{"id":14820,"date":"2020-07-24T17:16:09","date_gmt":"2020-07-24T15:16:09","guid":{"rendered":"http:\/\/localhost:8888\/clearsy\/references\/ouragan\/"},"modified":"2021-06-01T14:01:24","modified_gmt":"2021-06-01T12:01:24","slug":"ouragan","status":"publish","type":"references","link":"https:\/\/www.clearsy.com\/en\/references\/ouragan\/","title":{"rendered":"Assistance in the analysis and the validation of the Octys critical software"},"content":{"rendered":"\r\n\r\n\r\n<p class=\"lanceur\">OURAGAN, now Octys\u00a0 is a train control and command system (TCC) developed for the RATP (Paris subway), the Parisian transport network authority.<\/p>\r\n\r\n\r\n\r\n<p>Designed to replace the present signalling system in the Paris Metro underground network, Ouragan is a critical safety system designed to modernise the CCP (Centralised Command Posts), the signalling system and also some of the automatic safety systems.<\/p>\r\n\r\n\r\n\r\n<p class=\"lanceur\">Its main functions are:<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>to locate the position of the train on the rack,<\/li>\r\n<li>to control the different (manual or automatic) modes of piloting the train,<\/li>\r\n<li>to control the speed of the train at every point on the track,<\/li>\r\n<li>to observe the signals,<\/li>\r\n<li>to perform the required manoeuvre (except turnaround at the platform),<\/li>\r\n<li>to control the different braking modes,<\/li>\r\n<li>to control communication with the ground.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p>In order to ensure the good working of this software, CLEARSY have concluded a contract for the analysis and validation of the system software with a constructor retained as part of this project. This makes it possible to ensure the good working of the software and its conformity with the functional specifications.<\/p>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\">Our actions<\/h2>\r\n\r\n\r\n\r\n<p>As part of the OURAGAN system, CLEARSY is participating in the analysis and validation of the system software in order to prevent any malfunction which could impact on passenger safety.<\/p>\r\n\r\n\r\n\r\n<p class=\"lanceur\">CLEARSY have performed these actions based on:<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>the B model of the software<\/li>\r\n<li>the software specifications file<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p class=\"lanceur\">This project implies:<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>drafting a document for the analysis of the general formal design of the software product developed according to the formal B method in order to ensure the coherence and completeness of the B model with regard to the requirements contained in the specifications file.<\/li>\r\n<li>drafting a document setting out the analysis of the database machines and of the code linked to the said software.<\/li>\r\n<li>drafting a document describing the test cases necessary for validation.<\/li>\r\n<li>performing tests: writing and simulation of scenarios aided by the environment simulator.<\/li>\r\n<li>drafting a document setting out the results of the running tests performed to cover the previous test cases with the aim of providing an appraisal of the tests undertaken.<\/li>\r\n<\/ul>\r\n","protected":false},"excerpt":{"rendered":"<p>OURAGAN, now Octys\u00a0 is a train control and command system (TCC) developed for the RATP (Paris subway), the Parisian transport [&hellip;]<\/p>\n","protected":false},"featured_media":15048,"template":"","secteur":[],"domaines_references":[],"class_list":["post-14820","references","type-references","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - 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