{"id":98329,"date":"2021-07-29T09:25:37","date_gmt":"2021-07-29T07:25:37","guid":{"rendered":"https:\/\/obera.fr\/nase-rada\/vlep-chrome-hexavalent-valeurs-limites-exposition-professionnelle-contraignantes\/"},"modified":"2025-05-07T09:34:20","modified_gmt":"2025-05-07T07:34:20","slug":"vlep-chrome-hexavalent-valeurs-limites-exposition-professionnelle-contraignantes","status":"publish","type":"post","link":"https:\/\/obera.fr\/cs\/nase-rady\/vlep-chrome-hexavalent-valeurs-limites-exposition-professionnelle-contraignantes\/","title":{"rendered":"Restriktivn\u00ed VLEP a \u0161estimocn\u00fd chrom"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\" id=\"le-chrome-hexavalent-c-est-quoi\">Co je \u0161estimocn\u00fd chrom?<\/h2>\n\n<p><strong>\u0160estimocn\u00fd chrom neboli chrom VI <\/strong>je \u0161est\u00fd oxida\u010dn\u00ed stupe\u0148 chromu. \u0160estimocn\u00fd chrom je zn\u00e1m\u00fd tak\u00e9 pod sv\u00fdmi synonymy : <\/p>\n\n<ul class=\"wp-block-list\">\n<li>oxid chromit\u00fd ;<\/li>\n\n\n\n<li>anhydrid chromit\u00fd ;<\/li>\n\n\n\n<li>oxid chromit\u00fd VI ;<\/li>\n\n\n\n<li>anhydrid chromu ;<\/li>\n\n\n\n<li>oxid chromit\u00fd.<\/li>\n<\/ul>\n\n<p><strong>Hlavn\u00ed l\u00e1tky obsahuj\u00edc\u00ed \u0161estimocn\u00fd chrom<\/strong> nebo chrom VI jsou n\u00e1sleduj\u00edc\u00ed:<\/p>\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"150\" height=\"50\" src=\"https:\/\/obera.fr\/wp-content\/uploads\/2022\/06\/K2Cr2O7.jpg\" alt=\"k2cr2o7\" class=\"wp-image-13364\"\/><\/figure>\n\n\n\n<p class=\"has-text-align-center\">Dichroman draseln\u00fd<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"150\" height=\"50\" src=\"https:\/\/obera.fr\/wp-content\/uploads\/2022\/06\/K2Cr2O7-1.jpg\" alt=\"NaHCO3\" class=\"wp-image-13368\"\/><\/figure>\n\n\n\n<p class=\"has-text-align-center\">Dichromany sodn\u00e9 a draseln\u00e9<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image aligncenter size-full\"><img decoding=\"async\" width=\"150\" height=\"50\" src=\"https:\/\/obera.fr\/wp-content\/uploads\/2022\/06\/K2Cr2O7-2.jpg\" alt=\"SrCrO4\" class=\"wp-image-13371\"\/><\/figure>\n\n\n\n<p class=\"has-text-align-center\">Chroman stroncia<\/p>\n<\/div>\n<\/div>\n\n<p><strong>\u0160estimocn\u00fd chrom a jeho slou\u010deniny<\/strong> se pou\u017e\u00edvaj\u00ed zejm\u00e9na v n\u00e1sleduj\u00edc\u00edch pr\u016fmyslov\u00fdch odv\u011btv\u00edch:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>ocel\u00e1\u0159sk\u00fd pr\u016fmysl (chrom pro v\u00fdrobu nerezov\u00fdch a speci\u00e1ln\u00edch ocel\u00ed a slitin) ;<\/li>\n<\/ul>\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/obera.fr\/wp-content\/uploads\/2022\/07\/Siderurgie.jpg\" alt=\"siderurgy\" class=\"wp-image-13766\" width=\"300\" height=\"113\" srcset=\"https:\/\/obera.fr\/wp-content\/uploads\/2022\/07\/Siderurgie.jpg 400w, https:\/\/obera.fr\/wp-content\/uploads\/2022\/07\/Siderurgie-300x113.jpg 300w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure>\n\n<ul class=\"wp-block-list\">\n<li>chemick\u00fd pr\u016fmysl (v\u00fdroba slou\u010denin chromu) ;<\/li>\n<\/ul>\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/obera.fr\/wp-content\/uploads\/2022\/07\/Produit-chimique.jpg\" alt=\"Chemick&#xFD; pr&#x16F;mysl\" class=\"wp-image-13772\" width=\"300\" height=\"113\" srcset=\"https:\/\/obera.fr\/wp-content\/uploads\/2022\/07\/Produit-chimique.jpg 