ICEM11 Final Program 9.7.11pm_ICEM07 Final Program ... - Events

Session 13 Abstracts
processing plant for extraction of rare earths, have been filed across the land several fractions of soil containing monazite sand. In
order to guide the remediation of the area for unrestricted use, was a plan for remediation of radioactive waste characterization
based on geological, hydrogeological and environmental extensive in the area. From the calculation of the dose was established that
the fractions of soil with concentrations of 226Ra and 228Ra below 0.5 Bq/g result in additional effective dose less than 1.0 mSv/yr
and therefore can be kept on the ground. The fractions…
8) WNA STATEMENT - TOWARDS GREATER EFFICIENCY IN THE MANAGEMENT
OF LOW-LEVEL RADIOACTIVE MATERIAL THAT CONCURRENTLY SUPPORTS REUSE,
RECYCLING AND DISPOSAL (wP - 59414)
Sylvain Saint-Pierre, World Nuclear Association (WNA) (UK)
This paper presents the subject WNA statement which resulted from a conserted effort between a wide range of nuclear industry
players such as nuclear power utilities, nuclear fuel cycle companies – and experienced recyling and waste disposal companies
which routinely received material from nuclear sites.
SESSION 13 — HLW, FISSILE, TRU AND SPENT FUEL SHORT AND LONG-TERM STORAGE ISSUES (2.4)
1) WEST VALLEY DEMONSTRATION PROJECT HIGH LEVEL, TRANSURANIC,
AND GREATER THAN CLASS C WASTES (wP-59048)
James Blankenhorn, West Valley Environmental Services (USA)
Located in the scenic hills of Western New York, just about 35 miles south of Buffalo, the 68 acre West Valley Demonstration
Project (WVDP) is a unique and challenging environmental cleanup project that currently manages High Level, Transuranic, and
Greater than Class C wastes
Before the U.S. Department of Energy (DOE) took on the challenge of cleaning up the site, the site was the location of the only
commercial spent nuclear fuel (SNF) reprocessing facility to operate in the United States. Operated by Nuclear Fuels Services from
1966-72, the site was owned by the State of New York and licensed by the Atomic Energy Commission. During operations, the
plant reprocessed approximately 640 metric tons of spent nuclear fuel. When commercial operations were discontinued and the
facilities were returned to New York State, there were nearly 2,271,247 liters (nearly 600,000 gallons) of liquid high-level radioactive
waste (HLW) in an underground storage tank and the facility that was used to reprocess the SNF, the Main Plant Process Building
(MPPB), was highly contaminated.
The West Valley Demonstration Project Act of 1980 (the Act) authorized DOE to conduct a cleanup of the site, in cooperation
with the New York State Energy Research and Development…
2) MANAGING AGING EFFECTS ON USED FUEL DRY CASK FOR VERY LONG-TERM STORAGE (wP-59067)
Omesh Chopra, Dwight Diercks, David Ma, Vik Shah, Shiu-Wing Tam, Ralph Fabian,
Yung Liu, Mark Nutt, Argonne National Laboratory (ANL)(USA)
The cancellation of the Yucca Mountain repository program in the Unites States raises the prospect of very long-term storage
(i.e., >120 years) of used fuel and deferred transportation. While long-term storage of used nuclear fuel in dry cask storage systems
(DCSSs) at Independent Spent Fuel Storage Installations (ISFSIs) is already a standard practice among U.S. utilities, recent rulemaking
activities of the U.S. Nuclear Regulatory Commission (NRC) indicated additional flexibility for the NRC licensees of ISF-
SIs and certificate holders of the DCSSs to request initial and renewal terms for up to 40 years. The proposed rule also adds a
requirement that renewal applicants must provide time-limited aging analyses (TLAAs) and descriptions of aging management programs
(AMPs) to ensure that the systems, structures, and components (SSCs) in the DCSSs will perform as designed under the
extended license terms. Details of the license renewal process can be found in the NRC draft Standard Review Plan (NUREG-1927)
for renewal of ISFSI Licenses and DCSS Certificates of Compliance (CoCs). The final Standard Review Plan will provide NRC
staff with guidance on the renewal of site-specific licenses and CoCs.
Over the last three decades, Argonne National Laboratory has conducted research programs funded by NRC to address…
3) APPLICATION OF COUPLED THERMO-HYDRO-MECHANICAL-CHEMICAL (THMC) PROCESS IN
HYDROTHERMAL SYSTEMS TO PROCESS NEAR A HIGH-LEVEL NUCLEAR WASTE REPOSITORY (wP-59246)
Geoffrey Peter, Oregon Institute of Technology Portland Center (USA)
Modeling of coupled processes in the geology near a high-level nuclear waste repository is similar to the modeling of coupled
Thermo-Hydro-Mechanical-Chemical (THMC) processes that occur in magma-hydrothermal systems. Magma-hydrothermal systems
were extensively studied by former Professor Denis Norton and his colleagues at the Geoscience Department at University of
Arizona. These hydro-thermal codes were verified by obtaining excellent matches between calculated oxgyen 18 isotope - values
and measured oxygen 18 isotope values in three principal rock units: basalt, gabbro, and gneiss.
This paper reviews the concept of transport theory used in the formulation of the conservation principle that is used to model
the hydrothermal systems. In addition, it reviews conservation of mass, momentum, energy, and chemical components equations as
applied to the multicomponent-multiphase systems related to hydrothermal systems and obtains parallels to reaction rates and
radionuclide transport in the geology of a high level nuclear water repository. The paper discusses the numerical methods used to
solve the coupled equations.
Further, this paper compares published results obtained by other researchers modeling coupled THM process in the geology of
high-level nuclear waste repositories.
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