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252Cf-Source-Driven Neutron Noise Measurements of Subcriticality for a Slab Tank Containing Aqueous Pu-U Nitrate

Conference ·
OSTI ID:6048293
 [1];  [1];  [1];  [1];  [1];  [2];  [2];  [2]
  1. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
  2. Power Reactor and Nuclear Fuel Development Corporation (PNC), Tokyo (Japan)
+ Show Author Affiliations
In order to study nuclear criticality safety related to the development of fast breeder technology, 252Cf-source-driven neutron noise analysis measurements were performed with a Pu-U nitrate solution in a slab tank of various heights and thickness varying 11.43 cm to 19.05 cm. The results and conclusions of these experiments are (1) a capability to measure the subcriticality of a multiplying system of slab geometry to a keff as low as 0.7 was demonstrated, (2) calculated neutron multiplication factors agreed with those from the experiments within ~0.02, and (3) the applicability of the method for plutonium solution systems was demonstrated. This paper describes measurements in which the height of the slab was varied for a fixed thickness and the thickness varied for a fixed height, which are the first applications of this measurement method to slab geometry.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Power Reactor and Nuclear Fuel Development Corporation (PNC), Tokyo (Japan)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP); USDOE Office of Facilities, Fuel Cycle, and Test Programs
DOE Contract Number:
AC05-84OR21400
OSTI ID:
6048293
Report Number(s):
CONF-871045-7; ON: DE87013676
Country of Publication:
United States
Language:
English

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Related Subjects

220100* -- Nuclear Reactor Technology-- Theory & Calculation
220900 -- Nuclear Reactor Technology-- Reactor Safety
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
BREEDER REACTORS
CALIFORNIUM 252
CALIFORNIUM ISOTOPES
CRITICALITY
Cross-Power Spectral Densities (CRSD)
Detector-Source Configurations
EPITHERMAL REACTORS
EVEN-EVEN NUCLEI
FAST REACTORS
FBR TYPE REACTORS
Fast Breeder Technology
HEAVY NUCLEI
ISOTOPES
Inverse Kinetics Rod Drop (IKRD)
MEASURING METHODS
NEUTRON FLUX
NUCLEI
Neutron Multiplication Factor
Nuclear Criticality Safety
Nuclear Criticality Safety Program (NCSP)
RADIATION FLUX
RADIOISOTOPES
REACTOR NOISE
REACTORS
SAFETY
Slab Geometry
YEARS LIVING RADIOISOTOPES