{"id":98459,"date":"2021-07-28T09:15:37","date_gmt":"2021-07-28T07:15:37","guid":{"rendered":"https:\/\/obera.fr\/nase-rada\/valeurs-limites-d-exposition-professionnelle-styrene\/"},"modified":"2025-05-07T09:40:58","modified_gmt":"2025-05-07T07:40:58","slug":"valeurs-limites-d-exposition-professionnelle-styrene","status":"publish","type":"post","link":"https:\/\/obera.fr\/ro\/sfatul-nostru\/valeurs-limites-d-exposition-professionnelle-styrene\/","title":{"rendered":"Valori limit\u0103 obligatorii de expunere profesional\u0103 \u0219i stiren"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\" id=\"le-styrene-sous-tout-ses-sens\">Styrene \u00een toate formele sale<\/h2>\n\n<p>Styrenul este un <strong>compus chimic toxic <\/strong>\u0219i inflamabil <strong>produs din petrol<\/strong>. Styrene mai este cunoscut \u0219i sub urm\u0103toarele sinonime: <\/p>\n\n<ul class=\"wp-block-list\">\n<li>cinamen ;<\/li>\n\n\n\n<li>etenil benzen ;<\/li>\n\n\n\n<li>fenil-etilen\u0103 ;<\/li>\n\n\n\n<li>stiren ;<\/li>\n\n\n\n<li>stiren monomer ;<\/li>\n\n\n\n<li>benzen de vinil.<\/li>\n<\/ul>\n\n<p>Principalele<strong> produse \u0219i materiale compozite care con\u021bin stiren<\/strong> sunt urm\u0103toarele:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>polistiren ;<\/li>\n\n\n\n<li>ABS (acrilonitril-butadien-stiren) ;<\/li>\n\n\n\n<li>SAN (stiren-acrilonitril) ;<\/li>\n\n\n\n<li>SBR (cauciuc stiren-butadienic);<\/li>\n\n\n\n<li>SBL (styrene-butadiene latex);<\/li>\n\n\n\n<li>UPR (r\u0103\u0219ini poliesterice nesaturate).<\/li>\n<\/ul>\n\n<p>Styrenul este utilizat \u00een principal \u00een urm\u0103toarele industrii:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>prelucrarea materialelor plastice ;<\/li>\n\n\n\n<li>industria nautic\u0103 ;<\/li>\n\n\n\n<li>metalurgie ;<\/li>\n\n\n\n<li>caroserie, etc.<\/li>\n\n\n\n<li>fabricarea piscinelor<\/li>\n\n\n\n<li>materiale compozite (fibr\u0103 de sticl\u0103, fibr\u0103 de carbon)<\/li>\n\n\n\n<li>materiale de \u00eenalt\u0103 tehnologie (b\u0103rci \u0219i ma\u0219ini de curse, arme)<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\" id=\"vlep-styrene-valeur-limite-professionnelle-sur-8-h-et-court-terme\">VLEP stiren: valoare limit\u0103 profesional\u0103 pe 8 ore \u0219i pe termen scurt<\/h2>\n\n<p><a href=\"https:\/\/obera.fr\/ro\/sfatul-nostru\/ce-este-o-limita-de-expunere-profesionala-sau-oel\/\" data-type=\"post\" data-id=\"1999\">Decretul 2016-344 din 23 martie 2016 stabile\u0219te valori limit\u0103 de expunere profesional\u0103<\/a> obligatorii pentru stiren.<\/p>\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p><strong>Valoarea limit\u0103 profesional\u0103 pe 8 ore<\/strong> (VLEP-8h) = 100<strong>mg\/m\u00b3Valoarea limit\u0103 profesional\u0103 pe termen scurt<\/strong> (VLCT 15 mn) = 200 mg\/m\u00b3.<\/p>\n<\/blockquote>\n\n<p>Valorile limit\u0103 obligatorii de expunere profesional\u0103 (VLEP) sunt reglementate de <strong>Codul muncii<\/strong> francez. Acestea sunt definite la<strong>articolul R. 4412-149<\/strong> ca fiind<strong>concentra\u021bia medie a unei substan\u021be chimice care nu trebuie dep\u0103\u0219it\u0103<\/strong>: <\/p>\n\n<ul class=\"wp-block-list\">\n<li>la locul de munc\u0103 ;<\/li>\n\n\n\n<li>\u00een zona de respira\u021bie a angaja\u021bilor.<\/li>\n<\/ul>\n\n<p>Indiferent dac\u0103 sunt <strong>orientative sau obligatorii,<\/strong> VLEP impun \u00eentreprinderilor <strong>verificarea anual\u0103 a <\/strong>acestor valori <strong>de c\u0103tre un organism acreditat COFRAC<\/strong>. La evaluarea expunerii angaja\u021bilor la poluan\u021bii de la locul de munc\u0103, <strong>VLEP sunt utilizate ca valoare de referin\u021b\u0103<\/strong>. <\/p>\n\n<p>Prin m\u0103surarea nivelurilor de concentra\u021bie ale poluan\u021bilor din aerul de la locul de munc\u0103, este posibil s\u0103 se determine ce m\u0103suri trebuie luate pentru :<\/p>\n\n<ul class=\"wp-block-list\">\n<li>siguran\u021ba la locul de munc\u0103 ;<\/li>\n\n\n\n<li>prevenirea riscurilor ;<\/li>\n\n\n\n<li>protec\u021bie colectiv\u0103.<\/li>\n<\/ul>\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>V\u0103 rug\u0103m s\u0103 re\u021bine\u021bi: \u00een Fran\u021ba, <a href=\"https:\/\/obera.fr\/ro\/sfatul-nostru\/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\/\">stirenul nu este o substan\u021b\u0103 chimic\u0103 clasificat\u0103 ca CMR<\/a> (cancerigen\u0103, mutagen\u0103 sau toxic\u0103 pentru reproducere).