Prototype Heater Test of the Environment Around a Simulated Waste Package

by Abelardo Ramirez, Lawrence Livermore Natl Lab, United States,
Thomas A. Buscheck, Lawrence Livermore Natl Lab, United States,
Richard Carlson, Lawrence Livermore Natl Lab, United States,
William Daily, Lawrence Livermore Natl Lab, United States,
V. Robert Latorre, Lawrence Livermore Natl Lab, United States,
Kenrick Lee, Lawrence Livermore Natl Lab, United States,
Wunan Lin, Lawrence Livermore Natl Lab, United States,
Nai-hsien Mao, Lawrence Livermore Natl Lab, United States,
Donald Towse, Lawrence Livermore Natl Lab, United States,
Tzou-Shin Ueng, Lawrence Livermore Natl Lab, United States,
Donald Watwood, Lawrence Livermore Natl Lab, United States,



Document Type: Proceeding Paper

Part of: High Level Radioactive Waste Management 1990

Abstract:

This paper presents selected results obtained during the 301 day duration of the Prototype Engineered Barrier System Field Test (PEBSFT) performed in G-Tunnel within the Nevada Test Site. The test described is a precursor to the Engineered Barrier Systems Field Tests (EBSFT) planned for the Exploratory Shaft Facility in Yucca Mountain. The EBSFT will consist of in situ tests of the geohydrologic and geochemical environment in the near field (within a few meters) of heaters emplaced in welded tuff to simulate the thermal effects of waste packages. The paper discusses the evolution of hydrothermal behavior during the prototype test, including rock temperatures, changes in rock moisture content, air permeability of fractures, and gas-phase humidity in the heater borehole.

Subject Headings: Field tests | Radioactive wastes | Temperature measurement | Rocks | HVAC | Water content | Waste storage | Nevada | United States

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