400w, https:\/\/obera.fr\/wp-content\/uploads\/2022\/07\/Produit-chimique-300x113.jpg 300w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure>\n\n<ul class=\"wp-block-list\">\n<li>Povrchov\u00e1 \u00faprava (elektrolytick\u00e9 chromov\u00e1n\u00ed, tvrd\u00e9 chromov\u00e1n\u00ed, dekorativn\u00ed chromov\u00e1n\u00ed) ;<\/li>\n<\/ul>\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/obera.fr\/wp-content\/uploads\/2022\/07\/Traitement-des-surfaces.jpg\" alt=\"&#xFA;prava povrch&#x16F;\" class=\"wp-image-13775\" width=\"300\" height=\"113\" srcset=\"https:\/\/obera.fr\/wp-content\/uploads\/2022\/07\/Traitement-des-surfaces.jpg 400w, https:\/\/obera.fr\/wp-content\/uploads\/2022\/07\/Traitement-des-surfaces-300x113.jpg 300w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure>\n\n<ul class=\"wp-block-list\">\n<li>d\u0159evozpracuj\u00edc\u00ed pr\u016fmysl (ochrana p\u0159\u00edrody) ;<\/li>\n<\/ul>\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/obera.fr\/wp-content\/uploads\/2022\/07\/Travail-du-bois.jpg\" alt=\"obr&#xE1;b&#x11B;n&#xED; d&#x159;eva\" class=\"wp-image-13769\" width=\"300\" height=\"113\" srcset=\"https:\/\/obera.fr\/wp-content\/uploads\/2022\/07\/Travail-du-bois.jpg 400w, https:\/\/obera.fr\/wp-content\/uploads\/2022\/07\/Travail-du-bois-300x113.jpg 300w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure>\n\n<ul class=\"wp-block-list\">\n<li>v\u00fdroba pigment\u016f a barviv ;<\/li>\n<\/ul>\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/obera.fr\/wp-content\/uploads\/2022\/07\/Fabrication-de-pigment.jpg\" alt=\"v&#xFD;roba pigment&#x16F; a barviv\" class=\"wp-image-13778\" width=\"300\" height=\"113\" srcset=\"https:\/\/obera.fr\/wp-content\/uploads\/2022\/07\/Fabrication-de-pigment.jpg 400w, https:\/\/obera.fr\/wp-content\/uploads\/2022\/07\/Fabrication-de-pigment-300x113.jpg 300w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure>\n\n<ul class=\"wp-block-list\">\n<li>\u010din\u011bn\u00ed k\u016f\u017e\u00ed ;<\/li>\n<\/ul>\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/obera.fr\/wp-content\/uploads\/2022\/07\/Tannage-du-cuir.jpg\" alt=\"&#x10D;in&#x11B;n&#xED; k&#x16F;&#x17E;&#xED;\" class=\"wp-image-13782\" width=\"300\" height=\"113\" srcset=\"https:\/\/obera.fr\/wp-content\/uploads\/2022\/07\/Tannage-du-cuir.jpg 400w, https:\/\/obera.fr\/wp-content\/uploads\/2022\/07\/Tannage-du-cuir-300x113.jpg 300w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure>\n\n<ul class=\"wp-block-list\">\n<li>Leteck\u00fd pr\u016fmysl (antikorozn\u00ed n\u00e1t\u011br, brou\u0161en\u00ed, brou\u0161en\u00ed atd.) ;<\/li>\n<\/ul>\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/obera.fr\/wp-content\/uploads\/2021\/07\/Aeronautique.jpg\" alt=\"letectv&#xED;\" class=\"wp-image-13786\" width=\"300\" height=\"113\" srcset=\"https:\/\/obera.fr\/wp-content\/uploads\/2021\/07\/Aeronautique.jpg 400w, https:\/\/obera.fr\/wp-content\/uploads\/2021\/07\/Aeronautique-300x113.jpg 300w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure>\n\n<ul class=\"wp-block-list\">\n<li>\u00dadr\u017eba letadel (lakov\u00e1n\u00ed) ;<\/li>\n<\/ul>\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/obera.fr\/wp-content\/uploads\/2022\/07\/aeronautique-peinture.jpg\" alt=\"leteck&#xE9; mal&#xED;&#x159;stv&#xED;\" class=\"wp-image-13789\" width=\"300\" height=\"113\" srcset=\"https:\/\/obera.fr\/wp-content\/uploads\/2022\/07\/aeronautique-peinture.jpg 