Radiotracers are extensively used in many industries for trouble shooting and optimization of process parameters leading to
considerable savings in time and huge economic benefits. In chemical and petrochemical industries different gases and vapours
flowing in the conversion reactors play a major role in the final production. Gaseous radiotracers are ideal to study hydrodynamics
of gas phases in process vessels. 41Ar and 79Kr are the preferred gaseous radiotracers for such studies. Owing to the increase in demand from Indian industries for gas
phase radiotracers, efforts have been made to produce 41Ar and 79Kr indigenously by irradiation of 40Ar and enriched 78Kr gaseous targets in research reactors. Prequalification of the containers used, safety aspects concerning accidental rupture
and mandatory tests necessary for irradiation of gaseous targets in the reactors have been studied. The paper describes some
of the important safety aspects involved and the results of trial irradiations on the production of 41Ar and 79Kr radiotracers. Standardization of suitable assay protocols for their regular production and supply for applications in industries
is also described.