{"id":2380,"date":"2022-04-27T19:13:43","date_gmt":"2022-04-27T17:13:43","guid":{"rendered":"https:\/\/www.wipsim.fr\/mrp-et-conwip-qui-gere-quoi\/"},"modified":"2023-04-12T09:09:32","modified_gmt":"2023-04-12T07:09:32","slug":"mrp-et-conwip-qui-gere-quoi","status":"publish","type":"post","link":"https:\/\/www.wipsim.fr\/en\/mrp-et-conwip-qui-gere-quoi\/","title":{"rendered":"MRP et CONWIP : qui g\u00e8re quoi ?"},"content":{"rendered":"<div  class='flex_column av-823p2j-43e193d171a937e68cfe7638bd9d8fc9 av_one_full  avia-builder-el-0  el_before_av_hr  avia-builder-el-first  first flex_column_div  '     ><section  class='av_textblock_section av-len4pscc-ead9137faab037ba8cd27681a0328757 '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><h1>MRP et CONWIP : qui g\u00e8re quoi ?<\/h1>\n<div id=\"u11491-4\" class=\"clearfix grpelem shared_content\" data-muse-uid=\"U11491\" data-muse-type=\"txt_frame\" data-ibe-flags=\"txtStyleSrc\" data-sizepolicy=\"fixed\" data-pintopage=\"page_fixedCenter\" data-leftadjustmentdoneby=\"pu11489\" data-content-guid=\"u11491-4_content\"><\/div>\n<div id=\"u11490-29\" class=\"clearfix grpelem\" data-muse-uid=\"U11490\" data-muse-type=\"txt_frame\" data-ibe-flags=\"txtStyleSrc\" data-sizepolicy=\"fixed\" data-pintopage=\"page_fixedCenter\" data-leftadjustmentdoneby=\"pu11489\">\n<p>Je voudrais montrer ici ce qui se passe quand on pilote en mode mixte avec MRP et CONWIP, et comment les deux outils se compl\u00e8tent en prenant chacun leur part dans la gestion des pi\u00e8ces.<\/p>\n<p>En fait, quand on associe MRP et CONWIP, chacun des deux outils r\u00e9cup\u00e8re un r\u00f4le bien pr\u00e9cis en planification et en gestion d\u2019atelier.<\/p>\n<h2>La gestion des stocks pour MRP<\/h2>\n<p>Dans MRP, une pi\u00e8ce fabriqu\u00e9e et stock\u00e9e est identifi\u00e9e dans la nomenclature sous la forme d\u2019un code article. Quand on configure MRP, on entre des param\u00e8tres de gestion (stock mini, stock maxi, stock de s\u00e9curit\u00e9, taille de lot, \u2026) pour les diff\u00e9rents articles. Ces param\u00e8tres s\u2019appliquent au moment du calcul des besoins quand il g\u00e9n\u00e8re des propositions de fabrication.<\/p>\n<p>En ajustant ces param\u00e8tres, on g\u00e8re avec l\u2019outil MRP les stocks de nos articles en magasin, que ce soient des produits finis, des sous-ensembles ou des articles interm\u00e9diaires fabriqu\u00e9s.<\/p>\n<h2>La gestion des en-cours pour CONWIP<\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignright size-full wp-image-1103\" src=\"https:\/\/www.wipsim.fr\/wp-content\/uploads\/2023\/02\/mrp-gammes.jpg\" alt=\"\" width=\"140\" height=\"284\" \/>Entre deux niveaux de la nomenclature, une gamme d\u00e9crit la suite de nos op\u00e9rations pour passer d\u2019un article composant \u00e0 un compos\u00e9.<\/p>\n<p>Un lot de pi\u00e8ces qui se trouve entre deux niveaux de nomenclature, \u00e0 une \u00e9tape plus ou moins avanc\u00e9e de la gamme, est consid\u00e9r\u00e9 sur le plan comptable comme de l\u2019en-cours et non du stock.<\/p>\n<p>Dans le syst\u00e8me mixte, c\u2019est le CONWIP qui pilote cet en-cours en assurant que sa quantit\u00e9 reste limit\u00e9e et constante, et qui d\u00e9tecte les postes o\u00f9 l\u2019en-cours local devient trop \u00e9lev\u00e9.<\/p>\n<h2>Pour les deux : la gestion des Ordres de Fabrication<\/h2>\n<p>MRP va calculer quelle r\u00e9f\u00e9rence doit \u00eatre fabriqu\u00e9e, et en quelle quantit\u00e9 en fonction des besoins clients et des param\u00e8tres de gestion (stock de s\u00e9curit\u00e9, taille de lot, \u2026). Des OF vont \u00eatre propos\u00e9s par MRP pour fabriquer les compos\u00e9s. Mais c\u2019est le CONWIP qui permettra d\u2019engager effectivement les OF sur la ligne, \u00e0 la condition qu\u2019un ticket soit disponible.<\/p>\n<p>On est dans un mode mixte o\u00f9 MRP pousse les propositions d\u2019ordres de fabrication \u00e0 partir d\u2019un calcul des besoins et CONWIP tire le lancement de ces OF sur la ligne au rythme de ce qui en sort.