A Simple Device for Personnel Monitoring of an Accidental Nuclear Reaction

Journal Article · Fri May 01 00:00:00 EDT 1959 · Nuclear Science and Engineering

OSTI ID:4246579

Henry, H. F. ^[1]; Bailey, J. C. ^[1]; Rohr, R. C. ^[1]

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1. Oak Ridge Gaseous Diffusion Plant (K-25), Oak Ridge, TN (United States)

The radioactive In¹¹⁶ produced by the In¹¹⁵(n, gamma) In ¹¹⁶ reaction has been utilized in a simple personnel monitoring device at the ORGDP for several years as a method for estimating the total radiation dosage received in the event of a possible accidental nuclear reaction. A 1-gm indium foil is placed in a standard plastic security badge; after a suspected exposure to an accidental burst, this foil is monitored by a BETA - gamma survey meter, and the reading obtained used to determine the estimated dosage. A time-after- exposure correction factor is also used. For calibration of indium foil, an exposure to a light-water moderated critical reactor of highly enriched uranyl fluoride was evaluated and the results are indicated briefly. An instantaneous exposure of about 60 mrad is detectable immediately after an exposure even with the unsplit badges and one of about 120 mrad is detectable an hour after the occurrence.

• Research Organization: Oak Ridge Gaseous Diffusion Plant (K-25), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP); US Atomic Energy Commission (AEC)
• DOE Contract Number: NONE
• NSA Number: NSA-13-015249
• OSTI ID: 4246579
• Journal Information: Nuclear Science and Engineering, Journal Name: Nuclear Science and Engineering Vol. 5; ISSN 0029-5639
• Publisher: Taylor & Francis
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ACCIDENTS
BETA PARTICLES
DOSEMETERS
ERRORS
FLUORIDES
FOILS
GAMMA RADIATION
INDIUM 115
INDIUM 116
MONITORING
Nuclear Criticality Safety Program (NCSP)
PERSONNEL
POLYMERS
QUANTITATIVE ANALYSIS
RADIATION DOSES
REACTORS
STANDARDS
URANYL COMPOUNDS
WATER MODERATOR