International evaluation of radiation measuring standards at the secondary standard dosimetry laboratory of Iran (SSDL)

SSDL have the responsibility to provide the radiation users, in particular at therapy and protection levels, with the radiation standards traceable to the international measurement system. The IAEA dosimetry laboratory has developed two measurement assurance programmes, TLD Postal Dose International and Ionization Chamber Calibration Factors Intercomparison, to monitor the quality of therapy level standards disseminated by the members of the IAEA/WHO Network of SSDL s. This paper describes the performance of Dosimetry and calibration intercomparisons in Co-60 and high energy X-ray beams at the SSDL of Iran, and represents the capability of this laboratory in maintaining and issuing therapy level radiation standards according to the results of the IAEA quality assurance programmes during 1987-1997