In-place HEPA filter penetration test
We have demonstrated the feasibility of conducting penetration tests on high efficiency particulate air (HEPA) filters as installed in nuclear ventilation systems. The in-place penetration test, which is designed to yield equivalent penetration measurements as the standard DOP efficiency test, is based on measuring the aerosol penetration of the filter installation as a function of particle size using a portable laser particle counter. This in-place penetration test is compared to the current in-place leak test using light scattering photometers for single HEPA filter installations and for HEPA filter plenums using the shroud method. Test results show the in-place penetration test is more sensitive than the in-place leak test, has a similar operating procedure, but takes longer to conduct. Additional tests are required to confirm that the in-place penetration test yields identical results as the standard dioctyl phthalate (DOP) penetration test for HEPA filters with controlled leaks in the filter and gasket and duct by-pass leaks. Further development of the procedure is also required to reduce the test time before the in- place penetration test is practical.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 325065
- Report Number(s):
- UCRL-JC-127230; CONF-960715-; ON: DE98050938; TRN: 99:003632
- Resource Relation:
- Conference: 24. nuclear air cleaning and treatment conference, Portland, OR (United States), 15-18 Jul 1996; Other Information: PBD: 1 Jan 1997
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effect of DOP heterodispersion on HEPA-filter-penetration measurements
Methods of testing HEPA filters with short upstream approaches