{"id":19746,"date":"2015-02-04T19:48:10","date_gmt":"2015-02-04T18:48:10","guid":{"rendered":"http:\/\/www.invarena.cz\/?p=19746"},"modified":"2015-02-04T19:48:10","modified_gmt":"2015-02-04T18:48:10","slug":"cechy-ohrozuje-radon-v-budovach-normy-jsou-pry-prilis-mirne","status":"publish","type":"post","link":"https:\/\/www.invarena.cz\/?p=19746","title":{"rendered":"\u010cechy ohro\u017euje radon v budov\u00e1ch, normy jsou pr\u00fd p\u0159\u00edli\u0161 m\u00edrn\u00e9"},"content":{"rendered":"

T\u0159etina \u010cech\u016f je vystavena nadpr\u016fm\u011brn\u00e9 koncentraci radonu v budov\u00e1ch, ro\u010dn\u011b kv\u016fli tomu zem\u0159e na rakovinu plic kolem 900 lid\u00ed, tvrd\u00ed St\u00e1tn\u00ed zdravotn\u00ed \u00fastav (SZ\u00da). To je v\u00fdrazn\u011b v\u00edce ne\u017e nap\u0159\u00edklad p\u0159i dopravn\u00edch nehod\u00e1ch. N\u011bkte\u0159\u00ed odborn\u00edci a stava\u0159i proto soud\u00ed, \u017ee jsou \u010desk\u00e9 normy p\u0159\u00edli\u0161 m\u00edrn\u00e9 a navrhuj\u00ed jejich zp\u0159\u00edsn\u011bn\u00ed. St\u00e1t to v\u0161ak zat\u00edm nepl\u00e1nuje.<\/strong><\/p>\n

Radon v budov\u00e1ch p\u0159edstavuje pro \u010cechy nejv\u00fdznamn\u011bj\u0161\u00ed zdroj ionuzuj\u00edc\u00edho z\u00e1\u0159en\u00ed. Ve vzduchu je p\u0159itom jeho koncentrace pom\u011brn\u011b n\u00edzk\u00e1, pohybuje se kolem 10 Bq\/m3 (Becquerel\u016f na metr krychlov\u00fd). V budov\u00e1ch v\u0161ak v\u00fdrazn\u011b roste, nejsou v\u00fdjimkou ani hodnoty p\u0159esahuj\u00edc\u00ed 1000 Bq\/m3. Tuto hranici podle statistik p\u0159ekra\u010duje radon ve zhruba 7,5 tis\u00edce bytech, v nich\u017e \u017eije na 20 tis\u00edc lid\u00ed.<\/p>\n

To u\u017e m\u016f\u017ee zp\u016fsobit v\u00e1\u017en\u00e9 zdravotn\u00ed probl\u00e9my. „Pokud je koncentrace radonu vy\u0161\u0161\u00ed ne\u017e pr\u016fm\u011brn\u00e1, tedy 118 Bq\/m3, kter\u00e9 je vystaveno zhruba 30 procent \u010desk\u00e9 populace, je relativn\u00ed riziko vzniku zhoubn\u00e9ho onemocn\u011bn\u00ed vy\u0161\u0161\u00ed ne\u017e 16 procent,“ varuje na sv\u00fdch internetov\u00fdch str\u00e1nk\u00e1ch St\u00e1tn\u00ed zdravotn\u00ed \u00fastav (SZU), podle n\u011bj\u017e kv\u016fli vysok\u00e9 koncentraci radonu v \u010cesku ro\u010dn\u011b zem\u0159e kolem 900 lid\u00ed na zhoubn\u00e9 plicn\u00ed onemocn\u011bn\u00ed. „To je zhruba 16 procent v\u0161ech \u00famrt\u00ed na plicn\u00ed n\u00e1dory,“ vypo\u010detl SZU.<\/p>\n

Podle p\u0159edsedy p\u0159edstavenstva a gener\u00e1ln\u00edho \u0159editele developersk\u00e9 spole\u010dnosti Ekospol Ev\u017eena Korce za to mohou p\u0159\u00edli\u0161 m\u00edrn\u00e9 normy, kter\u00e9 v novostavb\u00e1ch povoluj\u00ed 200 Bq\/m3 a v rekonstruovan\u00fdch star\u00fdch domech dokonce 400 Bq\/m3. „Doporu\u010den\u00e9 hodnoty koncentrace radonu jsou v \u010cesk\u00e9 republice ve srovn\u00e1n\u00ed s N\u011bmeckem a hodnotou doporu\u010dovanou Sv\u011btovou zdravotnickou organizac\u00ed (100 Bq\/m3) p\u0159\u00edli\u0161 vysok\u00e9. <\/p>\n

Vzhledem k negativn\u00edm zdravotn\u00edm n\u00e1sledk\u016fm je nezbytn\u00e9, aby v \u010cesk\u00e9 republice do\u0161lo ke sn\u00ed\u017een\u00ed doporu\u010den\u00e9 hodnoty na tuto \u00farove\u0148. Nutn\u00e1 jsou tak\u00e9 ozdravn\u00e1 opat\u0159en\u00ed ve v\u0161ech budov\u00e1ch, kde je tato hodnota vy\u0161\u0161\u00ed,“ prohl\u00e1sil Korec s t\u00edm, \u017ee nejv\u011bt\u0161\u00ed d\u016fraz by m\u011bl b\u00fdt na \u0161kolky a \u0161koly.<\/p>\n