<\/p>\n<\/blockquote>\n\n<p>La nivelul Uniunii Europene, <strong>riscurile pentru s\u0103n\u0103tate \u0219i siguran\u021b\u0103 asociate expunerii la stiren<\/strong> sunt enumerate dup\u0103 cum urmeaz\u0103:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>toxicitate prin aspira\u021bie ;<\/li>\n\n\n\n<li>toxicitate acut\u0103 prin inhalare &#8211; vapori ;<\/li>\n\n\n\n<li>coroziune iritarea pielii ;<\/li>\n\n\n\n<li>leziuni oculare grave\/iritare ocular\u0103 ;<\/li>\n\n\n\n<li>toxicitate pentru reproducere ;<\/li>\n\n\n\n<li>toxicitate acvatic\u0103 cronic\u0103 (riscuri pentru mediu).<\/li>\n<\/ul>\n\n<h2 class=\"wp-block-heading\" id=\"sous-quelles-formes-retrouve-t-on-les-styrenes-et-comment-les-traiter\">Ce forme iau stirenele \u0219i cum pot fi tratate?<\/h2>\n\n<p>Styrenele se g\u0103sesc \u00een general sub form\u0103 gazoas\u0103 \u00een industrie. Solu\u021biile presupun, \u00een general, extragerea poluan\u021bilor la locul de munc\u0103 \u0219i evacuarea lor \u00een exterior, cu sau f\u0103r\u0103 tratament, \u00een func\u021bie de <a href=\"https:\/\/obera.fr\/ro\/sfatul-nostru\/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\/\">constr\u00e2ngerile de reglementare<\/a>. Poluan\u021bii stirenici pot fi filtra\u021bi \u0219i separa\u021bi pe c\u0103rbune activ. \u00cen func\u021bie de concentra\u021bii, sunt preferate urm\u0103toarele:   <\/p>\n\n<ul class=\"wp-block-list\">\n<li>c\u0103rbune activ pentru concentra\u021bii mici p\u00e2n\u0103 la foarte mici. Deoarece carbonul activ poate adsorbi maximum 40% din greutatea sa, este u\u0219or de estimat consumul necesar de carbon activ. <\/li>\n\n\n\n<li>Procese oxidative (oxidare termic\u0103 sau oxidare catalitic\u0103) pentru concentra\u021bii mai mari \u0219i, \u00een mod ideal, pentru tratament autotermic (f\u0103r\u0103 oxidant suplimentar pentru a men\u021bine procesul de oxidare).<\/li>\n<\/ul>\n\n<p>Pute\u021bi g\u0103si toate <a href=\"https:\/\/obera.fr\/ro\/produits\/traitement-cov\/\" data-type=\"page\" data-id=\"36\">solu\u021biile pentru tratarea COV-urilor cu ajutorul c\u0103rbunelui activ<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Obera proiecteaz\u0103 echipamente care respect\u0103 aceste OEL-uri. Afla\u021bi mai multe despre limitele de expunere profesional\u0103 pentru stiren: compusul s\u0103u chimic toxic, sectoarele vizate, OEL recomandat \u0219i tratamentele posibile. <\/p>\n","protected":false},"author":4,"featured_media":98356,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"none","_seopress_titles_title":"Tot ce trebuie s\u0103 \u0219ti\u021bi despre OEL restrictive \u0219i stiren","_seopress_titles_desc":"Afla\u021bi mai multe despre limitele de expunere ocupa\u021bional\u0103 pentru stiren. Obera proiecteaz\u0103 echipamente care respect\u0103 aceste OEL-uri. ","_seopress_robots_index":"","footnotes":""},"categories":[144],"tags":[145],"class_list":["post-98459","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sfatul-nostru","tag-entete-mic","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\/ro\/wp-json\/wp\/v2\/posts\/98459","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/obera.fr\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/obera.fr\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/obera.fr\/ro\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/obera.fr\/ro\/wp-json\/wp\/v2\/comments?post=98459"}],"version-history":[{"count":3,"href":"https:\/\/obera.fr\/ro\/wp-json\/wp\/v2\/posts\/98459\/revisions"}],"predecessor-version":[{"id":98498,"href":"https:\/\/obera.fr\/ro\/wp-json\/wp\/v2\/posts\/98459\/revisions\/98498"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/obera.fr\/ro\/wp-json\/wp\/v2\/media\/98356"}],"wp:attachment":[{"href":"https:\/\/obera.fr\/ro\/wp-json\/wp\/v2\/media?parent=98459"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/obera.fr\/ro\/wp-json\/wp\/v2\/categories?post=98459"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/obera.fr\/ro\/wp-json\/wp\/v2\/tags?post=98459"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}