{"product_id":"lev108-guide-on-reverse-jet-filters-copy-copy","title":"LEV109: On-Torch Extraction","description":"\u003ch3 data-start=\"361\" data-end=\"414\"\u003eGuidance for Control of MIG Welding Fume Exposure\u003c\/h3\u003e\n\u003cp data-start=\"416\" data-end=\"463\"\u003eWelding fume control has changed — permanently.\u003c\/p\u003e\n\u003cp data-start=\"465\" data-end=\"897\"\u003eSince the International Agency for Research on Cancer (IARC) reclassified mild steel welding fume as a \u003cstrong data-start=\"568\" data-end=\"596\"\u003eGroup 1 human carcinogen\u003c\/strong\u003e, the UK Health and Safety Executive (HSE) has made it clear: \u003cstrong data-start=\"658\" data-end=\"697\"\u003eall welding fume must be controlled\u003c\/strong\u003e, without exception. Yet on sites across the UK, on-torch extraction systems are still misunderstood, poorly maintained, or relied upon without any real assessment of whether they’re actually working.\u003c\/p\u003e\n\u003cp data-start=\"899\" data-end=\"1002\"\u003eLEV109: On-Torch Extraction was written to close that gap between \u003cem data-start=\"965\" data-end=\"982\"\u003eassumed control\u003c\/em\u003e and \u003cem data-start=\"987\" data-end=\"1001\"\u003ereal control\u003c\/em\u003e.\u003c\/p\u003e\n\u003cp data-start=\"1004\" data-end=\"1226\"\u003eThis guide provides clear, practical, field-based guidance on how on-torch extraction systems really perform, how they fail, and how to assess them properly during a COSHH Regulation 9 Thorough Examination and Test (TExT).\u003c\/p\u003e\n\u003chr data-start=\"1228\" data-end=\"1231\"\u003e\n\u003ch2 data-start=\"1233\" data-end=\"1280\"\u003eA Practical Guide to Real-World Fume Control\u003c\/h2\u003e\n\u003cp data-start=\"1282\" data-end=\"1577\"\u003eOn-torch extraction can be an effective engineering control — but only when it is correctly specified, maintained, and used. In practice, many systems capture far less fume than expected due to damaged shrouds, leaking hoses, blinded filters, misused air bleeds, or simple lack of understanding.\u003c\/p\u003e\n\u003cp data-start=\"1579\" data-end=\"1634\"\u003eLEV109 explains what’s actually happening at the torch.\u003c\/p\u003e\n\u003cp data-start=\"1636\" data-end=\"1852\"\u003eWritten for engineers, LEV testers, duty holders, and health \u0026amp; safety professionals, the guide breaks down the entire system — from torch to filter — showing how each component affects capture efficiency at the weld.\u003c\/p\u003e\n\u003cp data-start=\"1854\" data-end=\"1896\"\u003eInside, you’ll find practical guidance on:\u003c\/p\u003e\n\u003cul data-start=\"1898\" data-end=\"2678\"\u003e\n\u003cli data-start=\"1898\" data-end=\"1951\"\u003e\n\u003cp data-start=\"1900\" data-end=\"1951\"\u003eMIG welding fume characteristics and health risks\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1952\" data-end=\"2009\"\u003e\n\u003cp data-start=\"1954\" data-end=\"2009\"\u003eLegal duties under COSHH and current HSE expectations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2010\" data-end=\"2055\"\u003e\n\u003cp data-start=\"2012\" data-end=\"2055\"\u003eThe hierarchy of control for welding fume\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2056\" data-end=\"2120\"\u003e\n\u003cp data-start=\"2058\" data-end=\"2120\"\u003eHow on-torch extraction systems work — and their limitations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2121\" data-end=\"2173\"\u003e\n\u003cp data-start=\"2123\" data-end=\"2173\"\u003eTorch design, shroud types, and shroud condition\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2174\" data-end=\"2227\"\u003e\n\u003cp data-start=\"2176\" data-end=\"2227\"\u003eFlexible hose