Czech Republic Progress in radon prevention and remediation Regional Workshop IAEA RER 9136 Yerevan Marcela Bercikova State Office for Nuclear Safety Radon Program Department Czech Republic

1.1.2017 New Atomic legislation was valid 263/2016 coll. Atomic act 422/2016 coll. Decree about Radiation protection 362/2016 coll. Decree about Condition for grant of radon remedy DECREE No. 362 of 17 October 2016 on the conditions for the award of the grant from the state budget in some existing exposure situations The State Office For Nuclear Safety sets, pursuant to § 236 of Act No. 263/2016 Coll., the Atomic Act, to implement § 103(6) a): § 1 the adoption of justified measures to reduce the level of exposure to the presence of radon and its decay products in indoor air in the constructions for habitation and occupancy of the public; and b) the adoption to reduce the content of natural radionuclides in drinking water intended or public use.

§ 2 (1) The grant for the adoption of justified measures to reduce the level of exposure to the presence of radon and its decay products in indoor air in the constructions for habitation and occupancy of the public may be awarded to the owner of a) an apartment in a residential building or in a family house, or a family house, which is used for permanent residence and for whose construction a building permit or similar permit in its content has been issued before 28 February 1991 (hereinafter referred to as the “permit”), if the mean value of the measured values of radon activity concentration from all living rooms and kitchens is in the long term higher than 1000 Bq/m3 in normal use;

b) a school building, educational establishment building or a building used for social or health services during long stay of children under the age of 18, for whose construction a permit has been issued, if the mean value of the measured values of radon activity concentration in the air in any of the rooms intended for stay of children under the age of 18 reached the value higher than 300 Bq/m3 during their stay; or c) a building used for social or health services during long stay of persons, who are provided with such services, not mentioned in point b), for whose construction a permit has been issued, if the long-term mean value of the measured values of radon activity concentration in the air in any of the rooms during stay of those persons reached the value higher than 1000 Bq/m3 in normal use. (2) The grant under paragraph 1 may be awarded provided the implemented measure reduced the content of radon in the air in the construction below the reference level of 300 Bq/m3 or at least by 75% of its original value.

§ 3 (1) The grant for the adoption of measures to reduce the content of natural radionuclides in drinking water intended for public use may be awarded to an owner of public water main, if the content of natural radionuclides in the water supplied by this water main exceeds the maximum allowable value stipulated by the Decree on radiation protection and safety of radionuclide source, above which drinking water must not be, pursuant to § 100(1) a) of the Atomic Act, supplied for public use. (2) The grant under paragraph 1 may be awarded provided the implemented measure reduced the content of natural radionuclides below the reference level stipulated by the Decree on radiation protection and safety of radionuclide source, above which drinking water must not be, pursuant to § 100(1) b) of the Atomic Act, supplied for public use. Maximum permissible value is 300 Bq/l

Financial resources for remedy and Radon program The money provide Ministry of Finance The budget for it is more then we needed last years The Radon program provide for one remedy: For house 5 600 euro For school all-in cost (important for remedy) For reduce the content of natural radionuclides in drinking water 56 000 euro The State office for Nuclear Safety inspected all remedy off Radon department have 150 thousand euro every year to carry out Radon program

Radon program / second period / grant Year Money in total (mil. Kč) Grant (mil. Kč) Number of remedies Houses Schools Water line School 2010 31,65 2,30 0,47 28,88 17 1 15 2011 15,43 2,22 0,46 12,75 16 2 6 2012 15,22 2,00 0,52 12,70 14 2013 13,69 1,43 4,59 7,67 10 5 2014 6,24 0,30 3,03 2,91 2015 6,69 0,73 1,05 4,91 3 4 2016 10,09 1,07 4,75 4,27 8 In total 3,7 mil euro 0,37 mil euro 0,550 mil euro 2,75 mil 72 22 41

Information We provide information by web side or personally

SONS cooperate with regional authority and Ministry of Finance, Ministry of Industry and Trade. The measurement carry out State institute for radiation protection Every year in January we have meeting we provide information about measuring, legislations, experience. We prepare new strategy for next year.

Prevention of indoor penetration of radon (1) Anyone who proposes the siting of a new building or extension with residential rooms or rooms intended to be occupied by persons shall ensure that the building site radon index is determined. (2) Anyone who reports, or applies for a permit to make modifications to a completed building that will newly comprise residential rooms or rooms intended to be occupied by persons, or applies for, or notifies of, a modification in the use of a building that will newly comprise residential rooms or rooms intended to be occupied by persons shall ensure measurement of radon activity concentration in the existing building. (3) It shall not be required to determine the building site radon index, if the building will be placed in the terrain in such a manner that all of its peripheral structures will be separated from the ground by an air layer through which air can flow freely or if a preventive anti-radon measure has been designed based on ventilation of radon from the ground outside of the structure.

Thank you for your attention marcela.bercikova@sujb.cz