Document Detail


226Ra, 228Ra and 228Th in scale and sludge samples from the Campos Basin oilfield E&P activities.
MedLine Citation:
PMID:  12408495     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
More than 40 scale and sludge samples from the Campos Basin oilfield were analysed in terms of 226Ra, 228Ra and 228Th. Although the exact origin of the samples was not known, scale samples derived from production pipes and sludge samples from water-oil separation units. Reported values ranged from 0.13 to 331 kBq.kg(-1) for 226Ra, from 0.10 to 245 kBq.kg(-1) for 228Ra and <0.10 to 272 kBq.kg(-1) for 228Th in sludge samples. The concentrations in scales were much more regular than in sludges and ranged from 16.2 to 93.2 kBq.kg(-1) for 226Ra, from 4.0 to 36.9 kBq.kg(-1) for 228Ra and from 4.5 to 18.5 kBq.kg(-1) for 228Th. Based on the Basic Safety Standards recommendations and on the derived results, these activities cannot be regarded as exempted and specific procedures should be designed for their radiological control.
Authors:
L E Matta; J M Godoy; M C Reis
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Radiation protection dosimetry     Volume:  102     ISSN:  0144-8420     ISO Abbreviation:  Radiat Prot Dosimetry     Publication Date:  2002  
Date Detail:
Created Date:  2002-10-31     Completed Date:  2003-04-17     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8109958     Medline TA:  Radiat Prot Dosimetry     Country:  England    
Other Details:
Languages:  eng     Pagination:  175-8     Citation Subset:  IM    
Affiliation:
Instituto de Radioproteção e Dosimetria, Comissão Nacional de Energia Nuclear Av. Salvador Allende s/n - Jacarepaguá, RJ, Brazil. lematta@ird.gov.br
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MeSH Terms
Descriptor/Qualifier:
Brazil
Gamma Rays
Petroleum
Radiation Monitoring / methods
Radium / analysis*
Sewage / analysis*
Thorium / analysis*
Chemical
Reg. No./Substance:
0/Petroleum; 0/Sewage; 7440-14-4/Radium; 7440-29-1/Thorium

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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