{"id":6844,"date":"2024-04-04T15:31:17","date_gmt":"2024-04-04T15:31:17","guid":{"rendered":"https:\/\/blog.infraspeak.com\/?p=6844"},"modified":"2026-04-02T18:35:16","modified_gmt":"2026-04-02T18:35:16","slug":"analise-de-causa-raiz","status":"publish","type":"post","link":"https:\/\/blog.infraspeak.com\/pt-br\/analise-de-causa-raiz\/","title":{"rendered":"O que \u00e9 a An\u00e1lise de Causa Raiz"},"content":{"rendered":"<div id=\"bsf_rt_marker\"><\/div><h2><b>O que \u00e9 an\u00e1lise de causa raiz?<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">A express\u00e3o \u201can\u00e1lise de causa raiz\u201d (em ingl\u00eas, <\/span><i><span style=\"font-weight: 400;\">root cause analysis<\/span><\/i><span style=\"font-weight: 400;\">) \u00e9 um termo guarda-chuva para diferentes m\u00e9todos que permitem analisar falhas e resolv\u00ea-las<\/span><span style=\"font-weight: 400;\">.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Portanto, <\/span><b>n\u00e3o se trata de um m\u00e9todo em espec\u00edfico, mas sim um conjunto de ferramentas que podemos usar para analisar falhas de seguran\u00e7a, de produ\u00e7\u00e3o, de processos, equipamentos ou sistemas.\u00a0<\/b><\/p>\n<h2><b>Ferramentas de an\u00e1lise de causa raiz<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">H\u00e1 pelo menos uma dezena de ferramentas para fazer uma an\u00e1lise de causa raiz, cada uma com as suas vantagens, desvantagens e aplica\u00e7\u00f5es. N\u00e3o \u00e9 a primeira vez que falamos na import\u00e2ncia de incorporar <a href=\"https:\/\/blog.infraspeak.com\/pt-br\/ferramentas-para-analise-de-manutencao\/\">ferramentas de an\u00e1lise<\/a> na manuten\u00e7\u00e3o e, por isso, hoje queremos destacar cinco ferramentas que s\u00e3o especialmente valiosas nesta \u00e1rea, especialmente quando integradas com um <a href=\"https:\/\/infraspeak.com\/pt-br\/plataforma\/software-gestao-de-ativos\">software gest\u00e3o de ativos<\/a> adequado.<\/p>\n<p><span style=\"font-weight: 400;\">\u00c9 importante dizer que n\u00e3o \u00e9 preciso optar por apenas alguma delas. \u00c9 poss\u00edvel usar diferentes an\u00e1lises considerando a gravidade de cada dano e, ocasionalmente, usar duas ou mais an\u00e1lises de maneira complementar.\u00a0<\/span><\/p>\n<h3><b>5Ws (5 porqu\u00eas)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Voc\u00ea conhece a teoria dos seis graus de separa\u00e7\u00e3o? (Em resumo: \u00e9 preciso, no m\u00e1ximo, 6 la\u00e7os de amizade para que quaisquer duas pessoas no mundo estejam ligadas.) <a href=\"https:\/\/blog.infraspeak.com\/pt-br\/analise-5-porques\/\">A an\u00e1lise dos 5 porqu\u00eas<\/a> tem uma premissa semelhante \u2014 \u00e9 preciso perguntar \u201cpor qu\u00ea?\u201d no m\u00e1ximo 5 vezes at\u00e9 chegar \u00e0 causa raiz. Por exemplo:<\/span><\/p>\n<p style=\"text-align: center;\"><i><span style=\"font-weight: 400;\">Pe\u00e7a defeituosa <\/span><\/i><b><i>\u27f6<\/i><\/b> <b><i>Por qu\u00ea? \u27f6 <\/i><\/b><i><span style=\"font-weight: 400;\">Houve um problema na produ\u00e7\u00e3o <\/span><\/i><b><i>\u27f6<\/i><\/b> <b><i>Por qu\u00ea? \u27f6 <\/i><\/b><i><span style=\"font-weight: 400;\">A m\u00e1quina de produ\u00e7\u00e3o estragou\u00a0<\/span><\/i><b><i>\u27f6<\/i><\/b> <b><i>Por qu\u00ea? \u27f6 <\/i><\/b><i><span style=\"font-weight: 400;\">A manuten\u00e7\u00e3o preventiva falhou <\/span><\/i><b><i>\u27f6<\/i><\/b> <b><i>Por qu\u00ea? \u27f6 <\/i><\/b><i><span style=\"font-weight: 400;\">N\u00e3o foi executada este semestre <\/span><\/i><b><i>\u27f6<\/i><\/b> <b><i>Por qu\u00ea? \u27f6 <\/i><\/b><i><span style=\"font-weight: 400;\">As recomenda\u00e7\u00f5es do manual do fabricante n\u00e3o foram seguidas ao definir o plano de manuten\u00e7\u00e3o (causa raiz).