<\/p>\n<\/div>\n<\/div><\/section><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-len4soo9-21ade3872ee18c29e2d5e47682665279\">\n#top .hr.hr-invisible.av-len4soo9-21ade3872ee18c29e2d5e47682665279{\nheight:30px;\n}\n<\/style>\n<div  class='hr av-len4soo9-21ade3872ee18c29e2d5e47682665279 hr-invisible  avia-builder-el-2  el_after_av_textblock  el_before_av_image '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-len4rtka-488c080fa70ca161883b282dde158e65\">\n.avia-image-container.av-len4rtka-488c080fa70ca161883b282dde158e65 img.avia_image{\nbox-shadow:none;\n}\n.avia-image-container.av-len4rtka-488c080fa70ca161883b282dde158e65 .av-image-caption-overlay-center{\ncolor:#ffffff;\n}\n<\/style>\n<div  class='avia-image-container av-len4rtka-488c080fa70ca161883b282dde158e65 av-styling- avia_animated_image av-animated-when-visible-95 pop-up avia-align-center  avia-builder-el-3  el_after_av_hr  el_before_av_hr '   itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\" ><div class=\"avia-image-container-inner\"><div class=\"avia-image-overlay-wrap\"><img decoding=\"async\" fetchpriority=\"high\" class='wp-image-2068 avia-img-lazy-loading-not-2068 avia_image ' src=\"https:\/\/www.wipsim.fr\/wp-content\/uploads\/2023\/02\/mrp-conwip.jpg\" alt='' title=''  height=\"607\" width=\"813\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/www.wipsim.fr\/wp-content\/uploads\/2023\/02\/mrp-conwip.jpg 813w, https:\/\/www.wipsim.fr\/wp-content\/uploads\/2023\/02\/mrp-conwip-300x224.jpg 300w, https:\/\/www.wipsim.fr\/wp-content\/uploads\/2023\/02\/mrp-conwip-768x573.jpg 768w, https:\/\/www.wipsim.fr\/wp-content\/uploads\/2023\/02\/mrp-conwip-705x526.jpg 705w\" sizes=\"(max-width: 813px) 100vw, 813px\" \/><\/div><\/div><\/div><br \/>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-1ycdyz-913555ba5a3eba6e9498787f8fb4a97c\">\n#top .hr.hr-invisible.av-1ycdyz-913555ba5a3eba6e9498787f8fb4a97c{\nheight:30px;\n}\n<\/style>\n<div  class='hr av-1ycdyz-913555ba5a3eba6e9498787f8fb4a97c hr-invisible  avia-builder-el-4  el_after_av_image  el_before_av_textblock '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><br \/>\n<section  class='av_textblock_section av-len4qnzj-42cfc4c87512c731121acc08c211645c '   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><p>Finalement, MRP va g\u00e9rer les stocks ainsi que le choix des r\u00e9f\u00e9rences \u00e0 fabriquer gr\u00e2ce au calcul des besoins, tandis que CONWIP va g\u00e9rer les en-cours entre deux niveaux de nomenclature gr\u00e2ce aux \u00e9tiquettes et au pilotage visuel.<\/p>\n<p>On voit que dans ce mode mixte on dispose de deux leviers diff\u00e9rents selon que l\u2019on veut diminuer les stocks ou bien les en-cours. Pour les stocks, il faut ajuster les param\u00e8tres de MRP. Pour les en-cours il faut agir sur le nombre de tickets CONWIP. Il y a \u00e9galement un r\u00e9glage qui joue sur les deux tableaux : c\u2019est la taille des lots. En r\u00e9duisant la taille des lots fabriqu\u00e9s, on diminue l\u2019en-cours mais aussi le stock car les quantit\u00e9s entr\u00e9es en une fois dans le magasin sont plus petites. On gagne ainsi en d\u00e9lai de fabrication et en Besoin en Fond de Roulement sur la totalit\u00e9 du flux logistique interne.<\/p>\n<\/div><\/section><br \/>\n<div  class='av-post-metadata-container av-av_post_metadata-8a1e63b4024047dba83e3cb00d3d00a9 av-metadata-container-align-left  avia-builder-el-6  el_after_av_textblock  avia-builder-el-last  av-metadata-container-1'><div class='av-post-metadata-container-inner'><span class=\"av-post-metadata-content av-post-metadata-meta-content\"><span class=\"av-post-metadata-content av-post-metadata-author\"  itemprop=\"author\" ><span class=\"av-metadata-before av-metadata-before-author\">Publi\u00e9 par<\/span><span class=\"av-post-metadata-author-link\" ><a href=\"https:\/\/www.wipsim.fr\/en\/author\/patrick\/\"  rel=\"author\">patrick<\/a><\/span><\/span><span class=\"av-post-metadata-content av-post-metadata-separator\">|<\/span><span class=\"av-post-metadata-content av-post-metadata-modified\"><span class=\"av-post-metadata-modified-date\" >12 April 2023<\/span><\/span><span class=\"av-post-metadata-content av-post-metadata-separator\">|<\/span><span class=\"av-post-metadata-content av-post-metadata-category\"><span class=\"av-metadata-before av-metadata-before-categories\">Dans<\/span><span class=\"av-post-metadata-category-link\" ><a