title: A survey of IAEA/WHO 60Co TLD postal dose intercomparison exercises during 1985-2003.
abstract: Results of the survey of IAEA/WHO Co postal dose intercomparison exercises in which the Secondary Standard Dosimetry Laboratory participated during the period 1985-2003 are presented. In 14 exercises spread over a period of 19 years, the deviation in therapy dose level measurements of the Secondary Standard Dosimetry Laboratory has never exceeded the International Atomic Energy Agency Dosimetry Laboratory acceptable levels of accuracy. The IAEA/WHO thermoluminescent dosimeter postal dose intercomparison service, the procedure for irradiation of thermoluminescent dosimeters, and the water absorbed dose determination are briefly described.
authors.affiliation: Head Secondary Standard Dosimetry Laboratory, Health Physics Division, PINSTECH, P.O. Nilore, Islamabad, Pakistan. salman@pinstech.org.pk
authors.forename: Ahmad Syed
authors.initials: AS
authors.lastname: Salman
authors.forename: Khalid
authors.initials: K
authors.lastname: Mahmood
authors.forename: Saraj Din
authors.initials: SD
authors.lastname: Orfi
mesh_terms: D002138:Calibration / Q000592:standards; D003037:Cobalt Radioisotopes / Q000032:analysis* / Q000592:standards*; D003625:Data Collection; D017408:Guidelines as Topic; D038622:Internationality; D011785:Quality Assurance, Health Care / Q000592:standards*; D011829:Radiation Dosage; D012015:Reference Standards; D012958:Societies, Scientific; D013819:Thermoluminescent Dosimetry / Q000295:instrumentation* / Q000592:standards*; D014944:World Health Organization
chemical_list: D003037:Cobalt Radioisotopes