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Title: The Road to Re-certification: WIPP TRU Waste Inventory

The Waste Isolation Pilot Plant (WIPP), located near Carlsbad, New Mexico, is a deep geologic repository for the disposal of transuranic (TRU) wastes generated by atomic energy defense activities. The WIPP Land Withdrawal Act (LWA) [1] requires the U.S. Department of Energy (DOE) to submit documentation to the U.S. Environmental Protection Agency (EPA) that demonstrates WIPP's continuing compliance with the disposal regulations in Title 40 of the Code of Federal Regulations (CFR) Part 191 Subparts B and C, not later than five years after initial receipt of waste for disposal at the repository, and every five years thereafter until the decommissioning of the facility is completed. On May 18, 1998, after review of the Compliance Certification Application (CCA) (63 FR 27405), the EPA certified that the WIPP did comply with the final disposal regulations and criteria of 40 CFR parts 191 and 194. On March 26, 1999, the first receipt of contact-handled (CH) TRU waste was received at WIPP thus initiating the 5-year countdown to the first re-certification. Five years after the first receipt of waste at WIPP, on March 26, 2004, the DOE submitted a Compliance Re-certification Application (CRA) [2]. The CRA includes TRU waste inventory as a keymore » factor. The TRU waste inventory defines what is expected to be emplaced in the repository; and, therefore, how the performance of the repository will be affected. Performance of the WIPP is determined via the Performance Assessment (PA), a set of complex algorithms used to model the long-term performance of the repository. The TRU waste inventory data that are important to this assessment include: 1) volumes of stored, projected and emplaced waste; 2) radionuclide activity concentrations; 3) waste material parameter densities; 4) estimates of the masses of chelating agents; 5) estimates of the oxyanions; 6) estimates of expected cement masses; and 7) estimates of the types and amounts of materials that will be used to emplace the waste. The data that are collected and maintained as the TRU waste inventory provide the waste source term used in the PA to model long-term repository performance. (authors)« less
Authors:
; ; ; ;  [1]
  1. Los Alamos National Laboratory -Carlsbad Operations, 115 N. Main St., Carlsbad, NM 88220 (United States)
Publication Date:
OSTI Identifier:
21210680
Report Number(s):
INIS-US--09-WM-06394
TRN: US09V1108081142
Resource Type:
Conference
Resource Relation:
Conference: Waste Management 2006 Symposium - WM'06 - Global Accomplishments in Environmental and Radioactive Waste Management: Education and Opportunity for the Next Generation of Waste Management Professionals, Tucson, AZ (United States), 26 Feb - 2 Mar 2006; Other Information: Country of input: France; 11 refs
Research Org:
WM Symposia, Inc., PO Box 13023, Tucson, AZ, 85732-3023 (United States)
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; ALPHA-BEARING WASTES; CERTIFICATION; DECOMMISSIONING; DOCUMENTATION; INVENTORIES; NEW MEXICO; RADIOACTIVE WASTE DISPOSAL; REGULATIONS; STORAGE FACILITIES; US EPA; WIPP