{"id":46611,"date":"2023-01-04T16:36:56","date_gmt":"2023-01-04T15:36:56","guid":{"rendered":"https:\/\/www.gt-engineering.it\/?post_type=normativa_tecnica&p=46611"},"modified":"2025-07-18T11:13:27","modified_gmt":"2025-07-18T10:13:27","slug":"8-approche-perpendiculaire-a-une-zone-de-detection","status":"publish","type":"normativa_tecnica","link":"https:\/\/www.gt-engineering.it\/fr\/reglements-techniques\/normes-en-iso\/en-iso-13855-positionnement-des-protections\/8-approche-perpendiculaire-a-une-zone-de-detection\/","title":{"rendered":"8 – Approche perpendiculaire \u00e0 une zone de d\u00e9tection"},"content":{"rendered":"\n\n \n \n \n
\n\n \n \n \n
\n \n
\n

La norme fait r\u00e9f\u00e9rence \u00e0 deux situations diff\u00e9rentes concernant la zone de d\u00e9tection orthogonale \u00e0 la zone d’approche :<\/p>\n

 <\/p>\n

    \n
  • Reaching into\u00a0: signifie p\u00e9n\u00e9trer avec une partie du corps dans un espace prot\u00e9g\u00e9 en direction d’une zone dangereuse<\/li>\n
  • Reaching out\u00a0: signifie sortir d’un espace prot\u00e9g\u00e9 en direction d’un SRMCD<\/li>\n<\/ul>\n<\/div> <\/div>\n \n \n
    <\/div>\n \n\n <\/div>\n <\/section>\n\n \n\n\n\n\n \n \n \n
    \n\n \n
    \n \n
    \n \n \n

    \n Atteinte par-dessus <\/h2>\n <\/div>\n <\/div>\n \n \n \r\n\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n <\/picture>\r\n\r\n \r\n\r\n \r\n \r\n <\/div>\n \n
    \n \n
    \n

    Dans le premier cas, une distance suppl\u00e9mentaire DDO<\/sub> <\/strong>est n\u00e9cessaire pour pr\u00e9venir tout acc\u00e8s non d\u00e9tect\u00e9, et l’\u00e9quation pour calculer la distance de s\u00e9paration minimale entre la barri\u00e8re et la zone dangereuse devient :<\/p>\n

    S = (K \u00d7 T) + DDO<\/sub> + Z<\/strong><\/p>\n

    \u00a0<\/strong><\/p>\n

    La valeur de DDO<\/sub><\/strong> peut \u00eatre obtenue \u00e0 partir du Tableau 2<\/strong>, lorsque la hauteur de la protection \u00e9lectrosensible est d\u00e9j\u00e0 fix\u00e9e et que la hauteur du danger par rapport au plan de r\u00e9f\u00e9rence est connue.<\/p>\n<\/div> <\/div>\n \n \n

    <\/div>\n \n\n <\/div>\n <\/section>\n\n \n\n\n\n\n \n \n \n\n\n\n\n \n \n \n
    \n\n \n \n \n \r\n\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n <\/picture>\r\n\r\n \r\n\r\n \r\n \r\n <\/div>\n \n
    \n \n
    \n

    Dans le second cas, il peut \u00eatre possible de prendre appui sur la structure de protection pour franchir la zone de d\u00e9tection. La distance de s\u00e9paration S<\/em> ne doit pas \u00eatre inf\u00e9rieure \u00e0 la distance d’atteinte d’une structure de protection DGO<\/sub><\/strong> d\u00e9termin\u00e9e conform\u00e9ment \u00e0 la norme ISO 13857:2019<\/strong>, 4.2.2, Table 2.<\/p>\n

    \u00a0<\/strong><\/p>\n<\/div> <\/div>\n \n \n

    <\/div>\n \n\n <\/div>\n <\/section>\n\n \n\n\n\n\n \n \n \n
    \n\n \n
    \n \n
    \n \n \n

    \n Travers\u00e9e d’une zone <\/h2>\n <\/div>\n <\/div>\n \n \n \r\n\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n <\/picture>\r\n\r\n \r\n\r\n \r\n \r\n <\/div>\n \n
    \n \n
    \n

    La distance de s\u00e9paration S<\/em>, en millim\u00e8tres, entre la zone de d\u00e9tection et la zone dangereuse est calcul\u00e9e \u00e0 l’aide de l’\u00e9quation suivante\u00a0:<\/p>\n

    S <\/em>= (K <\/em>\u00d7 T<\/em>) + D<\/em>DT<\/sub> + Z<\/em><\/strong><\/p>\n<\/div> <\/div>\n \n \n

    <\/div>\n \n\n <\/div>\n <\/section>\n\n \n\n\n\n\n \n \n \n
    \n\n \n \n \n
    \n \n
    \n
    \n

    Capacit\u00e9 de d\u00e9tection effective d<\/em>e<\/sub> \u2264 40 mm<\/strong><\/p>\n<\/div>\n

