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Radiation exposure in monazite industry

Conference:

Abstract

The monazite present in the beach sands of Kerala and Tamil Nadu (India) is separated in the mineral separation plants at Manavalakurichi and Chavara, operated by M/s Indian Rare Earths Ltd. The physical and chemical processing of the sand involves radiation hazards due to the presence of thorium, uranium and their daughter products in monazite. The paper reviews present status in the light of past experiences and analyses the dose apportionment in different work catagories. The problem of internal contamination and environmental radiation levels are also discussed with the help of the recently available data. Radiation fields in the physical processing of monazite at different stages are presented. Apportionment of doses at different stages of the chemical operation involving 10 tonne lots of monazite is presented in a tabular form. The changing trend in external exposure reflected in the man-rem/t of monazite over the years is illustrated in a graph.
Authors:
Paul, A C [1] 
  1. Bhabha Atomic Research Centre, Bombay (India). Health Physics Div.
Publication Date:
Apr 01, 1979
Product Type:
Conference
Reference Number:
AIX-12-619046; EDB-81-120209
Resource Relation:
Journal Name: Bull. Radiat. Prot.; (India); Journal Volume: 2:2; Conference: 6. Indian Association for Radiation Protection Conference, Bombay, India, 7 - 9 Mar 1979
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; MONAZITES; ORE PROCESSING; RADIATION HAZARDS; PERSONNEL; RADIATION DOSES; INDIA; RADIATION PROTECTION; RADIUM 228; SEPARATION PROCESSES; WORKING CONDITIONS; ACTINIDE COMPOUNDS; ALKALINE EARTH ISOTOPES; ASIA; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; DEVELOPING COUNTRIES; DOSES; EVEN-EVEN NUCLEI; HAZARDS; HEALTH HAZARDS; HEAVY NUCLEI; ISOTOPES; MATERIALS; MINERALS; NUCLEI; OXYGEN COMPOUNDS; PHOSPHATES; PHOSPHORUS COMPOUNDS; PROCESSING; RADIOACTIVE MATERIALS; RADIOACTIVE MINERALS; RADIOISOTOPES; RADIUM ISOTOPES; RARE EARTH COMPOUNDS; THORIUM COMPOUNDS; THORIUM MINERALS; THORIUM PHOSPHATES; YEARS LIVING RADIOISOTOPES; 054000* - Nuclear Fuels- Health & Safety
OSTI ID:
6240499
Country of Origin:
India
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: BRPRD
Submitting Site:
INIS
Size:
Pages: 11-14
Announcement Date:

Conference:

Citation Formats

Paul, A C. Radiation exposure in monazite industry. India: N. p., 1979. Web.
Paul, A C. Radiation exposure in monazite industry. India.
Paul, A C. 1979. "Radiation exposure in monazite industry." India.
@misc{etde_6240499,
title = {Radiation exposure in monazite industry}
author = {Paul, A C}
abstractNote = {The monazite present in the beach sands of Kerala and Tamil Nadu (India) is separated in the mineral separation plants at Manavalakurichi and Chavara, operated by M/s Indian Rare Earths Ltd. The physical and chemical processing of the sand involves radiation hazards due to the presence of thorium, uranium and their daughter products in monazite. The paper reviews present status in the light of past experiences and analyses the dose apportionment in different work catagories. The problem of internal contamination and environmental radiation levels are also discussed with the help of the recently available data. Radiation fields in the physical processing of monazite at different stages are presented. Apportionment of doses at different stages of the chemical operation involving 10 tonne lots of monazite is presented in a tabular form. The changing trend in external exposure reflected in the man-rem/t of monazite over the years is illustrated in a graph.}
journal = {Bull. Radiat. Prot.; (India)}
volume = {2:2}
place = {India}
year = {1979}
month = {Apr}
}