Stejn\u00fd n\u00e1zor m\u00e1 i soudn\u00ed znalec v oboru stavebn\u00ed fyzika a ochrana proti radonu, docent Fakulty stavebn\u00ed \u010cVUT Martin Jir\u00e1nek. „U novostaveb takov\u00e9 sn\u00ed\u017een\u00ed je ur\u010dit\u011b re\u00e1ln\u00e9. Ot\u00e1zka pak jsou st\u00e1vaj\u00edc\u00ed stavby, proto\u017ee u nich m\u016f\u017ee n\u011bco vyza\u0159ovat i stavebn\u00ed materi\u00e1l. Osobn\u011b bych byl pro limit 100 Bq\/m3 a u t\u011bch st\u00e1vaj\u00edc\u00edch j\u00edt na 200 Bq\/m3,“ \u0159ekl \u010cTK odborn\u00edk na problematiku radonu v budov\u00e1ch Jir\u00e1nek.<\/p>\n

St\u00e1tn\u00ed \u00fa\u0159ad pro jadernou bezpe\u010dnost (S\u00daJB), kter\u00fd m\u00e1 tuhle problematiku na starost, v\u0161ak \u017e\u00e1dn\u00e9 zm\u011bny v limitech nyn\u00ed nechyst\u00e1. „P\u0159ipravujeme zcela nov\u00fd atomov\u00fd z\u00e1kon. Z hlediska staveb se v n\u011bm ale nic nem\u011bn\u00ed,“ \u0159ekla na odborn\u00e9m semin\u00e1\u0159i \u010cesk\u00e9 komory autorizovan\u00fdch in\u017een\u00fdr\u016f a technik\u016f \u010dinn\u00fdch ve v\u00fdstavb\u011b (\u010cKAIT) Eva Pravdov\u00e1 ze S\u00daJB.<\/p>\n

Podle Korce by m\u011bl st\u00e1t krom\u011b zp\u0159\u00edsn\u011bn\u00ed norem nav\u00edc zajistit tak\u00e9 odstran\u011bn\u00ed radonu ze v\u0161ech ve\u0159ejn\u00fdch budov. Vlastn\u00edci soukrom\u00fdch budov na protiradonov\u00e1 opat\u0159en\u00ed mohou v ur\u010dit\u00fdch p\u0159\u00edpadech \u010derpat st\u00e1tn\u00ed dotace.<\/p>\n

Nej\u00fa\u010dinn\u011bj\u0161\u00edm zp\u016fsobem, jak vysok\u00e9 koncentrace radonu odstranit, je syst\u00e9m \u0159\u00edzen\u00e9 ventilace s rekuperac\u00ed. P\u0159i stavb\u011b lze tak\u00e9 pou\u017e\u00edt takzvan\u00e9 protiradonov\u00e9 izolace, kter\u00e9 zabra\u0148uj\u00ed pronik\u00e1n\u00ed nebezpe\u010dn\u00e9ho plynu do budovy. U d\u0159\u00edve postaven\u00fdch budov je v\u0161ak toto opat\u0159en\u00ed t\u011b\u017eko provediteln\u00e9.
\n \u010cesk\u00e1 republika se nach\u00e1z\u00ed na podlo\u017e\u00ed, kde je v mnoha oblastech vysok\u00fd pod\u00edl uranu. Kv\u016fli sv\u00e9mu p\u016fdn\u00edmu slo\u017een\u00ed m\u00e1 \u010cesko v porovn\u00e1n\u00ed s ostatn\u00edmi zem\u011bmi jedny z nejvy\u0161\u0161\u00edch koncentrac\u00ed radonu v budov\u00e1ch. Radon m\u016f\u017ee do dom\u016f vnikat ze zem\u011b net\u011bsnostmi v konstrukci staveb, z podzemn\u00ed vody a z nevhodn\u00e9ho stavebn\u00edho materi\u00e1lu. Kolik radonu ze zem\u011b vych\u00e1z\u00ed v dan\u00e9m m\u00edst\u011b lze zjistit z radonov\u00e9 mapy \u010cR, kter\u00e1 je dostupn\u00e1 na internetu. <\/p>\n","protected":false},"excerpt":{"rendered":"

T\u0159etina \u010cech\u016f je vystavena nadpr\u016fm\u011brn\u00e9 koncentraci radonu v budov\u00e1ch, ro\u010dn\u011b kv\u016fli tomu zem\u0159e na rakovinu plic kolem 900 lid\u00ed, tvrd\u00ed St\u00e1tn\u00ed zdravotn\u00ed \u00fastav (SZ\u00da). To […]<\/a><\/p>\n<\/div>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[],"class_list":["post-19746","post","type-post","status-publish","format-standard","hentry","category-zpravy"],"_links":{"self":[{"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/posts\/19746","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=19746"}],"version-history":[{"count":0,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/posts\/19746\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.invarena.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=19746"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=19746"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=19746"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}