Article 39Radiological surveillance of the workplace
1.Member States shall ensure that the radiological surveillance of the workplace referred to in point (b) of Articles 37(1) and point (a) of Article 38(1) comprises, where appropriate:
(a)the measurement of external dose rates, indicating the nature and quality of the radiation in question;
(b)the measurement of the activity concentration in air and the surface density of contaminating radionuclides, indicating their nature and their physical and chemical states.
2.The results of these measurements shall be recorded and shall be used, if necessary, for estimating individual doses, as provided for in Article 41.