IER-484 CED3b Report: AFRRI ER1 Dosimetry Characterization

Technical Report · Tue Jan 23 04:00:00 EST 2024

DOI:https://doi.org/10.2172/2282414· OSTI ID:2282414

Tamashiro, A. S. ^[1]; Maggi, P. ^[1]; Anspach, L. ^[1]; Firpo, M. ^[1]; Witter, P. ^[2]; Mitchell, S. ^[1]; Percher, C. ^[1]; Heinrichs, D. ^[1]; Ward, D. ^[3]; Kilbane, J. ^[3]; Trompier, F ^[4]; Ristic, Y. ^[4]; Cook, A. ^[5]; Smolinski, A. ^[5]; Guynn, A. ^[5]; Brener, M. ^[5]; Ayers, T. ^[5]; Dill, J. ^[5]; Gann, J. ^[5]; Knibbe, B. ^[5] ; MiguelPablo, L. ^[5]; Payer, J. ^[5]; Stewart, A. ^[5]; Sumlin, J. ^[5]; Tylka, T. ^[5]; Wilson, J. ^[5]; Angus, P. ^[6]; Romanyukha, A. ^[7]

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1. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
2. Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Colorado State Univ., Fort Collins, CO (United States)
3. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
4. Institut de Radioprotection et de Sûreté Nucléaire, Fortenary-aux-Roses (France)
5. Armed Forces Radiobiology Research Institute, Bethesda, MD (United States)
6. Atomic Weapons Establishment, Berkshire (United Kingdom)
7. Naval Dosimetry Center, Bethesda, MD (United States)

This report presents the preliminary work for IER 484, the characterization of the leakage radia tion field from the TRIGA reactor at the Armed Forces Radiobiology Research Institute (AFRRI). The purpose of the dose characterization is to establish the reference dose needed to execute a NAD inter-comparison exercise. During the week of August 20th, a team from Lawrence Livermore National Laboratory (LLNL), Sandia National Laboratory (SNL), and Institut de Radioprotection et de Sûreté Nucléaire (IRSN) performed various measurements in AFRRI’s TRIGA ER1 (Exposure Room 1) with Passive Neutron Spectrometer (PNS) spheres and nuclear accident dosimeters (NADs) mounted on Bottle Manikin Absorption (BOMAB) phantoms (to simulate doses received by people) and additional NADs mounted on aluminum plates (to simulate doses in free air). Without Atomic Weapons Establishment (AWE), LLNL became responsible for measuring the neutron spectrum using PNS spheres. SNL is responsible for providing photon dose data. LLNL, SNL, and IRSN each deployed their own NADs, which will be compared to the reference dose measured. Final characterization of the dose field based on analyzed data will be presented in the CED4a report.

• Research Organization: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: AC52-07NA27344
• OSTI ID: 2282414
• Report Number(s): LLNL--TR-859447; 1082016
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
61 RADIATION PROTECTION AND DOSIMETRY