{"id":1707,"date":"2025-10-05T13:42:45","date_gmt":"2025-10-05T13:42:45","guid":{"rendered":"https:\/\/www.avw.co.uk\/wordpress\/?page_id=1707"},"modified":"2026-04-15T18:58:16","modified_gmt":"2026-04-15T18:58:16","slug":"bs17206","status":"publish","type":"page","link":"https:\/\/www.avw.co.uk\/wordpress\/bs17206\/","title":{"rendered":"BS17206"},"content":{"rendered":"<div class=\"bs17206\">\n<section class=\"card\">\n<h1>BS EN 17206<\/h1>\n<p>BS EN 17206 defines safety requirements and inspection principles for machinery used in stages and production environments within the entertainment industry.<\/p>\n<p>The standard replaced BS 7905-1 and BS 7906-1 and provides a unified framework for the design, control, inspection, and safe operation of stage machinery across theatres, studios, touring productions, and live-event venues.<\/p>\n<p>This page provides a practical overview intended for engineers, production managers, technical managers, and automation specialists working with stage machinery.<\/p>\n<\/section>\n<section class=\"card\">\n<h2>Scope of BS EN 17206<\/h2>\n<p>The standard applies to machinery including:<\/p>\n<ul>\n<li>Fly-bar systems and point hoists<\/li>\n<li>Performer flying systems<\/li>\n<li>Lighting bars and technical bars<\/li>\n<li>Orchestra and stage elevators<\/li>\n<li>Stage wagons and tracking scenery<\/li>\n<li>Revolving stages and turntables<\/li>\n<li>Trap lifts and compensating elevators<\/li>\n<li>Tilting stage floors<\/li>\n<li>Scenery storage elevators<\/li>\n<\/ul>\n<p>BS EN 17206 addresses hazards arising from moving loads, scenery, equipment, and performers within production environments.<\/p>\n<\/section>\n<section class=\"card\">\n<h2>Use-Case Classifications (UC1\u2013UC6)<\/h2>\n<p>BS EN 17206 introduces six Use-Case classifications to define the required safety-function integrity based on risk.<\/p>\n<div class=\"table-wrap\">\n<table>\n<thead>\n<tr>\n<th>UC<\/th>\n<th>Situation<\/th>\n<th>Typical Example<\/th>\n<th>Safety Focus<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>UC1<\/td>\n<td>No persons in hazard zone<\/td>\n<td>Rigging hoists during setup<\/td>\n<td>Basic protective functions<\/td>\n<\/tr>\n<tr>\n<td>UC2<\/td>\n<td>Grouped hoists sharing load<\/td>\n<td>Coupled fly bars<\/td>\n<td>Load monitoring and synchronisation<\/td>\n<\/tr>\n<tr>\n<td>UC3<\/td>\n<td>People near moving machinery<\/td>\n<td>Flying scenery over performers<\/td>\n<td>Speed\/position monitoring<\/td>\n<\/tr>\n<tr>\n<td>UC4<\/td>\n<td>Multi-axis motion with people present<\/td>\n<td>Tracked scenic elements<\/td>\n<td>Group monitoring and coordination<\/td>\n<\/tr>\n<tr>\n<td>UC5<\/td>\n<td>Person lifted (single axis)<\/td>\n<td>Single-point performer flying<\/td>\n<td>High-integrity safety functions<\/td>\n<\/tr>\n<tr>\n<td>UC6<\/td>\n<td>Person lifted (multi-axis)<\/td>\n<td>Multi-point flying systems<\/td>\n<td>Highest safety-function integrity<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>The applicable Use Case may differ between setup, rehearsal, and performance operation and must be determined through risk assessment.<\/p>\n<\/section>\n<section class=\"card\">\n<h2>Performance Level (PL) and Safety Integrity Level (SIL)<\/h2>\n<p>BS EN 17206 references functional safety concepts drawn from standards such as EN ISO 13849-1 and IEC 61508\/62061. These define the reliability required of safety-related control functions.<\/p>\n<h3>Performance Level (PL)<\/h3>\n<p>Performance Level describes the probability of failure of safety-related control systems and is typically expressed from PLa to PLe, where PLe represents the highest integrity.<\/p>\n<p>PL is commonly used for machine-control safety systems implemented using safety PLCs, relays, sensors, and drives.