400w, https:\/\/obera.fr\/wp-content\/uploads\/2022\/07\/aeronautique-peinture-300x113.jpg 300w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/figure>\n\n<h2 class=\"wp-block-heading\" id=\"vlep-chrome-hexavalent-valeur-limite-professionnelle-sur-8h-et-court-terme\">VLEP \u0161estimocn\u00fd chrom: kr\u00e1tkodob\u00e1 a 8hodinov\u00e1 limitn\u00ed hodnota pro pracovn\u00ed prost\u0159ed\u00ed<\/h2>\n\n<p>\u0160estimocn\u00fd chrom a jeho slou\u010deniny jsou <strong><a href=\"https:\/\/obera.fr\/conseils\/substances-cmr-risque-exposition-au-travail-quelle-reglementation-prevention\/\" data-type=\"URL\" data-id=\"https:\/\/obera.fr\/conseils\/substances-cmr-risque-exposition-au-travail-quelle-reglementation-prevention\/\">chemick\u00e9 l\u00e1tky klasifikovan\u00e9 jako CMR<\/a><\/strong> (karcinogenn\u00ed, mutagenn\u00ed nebo toxick\u00e9 pro reprodukci): C1A, M1B, R2.<\/p>\n\n<p>Vyhl\u00e1\u0161ka 2020-1546 ze dne 9. prosince 2020 stanov\u00ed z\u00e1vazn\u00e9 limitn\u00ed hodnoty expozice na pracovi\u0161ti<a href=\"https:\/\/obera.fr\/cs\/nase-rada\/co-je-to-expozicni-limit-na-pracovisti-nebo-oel\/\" data-type=\"post\" data-id=\"1999\">(OELV)<\/a> pro \u0161estimocn\u00fd chrom a jeho slou\u010deniny.<\/p>\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Mezn\u00ed hodnota pro pracovn\u00ed prost\u0159ed\u00ed po dobu 8 hodin<\/strong> (VLEP-8h) = 0,001 mg\/m\u00b3 <strong>Kr\u00e1tkodob\u00e1 mezn\u00ed hodnota pro pracovn\u00ed prost\u0159ed\u00ed<\/strong> (VLCT) = 0,005 mg\/m\u00b3<\/p>\n<\/blockquote>\n\n<p><strong>Z\u00e1vazn\u00e9 <\/strong>a <strong>orienta\u010dn\u00ed<\/strong> <strong>TLV <\/strong>p\u0159edstavuj\u00ed referen\u010dn\u00ed hodnotu p\u0159i <strong>posuzov\u00e1n\u00ed expozice pracovn\u00edk\u016f \u0161kodlivin\u00e1m na pracovi\u0161ti<\/strong>. M\u011b\u0159en\u00ed \u00farovn\u00ed koncentrac\u00ed zne\u010di\u0161\u0165uj\u00edc\u00edch l\u00e1tek v ovzdu\u0161\u00ed na pracovi\u0161ti slou\u017e\u00ed ke stanoven\u00ed opat\u0159en\u00ed k prevenci rizik, kter\u00e1 je t\u0159eba prov\u00e9st. <\/p>\n\n<p>Stoj\u00ed za p\u0159e\u010dten\u00ed tak\u00e9: Jak\u00e1 jsou rizika <a href=\"https:\/\/obera.fr\/cs\/nase-rada\/jaka-jsou-rizika-nedodrzeni-vlep\/\" data-type=\"post\" data-id=\"1816\">nedodr\u017eov\u00e1n\u00ed VLEP<\/a>?<\/p>\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p><strong>Koncentrace chemick\u00fdch l\u00e1tek v ovzdu\u0161\u00ed pracovi\u0161\u0165 se vyjad\u0159uje v :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>mg\/m\u00b3 pro kapaln\u00e9 a pevn\u00e9 aerosoly ;<\/li>\n\n\n\n<li>ppm (parts per million) nebo ml\/m\u00b3 pro plyny a\/nebo p\u00e1ry ;<\/li>\n\n\n\n<li>vl\u00e1kna\/cm\u00b3 pro vl\u00e1kna.<\/li>\n<\/ul>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p><strong>Limitn\u00ed hodnota expozice na pracovi\u0161ti se m\u011b\u0159\u00ed na :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>osmihodinov\u00e9 referen\u010dn\u00ed obdob\u00ed pro osmihodinov\u00fd VLEP ;<\/li>\n\n\n\n<li>maxim\u00e1ln\u00ed dobu trv\u00e1n\u00ed 15 minut pro kr\u00e1tkodob\u00e9 TLV.