{"id":98312,"date":"2021-07-29T09:25:37","date_gmt":"2021-07-29T07:25:37","guid":{"rendered":"https:\/\/obera.fr\/nosso-conselho\/vlep-chrome-hexavalent-valeurs-limites-exposition-professionnelle-contraignantes\/"},"modified":"2025-05-07T09:32:55","modified_gmt":"2025-05-07T07:32:55","slug":"vlep-chrome-hexavalent-valeurs-limites-exposition-professionnelle-contraignantes","status":"publish","type":"post","link":"https:\/\/obera.fr\/pt-pt\/nosso-conselho\/vlep-chrome-hexavalent-valeurs-limites-exposition-professionnelle-contraignantes\/","title":{"rendered":"VLEP restritivo e cr\u00f3mio hexavalente"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\" id=\"le-chrome-hexavalent-c-est-quoi\">O que \u00e9 o cr\u00f3mio hexavalente?<\/h2>\n\n<p>O cr\u00f3mio <strong>hexavalente ou cr\u00f3mio VI <\/strong>\u00e9 o sexto estado de oxida\u00e7\u00e3o do cr\u00f3mio. O cr\u00f3mio hexavalente \u00e9 tamb\u00e9m conhecido pelos seus sin\u00f3nimos : <\/p>\n\n<ul class=\"wp-block-list\">\n<li>tri\u00f3xido de cr\u00f3mio ;<\/li>\n\n\n\n<li>anidrido cr\u00f3mico ;<\/li>\n\n\n\n<li>\u00f3xido de cr\u00f3mio VI ;<\/li>\n\n\n\n<li>anidrido de cr\u00f3mio ;<\/li>\n\n\n\n<li>tri\u00f3xido de cr\u00f3mio.<\/li>\n<\/ul>\n\n<p>As <strong>principais subst\u00e2ncias que cont\u00eam cr\u00f3mio hexavalente<\/strong> ou cr\u00f3mio VI s\u00e3o as seguintes<\/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\">Dicromato de pot\u00e1ssio<\/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\">Dicromatos de s\u00f3dio e de pot\u00e1ssio<\/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\">Cromato de estr\u00f4ncio<\/p>\n<\/div>\n<\/div>\n\n<p><strong>O cr\u00f3mio hexavalente e os seus compostos<\/strong> s\u00e3o utilizados principalmente nas seguintes ind\u00fastrias:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>ind\u00fastria sider\u00fargica (cr\u00f3mio para a produ\u00e7\u00e3o de a\u00e7os e ligas inoxid\u00e1veis e especiais) ;<\/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=\"siderurgia\" 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>ind\u00fastrias qu\u00edmicas (produ\u00e7\u00e3o de compostos de cr\u00f3mio) ;<\/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=\"Ind&#xFA;stria qu&#xED;mica\" 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>Tratamento de superf\u00edcie (cromagem electrol\u00edtica, cromagem dura, cromagem decorativa) ;<\/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=\"tratamento de superf&#xED;cies\" 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>ind\u00fastrias da madeira (conserva\u00e7\u00e3o) ;<\/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=\"trabalho da madeira\" 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>fabrico de pigmentos e corantes ;<\/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=\"fabrico de pigmentos e corantes\" 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>curtimento de peles ;<\/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=\"curtimento de couro\" 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>Aeron\u00e1utica (pintura resistente \u00e0 corros\u00e3o, lixagem, retifica\u00e7\u00e3o, etc.) ;<\/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=\"aeron&#xE1;utica\" 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>Manuten\u00e7\u00e3o de aeronaves (pintura) ;<\/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=\"pintura aeron&#xE1;utica\" 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\">Cr\u00f3mio hexavalente VLEP: valor-limite ocupacional de curto prazo e de 8 horas<\/h2>\n\n<p>O cr\u00f3mio hexavalente e os seus compostos s\u00e3o <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\/\">subst\u00e2ncias qu\u00edmicas classificadas como CMR<\/a><\/strong> (cancer\u00edgenas, mutag\u00e9nicas ou t\u00f3xicas para a reprodu\u00e7\u00e3o): C1A, M1B, R2.<\/p>\n\n<p>O Decreto 2020-1546, de 9 de dezembro de 2020, estabelece valores-limite de exposi\u00e7\u00e3o profissional<a href=\"https:\/\/obera.fr\/pt-pt\/nosso-conselho\/o-que-e-um-limite-de-exposicao-profissional-ou-oel\/\" data-type=\"post\" data-id=\"1999\">(VLEO<\/a>) vinculativos para o cr\u00f3mio hexavalente e os seus compostos.