{"id":98334,"date":"2021-07-29T09:25:37","date_gmt":"2021-07-29T07:25:37","guid":{"rendered":"https:\/\/obera.fr\/our-advice\/vlep-chrome-hexavalent-valeurs-limites-exposition-professionnelle-contraignantes\/"},"modified":"2025-05-07T09:34:11","modified_gmt":"2025-05-07T07:34:11","slug":"vlep-chrome-hexavalent-valeurs-limites-exposition-professionnelle-contraignantes","status":"publish","type":"post","link":"https:\/\/obera.fr\/en\/our-tips\/vlep-chrome-hexavalent-valeurs-limites-exposition-professionnelle-contraignantes\/","title":{"rendered":"Restrictive VLEP and hexavalent chromium"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\" id=\"le-chrome-hexavalent-c-est-quoi\">What is hexavalent chromium?<\/h2>\n\n<p><strong>Hexavalent chromium or chromium VI <\/strong>is the 6th oxidation state of chromium. Hexavalent chromium is also known by its synonyms : <\/p>\n\n<ul class=\"wp-block-list\">\n<li>chromium trioxide ;<\/li>\n\n\n\n<li>chromic anhydride ;<\/li>\n\n\n\n<li>chromium VI oxide ;<\/li>\n\n\n\n<li>chromium anhydride ;<\/li>\n\n\n\n<li>chromic trioxide.<\/li>\n<\/ul>\n\n<p>The <strong>main substances containing hexavalent chromium<\/strong> or chromium VI are as follows:<\/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\">Potassium dichromate<\/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\">Sodium and potassium dichromates<\/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\">Strontium chromate<\/p>\n<\/div>\n<\/div>\n\n<p><strong>Hexavalent chromium and its compounds<\/strong> are mainly used in the following industries:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>steel industry (chromium for the production of stainless steels, special steels and alloys);<\/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>chemical industries (production of chromium compounds) ;<\/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=\"Chemical industry\" 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>Surface treatment (electrolytic chromium plating, hard chromium plating, decorative chromium plating);<\/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=\"surface treatment\" 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>woodworking industries (conservation) ;<\/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=\"Woodworking\" 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>manufacture of pigments and dyes ;<\/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=\"manufacture of pigments and dyes\" 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>leather tanning ;<\/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=\"leather tanning\" 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>Aerospace (corrosion-resistant paint, sanding, grinding, 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=\"aeronautics\" 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>Aircraft maintenance (paint rework) ;<\/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=\"aeronautical painting\" 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 hexavalent chromium: 8-hour and short-term occupational limit value<\/h2>\n\n<p>Hexavalent chromium and its compounds are chemical substances <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\/\">chemical substances classified as CMR<\/a><\/strong> (carcinogenic, mutagenic or toxic to reproduction): C1A, M1B, R2.<\/p>\n\n<p>Decree 2020-1546 of December 9, 2020 sets binding occupational exposure limit values<a href=\"https:\/\/obera.fr\/en\/our-tips\/valeur-limite-exposition-professionnelle-ou-vlep\/\" data-type=\"post\" data-id=\"1999\">(OELVs<\/a>) for hexavalent chromium and its compounds.<\/p>\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>8-hour occupational limit value<\/strong> (VLEP-8h) = 0.001 mg\/m\u00b3 <strong>Short-term occupational limit value<\/strong> (VLCT) = 0.005 mg\/m\u00b3<\/p>\n<\/blockquote>\n\n<p><strong>Binding <\/strong>and <strong>indicative<\/strong> <strong>TLVs <\/strong>introduce a reference value when <strong>assessing workers&#8217; exposure to pollutants in the workplace<\/strong>. Measurements of pollutant concentration levels in workplace air help determine which risk prevention measures to implement. <\/p>\n\n<p>Also read: What are the risks of <a href=\"https:\/\/obera.fr\/en\/our-tips\/vlep-quels-risques-cas-de-non-respect-reglementation\/\" data-type=\"post\" data-id=\"1816\">not complying with 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>The concentration of chemical agents in the atmosphere of workplaces is expressed in :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>mg\/m\u00b3 for liquid and solid aerosols ;<\/li>\n\n\n\n<li>ppm (parts per million) or ml\/m\u00b3 for gases and\/or vapors ;<\/li>\n\n\n\n<li>fibers\/cm\u00b3 for fibers.<\/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>The occupational exposure limit value is measured on :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>an 8-hour reference period for 8-hour VLEP ;<\/li>\n\n\n\n<li>a maximum duration of 15 min for short-term TLVs.<\/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\">What forms does chromium VI or hexavalent chromium come in, and how can it be treated?<\/h2>\n\n<p>Chromium 6 is generally found in the form of dust or contained in dust. This pollutant is generated during machining, shaping or reworking operations on materials containing or coated with chromium VI. <\/p>\n\n<p>Hexavalent chromium in dust form is treated on particulate filters of class H and\/or HEPA H13 or H14 minimum. You can find all VOC treatment solutions at https:\/\/obera.fr\/produits\/depoussiereurs-industriels. <\/p>\n\n<p>Further information: <a href=\"https:\/\/obera.fr\/en\/our-tips\/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\/\">VLEP regulations, chemical risk assessment in the workplace<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hexavalent chromium and its compounds are chemical substances classified as CMR (carcinogenic, mutagenic or toxic for reproduction): C1A, M1B, R2. What are the main substances? What are the TLVs and how can they be treated?  <\/p>\n","protected":false},"author":4,"featured_media":98212,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"none","_seopress_titles_title":"Binding ELVs : What is hexavalent chromium?","_seopress_titles_desc":"Find out more about the Occupational Exposure Limits for hexavalent chromium. Obera designs devices capable of complying with these OELs. ","_seopress_robots_index":"","footnotes":""},"categories":[309],"tags":[18],"class_list":["post-98334","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-our-tips","tag-entete-small","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\/en\/wp-json\/wp\/v2\/posts\/98334","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/obera.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/obera.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/obera.fr\/en\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/obera.fr\/en\/wp-json\/wp\/v2\/comments?post=98334"}],"version-history":[{"count":1,"href":"https:\/\/obera.fr\/en\/wp-json\/wp\/v2\/posts\/98334\/revisions"}],"predecessor-version":[{"id":98336,"href":"https:\/\/obera.fr\/en\/wp-json\/wp\/v2\/posts\/98334\/revisions\/98336"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/obera.fr\/en\/wp-json\/wp\/v2\/media\/98212"}],"wp:attachment":[{"href":"https:\/\/obera.fr\/en\/wp-json\/wp\/v2\/media?parent=98334"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/obera.fr\/en\/wp-json\/wp\/v2\/categories?post=98334"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/obera.fr\/en\/wp-json\/wp\/v2\/tags?post=98334"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}