From 26 June to 4 July of 2015 the leading specialist of radiological laboratory of NRSC was participating in the IAEA regional workshop on «Establishing Enhanced Approaches to the Control of Public Exposure to Radon». During the workshop the approaches on preventing measures of radon gas of experienced countries were discussed. NRSC is participating in radon gas program in Armenia. The workshop gave additional information to be used during radon gas measurement activities.