SHEBA-II as a Criticality Safety Benchmark
Conference
·
OSTI ID:100029
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
SHEBA-II (Solution High Energy Burst Assembly-II) is a critical assembly experiment currently (1995) being operated at the Los Alamos Critical Experiments Facility. It is a bare assembly fueled with an aqueous solution of about 5% enriched uranyl fluoride that is stored in four critically safe steel tanks. The solution is transferred to the critical assembly vessel (CAV) by applying gas pressure to the storage tanks. Reactivity is controlled by varying the solution level, and a safety rod may be inserted in a thimble along the central axis of the CAV for fast shutdown. The simple geometry provided by this cylindrical system allows for easily applied calculational methods, and thus SHEBA-II is ideally suited for use as a criticality safety benchmark experiment.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 100029
- Report Number(s):
- LA-UR--95-1931; CONF-9509100--18; ON: DE95015272
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
97 MATHEMATICS AND COMPUTING
BENCHMARKS
CRITICALITY
Critical Assembly Vessel (CAV)
Evaluated Nuclear Data File (ENDF)
FUEL SOLUTIONS
Hansen-Roach Data
KENO
Monte Carlo N-Particle Transport (MCNP)
Nuclear Criticality Safety Program (NCSP)
REACTIVITY
REACTOR SAFETY
SLIGHTLY ENRICHED URANIUM
Solution High Energy Burst Assembly-II (SHEBA-II)
TWODANT
URANYL FLUORIDES
Void Coefficients
ZERO POWER REACTORS
97 MATHEMATICS AND COMPUTING
BENCHMARKS
CRITICALITY
Critical Assembly Vessel (CAV)
Evaluated Nuclear Data File (ENDF)
FUEL SOLUTIONS
Hansen-Roach Data
KENO
Monte Carlo N-Particle Transport (MCNP)
Nuclear Criticality Safety Program (NCSP)
REACTIVITY
REACTOR SAFETY
SLIGHTLY ENRICHED URANIUM
Solution High Energy Burst Assembly-II (SHEBA-II)
TWODANT
URANYL FLUORIDES
Void Coefficients
ZERO POWER REACTORS