The response of the RO-2 survey meter to mixed radiation fields

Journal Article · Fri Dec 01 04:00:00 EST 1989 · Radiation Protection Management; (United States)

OSTI ID:5287213

Shonka, J J ^[1]; Tschaeche, A N; Tomblison, M R; Gibeault, G L; Moon, U Y; McCoy, G C; Schrader, B J ^[2]

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1. Shonka Research Associates, Inc. (US)
2. Westinghouse Idaho Nuclear Co., Inc., Idaho Falls, ID (United States)

Reactor fuel reprocessing can sometimes result in radiation fields originating from nearly-pure Ru-106/Rh-106 (E{sub max} = 3.5 MeV), and field measurements are often made where beta-to-gamma ratios exceed 100-to-1. If the range of the high energy beta particles exceeds the density-thickness of the side wall and/or end window of the radiation detector, a significant fraction of the beta radiation can easily be interpreted as gamma radiation. The magnitude of the error increases as the beta-to-gamma radio increases. Calculations and measurements are presented which show the magnitude of the resulting errors. To address this problem, a modification kit was developed for the Eberline RO-2A which increased the density-thickness of both the sidewall and slide to 1040 mg/cm{sup 2}. In this paper experimental results showing the effectiveness of the modification are discussed.

• OSTI ID: 5287213
• Journal Information: Radiation Protection Management; (United States), Journal Name: Radiation Protection Management; (United States) Vol. 6:6; ISSN 0740-0640; ISSN RPMAE
• Country of Publication: United States
• Language: English

Related Subjects

050800* -- Nuclear Fuels-- Spent Fuels Reprocessing
053002 -- Nuclear Fuels-- Environmental Aspects-- Radioactive Effluents-- (1992-)
054000 -- Nuclear Fuels-- Health & Safety
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
BETA DOSIMETRY
BETA PARTICLES
BETA RATIO
CHARGED PARTICLES
DOSIMETRY
ELEMENTS
FIELD TESTS
FUEL REPROCESSING PLANTS
GAMMA SOURCES
MATERIALS
METALS
MONITORING
NUCLEAR FACILITIES
PLANNING
PLATINUM METALS
RADIATION MONITORING
RADIATION PROTECTION
RADIATION SOURCES
RADIOACTIVE EFFLUENTS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
RHODIUM
RUTHENIUM
TESTING
TRANSITION ELEMENTS
WASTES