{"id":9794,"date":"2020-11-05T16:54:47","date_gmt":"2020-11-05T15:54:47","guid":{"rendered":"https:\/\/consilab.de\/prestations\/caracteristiques-des-substances-relevant-de-la-securite\/sustained-combustility\/"},"modified":"2022-07-11T16:01:06","modified_gmt":"2022-07-11T14:01:06","slug":"combustion-entretenue","status":"publish","type":"page","link":"https:\/\/consilab.de\/fr\/prestations\/caracteristiques-des-substances-relevant-de-la-securite\/combustion-entretenue\/","title":{"rendered":"Combustion entretenue"},"content":{"rendered":"

[vc_row rt_row_background_width=\u00a0\u00bbfullwidth\u00a0\u00bb rt_row_content_width=\u00a0\u00bbdefault\u00a0\u00bb rt_row_style=\u00a0\u00bbdefault-style\u00a0\u00bb rt_row_borders=\u00a0\u00bb\u00a0\u00bb rt_row_shadows=\u00a0\u00bb\u00a0\u00bb rt_row_paddings=\u00a0\u00bbfalse\u00a0\u00bb rt_bg_effect=\u00a0\u00bbclassic\u00a0\u00bb rt_bg_image_repeat=\u00a0\u00bbrepeat\u00a0\u00bb rt_bg_size=\u00a0\u00bbcover\u00a0\u00bb rt_bg_position=\u00a0\u00bbright top\u00a0\u00bb rt_bg_attachment=\u00a0\u00bbscroll\u00a0\u00bb rt_bg_video_format=\u00a0\u00bbself-hosted\u00a0\u00bb][vc_column width=\u00a0\u00bb1\/3″ rt_column_shadow=\u00a0\u00bb\u00a0\u00bb rt_bg_image_repeat=\u00a0\u00bbrepeat\u00a0\u00bb rt_bg_size=\u00a0\u00bbauto auto\u00a0\u00bb rt_bg_attachment=\u00a0\u00bbscroll\u00a0\u00bb class=\u00a0\u00bbdownload\u00a0\u00bb rt_bg_color=\u00a0\u00bb\u00a0\u00bb rt_bg_overlay_color=\u00a0\u00bb\u00a0\u00bb offset=\u00a0\u00bbvc_hidden-sm vc_hidden-xs\u00a0\u00bb css=\u00a0\u00bb.vc_custom_1532421990135{padding-bottom: 0px !important;}\u00a0\u00bb rt_padding_bottom=\u00a0\u00bb0″][vc_widget_sidebar sidebar_id=\u00a0\u00bbrt-theme-20-common-sidebar\u00a0\u00bb][\/vc_column][vc_column width=\u00a0\u00bb2\/3″ rt_column_shadow=\u00a0\u00bb\u00a0\u00bb rt_bg_image_repeat=\u00a0\u00bbrepeat\u00a0\u00bb rt_bg_size=\u00a0\u00bbauto auto\u00a0\u00bb rt_bg_attachment=\u00a0\u00bbscroll\u00a0\u00bb class=\u00a0\u00bbmaincontent\u00a0\u00bb rt_bg_color=\u00a0\u00bb\u00a0\u00bb rt_bg_overlay_color=\u00a0\u00bb\u00a0\u00bb css=\u00a0\u00bb.vc_custom_1532421960235{margin-bottom: 1em !important;padding-bottom: 0px !important;}\u00a0\u00bb][vc_column_text el_class=\u00a0\u00bbredborderleft\u00a0\u00bb]<\/p>\n

Combustion entretenue (\u00e9preuve uno l.2)<\/h1>\n

Les liquides inflammables, dont le point d\u2019\u00e9clair en vase clos se situe entre \u2265\u00a023\u00a0\u00b0C et \u2264\u00a060\u00a0\u00b0C, doivent par principe \u00eatre class\u00e9s en priorit\u00e9 dans le groupe d\u2019emballage III de la classe 3 conform\u00e9ment au Droit des transports ONU, ainsi que dans la cat\u00e9gorie 3 conform\u00e9ment au r\u00e8glement GHS ou au r\u00e8glement CLP (CE) 1272\/2008, et \u00eatre identifi\u00e9s par un marquage \u201eAttention\u201c et par le signalement \u00a0de danger \u201eH226\u00a0: Liquide et vapeur inflammables\u201c.<\/p>\n

Pour autant que les liquides pr\u00e9sentent un point d\u2019\u00e9clair > 35 \u00b0C, ils peuvent \u00eatre exempt\u00e9s de cette classification sous r\u00e9serve qu\u2019ils n\u2019entretiennent pas la combustion de quelque fa\u00e7on que ce soit. Il est pour cela n\u00e9cessaire de pr\u00e9senter une \u00e9preuve de combustion entretenue (\u00e9preuve UNO L.2) conform\u00e9ment \u00e0 la norme DIN EN ISO 9038.<\/p>\n

