Solid State Track Recorder Measurements in the Poolside Critical Assembly

Conference · Mon Oct 01 00:00:00 EDT 1979

OSTI ID:5847274

Ruddy, F. H. ^[1]; Gold, R. ^[1]; Roberts, J. H. ^[2]

---

1. Hanford Engineering Development Laboratory, Richland, WA (United States)
2. Macalester College, St. Paul, MN (United States)

Fission rate measurements using solid state track recorders (SSTR) have been performed at the PCA. A schematic representation of a cross-section of the PCA is shown. Fission rates were measured in the pressure vessel simulator at the T/4, T/2 and 3T/4 positions and in the void box (VB). SSTR measurements were carried out with ²³²Th, ²³⁵U (bare and cadmium covered), ²³⁸U and ²³⁷Np fissionable deposits. Midplane only measurements were carried out for ²³⁵U and ²³⁷Np, while 5 axial locations at 1/4T and 1/2T and 3 axial locations at 3/4T and in the VB were sampled for ²³²Th and ²³⁸U. The HEDL SSTR fission rate measurements reported herein for both configurations together with NBS and CEN/SCK fission chamber measurements will be used to establish absolute and relative fission reaction rates, and ratios for the PCA pressure vessel Benchmark Facility.

• Research Organization: Hanford Engineering Development Laboratory, Richland, WA (United States); Macalester College, St. Paul, MN (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP)
• DOE Contract Number: AC14-76FF02170
• OSTI ID: 5847274
• Report Number(s): HEDL-SA-1942-FP; CONF-791051-11
• Country of Publication: United States
• Language: English

Related Subjects

220600* -- Nuclear Reactor Technology-- Research
Test & Experimental Reactors
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
DATA
DATA COMPILATION
Dosimetry Instrumentation
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
EXPERIMENTAL REACTORS
Fission Rate Measurements
HEAVY NUCLEI
INFORMATION
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
KINETICS
MINUTES LIVING RADIOISOTOPES
NEPTUNIUM 237
NEPTUNIUM ISOTOPES
NUCLEI
NUMERICAL DATA
Nuclear Criticality Safety Program (NCSP)
ODD-EVEN NUCLEI
ORNL-PCA REACTOR
RADIOISOTOPES
REACTION KINETICS
REACTORS
RESEARCH AND TEST REACTORS
Solid State Track Recorders (SSTR)
TEST FACILITIES
THORIUM 232
THORIUM ISOTOPES
URANIUM 235
URANIUM 238
URANIUM ISOTOPES
Void Box (VB)
YEARS LIVING RADIOISOTOPES
ZERO POWER REACTORS