Position for determining gas-phase volatile organic compound concentrations in transuranic waste containers. Revision 2

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In the conditional no-migration determination (NMD) for the test phase of the Waste Isolation Pilot Plant (WIPP), the US Environmental Protection Agency (EPA) imposed certain conditions on the US Department of Energy (DOE) regarding gas phase volatile organic compound (VOC) concentrations in the void space of transuranic (TRU) waste containers. Specifically, the EPA required the DOE to ensure that each waste container has no layer of confinement that contains flammable mixtures of gases or mixtures of gases that could become flammable when mixed with air. The EPA also required that sampling of the headspace of waste containers outside inner layers ... continued below

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79 p.

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Connolly, M.J.; Liekhus, K.J.; Djordjevic, S.M.; Loehr, C.A. & Spangler, L.R. June 1, 1998.

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Description

In the conditional no-migration determination (NMD) for the test phase of the Waste Isolation Pilot Plant (WIPP), the US Environmental Protection Agency (EPA) imposed certain conditions on the US Department of Energy (DOE) regarding gas phase volatile organic compound (VOC) concentrations in the void space of transuranic (TRU) waste containers. Specifically, the EPA required the DOE to ensure that each waste container has no layer of confinement that contains flammable mixtures of gases or mixtures of gases that could become flammable when mixed with air. The EPA also required that sampling of the headspace of waste containers outside inner layers of confinement be representative of the entire void space of the container. The EPA stated that all layers of confinement in a container would have to be sampled until DOE can demonstrate to the EPA that sampling of all layers is either unnecessary or can be safely reduced. A test program was conducted at the Idaho National Engineering and Environmental Laboratory (INEEL) to demonstrate that the gas phase VOC concentration in the void space of each layer of confinement in vented drums can be estimated from measured drum headspace using a theoretical transport model and that sampling of each layer of confinement is unnecessary. This report summarizes the studies performed in the INEEL test program and extends them for the purpose of developing a methodology for determining gas phase VOC concentrations in both vented and unvented TRU waste containers. The methodology specifies conditions under which waste drum headspace gases can be said to be representative of drum gases as a whole and describes a method for predicting drum concentrations in situations where the headspace concentration is not representative. The methodology addresses the approach for determining the drum VOC gas content for two purposes: operational period drum handling and operational period no-migration calculations.

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79 p.

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INIS; OSTI as DE98057352

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  • Other Information: PBD: Jun 1998

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  • Other: DE98057352
  • Report No.: INEEL--95/0109-Rev.2
  • Grant Number: AC07-94ID13223
  • DOI: 10.2172/663400 | External Link
  • Office of Scientific & Technical Information Report Number: 663400
  • Archival Resource Key: ark:/67531/metadc702841

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Creation Date

  • June 1, 1998

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • July 19, 2016, 12:28 p.m.

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Connolly, M.J.; Liekhus, K.J.; Djordjevic, S.M.; Loehr, C.A. & Spangler, L.R. Position for determining gas-phase volatile organic compound concentrations in transuranic waste containers. Revision 2, report, June 1, 1998; Idaho Falls, Idaho. (digital.library.unt.edu/ark:/67531/metadc702841/: accessed December 10, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.