Cette \u00e9preuve permet de constater si, \u00e0 des temp\u00e9ratures de test d\u00e9termin\u00e9es (60,5 \u00b0C et 75 \u00b0C) et dans des conditions d\u2019\u00e9preuve d\u00e9finies, un liquide inflammable produit suffisamment de vapeur pour entretenir ou non la combustion, apr\u00e8s qu\u2019il a \u00e9t\u00e9 enflamm\u00e9 par une source d\u2019inflammation (flamme de gaz propane) puis que cette source d\u2019inflammation a \u00e9t\u00e9 retir\u00e9e.<\/p>\n

A l\u2019aide d\u2019une pipette, on introduit 2 ml de liquide dans une cavit\u00e9 chauff\u00e9e du bloc m\u00e9tallique r\u00e9sistant \u00e0 la corrosion de l\u2019appareil. Pendant un intervalle de r\u00e9gulation de chauffage de 60\u00a0\u00b1\u00a02\u00a0s, l\u2019\u00e9chantillon de substance est amen\u00e9 \u00e0 la temp\u00e9rature d\u00e9finie (60,5\u00a0\u00b0C ou 75\u00a0\u00b0C). Dans l\u00b4\u2019hypoth\u00e8se o\u00f9 le liquide ne s\u2019est pas encore enflamm\u00e9, on place la flamme du gaz en position d\u2019\u00e9preuve au-dessus du bord de la surface du liquide et l\u2019on maintient cette flamme en position pendant 15 secondes.<\/p>\n

On observe alors le comportement de l\u2019\u00e9chantillon.<\/p>\n

 <\/p>\n

\"\"<\/p>\n

Si l\u2019on ne constate pas de combustion entretenue pendant la dur\u00e9e du chauffage ou apr\u00e8s avoir plac\u00e9 la flamme en position d\u2019\u00e9preuve et l\u2019avoir repouss\u00e9e, il convient de r\u00e9p\u00e9ter l\u2019\u00e9preuve avec une dur\u00e9e de chauffage r\u00e9duite \u00e0 30\u00a0\u00b1\u00a01\u00a0s.<\/p>\n

S\u2019il ne se produit aucune combustion entretenue lors de toutes les \u00e9preuves r\u00e9alis\u00e9es, ni au cours de la dur\u00e9e de chauffage, ni lors du maintien de la flamme, il convient de classer la substance test\u00e9e comme n\u2019entretenant pas la combustion, et celle-ci sera alors \u00e9cart\u00e9e de cette classification.<\/p>\n

Il convient cependant de classer la substance test\u00e9e comme entretenant la combustion si, au cours d\u2019une des \u00e9preuves r\u00e9alis\u00e9es, il se produit l\u2019une des r\u00e9actions suivantes\u00a0:<\/p>\n

    \n
  1. a) l\u2019\u00e9chantillon s\u2019enflamme pendant le temps de chauffage<\/li>\n
  2. b) l\u2019\u00e9chantillon s\u2019enflamme lorsque la flamme est plac\u00e9e en position d\u2019\u00e9preuve et qu\u2019elle y reste maintenue pendant 15 s, et que sa combustion se poursuit plus de 15 s alors que la flamme a \u00e9t\u00e9 replac\u00e9e en position \u201earr\u00eat\u201c.<\/li>\n<\/ol>\n

    Une inflammation intermittente qui dure moins de 15 s ne doit pas \u00eatre interpr\u00e9t\u00e9e comme un signe de combustion entretenue.<\/p>\n

    Normalement, au bout de 15 s, la combustion s\u2019est soit ind\u00e9niablement interrompue, soit elle se poursuit. En cas de doute, la substance doit \u00eatre r\u00e9put\u00e9e entretenir la combustion.<\/p>\n

    Bibliographie<\/strong>
    \n<\/strong>DIN EN ISO 9038 : \u00c9preuve de combustion entretenue de liquides<\/p>\n

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    more | mehr<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":9313,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-9794","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/consilab.de\/fr\/wp-json\/wp\/v2\/pages\/9794","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/consilab.de\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/consilab.de\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/consilab.de\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/consilab.de\/fr\/wp-json\/wp\/v2\/comments?post=9794"}],"version-history":[{"count":1,"href":"https:\/\/consilab.de\/fr\/wp-json\/wp\/v2\/pages\/9794\/revisions"}],"predecessor-version":[{"id":12087,"href":"https:\/\/consilab.de\/fr\/wp-json\/wp\/v2\/pages\/9794\/revisions\/12087"}],"up":[{"embeddable":true,"href":"https:\/\/consilab.de\/fr\/wp-json\/wp\/v2\/pages\/9313"}],"wp:attachment":[{"href":"https:\/\/consilab.de\/fr\/wp-json\/wp\/v2\/media?parent=9794"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}