{"id":103768,"date":"2025-09-15T16:45:34","date_gmt":"2025-09-15T13:45:34","guid":{"rendered":"https:\/\/onlinestandart.com\/?p=103768"},"modified":"2025-09-15T16:45:34","modified_gmt":"2025-09-15T13:45:34","slug":"infrastructure-transport-rail-bridges-tunnels","status":"publish","type":"post","link":"https:\/\/onlinestandart.com\/en\/infrastructure-transport-rail-bridges-tunnels\/","title":{"rendered":"Infrastructure (Transport, Rail, Bridges, Tunnels)"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Key standards<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>EN\u202f50126\/8\/9 (RAMS and signalling), IEC\u202f61508 (functional safety), ISO\u202f13849 (machine safety), relevant AASHTO bridge codes.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Documented issues<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Rail signalling:<\/strong> On the Cambrian Coast line, the ERTMS\/ETCS system lost temporary speed restriction data after a restart. The display still indicated the restriction was loaded. RAIB found there was <strong>no clear definition<\/strong> of \u201csafety\u2011related data,\u201d a <strong>single point of failure<\/strong>, and an <strong>Independent Safety Assessor<\/strong> failed to identify design-documentation issues. <a href=\"https:\/\/www.gov.uk\/raib-reports\/report-17-2019-loss-of-safety-critical-signalling-data-on-the-cambrian-coast-line#:~:text=trains%20by%20the%20signalling%20system,time%20for%20level%20crossing%20users\" target=\"_blank\" rel=\"noreferrer noopener\">gov.uk<\/a>.<\/li>\n\n\n\n<li><strong>Bridge design:<\/strong> The FIU pedestrian bridge collapsed because FIGG Bridge Engineers made <strong>calculation errors in load and capacity<\/strong>, and peer review did not catch them; large cracks were ignored and retensioning constituted a design change requiring independent review. <a href=\"https:\/\/www.constructiondive.com\/news\/ntsb-determines-probable-cause-for-deadly-fiu-bridge-collapse\/565578\/#:~:text=The%20National%20Transportation%20Safety%20Board,by%20FIGG%20Bridge%20Engineers%20Inc\" target=\"_blank\" rel=\"noreferrer noopener\">constructiondive.com<\/a>.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Typical challenges<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Incomplete verification of safety-critical software and data; inadequate backup or error logging.<\/li>\n\n\n\n<li>Design calculations and peer review processes fail to identify overstress or changes.<\/li>\n\n\n\n<li>Poorly defined responsibilities among contractors and safety assessors.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Best Practice playbook<\/h2>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>Implement robust safety management and RAMS processes<\/strong> for high\u2011integrity software (EN\u202f50126\/8\/9): define safety\u2011related data, use redundancy, and capture diagnostic data. <a href=\"https:\/\/www.gov.uk\/raib-reports\/report-17-2019-loss-of-safety-critical-signalling-data-on-the-cambrian-coast-line#:~:text=trains%20by%20the%20signalling%20system,time%20for%20level%20crossing%20users\" target=\"_blank\" rel=\"noreferrer noopener\">gov.uk<\/a>.<\/li>\n\n\n\n<li><strong>Independently review and validate calculations<\/strong> for bridges and tunnels; any design change requires new checks. <a href=\"https:\/\/www.constructiondive.com\/news\/ntsb-determines-probable-cause-for-deadly-fiu-bridge-collapse\/565578\/#:~:text=The%20National%20Transportation%20Safety%20Board,by%20FIGG%20Bridge%20Engineers%20Inc\" target=\"_blank\" rel=\"noreferrer noopener\">constructiondive.com<\/a>.<\/li>\n\n\n\n<li><strong>Monitor warning signs<\/strong> (e.g., cracks); treat them as potential failure indicators and follow emergency procedures.<\/li>\n\n\n\n<li><strong>Document and audit<\/strong> all safety case assumptions and test evidence; ensure the Independent Safety Assessor covers design documents thoroughly.<\/li>\n\n\n\n<li><strong>Train engineers and contractors<\/strong> in relevant standards and peer review requirements.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">References<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>RAIB report on loss of safety-critical signalling data. <a href=\"https:\/\/www.gov.uk\/raib-reports\/report-17-2019-loss-of-safety-critical-signalling-data-on-the-cambrian-coast-line#:~:text=trains%20by%20the%20signalling%20system,time%20for%20level%20crossing%20users\" target=\"_blank\" rel=\"noreferrer noopener\">gov.uk<\/a>.<\/li>\n\n\n\n<li>Construction Dive summary of FIU pedestrian bridge collapse. <a href=\"https:\/\/www.constructiondive.com\/news\/ntsb-determines-probable-cause-for-deadly-fiu-bridge-collapse\/565578\/#:~:text=The%20National%20Transportation%20Safety%20Board,by%20FIGG%20Bridge%20Engineers%20Inc\" target=\"_blank\" rel=\"noreferrer noopener\">constructiondive.com<\/a>.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Key standards Documented issues Typical challenges Best Practice playbook References<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"categories":[166],"tags":[],"class_list":["post-103768","post","type-post","status-publish","format-standard","hentry","category-case-studies"],"taxonomy_info":{"category":[{"value":166,"label":"Case Studies"}]},"featured_image_src_large":false,"author_info":{"display_name":"Online Standart","author_link":"https:\/\/onlinestandart.com\/en\/author\/online-standart\/"},"comment_info":0,"category_info":[{"term_id":166,"name":"Case Studies","slug":"case-studies","term_group":0,"term_taxonomy_id":166,"taxonomy":"category","description":"","parent":0,"count":16,"filter":"raw","cat_ID":166,"category_count":16,"category_description":"","cat_name":"Case Studies","category_nicename":"case-studies","category_parent":0}],"tag_info":false,"_links":{"self":[{"href":"https:\/\/onlinestandart.com\/en\/wp-json\/wp\/v2\/posts\/103768","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/onlinestandart.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/onlinestandart.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/onlinestandart.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/onlinestandart.com\/en\/wp-json\/wp\/v2\/comments?post=103768"}],"version-history":[{"count":0,"href":"https:\/\/onlinestandart.com\/en\/wp-json\/wp\/v2\/posts\/103768\/revisions"}],"wp:attachment":[{"href":"https:\/\/onlinestandart.com\/en\/wp-json\/wp\/v2\/media?parent=103768"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/onlinestandart.com\/en\/wp-json\/wp\/v2\/categories?post=103768"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/onlinestandart.com\/en\/wp-json\/wp\/v2\/tags?post=103768"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}