{"id":1668,"date":"2023-02-21T10:06:49","date_gmt":"2023-02-21T09:06:49","guid":{"rendered":"https:\/\/www.gt-engineering.it\/approfondimenti\/%tipologia_approfondimento%\/lockout-tagout-analysis\/"},"modified":"2023-11-03T08:48:16","modified_gmt":"2023-11-03T07:48:16","slug":"lockout-tagout-analysis","status":"publish","type":"approfondimento","link":"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/lockout-tagout-analysis\/","title":{"rendered":"Lockout-Tagout Analysis"},"content":{"rendered":"\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

Two major international standards support the use of \u2018Zero Energy\u2019 to reduce risk in machinery.<\/p>\n

ISO 14118: Safety of machinery \u2013 Prevention of unexpected start-up (Latest edition: 2017)<\/i><\/p>\n

ANSI ASSE Z244.1: The Control of Hazardous Energy Lockout, Tagout and Alternative Methods (Latest edition: 2016)<\/i><\/p><\/blockquote>\n

\u201cHazardous energy\u201d refers to energies generated by electricity, pneumatics, hydraulics, gravity, chemistry, combustion gases (methane), etc.<\/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 The principle of “Zero Energy” <\/h4>\n <\/div>\n <\/div>\n \n \n
\n \n
\n

The zero energy principle is simple: when one needs access to a segregated (dangerous) area of a machine, one must isolate and dissipate all energy and prevent another person from re-energising it by installing a lockout. Then place a tag in order to be easily contacted (tagout). Finally, before starting with the operation, make sure that the part to be operated on has been de-energised (testout).<\/p>\n

In countries such as the USA, Canada and the UK, Social Law require the application of this technique. This makes the application of Lockout-Tagout very widespread in these countries.<\/p>\n

In many other European countries this methodology is indicated in the technical regulations (which are not mandatory). This makes Lockout-Tagout more of an exception than a rule.<\/p>\n

\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 Alternative methods <\/h4>\n <\/div>\n <\/div>\n \n \n
\n \n
\n

Lockout-Tagout cannot always be used. Consider, for example, access to a hazardous area where a robot has to be programmed by means of a hand-held hand control.<\/p>\n

In this case, the operator must rely on the fact that all movements are stopped by a safety loop (interlocks, safety logic, contactors, actuators) that must comply with EN ISO 13849 or other functional safety standards.<\/p>\n

This is just one example. There are other methods that ensure an adequate level of safety, provided a proper risk analysis has been carried out first.<\/p>\n

This approach is called \u2018alternative methods\u2019 in the Z244.1 standard. This is what is stated in the standard:<\/p>\n

Lockout or tagout shall be used unless the user can demonstrate an alternative method will\u00a0<\/em>provide effective protection for persons. When lockout or tagout is not used, then alternative<\/em>
\nmethods shall be used only after the hazards have been assessed and risks documented.<\/em><\/p><\/blockquote>\n

This approach is called \u2018Other measures to prevent unexpected start-up\u2019 in the ISO 14118 standard. Below is what is stated in the standard.<\/p>\n

Where the risk assessment shows that isolation and energy dissipation are not appropriate for an intervention (e.g. manual loading\/unloading) , the following measures necessary to prevent unexpected start-up shall be taken as appropriate:<\/p>\n

\u2013 measures taken in the control system to prevent the generation of start commands from unintended
\nactuations of a start control device or other parts (e.g. sensors, power control elements) , from failures
\nin or from external influences (vibration, shocks, disturbances of the power supply) (see 6.2);
\n\u2013 measures taken at level A, B or C of the machine (see Figure 1) or at mechanical disconnection
\nelements or at moving-parts (immobilization) , to prevent unintended start commands resulting in
\nan unexpected start-up;
\n-measures implemented in the control system to automatically stop the hazard-generating part of
\nthe machine before a hazardous event can arise from an unexpected\/unintended start-up of this
\npart.<\/p><\/blockquote>\n

\"Alternative<\/p>\n<\/div> <\/div>\n \n \n

<\/div>\n \n\n <\/div>\n <\/section>\n\n \n","protected":false},"excerpt":{"rendered":"

