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Wipp Waste Package Testing on Simulated DHLW: Emplacement

Published online by Cambridge University Press:  26 February 2011

Martin A. Molecke
Martin A. Molecke*
Affiliation:
Sandia National Laboratories, Div. 6332, Albuquerque, NM 87185
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Abstract

Several series of simulated (nonradioactive) defense high-level waste (DHLW) package tests have recently been emplaced in the WIPP, a research and development facility authorized to demonstrate the safe disposal of defense-related wastes. The primary purpose of these 3-to-7 year duration tests is to evaluate the in situ materials performance of waste package barriers (canisters, overpacks, backfills, and nonradioactive DHLW glass waste form) for possible future application to a licensed waste repository in salt. This paper describes all test materials, instrumentation, and emplacement and testing techniques, and discusses progress of the various tests.

These tests are intended to provide information on materials behavior (i.e., corrosion, metallurgical and geochemical alterations, waste form durability, surface interactions, etc.), as well as comparison between several waste package designs, fabrications details, and actual costs.These experiments involve 18 full-size simulated DHLW packages (approximately 3.0 m x 0.6 m diameter) emplaced in vertical boreholes in the salt drift floor. Six of the test packages contain internal electrical heaters (470 W/canister), and were emplaced under approximately reference DHLW repository conditions. Twelve other simulated DHLW packages were emplaced tinder accelerated-aging or overtest conditions, including the artificial introduction of brine, and a thermal loading approximately three to four times higher than reference. Eight of these 12 test packages contain 1500 W/canister electrical heaters; the other four are filled with DHLW glass.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 44: Symposium N – Scientific Basis for Nuclear Waste Management VIII , 1984 , 265
Copyright
Copyright © Materials Research Society 1985

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References

1. Molecke, M. A., Test Plan: Waste Package Performance Technology Experiments for Simulated DHLW, Sandia National Laboratories, Albuquerque, NM (June 1984).Google Scholar
2. Molecke, M. A. and Matalucci, R. V., Preliminary Requirements for the Emplacement and Retrieval of DHLW Tests in the WIPP, SAND84–1444, Sandia National Laboratories, Albuquerque, NM (October 1984).Google Scholar
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