Aerial radiological survey of the Haddam Neck Plant and surrounding area, Haddam Neck, Connecticut. Date of survey: October 1981

Technical Report · Thu Jul 01 04:00:00 EDT 1982

OSTI ID:5180753

Holbaugh, J L; Maguire, T C

An aerial radiological survey was conducted over the Haddam Neck Plant near Haddam Neck, Connecticut. The survey, conducted from 15 to 22 October 1981, covered an 108-square-kilometer area centered on the plant. Radiological data were collected by flying at an altitude of 91 meters (300 feet) along lines oriented northeast-southwest and spaced 150 meters apart. Count rates obtained from the aerial platform were converted to exposure rates at 1 meter above the ground. The resulting exposure rates over most of the survey area were between 6 and 12 microroentgens per hour (..mu..R/h). Elevated exposure rates, up to 900 ..mu..R/h, were detected directly over the plant due to the presence of cobalt-58 and cobalt-60. The reported exposure rate values include an estimated cosmic ray contribution of 4 ..mu..R/h. Ground-based measurements made during the same time period were compared to the aerial survey results. Ion chamber readings and soil samples were taken from a location within the aerial survey boundaries. Exposure rate values obtained from these measurement techniques were in agreement with those obtained from the aerial data. The data were also in agreement with those obtained from an aerial radiological survey conducted during August 1969. Comparison of the results indicated that no changes in the radiological characteristics of the 1981 survey area were detectable outside the plant boundaries.

• Research Organization: EG and G, Inc., Las Vegas, NV (USA). Energy Measurements Group
• DOE Contract Number: AC08-76NV01183
• OSTI ID: 5180753
• Report Number(s): EGG-1183-1829; ON: DE82019946
• Country of Publication: United States
• Language: English

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500300* -- Environment
Atmospheric-- Radioactive Materials Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AERIAL MONITORING
BACKGROUND RADIATION
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
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COBALT 60
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DOSE RATES
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ENRICHED URANIUM REACTORS
EXPERIMENTAL DATA
FEDERAL REGION I
GAMMA RADIATION
HOURS LIVING RADIOISOTOPES
INFORMATION
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IONIZING RADIATIONS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MINUTES LIVING RADIOISOTOPES
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NORTH AMERICA
NUCLEAR FACILITIES
NUCLEAR POWER PLANTS
NUCLEI
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POWER REACTORS
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RADIATION MONITORING
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RADIOISOTOPES
REACTORS
SITE SURVEYS
THERMAL POWER PLANTS
THERMAL REACTORS
USA
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WATER MODERATED REACTORS
YEARS LIVING RADIOISOTOPES