On-Site Inspection RadioIsotopic Spectroscopy (Osiris) System Development

Technical Report · Tue Sep 01 00:00:00 EDT 2015

DOI:https://doi.org/10.2172/1228080· OSTI ID:1228080

Caffrey, Gus J. ^[1]; Egger, Ann E. ^[1]; Krebs, Kenneth M. ^[1]; Milbrath, B. D. ^[2]; Jordan, D. V. ^[2]; Warren, G. A. ^[2]; Wilmer, N. G. ^[3]

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1. Idaho National Laboratory, Idaho Falls, ID (United States)
2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

We have designed and tested hardware and software for the acquisition and analysis of high-resolution gamma-ray spectra during on-site inspections under the Comprehensive Nuclear-Test-Ban Treaty (CTBT). The On-Site Inspection RadioIsotopic Spectroscopy—Osiris—software filters the spectral data to display only radioisotopic information relevant to CTBT on-site inspections, e.g.,132I. A set of over 100 fission-product spectra was employed for Osiris testing. These spectra were measured, where possible, or generated by modeling. The synthetic test spectral compositions include non-nuclear-explosion scenarios, e.g., a severe nuclear reactor accident, and nuclear-explosion scenarios such as a vented underground nuclear test. Comparing its computer-based analyses to expert visual analyses of the test spectra, Osiris correctly identifies CTBT-relevant fission product isotopes at the 95% level or better.The Osiris gamma-ray spectrometer is a mechanically-cooled, battery-powered ORTEC Transpec-100, chosen to avoid the need for liquid nitrogen during on-site inspections. The spectrometer was used successfully during the recent 2014 CTBT Integrated Field Exercise in Jordan. The spectrometer is controlled and the spectral data analyzed by a Panasonic Toughbook notebook computer. To date, software development has been the main focus of the Osiris project. In FY2016-17, we plan to modify the Osiris hardware, integrate the Osiris software and hardware, and conduct rigorous field tests to ensure that the Osiris system will function correctly during CTBT on-site inspections. The planned development will raise Osiris to technology readiness level TRL-8; transfer the Osiris technology to a commercial manufacturer, and demonstrate Osiris to potential CTBT on-site inspectors.

• Research Organization: Idaho National Lab. (INL), Idaho Falls, ID (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC07-05ID14517; AC52- 07NA27344; AC05-76RL01830
• OSTI ID: 1228080
• Report Number(s): INL/EXT-15-35557; TRN: US1600024
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
98 NUCLEAR DISARMAMENT SAFEGUARDS, AND PHYSICAL PROTECTION
IODINE 132
GAMMA SPECTROMETERS
GAMMA SPECTRA
ON-SITE INSPECTION
FISSION PRODUCTS
CTBT
FIELD TESTS
NUCLEAR EXPLOSIONS
PROGRAMMING
COMPARATIVE EVALUATIONS
UNDERGROUND EXPLOSIONS
REACTOR ACCIDENTS
DESIGN
DATA ANALYSIS
DATA ACQUISITION
PERFORMANCE TESTING
ON-LINE MEASUREMENT SYSTEMS
Comprehensive Nuclear-Test-Ban Treaty
gamma-ray spectroscopy
data filter
gamma-ray spectral analysis
fission-product spectral analysis