href=\"https:\/\/www.wipsim.fr\/en\/category\/operational-expertise\/\" >Operational expertise<\/a><\/span><\/span><\/span><\/div><\/div><\/p><\/div>\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-5abnsr-7931194ef8216669be4893c339fa771b\">\n#top .hr.hr-invisible.av-5abnsr-7931194ef8216669be4893c339fa771b{\nheight:30px;\n}\n<\/style>\n<div  class='hr av-5abnsr-7931194ef8216669be4893c339fa771b hr-invisible  avia-builder-el-7  el_after_av_one_full  el_before_av_social_share '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div><\/p>\n<div  class='av-social-sharing-box av-4u710r-6a160c27a0e8e73e5fd5e35b6b1cba96 av-social-sharing-box-minimal  avia-builder-el-8  el_after_av_hr  el_before_av_hr  av-social-sharing-box-fullwidth'><div class=\"av-share-box\"><h5 class='av-share-link-description av-no-toc '>Partager cet article<\/h5><ul class=\"av-share-box-list noLightbox\"><li class='av-share-link av-social-link-facebook avia_social_iconfont' ><a target=\"_blank\" aria-label=\"Share on Facebook\" href='https:\/\/www.facebook.com\/sharer.php?u=https:\/\/www.wipsim.fr\/en\/mrp-et-conwip-qui-gere-quoi\/&#038;t=MRP%20et%20CONWIP%20%3A%20qui%20g%C3%A8re%20quoi%20%3F' data-av_icon='\ue8f3' data-av_iconfont='entypo-fontello'  title='' data-avia-related-tooltip='Share on Facebook'><span class='avia_hidden_link_text'>Share on Facebook<\/span><\/a><\/li><li class='av-share-link av-social-link-twitter avia_social_iconfont' ><a target=\"_blank\" aria-label=\"Share on X\" 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href='https:\/\/linkedin.com\/shareArticle?mini=true&#038;title=MRP%20et%20CONWIP%20%3A%20qui%20g%C3%A8re%20quoi%20%3F&#038;url=https:\/\/www.wipsim.fr\/en\/mrp-et-conwip-qui-gere-quoi\/' data-av_icon='\ue8fc' data-av_iconfont='entypo-fontello'  title='' data-avia-related-tooltip='Share on LinkedIn'><span class='avia_hidden_link_text'>Share on LinkedIn<\/span><\/a><\/li><li class='av-share-link av-social-link-mail avia_social_iconfont' ><a  aria-label=\"Share by Mail\" href='mailto:?subject=MRP%20et%20CONWIP%20%3A%20qui%20g%C3%A8re%20quoi%20%3F&#038;body=https:\/\/www.wipsim.fr\/en\/mrp-et-conwip-qui-gere-quoi\/' data-av_icon='\ue805' data-av_iconfont='entypo-fontello'  title='' data-avia-related-tooltip='Share by Mail'><span class='avia_hidden_link_text'>Share by Mail<\/span><\/a><\/li><\/ul><\/div><\/div>\n\n<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-2oflp7-318f3a04a92ed2194552b8a53acd48be\">\n#top .hr.hr-invisible.av-2oflp7-318f3a04a92ed2194552b8a53acd48be{\nheight:100px;\n}\n<\/style>\n<div  class='hr av-2oflp7-318f3a04a92ed2194552b8a53acd48be hr-invisible  avia-builder-el-9  el_after_av_social_share  avia-builder-el-last '><span class='hr-inner '><span class=\"hr-inner-style\"><\/span><\/span><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Je voudrais montrer ici ce qui se passe quand on pilote en mode mixte avec MRP et CONWIP, et comment les deux outils se compl\u00e8tent en prenant chacun leur part dans la gestion des pi\u00e8ces.<\/p>\n","protected":false},"author":1,"featured_media":2070,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-2380","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-operational-expertise"],"_links":{"self":[{"href":"https:\/\/www.wipsim.fr\/en\/wp-json\/wp\/v2\/posts\/2380","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wipsim.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wipsim.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wipsim.fr\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wipsim.fr\/en\/wp-json\/wp\/v2\/comments?post=2380"}],"version-history":[{"count":2,"href":"https:\/\/www.wipsim.fr\/en\/wp-json\/wp\/v2\/posts\/2380\/revisions"}],"predecessor-version":[{"id":2566,"href":"https:\/\/www.wipsim.fr\/en\/wp-json\/wp\/v2\/posts\/2380\/revisions\/2566"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.wipsim.fr\/en\/wp-json\/wp\/v2\/media\/2070"}],"wp:attachment":[{"href":"https:\/\/www.wipsim.fr\/en\/wp-json\/wp\/v2\/media?parent=2380"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wipsim.fr\/en\/wp-json\/wp\/v2\/categories?post=2380"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wipsim.fr\/en\/wp-json\/wp\/v2\/tags?post=2380"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}