{"id":126949,"date":"2023-05-23T08:00:56","date_gmt":"2023-05-23T07:00:56","guid":{"rendered":"https:\/\/www.pbctoday.co.uk\/news\/?p=126949"},"modified":"2023-05-22T16:12:43","modified_gmt":"2023-05-22T15:12:43","slug":"passive-fire-protection-consultation-on-approved-document-b","status":"publish","type":"post","link":"https:\/\/www.pbctoday.co.uk\/news\/building-control-news\/passive-fire-protection-consultation-on-approved-document-b\/126949\/","title":{"rendered":"Passive fire protection: Consultation on Approved Document B"},"content":{"rendered":"<h2>Association for Specialist Fire Protection (ASFP) technical and regulatory affairs officer Niall Rowan discusses the implications of the government\u2019s proposed changes to Approved Document B on the passive fire protection industry<\/h2>\n<p>The latest government consultation on Approved Document B (AD-B) was published on 23 December 2022 and closed on 17 March. A significant area of concern for ASFP members and the wider <a href=\"https:\/\/www.pbctoday.co.uk\/news\/digital-construction\/the-digital-role-in-passive-fire-protection\/113709\/\" target=\"_blank\" rel=\"noopener\">passive fire protection (PFP)<\/a> community is the proposal to remove testing based on BS 476 from AD-B.<img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-126965 alignright\" src=\"https:\/\/www.pbctoday.co.uk\/news\/wp-content\/uploads\/2023\/05\/Doc-B-300x180.png\" alt=\"Approved document B\" width=\"300\" height=\"180\" srcset=\"https:\/\/www.pbctoday.co.uk\/news\/wp-content\/uploads\/2023\/05\/Doc-B-300x180.png 300w, https:\/\/www.pbctoday.co.uk\/news\/wp-content\/uploads\/2023\/05\/Doc-B-1024x614.png 1024w, https:\/\/www.pbctoday.co.uk\/news\/wp-content\/uploads\/2023\/05\/Doc-B-768x461.png 768w, https:\/\/www.pbctoday.co.uk\/news\/wp-content\/uploads\/2023\/05\/Doc-B-1536x922.png 1536w, https:\/\/www.pbctoday.co.uk\/news\/wp-content\/uploads\/2023\/05\/Doc-B-2048x1229.png 2048w, https:\/\/www.pbctoday.co.uk\/news\/wp-content\/uploads\/2023\/05\/Doc-B-696x418.png 696w, https:\/\/www.pbctoday.co.uk\/news\/wp-content\/uploads\/2023\/05\/Doc-B-1068x641.png 1068w, https:\/\/www.pbctoday.co.uk\/news\/wp-content\/uploads\/2023\/05\/Doc-B-1920x1152.png 1920w, https:\/\/www.pbctoday.co.uk\/news\/wp-content\/uploads\/2023\/05\/Doc-B-700x420.png 700w, https:\/\/www.pbctoday.co.uk\/news\/wp-content\/uploads\/2023\/05\/Doc-B.png 2000w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>In principle, the ASFP has no objection and would even support the move to remove national classifications for reaction to fire and fire resistance from AD-B. However, the move could have a significant impact on some passive fire protection sectors, such as timber fire doors.<\/p>\n<h3>Reaction to fire: European and British standards<\/h3>\n<p>For reaction to fire, the European standards test a range of scopes of severity which are similar to the <a href=\"https:\/\/asfp.org.uk\/page\/Hub_BSi_Standards\" target=\"_blank\" rel=\"noopener\">British Standards<\/a>, from Non-combustible\/Euroclass A1 down to small-scale ignitability tests\/Euroclass E. The European tests measure different parameters to the existing British ones and\/or use different measurement technologies, making direct transposition impossible. However, the broad range of classes and their separation is similar.<\/p>\n<p>The exception to this is Class 0. This was originally created as a simple class incorporating <a href=\"https:\/\/www.pbctoday.co.uk\/news\/building-control-news\/burnt-by-non-compliant-fire-curtains\/126701\/\" target=\"_blank\" rel=\"noopener\">flame spread<\/a> and heat release for internal wall and ceiling linings and research in the 2000s for these products found a good correlation between A1\/A2 and non\/limited combustibility, for example.<\/p>\n<p>However, no tests were undertaken on cladding materials and certainly none on aluminium composite materials. This led to Class 0 being attained by materials which, when tested under the European system, would typically yield a much lower, worse-performing class. The rest is history. The confusion and poor transposition of Class 0 \u2013 particularly in respect of cladding materials highlighted in phase 2 of the <a href=\"https:\/\/www.pbctoday.co.uk\/news\/building-control-news\/government-consequences-cladding-companies-who-refuse-remediate-grenfell\/125238\/\" target=\"_blank\" rel=\"noopener\">Grenfell Tower Public Inquiry<\/a> \u2013 means that the removal of BS classes for reaction to fire is long overdue.<\/p>\n<h3>The ASFP supports the removal of national classifications for fire resistance<\/h3>\n<p>The ASFP has no objection in principle and would even support the move to remove national classifications for fire resistance. However, as it is currently proposed, it will lead to a situation where the products and the end-use applications of such products will be very restricted since there is no \u201cexpert judgement\u201d permitted within this process. The results of a fire test (BS or EN) are only applicable to the item tested, with no variation allowed.