damage, leakage, and airflow losses\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2228\" data-end=\"2301\"\u003e\n\u003cp data-start=\"2230\" data-end=\"2301\"\u003eFilter units, filtration classes (W1, W2, W3), and DIN EN ISO 21904-2\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2302\" data-end=\"2366\"\u003e\n\u003cp data-start=\"2304\" data-end=\"2366\"\u003eFilter cleaning methods and differential pressure monitoring\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2367\" data-end=\"2448\"\u003e\n\u003cp data-start=\"2369\" data-end=\"2448\"\u003eAir bleeds — why they exist, how they’re misused, and how they affect capture\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2449\" data-end=\"2509\"\u003e\n\u003cp data-start=\"2451\" data-end=\"2509\"\u003eMeasuring airflow at both the filter inlet and the torch\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2510\" data-end=\"2577\"\u003e\n\u003cp data-start=\"2512\" data-end=\"2577\"\u003eTypical real-world losses (often 50–75%) between unit and torch\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2578\" data-end=\"2635\"\u003e\n\u003cp data-start=\"2580\" data-end=\"2635\"\u003ePerformance issues during corner and confined welding\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2636\" data-end=\"2678\"\u003e\n\u003cp data-start=\"2638\" data-end=\"2678\"\u003eWhen LEV must be supplemented with RPE\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2680\" data-end=\"2813\"\u003eThe guide also includes structured checklists, worked examples, and site notes to support consistent and defensible TExT assessments.\u003c\/p\u003e\n\u003chr data-start=\"2815\" data-end=\"2818\"\u003e\n\u003ch2 data-start=\"2820\" data-end=\"2839\"\u003eWhy This Matters\u003c\/h2\u003e\n\u003cp data-start=\"2841\" data-end=\"2882\"\u003eWelding fume doesn’t just affect welders.\u003c\/p\u003e\n\u003cp data-start=\"2884\" data-end=\"3100\"\u003ePoorly controlled fume spreads throughout the workspace, exposing nearby workers, supervisors, and maintenance staff to hazardous metal particulates — including manganese, hexavalent chromium, nickel, and zinc oxide.\u003c\/p\u003e\n\u003cp data-start=\"3102\" data-end=\"3139\"\u003eCommon failures seen on site include:\u003c\/p\u003e\n\u003cul data-start=\"3141\" data-end=\"3423\"\u003e\n\u003cli data-start=\"3141\" data-end=\"3177\"\u003e\n\u003cp data-start=\"3143\" data-end=\"3177\"\u003eMissing or damaged torch shrouds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3178\" data-end=\"3214\"\u003e\n\u003cp data-start=\"3180\" data-end=\"3214\"\u003eAir bleeds left permanently open\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3215\" data-end=\"3263\"\u003e\n\u003cp data-start=\"3217\" data-end=\"3263\"\u003eCrushed, holed, or UV-damaged flexible hoses\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3264\" data-end=\"3303\"\u003e\n\u003cp data-start=\"3266\" data-end=\"3303\"\u003eFilters blinded by lack of cleaning\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3304\" data-end=\"3366\"\u003e\n\u003cp data-start=\"3306\" data-end=\"3366\"\u003eRecirculating units without effective secondary filtration\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3367\" data-end=\"3423\"\u003e\n\u003cp data-start=\"3369\" data-end=\"3423\"\u003eSystems assumed to work, but never properly measured\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3425\" data-end=\"3601\"\u003eLEV109 helps practitioners identify these failures early, understand their impact on exposure, and take proportionate corrective action — protecting both health and compliance.