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Title: Comparative study of HEPA filter efficiencies when challenged with thermal- and air-jet-generated di-2-ethylhexyl sebecate, di-2-ethylhexyl phthalate, and sodium chloride

Abstract

Respirators fitted with high-efficiency particulate (HEPA) cartridge filters are designed to remove dust, fumes, mists, and airborne particulate radionuclides. If these filters are to be reused, a Quality Assurance (QA) program must be established to ensure that filter efficiency remains greater than 99.97%. The standard method for performing QA testing is to challenge the filter with a thermally generated aerosol of 0.3-..mu..m-diam di-2-ethylhexyl phthalate (DEHP). Because of potential toxicological and other problems associated with the use of monodisperse DEHP, an investigation to study measured filter efficiencies on a HEPA respirator filter population, using several recommended replacement aerosols, has been conducted. Aerosols compared in this study were thermally generated di-2-ethylhexyl sebecate (DEHS), thermally generated DEHP, air-jet-generated DEHS, and air-jet-generated salt (NaCl). The study also focused on determining compatibility for parallel use of aerosols generated for respirator-fit testing for use in QA filter testing. Results indicate that a polydisperse air-jet-generated aerosol of DEHS can substitute for thermally generated DEHP as a method of providing QA testing of HEPA respirator filters and that equipment used in the study designed for respirator quantitative-fit testing can easily be modified to perform this function. 30 refs., 28 figs., 11 tabs.

Authors:
; ; ;
Publication Date:
Research Org.:
Los Alamos National Lab., NM (USA)
OSTI Identifier:
5862167
Report Number(s):
NUREG/CR-4111; LA-9985-MS
ON: TI85010353
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; AIR FILTERS; PERFORMANCE TESTING; AEROSOLS; EFFICIENCY; EXPERIMENTAL DATA; PHTHALATES; SEBACIC ACID; SODIUM CHLORIDES; ALKALI METAL COMPOUNDS; CARBOXYLIC ACID SALTS; CARBOXYLIC ACIDS; CHLORIDES; CHLORINE COMPOUNDS; COLLOIDS; DATA; DICARBOXYLIC ACIDS; DISPERSIONS; EQUIPMENT; FILTERS; HALIDES; HALOGEN COMPOUNDS; INFORMATION; NUMERICAL DATA; ORGANIC ACIDS; ORGANIC COMPOUNDS; POLLUTION CONTROL EQUIPMENT; SODIUM COMPOUNDS; SOLS; TESTING; 420202* - Engineering- Protective Structures & Equipment

Citation Formats

Kerschner, III, H F, Ettinger, H J, DeField, J D, and Beckman, R. Comparative study of HEPA filter efficiencies when challenged with thermal- and air-jet-generated di-2-ethylhexyl sebecate, di-2-ethylhexyl phthalate, and sodium chloride. United States: N. p., 1984. Web.
Kerschner, III, H F, Ettinger, H J, DeField, J D, & Beckman, R. Comparative study of HEPA filter efficiencies when challenged with thermal- and air-jet-generated di-2-ethylhexyl sebecate, di-2-ethylhexyl phthalate, and sodium chloride. United States.
Kerschner, III, H F, Ettinger, H J, DeField, J D, and Beckman, R. 1984. "Comparative study of HEPA filter efficiencies when challenged with thermal- and air-jet-generated di-2-ethylhexyl sebecate, di-2-ethylhexyl phthalate, and sodium chloride". United States.
@article{osti_5862167,
title = {Comparative study of HEPA filter efficiencies when challenged with thermal- and air-jet-generated di-2-ethylhexyl sebecate, di-2-ethylhexyl phthalate, and sodium chloride},
author = {Kerschner, III, H F and Ettinger, H J and DeField, J D and Beckman, R},
abstractNote = {Respirators fitted with high-efficiency particulate (HEPA) cartridge filters are designed to remove dust, fumes, mists, and airborne particulate radionuclides. If these filters are to be reused, a Quality Assurance (QA) program must be established to ensure that filter efficiency remains greater than 99.97%. The standard method for performing QA testing is to challenge the filter with a thermally generated aerosol of 0.3-..mu..m-diam di-2-ethylhexyl phthalate (DEHP). Because of potential toxicological and other problems associated with the use of monodisperse DEHP, an investigation to study measured filter efficiencies on a HEPA respirator filter population, using several recommended replacement aerosols, has been conducted. Aerosols compared in this study were thermally generated di-2-ethylhexyl sebecate (DEHS), thermally generated DEHP, air-jet-generated DEHS, and air-jet-generated salt (NaCl). The study also focused on determining compatibility for parallel use of aerosols generated for respirator-fit testing for use in QA filter testing. Results indicate that a polydisperse air-jet-generated aerosol of DEHS can substitute for thermally generated DEHP as a method of providing QA testing of HEPA respirator filters and that equipment used in the study designed for respirator quantitative-fit testing can easily be modified to perform this function. 30 refs., 28 figs., 11 tabs.},
doi = {},
url = {https://www.osti.gov/biblio/5862167}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {12}
}

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