<\/p>\n<p>It soon becomes apparent that the combinations and permutations are overwhelming. If Authorities Having Jurisdiction (AHJs) were to insist on a fire test on every combination and permutation of building products, there are simply not enough fire test laboratories in the world to cope with the demand.<\/p>\n<p>This is where the role of assessments comes in; to cover the many combinations and permutations of products and end-use applications that cannot all be tested. These allow engineering judgement to be used within the strict guidelines in the Passive Fire Protection Forum\u2019s Guide to Undertaking <a href=\"https:\/\/www.bafe.org.uk\/bafe-fire-safety-services\" target=\"_blank\" rel=\"noopener\">Technical Assessments of the Fire Performance<\/a> of Construction Products Based on Fire Test Evidence, currently referenced in AD-B. However, such assessments cannot be used in the European system.<\/p>\n<p>Furthermore, EN tests are known to be more severe than the BS tests. This will lead to a significant increase in the cost of passive fire protection, with no technical or life safety justification.<\/p>\n<h3>Cost concerns from industry professionals<\/h3>\n<p>The current situation with some industries, particularly the fire door and hardware industry, is that while there is a lot of testing of steel doors to EN standards, the bulk of the timber <a href=\"https:\/\/www.pbctoday.co.uk\/news\/health-safety-news\/certitek-ensuring-compliance-fire-door-installers-doorsets\/126522\/\" target=\"_blank\" rel=\"noopener\">fire door sector<\/a> still tests to BS476. The timber fire door market comprises predominantly UK-based manufacturers who look to solely supply the UK market.<\/p>\n<p>The vast majority of their existing test evidence will become useless. Existing designs will need to be upgraded, causing a massive reduction in product variations, and an increase in product costing. If supporting data for products in the market is from tests based on BS476, assessment and third-party certification will not be allowed to be used going forward.<\/p>\n<p>If the results of European tests (as opposed to classes) for fire resistance can be supplemented by assessments to EN standards then the situation would be improved, providing there is a sufficient transition period.<\/p>\n<p>While a 12-month transition period may be enough for reaction to fire, it is not nearly enough for fire resistance. Manufacturers will need to replicate a vast amount of expensive fire testing, which takes time (many months) and current lead times for fire resistance furnaces are around a year. The ASFP suggests that a period of four to five years should be considered.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Niall Rowan<\/strong><br \/>\nTechnical and regulatory affairs officer<br \/>\nAssociation for Specialist Fire Protection (ASFP)<br \/>\nTel: +44 (0) 247 693 5412<br \/>\n<a href=\"mailto:info@asfp.org.uk\" target=\"_blank\" rel=\"noopener\">info@asfp.org.uk<\/a><br \/>\n<a href=\"http:\/\/www.asfp.org.uk\" target=\"_blank\" rel=\"noopener\">www.asfp.org.uk<\/a><br \/>\n<a href=\"https:\/\/twitter.com\/ASFPUK\" target=\"_blank\" rel=\"noopener\">Twitter<\/a><br \/>\n<a href=\"https:\/\/www.linkedin.com\/company\/association-for-specialist-fire-protection-asfp-\/\" target=\"_blank\" rel=\"noopener\">Linkedin<\/a><br \/>\n<a href=\"https:\/\/www.youtube.com\/asfptv\" target=\"_blank\" rel=\"noopener\">Youtube<\/a><br \/>\n<a href=\"https:\/\/www.instagram.com\/asfpofficial\/\" target=\"_blank\" rel=\"noopener\">Instagram<\/a><\/p>\n<div class=\"mk-custom-module-container\">\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Association for Specialist Fire Protection (ASFP) technical and regulatory affairs officer Niall Rowan discusses the implications of the government\u2019s proposed changes to Approved Document B on the passive fire protection industry.<\/p>\n","protected":false},"author":17,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[306],"tags":[172727,110,172606],"stakeholder_rel_tag":[],"contributor_rel_tag":[],"class_list":{"0":"post-126949","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-building-control-news","7":"tag-featured","8":"tag-fire-safety-management","9":"tag-pbc-today-may-2023"},"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.9 (Yoast SEO v26.9) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Passive fire protection: Consultation on Approved Document B<\/title>\n<meta name=\"description\" content=\"What are the implications of 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