Deflagration Arrestor
  19. Excess Flow Valve
  20. Explosion Isolation Valve
  21. Explosion Panels on Process Equipment
  22. Fire-Resistant Insulation and Cladding on Vessel
  23. Frangible Roof on Flat-Bottom Tank
  24. Gas Balance/Adjustable Set Pressure Surge Relief Valve
  25. Human Response to an Abnormal Condition
  26. Human Response to an Abnormal Condition with Multiple Indicators…
  27. In-Line Deflagration Arrestor
  28. In-Line Stable Detonation Arrester
  29. In-Line Unstable Detonation Arrester
  30. Line Containing a Fluid with the Potential to Freeze
  31. Mechanical Overspeed Trip on a Turbine
  32. Mechanically Activated Emergency Shutdown/Isolation Device
  33. Multiple Mechanical Pump Seal System with Seal Failure Detection and Response
  34. Overflow Line Containing a Passive Fluid or with a Rupture Disk
  35. Overflow Line with no Impediment to Flow
  36. Permanent Mechanical Stop that Limits Travel
  37. Personal Protective Equipment (PPE)
  38. Pilot-Operated Pressure Relief Valve
  39. Pipeline Surge Dampening Vessel
  40. Pressure Reducing Regulator
  41. Restrictive Flow Orifice
  42. Rupture Disk
  43. Safety Control Loop
  44. Safety Interlock
  45. SIS Loop
  46. Spring-Operated Pressure Relief Valve
  47. Spring-Operated Pressure Relief Valve with Rupture Disk
  48. Vacuum Breaker
  49. Vent Panels on Enclosures

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