A PRELIMINARY SURVEY FOR AIRBORNE RADIOACTIVITY AND BACKGROUND GAMMA RADIATION AT BOMBAY

Technical Report · Sat Oct 01 04:00:00 EDT 1960

OSTI ID:4065315

Vohra, K G; Abraham, P; Kelkar, D N; Subbaramu, M C

The data on airborne radioactivity and background intensity of gamma radiation at locations in and around the Atomic Energy Establishment Trombay is reported. The first survey carried out during February and March 1959 included 40 locations within a 6-kilometer zone around Apsara and the second survey carried out during the period January to April, 1960 included 47 locations within a 32kilometer zone covering the City of Bombay and its environs. This survey has been completed before the start of the Canada-India Reactor to provide a record of the preoperational environmental activity levels. It was found that the long- lived beta activity measured at the various locations in the Estsblishment and its environments is primarily due to the fission-products from nuclear detonations. Radon and thoron discharged from the uranium and thorium processing plants show rapid decrease with distance from the plants and beyond 1 kilometer, the levels decrease by a factor of 10 or more. The long-lived alpha activity in the air at off-site locations is primarily due to natural sources. The intensity of background radiation at off-site locations does not show large variations, and is attributed to natural sources. (auth)

• Research Organization: India. Atomic Energy Establishment, Trombay
• NSA Number: NSA-15-022551
• OSTI ID: 4065315
• Report Number(s): AEET/AM/18
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

AEROSOLS
AIR
ALPHA PARTICLES
ATMOSPHERE
BACKGROUND
BETA PARTICLES
ENVIRONMENT
FISSION PRODUCTS
GAMMA RADIATION
HALF-LIFE
HEALTH AND SAFETY
INSPECTION
MONITORING
NUCLEAR EXPLOSIONS
RADIATION DOSES
RADIATION SOURCES
RADIOACTIVITY
RADON
RADON 220
RECORDING SYSTEMS
REPROCESSING
THORIUM
URANIUM
VARIATIONS
WASTE DISPOSAL