<\/p>\n<h3>Safety Integrity Level (SIL)<\/h3>\n<p>Safety Integrity Level describes risk-reduction capability in programmable or electronic safety systems and is defined from SIL1 to SIL3.<\/p>\n<p>Stage automation safety functions often align with SIL2 or SIL3 depending on risk and Use Case classification.<\/p>\n<p>In practice, stage-automation systems typically implement safety functions such as emergency stop, speed monitoring, position monitoring, overload detection, and synchronisation monitoring using certified safety components.<\/p>\n<\/section>\n<section class=\"card\">\n<h2>Safety Functions in Stage Machinery<\/h2>\n<p>BS EN 17206 identifies safety functions that may be required depending on Use Case classification and risk assessment.<\/p>\n<ul>\n<li>Emergency stop systems<\/li>\n<li>Dead-man control<\/li>\n<li>Speed monitoring<\/li>\n<li>Position monitoring<\/li>\n<li>Overload and underload detection<\/li>\n<li>Slack-rope detection<\/li>\n<li>Brake monitoring<\/li>\n<li>Travel-limit protection<\/li>\n<li>Loss-of-synchronisation detection<\/li>\n<\/ul>\n<p>These safety functions must be implemented with appropriate reliability and validated as part of the machinery safety design process.<\/p>\n<\/section>\n<section class=\"card\">\n<h2>Common Safety Mistakes in Stage Automation<\/h2>\n<ul>\n<li>Assigning the wrong Use Case classification<\/li>\n<li>Relying on software without independent safety monitoring<\/li>\n<li>Ignoring synchronisation monitoring for grouped hoists<\/li>\n<li>Insufficient inspection planning<\/li>\n<li>Missing documentation in the technical file<\/li>\n<li>Incorrect safety-component selection<\/li>\n<\/ul>\n<p>Many incidents in stage machinery arise from misunderstanding risk rather than equipment failure.<\/p>\n<\/section>\n<section class=\"card\">\n<h2>References<\/h2>\n<ul>\n<li>BS EN 17206:2020 \u2014 Machinery for stages and production areas<\/li>\n<li>EN ISO 13849-1 \u2014 Safety-related parts of control systems<\/li>\n<li>IEC 61508 \/ IEC 62061 \u2014 Functional safety standards<\/li>\n<li>LOLER \u2014 Lifting Operations and Lifting Equipment Regulations<\/li>\n<li>PUWER \u2014 Provision and Use of Work Equipment Regulations<\/li>\n<li><a href=\"https:\/\/www.avw.co.uk\/wordpress\/wp-content\/uploads\/AVW-Technical-Guide_BS17206.pdf\"><br \/>\nAVW Guide to BS EN 17206<br \/>\n<\/a><\/li>\n<\/ul>\n<\/section>\n<footer>\u00a92026 AVW Controls Ltd<\/footer>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>BS EN 17206 BS EN 17206 defines safety requirements and inspection principles for machinery used in stages and production environments within the entertainment industry. The standard replaced BS 7905-1 and BS 7906-1 and provides a unified framework for the design, control, inspection, and safe operation of stage machinery across theatres, studios, touring productions, and live-event &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.avw.co.uk\/wordpress\/bs17206\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;BS17206&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"iawp_total_views":10,"footnotes":""},"class_list":["post-1707","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.avw.co.uk\/wordpress\/wp-json\/wp\/v2\/pages\/1707","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.avw.co.uk\/wordpress\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.avw.co.uk\/wordpress\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.avw.co.uk\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.avw.co.uk\/wordpress\/wp-json\/wp\/v2\/comments?post=1707"}],"version-history":[{"count":0,"href":"https:\/\/www.avw.co.uk\/wordpress\/wp-json\/wp\/v2\/pages\/1707\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.avw.co.uk\/wordpress\/wp-json\/wp\/v2\/media?parent=1707"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}