RESUMO
The sensitivity of Harshaw™ magnesium/copper/phosphorus-doped lithium fluoride is shown to be stable over long time periods, even when, as is often the case in practical operations, the TLDs are read out only three times a year.
Assuntos
Cobre/análise , Fluoretos/análise , Compostos de Lítio/análise , Magnésio/análise , Fósforo/análise , Monitoramento de Radiação/instrumentação , Proteção Radiológica/instrumentação , Dosimetria Termoluminescente/instrumentação , Calibragem , Desenho de Equipamento , Humanos , Teste de Materiais , Monitoramento de Radiação/métodos , Proteção Radiológica/métodos , Sensibilidade e Especificidade , Dosimetria Termoluminescente/métodos , Fatores de TempoRESUMO
The Health Protection Agency (and its predecessors) has many years experience of running Approved Dosimetry Services, including coordination and recordkeeping. This paper describes the experiences gained whilst introducing a new web-based system for coordination and recordkeeping to replace the ageing mainframe database. This includes the planning of the project, the migration of the data between the two systems, parallel running of all the operational tasks and lessons learned during the process.
Assuntos
Monitoramento de Radiação/normas , Proteção Radiológica/normas , Radiometria/normas , Sistemas Computacionais , Computadores , Bases de Dados Factuais , Desenho de Equipamento , Humanos , Desenvolvimento de Programas , Monitoramento de Radiação/métodos , Proteção Radiológica/métodos , Radiometria/métodos , Sistema de Registros , Reprodutibilidade dos Testes , Segurança , Reino UnidoRESUMO
The National Radiological Protection Board (NRPB)--now part of the new UK Health Protection Agency (HPA)--has operated an automated Dose Record Keeping (DRK) Service for over 30 y, and currently maintains records for some 10,000 workers. A proportion of these are designated as Outside Workers, and are issued with Radiation Passbooks, under the Ionising Radiations Regulations 1999 (IRR99). The present study reports the operational experience of NRPB's DRK Service in issuing passbooks, providing advice to users and issuing tailored reports. Indication is given on some problems commonly encountered by employers and dosimetry services.
Assuntos
Documentação/normas , Prontuários Médicos/normas , Exposição Ocupacional/análise , Monitoramento de Radiação/normas , Proteção Radiológica/normas , Medição de Risco/normas , Carga Corporal (Radioterapia) , Humanos , Internacionalidade , Exposição Ocupacional/prevenção & controle , Eficiência Biológica Relativa , Reprodutibilidade dos Testes , Sensibilidade e Especificidade , Reino UnidoRESUMO
Thirty-nine dyes were subjected to thin layer chromatography to evaluate eight different solvent systems. The results obtained were analysed by dye class following assessment in daylight and ultra violet light. N-butanol: acetic acid: water (40:10:50) gave optimum separations of dyes viewed in visible light. Although n-butanol: ethanol: water (90:10:10) gave slightly better results for fluorescing compounds, material was frequently left at the start point with this solvent.