{"id":8810,"date":"2020-03-13T11:25:59","date_gmt":"2020-03-13T10:25:59","guid":{"rendered":"http:\/\/localhost:8888\/clearsy\/?page_id=8810"},"modified":"2025-11-14T10:12:43","modified_gmt":"2025-11-14T08:12:43","slug":"operational-safety","status":"publish","type":"page","link":"https:\/\/www.clearsy.com\/en\/know-how\/operational-safety\/","title":{"rendered":"Operational safety"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row][vc_column]<div class=\"text-bloc\"><h1 class=\"titre_l-bleu-trait-bleu\" style=\"text-align: center;\"><span class=\"txt_MAJ\">Operational safety<\/span><\/h1>\n<\/div><div class=\"text-bloc my-2\"><p style=\"text-align: center;\">The studies carried out by CLEARSY experts concern systems or software with operating safety constraints.<\/p>\n<p style=\"text-align: center;\" class=\"titre_s-bleu\">CLEARSY offers its expertise to manufacturers, principals and certification authorities who need to develop, validate, approve or certify their systems and software<\/p>\n<\/div><div class=\"text-bloc liste-ancres liste-ancres-4\"><ul>\n<li><a href=\"#fdms\">RAMS Study<\/a><\/li>\n<li><a href=\"#fdms\">Method of analysis<\/a><\/li>\n<li><a href=\"#techniques\">Techniques<\/a><\/li>\n<li><a href=\"#exemples\">Examples of projects<\/a><\/li>\n<\/ul>\n<\/div>[\/vc_column][\/vc_row][vc_row full_width=&#8221;stretch_row&#8221; el_id=&#8221;fdms&#8221; el_class=&#8221;bg-gris py-3 py-md-4&#8243;][vc_column width=&#8221;1\/2&#8243;]<div class=\"text-bloc\"><h2 class=\"titre_m-bleu-trait-orange\"><span class=\"txt_MAJ\">RAMS study<\/span><\/h2>\n<\/div><div class=\"text-bloc\"><p>This safety study process, often called RAMS study, is centred around four main study points:<\/p>\n<ul>\n<li>The <span class=\"couleur_bleu\">reliability<\/span> study allows the system\/equipment concerned to be given a guaranteed operating time before failure (MTBF). This operating time must be as close as possible to reality. Reliability is determined in a predictive manner, and is usually based on values derived from experience.<\/li>\n<li>The <span class=\"couleur_bleu\">availability<\/span> study makes it possible to determine, according to the reliability results, the quality of the service provided by the system\/equipment.<\/li>\n<li>The <span class=\"couleur_bleu\">maintainability<\/span> study determines the ability of the system to be restored to working order.<\/li>\n<li>The <span class=\"couleur_bleu\">safety<\/span> study defines the ability of a system\/equipment to guarantee, throughout its operating life, a constant frequency of occurrence of an event identified as dreaded, i.e. an event that could cause the injury or death of one or more persons.<\/li>\n<\/ul>\n<\/div>[\/vc_column][vc_column width=&#8221;1\/2&#8243;]<div class=\"text-bloc\"><h2 class=\"titre_m-bleu-trait-orange\" style=\"text-align: left;\">Method of analysis<\/h2>\n<\/div><div class=\"text-bloc\"><p>These operational safety studies are carried out in parallel with the system\/equipment development cycle and use for each of the development phases, analysis methods such as<\/p>\n<ul>\n<li>Preliminary Hazard\/Risk Analysis (PHA\/RRA)<\/li>\n<li>Operational Risk Analysis (ORA)<\/li>\n<li>Cause tree analysis<\/li>\n<li>Markov graph<\/li>\n<li>Common Mode Analysis (CMA)<\/li>\n<li>Failure Modes, Effects and Criticality Analysis (FMECA)<\/li>\n<li>etc.