Disposition of nuclear waste using subcritical accelerator-driven systems

Conference · Thu Dec 31 04:00:00 EST 1998

OSTI ID:296809

Venneri, F; Li, N; Williamson, M; Houts, M; Lawrence, G

Spent fuel from nuclear power plants contains large quantities of Pu, other actinides, and fission products (FP). This creates challenges for permanent disposal because of the long half-lives of some isotopes and the potential for diversion of the fissile material. Two issues of concern for the US repository concept are: (1) long-term radiological risk peaking tens-of-thousands of years in the future; and (2) short-term thermal loading (decay heat) that limits capacity. An accelerator-driven neutron source can destroy actinides through fission, and can convert long-lived fission products to shorter-lived or stable isotopes. Studies over the past decade have established that accelerator transmutation of waste (ATW) can have a major beneficial impact on the nuclear waste problem. Specifically, the ATW concept the authors are evaluating: (1) destroys over 99.9% of the actinides; (2) destroys over 99.9% of the Tc and I; (3) separates Sr-90 and Cs-137; (4) separates uranium from the spent fuel; (5) produces electric power.

• Research Organization: Los Alamos National Lab., NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 296809
• Report Number(s): LA-UR--98-2449; CONF-980603--; ON: DE99001238
• Country of Publication: United States
• Language: English

Related Subjects

05 NUCLEAR FUELS
22 GENERAL STUDIES OF NUCLEAR REACTORS
43 PARTICLE ACCELERATORS
ACCELERATORS
ACTINIDE BURNER REACTORS
HALF-LIFE
NEUTRON SOURCES
ON-SITE POWER GENERATION
RADIOACTIVE WASTE MANAGEMENT
SUBCRITICAL ASSEMBLIES
TRANSMUTATION