      \n
    • K=2000 [mm\/s] \u00a0 \u00a0&\u00a0 \u00a0 DDT<\/sub>=8\u2219(de<\/sub>-14)<\/li>\n<\/ul>\n
      Si le calcul donne S > 500 [mm], alors :<\/div>\n
        \n
      • K=1600 [mm\/s] \u00a0 \u00a0&\u00a0 \u00a0 DDT<\/sub>=8\u2219(de<\/sub>-14)<\/li>\n<\/ul>\n
        Et la distance de s\u00e9paration doit \u00eatre d’au moins S \u2265 100 [mm].<\/div>\n<\/div> <\/div>\n \n \n
        <\/div>\n \n\n <\/div>\n <\/section>\n\n \n\n\n\n\n \n \n \n
        \n\n \n \n \n
        \n \n
        \n
        Capacit\u00e9 de d\u00e9tection effective de<\/sub> 40 mm < de<\/sub> \u2264 55 mm<\/strong><\/em><\/div>\n
          \n
        • K=2000 [mm\/s] \u00a0 \u00a0&\u00a0 \u00a0 DDT<\/sub>=208+12\u2219(de<\/sub>-40)<\/li>\n<\/ul>\n
          Si le calcul donne S > 500 [mm], alors:<\/div>\n
            \n
          • K=1600 [mm\/s] \u00a0 \u00a0&\u00a0 \u00a0 DDT<\/sub>=208+12\u2219(de<\/sub>-40)<\/li>\n<\/ul>\n
            Et la distance de s\u00e9paration doit \u00eatre au moins S \u2265 500 [mm].<\/div>\n<\/div> <\/div>\n \n \n
            <\/div>\n \n\n <\/div>\n <\/section>\n\n \n\n\n\n\n \n \n \n
            \n\n \n \n \n \n \n
            <\/div>\n \n\n <\/div>\n <\/section>\n\n \n\n\n\n\n \n \n \n
            \n\n \n \n \n
            \n \n
            \n
            Capacit\u00e9 de d\u00e9tection effective de 55 mm < de<\/sub> \u2264 120 mm<\/strong><\/em><\/div>\n
              \n
            • K=1600 [mm\/s] \u00a0 \u00a0&\u00a0 \u00a0 DDT<\/sub>=850 [mm]<\/li>\n<\/ul>\n<\/div> <\/div>\n \n \n
              <\/div>\n \n\n <\/div>\n <\/section>\n\n \n\n\n\n\n \n \n \n
              \n\n \n
              \n \n
              \n \n \n

              \n Atteinte sous une zone <\/h2>\n <\/div>\n <\/div>\n \n \n \r\n\r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n \r\n <\/picture>\r\n\r\n \r\n\r\n \r\n \r\n <\/div>\n \n
              \n \n
              \n

              Les valeurs suivantes sont consid\u00e9r\u00e9es pour permettre d’\u00e9viter l’acc\u00e8s non d\u00e9tect\u00e9 \u00e0 des zones dangereuses, par inadvertance, lorsque l’on passe sous une zone de d\u00e9tection avec une approche perpendiculaire. Ces valeurs ne peuvent pas toujours emp\u00eacher un acc\u00e8s non d\u00e9tect\u00e9 intentionnel.<\/p>\n

              La hauteur maximale du bord inf\u00e9rieur de la zone de d\u00e9tection \u00e0 partir du plan de r\u00e9f\u00e9rence H<\/em>DB<\/sub> ne doit pas d\u00e9passer 300 [mm], HDB<\/sub> \u2264 300 [mm]<\/strong>. Au final, la distance de s\u00e9paration S entre la zone de d\u00e9tection et la zone dangereuse doit \u00eatre calcul\u00e9e selon l’\u00e9quation suivante\u00a0:<\/p>\n

              S <\/em>= (K <\/em>\u00d7 T<\/em>) + D<\/em>DU<\/sub> + Z\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/em><\/strong><\/p>\n

              O\u00f9 :
              \nK=1600 [mm\/s]
              \nDDU<\/sub>=8\u2219(de<\/sub>+HDB<\/sub>-14) + Z<\/em>\u00a0 et jamais < 0 [mm]<\/p>\n<\/div> <\/div>\n \n \n

              <\/div>\n \n\n <\/div>\n <\/section>\n\n \n","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":48602,"parent":38012,"menu_order":2,"template":"","meta":{"_acf_changed":false,"footnotes":""},"normative-tecniche":[164],"class_list":["post-46611","normativa_tecnica","type-normativa_tecnica","status-publish","has-post-thumbnail","hentry","tipologia_normativa-normes-en-iso"],"acf":{"sottotitolo":"","allegati":null},"yoast_head":"\n8 - Approche perpendiculaire \u00e0 une zone de d\u00e9tection - Gt-Engineering<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.gt-engineering.it\/fr\/reglements-techniques\/normes-en-iso\/en-iso-13855-positionnement-des-protections\/8-approche-perpendiculaire-a-une-zone-de-detection\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"8 - 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