{"id":11529,"date":"2021-07-06T11:55:22","date_gmt":"2021-07-06T09:55:22","guid":{"rendered":"https:\/\/consilab.de\/prestations\/classification-des-substances\/deflagrationsfaehigkeit-im-offenen-system\/"},"modified":"2022-07-11T17:08:32","modified_gmt":"2022-07-11T15:08:32","slug":"aptitude-a-la-deflagration-dans-des-systemes-ouverts","status":"publish","type":"page","link":"https:\/\/consilab.de\/fr\/prestations\/classification-des-substances\/aptitude-a-la-deflagration-dans-des-systemes-ouverts\/","title":{"rendered":"Aptitude \u00e0 la d\u00e9flagration dans des syst\u00e8mes ouverts"},"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\u00bbtrue\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_1529335398592{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_1531993670525{padding-bottom: 2em !important;}\u00a0\u00bb][vc_column_text el_class=\u00a0\u00bbredborderleft\u00a0\u00bb]<\/p>\n

Aptitude \u00e0 la d\u00e9flagration dans des syst\u00e8mes ouverts : ONU S\u00e9rie C, \u00c9preuve C.2<\/h1>\n

Cette \u00e9preuve sert \u00e0 d\u00e9terminer si une mati\u00e8re d\u00e9clenche ou non une d\u00e9flagration dans un syst\u00e8me ouvert.<\/h2>\n

La mati\u00e8re \u00e0 tester et le vase de Dewar (voir la figure) sont port\u00e9s \u00e0 une temp\u00e9rature d\u2019\u00e9preuve d\u2019environ 50\u00b0C. Ensuite, on remplit le vase de Dewar de la mati\u00e8re \u00e0 tester jusqu\u2019\u00e0 une hauteur d\u2019environ 20 mm sous son bord. On note la masse et la temp\u00e9rature de la mati\u00e8re \u00e0 tester. On place alors le vase de Dewar dans une cellule d\u2019essai derri\u00e8re un \u00e9cran. La surface de la mati\u00e8re \u00e0 tester est alors chauff\u00e9e avec un bec de gaz (briquet \u00e0 gaz propane) pendant au moins cinq minutes.<\/p>\n

S\u2019il se produit une inflammation, on \u00e9loigne le bec de gaz. On mesure l\u2019intervalle de temps n\u00e9cessaire pour que la zone de r\u00e9action parcoure la distance entre les rep\u00e8res de 50 et 100 mm du c\u00f4t\u00e9 sup\u00e9rieur du vase de Dewar. Si dans un d\u00e9lai de cinq minutes, il ne se produit pas d\u2019inflammation ou si la zone de r\u00e9action s\u2019arr\u00eate avant d\u2019atteindre le rep\u00e8re inf\u00e9rieur, la mati\u00e8re \u00e0 tester est consid\u00e9r\u00e9 comme non d\u00e9flagrante.<\/p>\n

Si une inflammation se produit et si la zone de r\u00e9action atteint le rep\u00e8re inf\u00e9rieur, on se base sur l\u2019intervalle de temps le plus court pour le calcul du taux de d\u00e9flagration.<\/p>\n\n\n\n\n\n\n
R\u00e9sultat<\/strong><\/td>\nClassement selon l\u2019\u00e9preuve ONU C.2<\/strong><\/td>\n<\/tr>\n
Le taux de d\u00e9flagration est sup\u00e9rieur \u00e0 5,0 mm\/s.<\/td>\n\u201cOui, rapidement\u201d<\/td>\n<\/tr>\n
Le taux de d\u00e9flagration est inf\u00e9rieur ou \u00e9gal \u00e0 5,0 mm\/s et sup\u00e9rieur ou \u00e9gal \u00e0 0,35 mm\/s.<\/td>\n\u201cOui, lentement\u201d<\/td>\n<\/tr>\n
Le taux de d\u00e9flagration est inf\u00e9rieur \u00e0 0,35 mm\/s ou la r\u00e9action s\u2018arr\u00eate avant d\u2019atteindre le rep\u00e8re inf\u00e9rieur.<\/td>\n\u201cNon\u201d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n\n\n
<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\"Vase<\/a>

Manuel d\u2019\u00e9preuves et de crit\u00e8res ONU, 7\u00e8me \u00e9dition, New York et Gen\u00e8ve, 2019 : Figure 23.4.2.1 : Vase de Dewar conforme \u00e0 (\u00c9preuve ONU C.2)<\/p><\/div>\n

(A) Hauteur de remplissage \u00e0 20 mm au-dessous du bord sup\u00e9rieur
\n(B) Intervalle de 30 mm pour la d\u00e9tection d\u2019une d\u00e9flagration
\n(C) Intervalle de 350 mm pour la mesure de la vitesse de d\u00e9flagration[\/vc_column_text][vc_row_inner rt_row_style=\u00a0\u00bbglobal-style\u00a0\u00bb rt_bg_custom_alignment=\u00a0\u00bbtop\u00a0\u00bb][vc_column_inner width=\u00a0\u00bb1\/2″ 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][vc_btn title=\u00a0\u00bbClassification des substances\u00a0\u00bb style=\u00a0\u00bbclassic\u00a0\u00bb color=\u00a0\u00bbpurple\u00a0\u00bb i_icon_fontawesome=\u00a0\u00bbfas fa-angle-left\u00a0\u00bb add_icon=\u00a0\u00bbtrue\u00a0\u00bb link=\u00a0\u00bburl:%2Ffr%2Fprestations%2Fclassification-des-substances%2F|title:Classification%20des%20substances\u00a0\u00bb el_class=\u00a0\u00bbbtn–red\u00a0\u00bb][\/vc_column_inner][vc_column_inner width=\u00a0\u00bb1\/2″ 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][vc_btn title=\u00a0\u00bbPrestations\u00a0\u00bb style=\u00a0\u00bbclassic\u00a0\u00bb color=\u00a0\u00bbpurple\u00a0\u00bb i_icon_fontawesome=\u00a0\u00bbfas fa-angle-left\u00a0\u00bb add_icon=\u00a0\u00bbtrue\u00a0\u00bb link=\u00a0\u00bburl:%2Ffr%2Fprestations%2F|title:Prestations\u00a0\u00bb el_class=\u00a0\u00bbbtn–red\u00a0\u00bb][\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row]<\/p>\n","protected":false},"excerpt":{"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\u00bbtrue\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_1529335398592{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_1531993670525{padding-bottom: 2em !important;}\u00a0\u00bb][vc_column_text el_class=\u00a0\u00bbredborderleft\u00a0\u00bb] Aptitude \u00e0 la d\u00e9flagration dans des syst\u00e8mes ouverts : ONU S\u00e9rie C, …
more | mehr<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":9325,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-11529","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/consilab.de\/fr\/wp-json\/wp\/v2\/pages\/11529","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=11529"}],"version-history":[{"count":1,"href":"https:\/\/consilab.de\/fr\/wp-json\/wp\/v2\/pages\/11529\/revisions"}],"predecessor-version":[{"id":12148,"href":"https:\/\/consilab.de\/fr\/wp-json\/wp\/v2\/pages\/11529\/revisions\/12148"}],"up":[{"embeddable":true,"href":"https:\/\/consilab.de\/fr\/wp-json\/wp\/v2\/pages\/9325"}],"wp:attachment":[{"href":"https:\/\/consilab.de\/fr\/wp-json\/wp\/v2\/media?parent=11529"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}