<\/span><\/i><\/p>\n<p>Para implementar uma an\u00e1lise eficaz dos 5 porqu\u00eas, \u00e9 fundamental ter controle sobre todos os recursos da empresa, incluindo pe\u00e7as de reposi\u00e7\u00e3o e materiais atrav\u00e9s de um <a href=\"https:\/\/infraspeak.com\/pt-br\/solucoes\/software-gestao-estoque\">software gest\u00e3o de estoque<\/a> integrado. Isso permite identificar rapidamente se a causa raiz est\u00e1 relacionada \u00e0 falta de materiais ou problemas na cadeia de suprimentos.<\/p>\n<p><span style=\"font-weight: 400;\">Esta ferramenta pode ser usada para resolver falhas simples, de risco baixo a moderado. No entanto, talvez n\u00e3o seja a melhor op\u00e7\u00e3o para problemas cr\u00edticos ou mais complexos, que exigem uma compreens\u00e3o mais profunda das causas e efeitos. Para falhas e danos mais graves, continue a leitura.\u00a0<\/span><\/p>\n<p><a href=\"https:\/\/2767973.fs1.hubspotusercontent-na1.net\/hubfs\/2767973\/Files%20to%20Download\/BR\/%5BBR%5D%20An%C3%A1lise%20de%20Causa%20Raiz_%20Guia%20Completo.pdf\"><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone wp-image-8863 size-full\" src=\"https:\/\/blog.infraspeak.com\/wp-content\/uploads\/2020\/10\/CTA-Banners-min.png\" alt=\"Guia completo de an\u00e1lise de causa raiz\" width=\"1200\" height=\"628\" srcset=\"https:\/\/blog.infraspeak.com\/wp-content\/uploads\/2020\/10\/CTA-Banners-min.png 1200w, https:\/\/blog.infraspeak.com\/wp-content\/uploads\/2020\/10\/CTA-Banners-min-300x157.png 300w, https:\/\/blog.infraspeak.com\/wp-content\/uploads\/2020\/10\/CTA-Banners-min-768x402.png 768w, https:\/\/blog.infraspeak.com\/wp-content\/uploads\/2020\/10\/CTA-Banners-min-1024x536.png 1024w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/a><\/p>\n<h3><b>\u00c1rvore de Falhas\u00a0<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">A an\u00e1lise da \u00e1rvore de falhas (tamb\u00e9m conhecida pela sigla FTA, que vem do nome em ingl\u00eas <\/span><i><span style=\"font-weight: 400;\">fault-tree analysis<\/span><\/i><span style=\"font-weight: 400;\">) \u00e9 um m\u00e9todo l\u00f3gico-dedutivo para descobrir a origem do erro. De forma simples, uma falha \u00e9 identificada, os <\/span><span style=\"font-weight: 400;\">modos de falha<\/span><span style=\"font-weight: 400;\"> s\u00e3o descritos e, posteriormente, s\u00e3o validados ou descartados com base na informa\u00e7\u00e3o recolhida, at\u00e9 encontrar a causa raiz. No fundo, \u00e9 semelhante com um diagn\u00f3stico.\u00a0<\/span><\/p>\n<p><img decoding=\"async\" class=\"alignnone size-full wp-image-6592\" src=\"https:\/\/blog.infraspeak.com\/wp-content\/uploads\/2020\/08\/Fault_tree.svg_.png\" alt=\"\u00c1rvore de falhas\" width=\"800\" height=\"846\" srcset=\"https:\/\/blog.infraspeak.com\/wp-content\/uploads\/2020\/08\/Fault_tree.svg_.png 800w, https:\/\/blog.infraspeak.com\/wp-content\/uploads\/2020\/08\/Fault_tree.svg_-284x300.png 284w, https:\/\/blog.infraspeak.com\/wp-content\/uploads\/2020\/08\/Fault_tree.svg_-768x812.