<\/li>\n<\/ul>\n<\/div>[\/vc_column][\/vc_row][vc_row full_width=&#8221;stretch_row&#8221; el_id=&#8221;techniques&#8221; el_class=&#8221;py-3 py-md-4&#8243;][vc_column]<div class=\"text-bloc\"><h2 class=\"titre_m-bleu-trait-orange\"><span class=\"txt_MAJ\">TECHNIQUES<\/span><\/h2>\n<\/div>[vc_row_inner][vc_column_inner width=&#8221;1\/2&#8243;]<div class=\"text-bloc\"><p><span class=\"couleur_bleu\">THE BASIC TECHNIQUES OF CLEARSY&#8217;S CONSULTANTS FOR CONDUCTING OPERATIONAL SAFETY ANALYSIS ARE<\/span><br \/>\n&#8211; Safety analysis<br \/>\n&#8211; Demonstration and safety analysis<\/p>\n<p><span class=\"couleur_bleu\">CLEARSY SUPPORTS YOU IN YOUR ACTIVITIES:<\/span><br \/>\n&#8211; Assistance with approval\/certification<br \/>\n&#8211; Safety management<br \/>\n&#8211; Production of safety files<\/p>\n<p><span class=\"couleur_bleu\">CLEARSY APPLIES ITS EXPERTISE IN OPERATIONAL SAFETY TO THE FOLLOWING SECTORS<\/span><br \/>\n&#8211; Surface transportation industry (rail, automotive)<br \/>\n&#8211; Energy and nuclear<br \/>\n&#8211; Defence<br \/>\n&#8211; Information systems<br \/>\n&#8211; Industrial automation<\/p>\n<\/div>[\/vc_column_inner][vc_column_inner width=&#8221;1\/2&#8243;]<div class=\"text-bloc\"><p><span class=\"couleur_bleu\">CLEARSY EMPLOYEES ARE ALSO RECOGNISED AS QUALIFIED CERTIFER ASSESSORS:<\/span><br \/>\n&#8211; Controlling and signalling&#8221; for the\u00a0 software operational safety<br \/>\n&#8211; Controlling and signalling&#8221; for the safety electronics<br \/>\n&#8211; Control and command and signalling&#8221; for the railway signalling systems.<\/p>\n<p><span class=\"couleur_bleu\">FOR A RETURN ON INVESTMENT THAT CAN BE ASSESSED IN TERMS OF :<\/span><br \/>\n&#8211; Reduction in late failures<br \/>\n&#8211; Gains in validation (improved testability)<br \/>\n&#8211; Faster convergence (quality of implementation)<br \/>\n&#8211; Improved capitalisation of knowledge concerning proven software.<\/p>\n<\/div>[\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row][vc_row full_width=&#8221;stretch_row&#8221; el_class=&#8221;bg-gris&#8221; el_id=&#8221;exemples&#8221;][vc_column]<div class=\"text-bloc\"><h2 class=\"titre_m-bleu-trait-orange\" style=\"text-align: center;\">EXAMPLES OF PROJECTS IN OPERATIONAL SAFETY<\/h2>\n<\/div><div class=\"text-bloc\"><p style=\"text-align: center;\"><span class=\"txt_MAJ couleur_bleu\"><\/span>&#8211; Development of safety software for the Val de Roissy using the B Method<br \/>\n&#8211; Coppilot: platform screen doors control system<\/p>\n<\/div>[\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column][\/vc_column][\/vc_row][vc_row full_width=&#8221;stretch_row&#8221; el_id=&#8221;fdms&#8221; el_class=&#8221;bg-gris py-3 py-md-4&#8243;][vc_column width=&#8221;1\/2&#8243;][\/vc_column][vc_column width=&#8221;1\/2&#8243;][\/vc_column][\/vc_row][vc_row full_width=&#8221;stretch_row&#8221; el_id=&#8221;techniques&#8221; el_class=&#8221;py-3 py-md-4&#8243;][vc_column][vc_row_inner][vc_column_inner width=&#8221;1\/2&#8243;][\/vc_column_inner][vc_column_inner width=&#8221;1\/2&#8243;][\/vc_column_inner][\/vc_row_inner][\/vc_column][\/vc_row][vc_row full_width=&#8221;stretch_row&#8221; el_class=&#8221;bg-gris&#8221; el_id=&#8221;exemples&#8221;][vc_column][\/vc_column][\/vc_row]<\/p>\n","protected":false},"author":17,"featured_media":0,"parent":16901,"menu_order":4,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-8810","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Operational safety - CLEARSY<\/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.clearsy.com\/en\/know-how\/operational-safety\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Operational safety - CLEARSY\" \/>\n<meta property=\"og:description\" content=\"[vc_row][vc_column][\/vc_column][\/vc_row][vc_row full_width=&#8221;stretch_row&#8221; 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