Hazardous energy related incidents is a generator of fatalities, in USA & Canada we talk about Lockout-Tagout and the reference USA standard is ANSI\/ASSE Z244.1<\/p>\n","protected":false},"author":1,"featured_media":1669,"parent":0,"menu_order":87,"template":"","meta":{"_acf_changed":false,"footnotes":""},"tipologia_approfondimento":[51],"class_list":["post-1668","approfondimento","type-approfondimento","status-publish","has-post-thumbnail","hentry","tipologia_approfondimento-electrical-hazard-and-arc-flash-mitigation"],"acf":{"sottotitolo":"ISO 14118 \"Safety of Machinery\" and USA Standard ANSI\/ASSE Z244.1","allegati":null},"yoast_head":"\nLockout-Tagout Analysis, ISO 14118, USA Standard ANSI\/ASSE Z244.1<\/title>\n<meta name=\"description\" content=\"Hazardous energy related incidents is a generator of fatalities, in USA & Canada we talk about Lockout-Tagout and the reference USA standard is ANSI\/ASSE Z244.1\" \/>\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\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/lockout-tagout-analysis\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Lockout-Tagout Analysis\" \/>\n<meta property=\"og:description\" content=\"Hazardous energy related incidents is a generator of fatalities, in USA & Canada we talk about Lockout-Tagout and the reference USA standard is ANSI\/ASSE Z244.1\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/lockout-tagout-analysis\/\" \/>\n<meta property=\"og:site_name\" content=\"Gt-Engineering\" \/>\n<meta property=\"article:modified_time\" content=\"2023-11-03T07:48:16+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/Z244-11.jpg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Lockout-Tagout Analysis\" \/>\n<meta name=\"twitter:description\" content=\"Hazardous energy related incidents is a generator of fatalities, in USA & Canada we talk about Lockout-Tagout and the reference USA standard is ANSI\/ASSE Z244.1\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/Z244-11.jpg\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/lockout-tagout-analysis\/\",\"url\":\"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/lockout-tagout-analysis\/\",\"name\":\"Lockout-Tagout Analysis, ISO 14118, USA Standard ANSI\/ASSE Z244.1\",\"isPartOf\":{\"@id\":\"https:\/\/www.gt-engineering.it\/en\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/lockout-tagout-analysis\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/lockout-tagout-analysis\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/Z244-11.jpg\",\"datePublished\":\"2023-02-21T09:06:49+00:00\",\"dateModified\":\"2023-11-03T07:48:16+00:00\",\"description\":\"Hazardous energy related incidents is a generator of fatalities, in USA & Canada we talk about Lockout-Tagout and the reference USA standard is ANSI\/ASSE Z244.1\",\"breadcrumb\":{\"@id\":\"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/lockout-tagout-analysis\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/lockout-tagout-analysis\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/lockout-tagout-analysis\/#primaryimage\",\"url\":\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/Z244-11.jpg\",\"contentUrl\":\"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/Z244-11.jpg\",\"width\":695,\"height\":828,\"caption\":\"Lockout-Tagout Analysis\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/lockout-tagout-analysis\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.gt-engineering.it\/en\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Insights\",\"item\":\"https:\/\/www.gt-engineering.it\/en\/approfondimenti\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Electrical Safety and Arc Flash Mitigation\",\"item\":\"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Lockout-Tagout Analysis\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.gt-engineering.it\/en\/#website\",\"url\":\"https:\/\/www.gt-engineering.it\/en\/\",\"name\":\"Gt-Engineering\",\"description\":\"bizonweb\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.gt-engineering.it\/en\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Lockout-Tagout Analysis, ISO 14118, USA Standard ANSI\/ASSE Z244.1","description":"Hazardous energy related incidents is a generator of fatalities, in USA & Canada we talk about Lockout-Tagout and the reference USA standard is ANSI\/ASSE Z244.1","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/lockout-tagout-analysis\/","og_locale":"en_US","og_type":"article","og_title":"Lockout-Tagout Analysis","og_description":"Hazardous energy related incidents is a generator of fatalities, in USA & Canada we talk about Lockout-Tagout and the reference USA standard is ANSI\/ASSE Z244.1","og_url":"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/lockout-tagout-analysis\/","og_site_name":"Gt-Engineering","article_modified_time":"2023-11-03T07:48:16+00:00","og_image":[{"url":"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/Z244-11.jpg","type":"","width":"","height":""}],"twitter_card":"summary_large_image","twitter_title":"Lockout-Tagout Analysis","twitter_description":"Hazardous energy related incidents is a generator of fatalities, in USA & Canada we talk about Lockout-Tagout and the reference USA standard is ANSI\/ASSE Z244.1","twitter_image":"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/Z244-11.jpg","schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/lockout-tagout-analysis\/","url":"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/lockout-tagout-analysis\/","name":"Lockout-Tagout Analysis, ISO 14118, USA Standard ANSI\/ASSE Z244.1","isPartOf":{"@id":"https:\/\/www.gt-engineering.it\/en\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/lockout-tagout-analysis\/#primaryimage"},"image":{"@id":"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/lockout-tagout-analysis\/#primaryimage"},"thumbnailUrl":"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/Z244-11.jpg","datePublished":"2023-02-21T09:06:49+00:00","dateModified":"2023-11-03T07:48:16+00:00","description":"Hazardous energy related incidents is a generator of fatalities, in USA & Canada we talk about Lockout-Tagout and the reference USA standard is ANSI\/ASSE Z244.1","breadcrumb":{"@id":"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/lockout-tagout-analysis\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/lockout-tagout-analysis\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/lockout-tagout-analysis\/#primaryimage","url":"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/Z244-11.jpg","contentUrl":"https:\/\/www.gt-engineering.it\/wp-content\/uploads\/2023\/01\/Z244-11.jpg","width":695,"height":828,"caption":"Lockout-Tagout Analysis"},{"@type":"BreadcrumbList","@id":"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/lockout-tagout-analysis\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.gt-engineering.it\/en\/"},{"@type":"ListItem","position":2,"name":"Insights","item":"https:\/\/www.gt-engineering.it\/en\/approfondimenti\/"},{"@type":"ListItem","position":3,"name":"Electrical Safety and Arc Flash Mitigation","item":"https:\/\/www.gt-engineering.it\/en\/insights\/electrical-hazard-and-arc-flash-mitigation\/"},{"@type":"ListItem","position":4,"name":"Lockout-Tagout Analysis"}]},{"@type":"WebSite","@id":"https:\/\/www.gt-engineering.it\/en\/#website","url":"https:\/\/www.gt-engineering.it\/en\/","name":"Gt-Engineering","description":"bizonweb","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.gt-engineering.it\/en\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/approfondimento\/1668","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/approfondimento"}],"about":[{"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/types\/approfondimento"}],"author":[{"embeddable":true,"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/users\/1"}],"version-history":[{"count":9,"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/approfondimento\/1668\/revisions"}],"predecessor-version":[{"id":43722,"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/approfondimento\/1668\/revisions\/43722"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/media\/1669"}],"wp:attachment":[{"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/media?parent=1668"}],"wp:term":[{"taxonomy":"tipologia_approfondimento","embeddable":true,"href":"https:\/\/www.gt-engineering.it\/en\/wp-json\/wp\/v2\/tipologia_approfondimento?post=1668"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}