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Al\u00e9m desta vertente de diagn\u00f3stico, a an\u00e1lise de modos de falha tamb\u00e9m \u00e9 usada para desenvolver requisitos de confiabilidade e normas de seguran\u00e7a. Por isso, \u00e9 muito popular na ind\u00fastria qu\u00edmica, farmac\u00eautica, aeron\u00e1utica, petroqu\u00edmica, nuclear e em outras atividades de alto risco. Contudo, tamb\u00e9m pode ter aplicabilidades mais\u2026 corriqueiras, como descobrir a origem de um bug em um <a href=\"https:\/\/infraspeak.com\/pt-br\/solucoes\/software-cmms\">software CMMS<\/a> e elimin\u00e1-lo!<\/p>\n<p>A an\u00e1lise de causa raiz \u00e9 especialmente importante em opera\u00e7\u00f5es de campo, onde falhas podem ter impactos significativos na seguran\u00e7a e produtividade. Um <a href=\"https:\/\/infraspeak.com\/pt-br\/solucoes\/software-field-service-management\">software field service management<\/a> pode ajudar a coletar dados essenciais para identificar problemas recorrentes e implementar solu\u00e7\u00f5es preventivas.<\/p>\n<h4><a href=\"https:\/\/blog.infraspeak.com\/pt-br\/analise-arvore-de-falhas\/\">Saiba mais sobre an\u00e1lise de \u00e1rvore de falhas neste artigo<\/a>.<\/h4>\n<p><span style=\"font-weight: 400;\">A grande desvantagem deste tipo de an\u00e1lise \u00e9 que cada um dos modos de falha ou \u00e9 validado, ou descartado (atribuindo um valor corresponde a 1 ou a 0), o que descarta falhas parciais. Dessa forma, \u00e9 uma ferramenta de an\u00e1lise apropriada para processos mec\u00e2nicos e controlados, mas n\u00e3o para setores menos lineares, como recursos humanos, marketing ou publicidade.\u00a0<\/span><\/p>\n<h3><b>Diagrama de Ishikawa\u00a0<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">O diagrama de Ishikawa (mais conhecido como<\/span><span style=\"font-weight: 400;\">\u00a0\u201c<em>fishbone<\/em>\u201d ou \u201cdiagrama espinha de peixe\u201d, precisamente por se assemelhar \u00e0 espinha de um peixe) consiste em organizar as causas e efeitos num diagrama, divididos em seis categorias, at\u00e9 tirar conclus\u00f5es. As categorias, ou 6 Ms, s\u00e3o as seguintes: materiais, m\u00e9todos, m\u00e3o de obra, mat\u00e9ria-prima, meio ambiente e medidas.\u00a0<\/span><\/p>\n<p><a href=\"https:\/\/en.wikipedia.org\/wiki\/Ishikawa_diagram#\/media\/File:Cause_and_effect_diagram_for_defect_XXX.svg\"><img decoding=\"async\" class=\"alignnone size-full wp-image-6584\" src=\"https:\/\/blog.infraspeak.com\/wp-content\/uploads\/2020\/08\/1200px-Cause_and_effect_diagram_for_defect_XXX.svg_.png\" alt=\"Diagrama de ishikawa | fish bone diagram\" width=\"1200\" height=\"1016\" srcset=\"https:\/\/blog.infraspeak.com\/wp-content\/uploads\/2020\/08\/1200px-Cause_and_effect_diagram_for_defect_XXX.svg_.png 1200w, https:\/\/blog.infraspeak.com\/wp-content\/uploads\/2020\/08\/1200px-Cause_and_effect_diagram_for_defect_XXX.svg_-300x254.png 300w, https:\/\/blog.infraspeak.com\/wp-content\/uploads\/2020\/08\/1200px-Cause_and_effect_diagram_for_defect_XXX.svg_-768x650.png 