29.12.2014 Views

fusion

fusion

fusion

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

working with others on the Energy Research and Production<br />

Subcommittee of the House Science and Technology<br />

Committee to pass an amendment on waste management<br />

to the House Appropriations Committee, which is currently<br />

marking up its budget recommendations for existing<br />

programs. This amendment would authorize $177 million<br />

to immediately begin the waste disposal plan.<br />

The proposed amendment passed in a vote of the full<br />

House committee, and congressional sources feel that it<br />

is likely to pass both the House and the Senate—if the<br />

necessary constituency support is generated (see box).<br />

A Viable Nuclear Waste Program<br />

In general, nuclear waste programs here and internationally<br />

are converging on the same solution—a solution<br />

proposed 20 years ago during the nuclear industry's infancy.<br />

The United States, in fact, was committed to this<br />

program until President Carter's decision in April 1977 to<br />

halt commercial reprocessing of nuclear fuel and to stop<br />

the construction of the Barnwell, S.C. reprocessing plant,<br />

then 75 percent complete.<br />

There are three basic parts to a nuclear waste management<br />

program: separating the radioactive fission product<br />

wastes from the spent fuel, recycling the unused uranium<br />

and plutonium fuel included in the spent fuel back into<br />

nuclear power reactors, and routing the wastes through<br />

a waste storage process. As described in more detail<br />

below, the process consists of storing the waste in concentrated<br />

liquid form in holding tanks for a period of<br />

approximately 10 years, solidifying this waste into a very<br />

stable glassified form, and sealing it into a metal container<br />

to be transported to an underground depository for permanent<br />

long-term storage. To cover all possibilities, the<br />

depository should be designed so that during the first 100<br />

years of storage, the wastes could be retrieved, in case it<br />

were decided later to make productive use of the valuable<br />

waste products or to dispose of them by new, more<br />

advanced technologies.<br />

The point is that we are not dealing with developing a<br />

new technology, such as nuclear <strong>fusion</strong> reactors, magnetohydrodynamic<br />

energy conversion systems, or advanced<br />

fission reactors. We are talking about permanently burying<br />

something for a long time, using technologies that exist<br />

now and are known to work. The tasks at hand are to plan<br />

and design this waste disposal program; to engineer it; to<br />

build and operate the facilities; and, finally, to monitor<br />

and collect data after the start of operations so that any<br />

necessary improvements can be made in this facility and<br />

in future waste disposal facilities as new things are learned.<br />

In short, all that remains to solving the nation's nuclear<br />

waste problem is to engineer and construct the appropriate<br />

storage systems.<br />

What Are Nuclear Wastes<br />

Before the president's April 1977 directive, nuclear<br />

wastes in the United States were generally classified as<br />

high-level wastes (HLW), transuranic wastes (TRU), lowlevel<br />

wastes (LLW), uranium mine and mill tailings, and<br />

gaseous effluents from operating reactors or reprocessing<br />

51

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!