<\/p>\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Valor limite de ocupa\u00e7\u00e3o durante 8 horas<\/strong> (VLEP-8h) = 0,001 mg\/m\u00b3 <strong>Valor limite de ocupa\u00e7\u00e3o a curto prazo<\/strong> (VLCT) = 0,005 mg\/m\u00b3<\/p>\n<\/blockquote>\n\n<p><strong>Os VLT vinculativos <\/strong>e <strong>indicativos<\/strong> introduzem um valor de refer\u00eancia aquando <strong>da avalia\u00e7\u00e3o da exposi\u00e7\u00e3o dos trabalhadores aos poluentes no local de trabalho<\/strong>. As medi\u00e7\u00f5es dos n\u00edveis de concentra\u00e7\u00e3o dos poluentes no ar do local de trabalho s\u00e3o utilizadas para determinar as medidas de preven\u00e7\u00e3o dos riscos a aplicar. <\/p>\n\n<p>Tamb\u00e9m vale a pena ler: Quais s\u00e3o os riscos de <a href=\"https:\/\/obera.fr\/pt-pt\/nosso-conselho\/quais-sao-os-riscos-de-incumprimento-da-vlep\/\" data-type=\"post\" data-id=\"1816\">n\u00e3o cumprir as 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>A concentra\u00e7\u00e3o de agentes qu\u00edmicos na atmosfera dos locais de trabalho \u00e9 expressa em :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>mg\/m\u00b3 para aeross\u00f3is l\u00edquidos e s\u00f3lidos ;<\/li>\n\n\n\n<li>ppm (partes por milh\u00e3o) ou ml\/m\u00b3 para gases e\/ou vapores ;<\/li>\n\n\n\n<li>fibras\/cm\u00b3 para fibras.<\/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>O valor limite de exposi\u00e7\u00e3o profissional \u00e9 medido em :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>um per\u00edodo de refer\u00eancia de 8 horas para o VLEP de 8 horas ;<\/li>\n\n\n\n<li>uma dura\u00e7\u00e3o m\u00e1xima de 15 minutos para os VLT de curta dura\u00e7\u00e3o.<\/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\">Em que formas se encontra o cr\u00f3mio VI ou cr\u00f3mio hexavalente e como \u00e9 tratado?<\/h2>\n\n<p>O cr\u00f3mio 6 encontra-se geralmente sob a forma de poeiras ou contido em poeiras. Este poluente \u00e9 gerado durante as opera\u00e7\u00f5es de maquinagem, moldagem ou retrabalho de materiais que cont\u00eam ou est\u00e3o revestidos de cr\u00f3mio VI. <\/p>\n\n<p>O cr\u00f3mio hexavalente sob a forma de poeiras pode ser tratado utilizando filtros de part\u00edculas de, pelo menos, classe H e\/ou HEPA H13 ou H14. Encontra todas as solu\u00e7\u00f5es de tratamento de COV em https:\/\/obera.fr\/produits\/depoussiereurs-industriels. <\/p>\n\n<p>Mais informa\u00e7\u00f5es: <a href=\"https:\/\/obera.fr\/pt-pt\/nosso-conselho\/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\/\">regulamentos VLEP, avalia\u00e7\u00e3o dos riscos qu\u00edmicos no local de trabalho<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>O cr\u00f3mio hexavalente e os seus compostos s\u00e3o produtos qu\u00edmicos classificados como CMR (carcinog\u00e9nicos, mutag\u00e9nicos ou t\u00f3xicos para a reprodu\u00e7\u00e3o): C1A, M1B, R2. Quais s\u00e3o as principais subst\u00e2ncias? Quais s\u00e3o os TLVs e como podem ser tratados?  <\/p>\n","protected":false},"author":4,"featured_media":98222,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"none","_seopress_titles_title":"Vincula\u00e7\u00e3o dos VLE : O que \u00e9 o cr\u00f3mio hexavalente?","_seopress_titles_desc":"Descobre mais sobre os Limites de Exposi\u00e7\u00e3o Ocupacional para o cr\u00f3mio hexavalente. A Obera concebe equipamentos capazes de cumprir estes OELs. ","_seopress_robots_index":"","footnotes":""},"categories":[55],"tags":[147],"class_list":["post-98312","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nosso-conselho","tag-pequena-entrada","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\/pt-pt\/wp-json\/wp\/v2\/posts\/98312","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/obera.fr\/pt-pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/obera.fr\/pt-pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/obera.fr\/pt-pt\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/obera.fr\/pt-pt\/wp-json\/wp\/v2\/comments?post=98312"}],"version-history":[{"count":1,"href":"https:\/\/obera.fr\/pt-pt\/wp-json\/wp\/v2\/posts\/98312\/revisions"}],"predecessor-version":[{"id":98314,"href":"https:\/\/obera.fr\/pt-pt\/wp-json\/wp\/v2\/posts\/98312\/revisions\/98314"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/obera.fr\/pt-pt\/wp-json\/wp\/v2\/media\/98222"}],"wp:attachment":[{"href":"https:\/\/obera.fr\/pt-pt\/wp-json\/wp\/v2\/media?parent=98312"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/obera.fr\/pt-pt\/wp-json\/wp\/v2\/categories?post=98312"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/obera.fr\/pt-pt\/wp-json\/wp\/v2\/tags?post=98312"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}