768w, https:\/\/blog.infraspeak.com\/wp-content\/uploads\/2020\/08\/1200px-Cause_and_effect_diagram_for_defect_XXX.svg_-1024x867.png 1024w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/a><\/p>\n<p><span style=\"font-weight: 400;\">\u00c9 uma ferramenta de an\u00e1lise de causa raiz que esquematiza a rela\u00e7\u00e3o entre diferentes setores da empresa, por isso \u00e9<strong> \u00fatil para resolver falhas que n\u00e3o t\u00eam uma \u00fanica origem<\/strong>. Por exemplo, se uma f\u00e1brica produz um lote com defeito \u2013 depois de j\u00e1 ter produzido milhares de lotes em \u00f3timo estado \u2013 o que aconteceu? Houve um problema com a mat\u00e9ria-prima? Erro humano na fase de produ\u00e7\u00e3o? O que aconteceu durante os testes de qualidade? Pode ser o caso de mais do que uma causa raiz?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">O diagrama de Ishikawa tem aplica\u00e7\u00f5es tanto em manuten\u00e7\u00e3o como em marketing e em gest\u00e3o, o que o torna extremamente vers\u00e1til para melhorar processos internos, promover o esp\u00edrito de equipe e descobrir n\u00e3o conformidades. Por outro lado, pode \u201cdispersar\u201d demais o pensamento ou complicar o processo de an\u00e1lise de causa raiz de forma desnecess\u00e1ria.\u00a0<\/span><\/p>\n<p>Em ambientes corporativos complexos, onde m\u00faltiplos fatores podem contribuir para uma falha, um <a href=\"https:\/\/infraspeak.com\/pt-br\/solucoes\/software-cafm\">software CAFM<\/a> pode fornecer os dados necess\u00e1rios para uma an\u00e1lise de causa raiz mais precisa e abrangente, integrando informa\u00e7\u00f5es de diferentes setores da empresa.<\/p>\n<h3><b>FMEA\u00a0<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">A an\u00e1lise FMEA (Failure Modes and Effects Analysis) \u00e9 uma das ferramentas mais complexas para fazer a an\u00e1lise da causa raiz, mas tamb\u00e9m uma das mais apropriadas para gest\u00e3o de manuten\u00e7\u00e3o e facility management, especialmente quando suportada por um <a href=\"https:\/\/infraspeak.com\/pt-br\/solucoes\/software-gestao-facilities\">software gest\u00e3o de facilities<\/a>. Esta \u00e9 uma an\u00e1lise que responde \u00e0 pergunta &#8220;e se\u2026&#8221;, isto \u00e9, (1) qual \u00e9 a probabilidade de ocorrer uma determinada falha e (2) se acontecer, quais efeitos tem?<\/p>\n<p><span style=\"font-weight: 400;\">A an\u00e1lise FMEA anda de m\u00e3os dadas com a an\u00e1lise de <a href=\"https:\/\/blog.infraspeak.com\/pt-br\/o-que-e-a-gestao-de-ativos\/\">criticidade dos ativos<\/a> (nesse caso, FMECA). Apesar disso, tamb\u00e9m pode ser usada em conjunto com outras ferramentas desta lista, como a \u00e1rvore de falhas. \u00c9 uma ferramenta de an\u00e1lise de causa raiz apropriada para avaliar o impacto das falhas, tra\u00e7ar planos de conting\u00eancia, estabelecer rela\u00e7\u00f5es de causa-efeito e planejar a\u00e7\u00f5es de melhoria ou manuten\u00e7\u00e3o corretiva programada.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Por\u00e9m, como descrever todos os modos de falha exige tempo e esfor\u00e7o, \u00e9 mais comum em ativos de muita criticidade, manuten\u00e7\u00e3o industrial e setores com alto risco de seguran\u00e7a. Devido \u00e0 sua import\u00e2ncia em manuten\u00e7\u00e3o, veja aqui <a href=\"https:\/\/blog.infraspeak.com\/pt-br\/analise-fmea\/\">como fazer uma an\u00e1lise FMEA.