Screening tests of representative nuclear power plant components exposed to secondary environments created by fires

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This report presents results of screening tests to determine component survivability in secondary environments created by fires, specifically increased temperatures, increased humidity, and the presence of particulates and corrosive vapors. Additionally, chloride concentrations were measured in the exhaust from several of the tests used to provide fire environments. Results show actual failure or some indication of failure for strip chart recorders, electronic counters, an oscilloscope amplifier, and switches and relays. The chart recorder failures resulted from accumulation of particulates on the pen slider mechanisms. The electronic counter experienced leakage current failures on circuit boards after the fire exposure and exposure ... continued below

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Jacobus, M.J. June 1, 1986.

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This report presents results of screening tests to determine component survivability in secondary environments created by fires, specifically increased temperatures, increased humidity, and the presence of particulates and corrosive vapors. Additionally, chloride concentrations were measured in the exhaust from several of the tests used to provide fire environments. Results show actual failure or some indication of failure for strip chart recorders, electronic counters, an oscilloscope amplifier, and switches and relays. The chart recorder failures resulted from accumulation of particulates on the pen slider mechanisms. The electronic counter experienced leakage current failures on circuit boards after the fire exposure and exposure to high humidity. The oscillosocpe amplifier experienced thermal-related drift as high as 20% before thermal protective circuitry shut the unit down. In some cases, switches and relays experienced high contact resistances with the low voltages levels used for the mesurements. Finally, relays tested to thermal failure experienced various failures, all at temperatures ranging from 150/sup 0/C to above 350/sup 0/C. The chloride measurements show that most of the hydrogen chloride generated in the test fires is combined with particulate by the time it reaches the exhaust duct, indicating that hydrogen chloride condensation may be less likely than small scale data implies. 13 refs., 36 figs.

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NTIS, PC A04/MF A01 - GPO.

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  • Other: TI86015205
  • Report No.: NUREG/CR-4596
  • Report No.: SAND-86-0394
  • Grant Number: AC04-76DP00789
  • DOI: 10.2172/5342369 | External Link
  • Office of Scientific & Technical Information Report Number: 5342369
  • Archival Resource Key: ark:/67531/metadc1072593

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Office of Scientific & Technical Information Technical Reports

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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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  • June 1, 1986

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  • Feb. 4, 2018, 10:51 a.m.

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  • May 18, 2018, 3:47 p.m.

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Jacobus, M.J. Screening tests of representative nuclear power plant components exposed to secondary environments created by fires, report, June 1, 1986; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc1072593/: accessed February 17, 2019), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.