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|a E 1.99:pnnl-27568 vol1 rev0
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|a E 1.99:pnnl-27568 vol1 rev0
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|a pnnl-27568 vol1 rev0
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|a Analysis of Air-Purifying Respirator (APR) Cartridge Performance Testing on Hanford Tanks SX-101 and SX-104.
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|a Richland, Wash. :
|b Pacific Northwest National Laboratory (U.S.) ;
|a Oak Ridge, Tenn. :
|b Distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
|c 2020.
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|a Medium: ED :
|b digital, PDF file.
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|a text
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|a online resource
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|a Published through Scitech Connect.
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|a 07/31/2020.
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|a "pnnl-27568 vol1 rev0."
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|a Nune, Satish K. ; Clayton, Christopher K. ; Liu, Jian ; Freeman, Charles J. ; Brouns, Thomas M. ; Mahoney, Lenna A. ;
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|a USDOE.
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|a Washington River Protection Solutions (WRPS) conducted tests on two types of chemical cartridges for use in air-purifying respirators to determine the period of time that the cartridges would provide adequate performance1 to protect workers when exposed to a mixture of Chemicals of Potential Concern (COPC) from vapors exiting the headspaces of Hanford tanks SX-101 and SX-104. The Occupational Safety and Health Administration (OSHA) considers cartridge testing a valid approach for establishing cartridge change schedules.2 Testing is commonly applied in situations where mixtures of COPCs exist and where other approaches such as manufacturer recommendations and modeling are less reliable. The tests were designed and conducted to ensure measurement and/or control of the key variables OSHA identified as important to estimate the cartridge service life, including temperature, humidity, COPC concentration, breathing rate, and cartridge adsorption capacity. Testing was conducted from June 16-17, 2017, and June 23-24, 2017, using headspace vapors from Hanford tank SX-104 and Hanford tank SX-101, respectively. Headspace vapors under static conditions were fed to a respirator cartridge test stand developed by WRPS in collaboration with HiLine Engineering (Richland, Washington). Multipurpose respirator cartridges, SCOTT 7422-SD1 and SCOTT 7422-SC1 (SCOTT Safety, Monroe, North Carolina), were assessed on separate days. Sample media (sorbent tubes) were used to collect samples of the vapor stream entering and exiting the respirator cartridges, and subsequently were analyzed for COPC concentrations. Pacific Northwest National Laboratory was tasked with conducting an independent analysis of the analytical results and making recommendations based on the results for respiratory cartridge performance and service life. The key conclusions from the analysis are described below.
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|b AC05-76RL01830.
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|a Pacific Northwest National Laboratory (U.S.).
|4 res.
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|a United States.
|b Department of Energy.
|b Office of Scientific and Technical Information
|4 dst.
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|u https://www.osti.gov/servlets/purl/1770334
|z Full Text (via OSTI)
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|b 04-01-21
|c 04-01-21
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