<\/a><\/span><\/p>\n<p>A an\u00e1lise de causa raiz tamb\u00e9m \u00e9 fundamental para manter a conformidade regulat\u00f3ria, especialmente em setores de alto risco. Um <a href=\"https:\/\/infraspeak.com\/pt-br\/plataforma\/conformidade\">software de compliance<\/a> pode documentar e rastrear todas as n\u00e3o conformidades identificadas durante a an\u00e1lise FMEA, garantindo que as a\u00e7\u00f5es corretivas sejam implementadas adequadamente.<\/p>\n<p>Quer saber como este m\u00e9todo se compara com a an\u00e1lise de \u00e1rvore de falhas? <a href=\"https:\/\/blog.infraspeak.com\/pt-br\/fta-fmea-diferencas\/\">Leia o nosso artigo sobre as diferen\u00e7as entre FTA e FMEA<\/a>.<\/p>\n<h3><b>An\u00e1lise de dados<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Por \u00faltimo \u2013 mas n\u00e3o menos importante ou eficaz \u2013 temos a an\u00e1lise de dados. Como o nome sugere, consiste em recolher, modelar e transformar informa\u00e7\u00e3o para obter <\/span><i><span style=\"font-weight: 400;\">insights<\/span><\/i><span style=\"font-weight: 400;\"> valiosos sobre o que est\u00e1 acontecendo de errado. Esta tarefa fica mais f\u00e1cil se voc\u00ea estiver usando <\/span><span style=\"font-weight: 400;\">uma <a href=\"http:\/\/infraspeak.com\">plataforma inteligente de gest\u00e3o de manuten\u00e7\u00e3o<\/a>\u00a0para centralizar\u00a0 e gerir\u00a0<\/span><span style=\"font-weight: 400;\">todos os dados sobre os seus ativos, o seu plano de manuten\u00e7\u00e3o e a sua execu\u00e7\u00e3o.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Inserir os dados no <em>software<\/em> permite calcular imediatamente a taxa de cumprimento, a percentagem de manuten\u00e7\u00e3o n\u00e3o planejada e a percentagem cr\u00edtica de manuten\u00e7\u00e3o agendada, <a href=\"https:\/\/blog.infraspeak.com\/pt-br\/indicadores-de-manutencao\/\">entre outros KPIs<\/a>. Mas tamb\u00e9m te d\u00e1 uma perspectiva global sobre o hist\u00f3rico de cada ativo e, em caso de dano, pode ser a chave para determinar o momento \u201cH\u201d em que a manuten\u00e7\u00e3o falhou.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">De certa forma, todos os outros m\u00e9todos <\/span><span style=\"font-weight: 400;\">dependem<\/span><span style=\"font-weight: 400;\"> da an\u00e1lise de dados. Portanto, pode (e deve) ser usada em conjunto com qualquer uma das ferramentas de an\u00e1lise de causa raiz que mencionamos ao longo do artigo.\u00a0<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Conhe\u00e7a v\u00e1rias ferramentas de an\u00e1lise de causa raiz e saiba como us\u00e1-las para analisar falhas e prevenir a ocorr\u00eancia das mesmas no futuro.<\/p>\n","protected":false},"author":54,"featured_media":6590,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"content-type":"","footnotes":"","_wp_rev_ctl_limit":""},"categories":[368,366],"tags":[],"class_list":["post-6844","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-gestao-de-facilities","category-manutencao"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>O que \u00e9 a An\u00e1lise de Causa Raiz &#8226; Infraspeak 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