Proof of principle report for in-tank moisture monitoring using an active neutron probe
This document establishes the proof of principle for use of a neutron probe to measure moisture concentrations in ferrocyanide waste tanks at the Hanford Site. Computer modeling and experiments with a modified neutron probe have shown that neutron-based measurements will provide accurate moisture determinations in Hanford Site ferrocyanide waste tanks. Moisture measurement using neutron moderation and diffusion is an established and extensively documented technology for the well logging industry. Sophisticated neutron transport modeling and calibrations with known moisture concentrations have provided the necessary developmental analyses and validations. Proof of principle was accomplished using the existing in-tank neutron surveillance tool and its support equipment. A minor, inexpensive hardware modification permitted extending the use of the existing probe to moisture measurements. A limited moisture calibration was performed using the modified in-tank neutron probe, and the results were used to adjust model parameters. Scan data from three ferrocyanide tanks have been obtained using the modified in-tank neutron probe, and interpretation of these scans is in progress. Modeling analyses and experimental test results have provided information that will be used to develop a prototype neutron device for improved in-tank moisture monitoring at the Hanford Site. Now a prototype device must be assembled, tested, and fully calibrated in known moisture ferrocyanide waste simulants.
- Research Organization:
- Westinghouse Hanford Co., Richland, WA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC06-87RL10930
- OSTI ID:
- 10118972
- Report Number(s):
- WHC-EP--0695; ON: DE94005985; BR: 35AF11201/35AF11202
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
052002
054000
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
FEASIBILITY STUDIES
FERROCYANIDES
HANFORD RESERVATION
HEALTH AND SAFETY
HIGH-LEVEL RADIOACTIVE WASTES
MOISTURE
MOISTURE GAGES
MONITORING
NEUTRON PROBES
RADIOACTIVE WASTE STORAGE
TANKS
WASTE DISPOSAL AND STORAGE
054000
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
FEASIBILITY STUDIES
FERROCYANIDES
HANFORD RESERVATION
HEALTH AND SAFETY
HIGH-LEVEL RADIOACTIVE WASTES
MOISTURE
MOISTURE GAGES
MONITORING
NEUTRON PROBES
RADIOACTIVE WASTE STORAGE
TANKS
WASTE DISPOSAL AND STORAGE