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Clean Spaces

Dive into the world of cleanrooms, HEPA filters, and air filtration systems. Learn about industry standards, filter mechanisms, and the importance of integrity testing for maintaining a pristine environment. Discover how to design and maintain a facility that meets the highest air cleanliness levels.

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Clean Spaces

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  1. Clean Spaces

  2. Do you have a cleanroom or a cleanroom A cleanroom is what your mother always wanted from you And a cleanroom is what we are discussing today

  3. What is a Cleanroom? By definition a “Cleanroom” is: • A room in which the air supply, air distribution, filtration of air supply, materials of construction, and operating procedures are regulated to control particle concentrations so that appropriate air cleanliness levels, as defined in FED-STD-209, can be met. (IEST-RP-CC006.2)

  4. What is a Cleanroom? By definition a “Cleanroom” is: “A room in which the concentration of airborne particles is controlled and which is constructed and used in a manner to minimize theintroduction, generation and retention of particles inside the room, and in which the relevant parameters, e.g. temperature, humidity and pressure are controlled as necessary” --ISO-14644-1

  5. History of HEPA Filters High Efficiency Particulate Air filter

  6. To Be A HEPA Filter “Throwaway extended-medium dry-type filter in rigid frame having minimum particle-collection efficiency of 99.97% (that is a maximum particle penetration of of 0.03%) for 0.3 µm particles of thermally-generated DOP particles or specified alternative aerosol.” --IEST

  7. Background on HEPA Filters

  8. Background on HEPA Filters Atomic Energy Commission Pharmaceutical Microelectronics Food Processing Medical Device

  9. Background on HEPA Filters

  10. 99 OVERALL EFFICIENCY 98 95 70 60 50 40 30 20 0.01 0.1 1.0 10.0 Typical Air Filtration Principles RELATIVE EFFECT OF PARTICLE COLLECTION MECHANISMS COLLECTION EFFICIENCY(%) DIFFUSION INTERCEPTION IMPACTION PARTICLE DIAMETER (MICRONS)

  11. 99.999 99.99 99.97 99 90 50 10 0.01 0.1 1.0 10.0 HEPA Filter Mechanisms THEORETICAL HEPA FILTER COLLECTION EFFICIENCY 0.3µm COLLECTION EFFICIENCY(%) PARTICLE DIAMETER (MICRONS)

  12. 99.999% Ultra Low Penetration Air

  13. 99.9999% Super Ultra Low Penetration Air

  14. Type of HEPA Filters Testing at the FACTORY for grading of the filters – IEST-RP-CC001.4 A, B, C, D, E, F, G H, I, J, K

  15. Industry Standards

  16. In-Situ Integrity Testingwhat is the difference between hand scanned and total penetration ? • total penetration will take a 1cfm (28.3L/m) sample from the entire flow volume of the tested filter -- approximately a 1:750 ratio • hand scanned will sample more on an-- approximate 1:1 ratio

  17. HEPA Filter Integrity Testing

  18. Why Test a HEPA Filter

  19. HEPA Filter Integrity TestingMethodology • In-Place Integrity (full media scan) also includes joints, frames, ceiling, gaskets and other seals

  20. HEPA Filter Integrity Testing Laskin nozzle generator

  21. HEPA Filter Integrity Testing thermal generator for challenge

  22. Who Designed Your Facility?

  23. Summary Systems using HEPA or ULPA filters that are both factory and in-situ tested provide the cleanest air to the space.

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