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CH-TRAMPAC - Waste Isolation Pilot Plant - U.S. Department of ...

CH-TRAMPAC - Waste Isolation Pilot Plant - U.S. Department of ...

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<strong>CH</strong>-<strong>TRAMPAC</strong> Document Rev. 2, May 20054.4 Chemical CompatibilityThe lists <strong>of</strong> allowable materials in Table 4.3-1 through Table 4.3-8 restrict the chemicalcomposition <strong>of</strong> the payload. The basis for evaluating chemical compatibility is theU.S. Environmental Protection Agency (EPA) document “A Method for Determining theCompatibility <strong>of</strong> Hazardous <strong>Waste</strong>s” (EPA-600/2-80-076). 1 This method provides a systematicmeans <strong>of</strong> analyzing the chemical compatibility for specific combinations <strong>of</strong> chemical compoundsand materials. Any incompatibilities between the payload and the packaging shall be evaluatedseparately if not covered by the EPA method. 1 As described in Appendix 6.1 <strong>of</strong> the <strong>CH</strong>-TRUPayload Appendices 2 , the EPA method classifies individual chemical compounds into chemicalgroups and identifies the potential adverse reactions resulting from incompatible combinations <strong>of</strong>the groups.4.4.1 RequirementsChemical compatibility shall be ensured for the following four conditions:• Chemical compatibility <strong>of</strong> the waste form within each individual payload container• Chemical compatibility between contents <strong>of</strong> payload containers during hypotheticalaccident conditions• Chemical compatibility <strong>of</strong> the waste forms with the TRUPACT-II and HalfPACT ICV• Chemical compatibility <strong>of</strong> the waste forms with the TRUPACT-II and HalfPACT O-ringseals.4.4.2 Methods <strong>of</strong> Compliance and VerificationCompatibility <strong>of</strong> all waste material types has been demonstrated for transport in theTRUPACT-II and HalfPACT using the chemicals listed in Table 4.3-1 through Table 4.3-8. Therestrictions imposed on the chemical constituents <strong>of</strong> the content codes approved by the WIPP<strong>CH</strong>-TRU Payload Engineer ensure compliance with the compatibility requirements (see alsoAppendices 6.1, 6.2, 6.3, and 6.4 <strong>of</strong> the <strong>CH</strong>-TRU Payload Appendices 2 ). The chemical list foreach content code is formally documented by the site.1 Hatayama, H.K., Chen, J.J., de Vera, E.R., Stephens, R.D., and Storm, D.L., 1980, A Method for Determining theCompatibility <strong>of</strong> Hazardous <strong>Waste</strong>s, EPA-600/2-80-076, U.S. Environmental Protection Agency, Cincinnati, Ohio.2 U.S. <strong>Department</strong> <strong>of</strong> Energy (DOE), <strong>CH</strong>-TRU Payload Appendices, U.S. <strong>Department</strong> <strong>of</strong> Energy, Carlsbad FieldOffice, Carlsbad, New Mexico.4.4-1

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