Reusability study with organic vapor air-purifying respirator cartridges

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Description

The question often arises about the reusability of organic vapor adsorption beds, such as air- purifying respirator cartridges, after periods of storage without use (airflow). The extremes of practice are: (1) use once and discard or (2) reuse multiple times assuming the protection is still afforded. The goal is to develop data and a model to provide guidance to decide when reuse is acceptable. They have studied the loss of protection of a commercial organic vapor cartridge after storage for varying periods of time. Three vapors (ethyl acetate, methylene chloride, and hexane) were individually loaded onto test cartridges using a ... continued below

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8 p.

Creation Information

Wood, G.O. & Kissane, R. November 1, 1997.

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Description

The question often arises about the reusability of organic vapor adsorption beds, such as air- purifying respirator cartridges, after periods of storage without use (airflow). The extremes of practice are: (1) use once and discard or (2) reuse multiple times assuming the protection is still afforded. The goal is to develop data and a model to provide guidance to decide when reuse is acceptable. They have studied the loss of protection of a commercial organic vapor cartridge after storage for varying periods of time. Three vapors (ethyl acetate, methylene chloride, and hexane) were individually loaded onto test cartridges using a breathing pump. Extents of loading, times of loading, and vapor concentrations were varied. After selected periods of storage the cartridges were again challenged with the same vapor concentration. The increases in concentration of a vapor in the effluent air (simulated breaths) from a cartridge immediately upon reuse depended on the storage period, the extent of loading during initial use, the volatility of the vapor, and the water vapor adsorbed, but not much on the vapor concentration.

Physical Description

8 p.

Notes

OSTI as DE98002926

Source

  • 1997 U.S. Army Edgewood Research, Development and Engineering Center scientific conference on chemical and biological defense research, Aberdeen Proving Ground, MD (United States), 18-21 Nov 1997

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  • Other: DE98002926
  • Report No.: LA-UR--97-4458
  • Report No.: CONF-971163--
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/645463 | External Link
  • Office of Scientific & Technical Information Report Number: 645463
  • Archival Resource Key: ark:/67531/metadc693642

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • November 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

Description Last Updated

  • May 5, 2016, 7:20 p.m.

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Wood, G.O. & Kissane, R. Reusability study with organic vapor air-purifying respirator cartridges, report, November 1, 1997; New Mexico. (digital.library.unt.edu/ark:/67531/metadc693642/: accessed January 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.