\u003c\/p\u003e\n\u003chr data-start=\"3603\" data-end=\"3606\"\u003e\n\u003ch2 data-start=\"3608\" data-end=\"3632\"\u003eWho This Guide Is For\u003c\/h2\u003e\n\u003cp data-start=\"3634\" data-end=\"3666\"\u003eLEV109 is essential reading for:\u003c\/p\u003e\n\u003cul data-start=\"3668\" data-end=\"3865\"\u003e\n\u003cli data-start=\"3668\" data-end=\"3711\"\u003e\n\u003cp data-start=\"3670\" data-end=\"3711\"\u003eWelding engineers and workshop managers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3712\" data-end=\"3749\"\u003e\n\u003cp data-start=\"3714\" data-end=\"3749\"\u003eLEV engineers and COSHH assessors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3750\" data-end=\"3777\"\u003e\n\u003cp data-start=\"3752\" data-end=\"3777\"\u003eOccupational hygienists\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3778\" data-end=\"3811\"\u003e\n\u003cp data-start=\"3780\" data-end=\"3811\"\u003eHealth \u0026amp; safety professionals\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3812\" data-end=\"3865\"\u003e\n\u003cp data-start=\"3814\" data-end=\"3865\"\u003eDuty holders responsible for welding fume control\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3867\" data-end=\"4055\"\u003eWhether you’re specifying systems, inspecting them, testing them, or relying on them to protect workers, this guide gives you the technical understanding needed to make informed decisions.\u003c\/p\u003e\n\u003chr data-start=\"4057\" data-end=\"4060\"\u003e\n\u003ch2 data-start=\"4062\" data-end=\"4080\"\u003eProduct Details\u003c\/h2\u003e\n\u003cul data-start=\"4082\" data-end=\"4486\"\u003e\n\u003cli data-start=\"4082\" data-end=\"4176\"\u003e\n\u003cp data-start=\"4084\" data-end=\"4176\"\u003e\u003cstrong data-start=\"4084\" data-end=\"4094\"\u003eTitle:\u003c\/strong\u003e LEV109: On-Torch Extraction – Guidance for Control of MIG Welding Fume Exposure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4177\" data-end=\"4221\"\u003e\n\u003cp data-start=\"4179\" data-end=\"4221\"\u003e\u003cstrong data-start=\"4179\" data-end=\"4190\"\u003eSeries:\u003c\/strong\u003e LEV Academy Technical Guides\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4222\" data-end=\"4257\"\u003e\n\u003cp data-start=\"4224\" data-end=\"4257\"\u003e\u003cstrong data-start=\"4224\" data-end=\"4235\"\u003eFormat:\u003c\/strong\u003e Digital guide (PDF)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4258\" data-end=\"4336\"\u003e\n\u003cp data-start=\"4260\" data-end=\"4336\"\u003e\u003cstrong data-start=\"4260\" data-end=\"4270\"\u003eFocus:\u003c\/strong\u003e Practical assessment and control of on-torch extraction systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4337\" data-end=\"4371\"\u003e\n\u003cp data-start=\"4339\" data-end=\"4371\"\u003e\u003cstrong data-start=\"4339\" data-end=\"4350\"\u003eAuthor:\u003c\/strong\u003e Louise Davies Wood\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4372\" data-end=\"4404\"\u003e\n\u003cp data-start=\"4374\" data-end=\"4404\"\u003e\u003cstrong data-start=\"4374\" data-end=\"4388\"\u003ePublished:\u003c\/strong\u003e November 2025\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4405\" data-end=\"4486\"\u003e\n\u003cp data-start=\"4407\" data-end=\"4486\"\u003e\u003cstrong data-start=\"4407\" data-end=\"4432\"\u003eApplicable Standards:\u003c\/strong\u003e COSHH Regulations, HSE Guidance, DIN EN ISO 21904-2\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LEV Academy","offers":[{"title":"Default Title","offer_id":52699538489683,"sku":null,"price":50.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/3313\/8771\/files\/Screenshot_2026-05-04_222144.png?v=1777929726","url":"https:\/\/www.levacademy.co.uk\/products\/lev108-guide-on-reverse-jet-filters-copy-copy","provider":"LEV Academy","version":"1.0","type":"link"}