Application of the limited frequency-unannounced access strategy measurement technology in gas centrifuge enrichment plants
As part of a limited frequency-unannounced access inspection strategy for international safeguards, a gamma ray measurement technique for confirming the absence of highly enriched uranium inside gas centrifuge enrichment plant cascade header pipes has been developed by the US Enrichment Safeguards Program, and equipment for application of this measurement technique by an international safeguards inspector has been designed. This pipe measurement strategy is based on a two-phase measurement approach that is capable of verifying whether the enrichment of the UF/sub 6/ gas currently in a pipe exceeds 20% U-235 and whether UF/sub 6/ gas exceeding 20% U-235 has been in a pipe within the last 24 h. An automated measurement process sequence has been incorporated into the firmware of a portable multichannel analyzer to lead an international safeguards inspector through the measurement sequence, and implementation and inspection procedures have been developed. Described are the verification technique, the detection equipment, and the automated decision process that have been developed by US Enrichment Safeguards Program participants at Los Alamos National Laboratory and Martin Marietta Energy Systems, Inc., Oak Ridge Gaseous Diffusion Plant. Also noted are measurement technology developments from other countries that were useful in developing the US Enrichment Safeguards Program's gamma ray measurement technique. Results from an initial International Atomic Energy Agency session for evaluation of the verification technique, the detection equipment, and the procedures for their use are summarized. 7 refs., 5 figs.
- Research Organization:
- Oak Ridge Gaseous Diffusion Plant, TN (USA)
- DOE Contract Number:
- AC05-84OT21400
- OSTI ID:
- 5326358
- Report Number(s):
- K/OA-5929; CONF-850765-24; ON: DE85015802
- Resource Relation:
- Conference: 26. annual meeting of the Institute of Nuclear Materials Management, Albuquerque, NM, USA, 21 Jul 1985; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
Similar Records
UF/sub 6/ test loop for evaluation and implementation of international enrichment plant safeguards
UF/sub 6/ test loop for evaluation and implementation of international enrichment plant safeguards
Related Subjects
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CENTRIFUGE ENRICHMENT PLANTS
IAEA SAFEGUARDS
INSPECTION
NUCLEAR MATERIALS MANAGEMENT
ACCOUNTING
URANIUM 235
GAMMA SPECTROSCOPY
X-RAY FLUORESCENCE ANALYSIS
DETECTION
HIGHLY ENRICHED URANIUM
PIPES
URANIUM HEXAFLUORIDE
ACTINIDE COMPOUNDS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ACTINIDES
ALPHA DECAY RADIOISOTOPES
CHEMICAL ANALYSIS
ELEMENTS
ENRICHED URANIUM
EVEN-ODD NUCLEI
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HEAVY NUCLEI
INDUSTRIAL PLANTS
ISOMERIC TRANSITION ISOTOPES
ISOTOPE ENRICHED MATERIALS
ISOTOPE SEPARATION PLANTS
ISOTOPES
MANAGEMENT
MATERIALS
METALS
MINUTES LIVING RADIOISOTOPES
NONDESTRUCTIVE ANALYSIS
NUCLEAR FACILITIES
NUCLEI
RADIOISOTOPES
SAFEGUARDS
SPECTROSCOPY
URANIUM
URANIUM COMPOUNDS
URANIUM FLUORIDES
URANIUM ISOTOPES
X-RAY EMISSION ANALYSIS
YEARS LIVING RADIOISOTOPES
055001* - Nuclear Fuels- Safeguards
Inspection
& Accountability- Technical Aspects
050502 - Nuclear Fuels- Uranium Enrichment- Centrifugation- (-1989)
400103 - Radiometric & Radiochemical Procedures- (-1987)