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n\n<h2 class=\"wp-block-heading\" id=\"sous-quelles-formes-retrouve-t-on-le-chrome-vi-ou-le-chrome-hexavalent-et-comment-le-traiter\">V jak\u00fdch form\u00e1ch se vyskytuje \u0161estimocn\u00fd chrom a jak se s n\u00edm zach\u00e1z\u00ed?<\/h2>\n\n<p>Chrom 6 se obvykle vyskytuje ve form\u011b prachu nebo je v prachu obsa\u017een. Tato zne\u010di\u0161\u0165uj\u00edc\u00ed l\u00e1tka vznik\u00e1 p\u0159i obr\u00e1b\u011bn\u00ed, tvarov\u00e1n\u00ed nebo p\u0159epracov\u00e1n\u00ed materi\u00e1l\u016f obsahuj\u00edc\u00edch nebo pota\u017een\u00fdch chromem VI. <\/p>\n\n<p>\u0160estimocn\u00fd chrom ve form\u011b prachu lze zpracov\u00e1vat pomoc\u00ed filtr\u016f \u010d\u00e1stic t\u0159\u00eddy H a\/nebo HEPA H13 nebo H14. Ve\u0161ker\u00e9 roztoky pro \u00fapravu t\u011bkav\u00fdch organick\u00fdch l\u00e1tek naleznete na adrese https:\/\/obera.fr\/produits\/depoussiereurs-industriels. <\/p>\n\n<p>Dal\u0161\u00ed informace: <a href=\"https:\/\/obera.fr\/cs\/nase-rady\/reglementation-vlep-evaluation-risque-chimique-lieu-de-travail\/\" data-type=\"URL\" data-id=\"https:\/\/obera.fr\/conseils\/reglementation-vlep-evaluation-risque-chimique-lieu-de-travail\/\">p\u0159edpisy VLEP, hodnocen\u00ed chemick\u00fdch rizik na pracovi\u0161ti<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0160estimocn\u00fd chrom a jeho slou\u010deniny jsou chemick\u00e9 l\u00e1tky klasifikovan\u00e9 jako CMR (karcinogenn\u00ed, mutagenn\u00ed nebo toxick\u00e9 pro reprodukci): C1A, M1B, R2. Jak\u00e9 jsou hlavn\u00ed l\u00e1tky? Jak\u00e9 jsou hodnoty TLV a jak s nimi lze zach\u00e1zet?  <\/p>\n","protected":false},"author":4,"featured_media":98209,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"none","_seopress_titles_title":"V\u00e1z\u00e1n\u00ed ELV : Co je to \u0161estimocn\u00fd chrom?","_seopress_titles_desc":"Zjist\u011bte v\u00edce informac\u00ed o limitn\u00edch hodnot\u00e1ch expozice \u0161estimocn\u00e9ho chromu p\u0159i pr\u00e1ci. Spole\u010dnost Obera navrhuje za\u0159\u00edzen\u00ed, kter\u00e1 jsou schopna tyto OEL splnit. ","_seopress_robots_index":"","footnotes":""},"categories":[310],"tags":[113],"class_list":["post-98329","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nase-rady","tag-entete-male","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50","no-featured-image-padding","resize-featured-image"],"acf":[],"_links":{"self":[{"href":"https:\/\/obera.fr\/cs\/wp-json\/wp\/v2\/posts\/98329","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/obera.fr\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/obera.fr\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/obera.fr\/cs\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/obera.fr\/cs\/wp-json\/wp\/v2\/comments?post=98329"}],"version-history":[{"count":1,"href":"https:\/\/obera.fr\/cs\/wp-json\/wp\/v2\/posts\/98329\/revisions"}],"predecessor-version":[{"id":98331,"href":"https:\/\/obera.fr\/cs\/wp-json\/wp\/v2\/posts\/98329\/revisions\/98331"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/obera.fr\/cs\/wp-json\/wp\/v2\/media\/98209"}],"wp:attachment":[{"href":"https:\/\/obera.fr\/cs\/wp-json\/wp\/v2\/media?parent=98329"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/obera.fr\/cs\/wp-json\/wp\/v2\/categories?post=98329"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/obera.fr\/cs\/wp-json\/wp\/v2\/tags?post=98329"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}