{"title":"Guides","description":"","products":[{"product_id":"lev108-guide-on-reverse-jet-filters","title":"LEV108 Guide on Reverse Jet Filters","description":"\u003cp\u003eReverse jet filter units are everywhere in industry — from powder coating booths and bakeries to CNC plasma cutters and metal fabrication plants. They quietly do one of the most important jobs in Local Exhaust Ventilation (LEV): removing hazardous dusts from the air we breathe.\u003c\/p\u003e\n\u003cp\u003eYet, despite their widespread use, \u003cstrong\u003ereverse jet systems are often misunderstood\u003c\/strong\u003e — and even more often, neglected through lack of knowledge. Many LEV engineers have seen the same story unfold: filters that pulse too weakly or too often, solenoids that fail silently, or compressed air systems that unknowingly send oil and water into filter housings. The result? Reduced control at the hood, rising differential pressures, and — ultimately — exposure risks that could have been prevented.\u003c\/p\u003e\n\u003cp\u003eThat’s exactly why I wrote \u003cstrong\u003eLEV108: Reverse Jet Filter Units\u003c\/strong\u003e. To bring the engineering basics too you. With diagrams to help you understand the workings of Reverse jet filters.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eA Practical Engineering Guide\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eLEV108 isn’t just a description of how reverse jet filters work; it’s a \u003cstrong\u003ehands-on, engineering-focused guide\u003c\/strong\u003e written for LEV practitioners who want to \u003cem\u003ereally understand\u003c\/em\u003e what’s happening inside the box.\u003c\/p\u003e\n\u003cp\u003eThe guide breaks down each component — manifolds, diaphragms, solenoids, pulse tubes, cartridges, and more — explaining not only what they do, but \u003cem\u003ehow they fail\u003c\/em\u003e and \u003cem\u003ewhat that means\u003c\/em\u003e for performance at the hood.\u003c\/p\u003e\n\u003cp\u003eIt also highlights one of the most overlooked indicators in filtration performance: \u003cstrong\u003eΔP (Delta Pascal)\u003c\/strong\u003e — the differential pressure across the filters. Too low, and you might have leaks or torn media. Too high, and your filters are blinded, your flowrate drops, and control efficiency at the hood plummets.\u003c\/p\u003e\n\u003cp\u003eBy understanding ΔP trends, engineers can predict maintenance needs, identify system faults early, and protect both equipment and people from unnecessary risk.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eWhy It Matters\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eReverse jet filters play a critical role in maintaining \u003cstrong\u003eCOSHH compliance\u003c\/strong\u003e and \u003cstrong\u003eeffective LEV control\u003c\/strong\u003e. When the system isn’t maintained or assessed properly, even minor faults can have significant health and safety consequences:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eA leaking door gasket or cracked casing can release airborne dust directly into the workspace.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eA blocked water separator can send moisture into the filters, causing them to blind or fail.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eA solenoid valve that sticks can leave one section of filters uncleaned for weeks.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eLEV108 helps practitioners recognise these warning signs during a \u003cstrong\u003eCOSHH Regulation 9 Thorough Examination and Test (TExT)\u003c\/strong\u003e — ensuring the filter unit is not only functional but achieving the \u003cem\u003eintended level of control at the hood\u003c\/em\u003e.\u003c\/p\u003e","brand":"LEV Academy","offers":[{"title":"Default Title","offer_id":52699466170707,"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_222445.png?v=1777929984"},{"product_id":"lev108-guide-on-reverse-jet-filters-copy","title":"LEV107 - Basic LEV maths (v1.4)","description":"\u003cp data-start=\"405\" data-end=\"567\"\u003eMathematics sits at the heart of every effective Local Exhaust Ventilation (LEV) system — yet it’s one of the areas that causes the most uncertainty in the field.\u003c\/p\u003e\n\u003cp data-start=\"569\" data-end=\"941\"\u003eFrom duct sizing and airflow calculations to understanding velocity, pressure, and density, LEV maths quietly determines whether a system \u003cstrong data-start=\"707\" data-end=\"728\"\u003econtrols exposure\u003c\/strong\u003e or merely looks like it should. And when the maths is misunderstood — or skipped altogether — the consequences show up quickly: poor capture, unstable systems, failed examinations, and unnecessary risk to health.\u003c\/p\u003e\n\u003cp data-start=\"943\" data-end=\"994\"\u003eLEV107: Basic LEV Maths was written to change that.\u003c\/p\u003e\n\u003cp data-start=\"996\" data-end=\"1252\"\u003eThis guide strips LEV mathematics back to its engineering fundamentals, explaining not just \u003cem data-start=\"1088\" data-end=\"1094\"\u003ewhat\u003c\/em\u003e to calculate, but \u003cem data-start=\"1113\" data-end=\"1118\"\u003ewhy\u003c\/em\u003e those calculations matter and \u003cem data-start=\"1149\" data-end=\"1156\"\u003ewhere\u003c\/em\u003e they apply during design, testing, and COSHH Regulation 9 Thorough Examination and Test (TExT).\u003c\/p\u003e\n\u003chr data-start=\"1254\" data-end=\"1257\"\u003e\n\u003ch2 data-start=\"1259\" data-end=\"1314\"\u003eA Practical Engineering Guide — Not a Maths Textbook\u003c\/h2\u003e\n\u003cp data-start=\"1316\" data-end=\"1383\"\u003eLEV107 is not academic maths and it’s not theory for theory’s sake.\u003c\/p\u003e\n\u003cp data-start=\"1385\" data-end=\"1552\"\u003eIt’s a \u003cstrong data-start=\"1392\" data-end=\"1441\"\u003efield-focused, metric-based engineering guide\u003c\/strong\u003e, written specifically for LEV practitioners who need to apply calculations confidently during real-world work.\u003c\/p\u003e\n\u003cp data-start=\"1554\" data-end=\"1622\"\u003eInside, you’ll find clear explanations and worked examples covering:\u003c\/p\u003e\n\u003cul data-start=\"1624\" data-end=\"2088\"\u003e\n\u003cli data-start=\"1624\" data-end=\"1685\"\u003e\n\u003cp data-start=\"1626\" data-end=\"1685\"\u003eMathematical terms used in LEV — explained without jargon\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1686\" data-end=\"1738\"\u003e\n\u003cp data-start=\"1688\" data-end=\"1738\"\u003eWorking correctly in metres (and why it matters)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1739\" data-end=\"1776\"\u003e\n\u003cp data-start=\"1741\" data-end=\"1776\"\u003eCircles, areas, and duct geometry\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1777\" data-end=\"1816\"\u003e\n\u003cp data-start=\"1779\" data-end=\"1816\"\u003eCalculating duct diameter from area\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1817\" data-end=\"1858\"\u003e\n\u003cp data-start=\"1819\" data-end=\"1858\"\u003eThe Velocity–Volume–Area relationship\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1859\" data-end=\"1913\"\u003e\n\u003cp data-start=\"1861\" data-end=\"1913\"\u003eStatic, velocity, and total pressure relationships\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1914\" data-end=\"1952\"\u003e\n\u003cp data-start=\"1916\" data-end=\"1952\"\u003eVelocity pressure and air velocity\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1953\" data-end=\"2005\"\u003e\n\u003cp data-start=\"1955\" data-end=\"2005\"\u003eStandard and non-standard air density conditions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2006\" data-end=\"2038\"\u003e\n\u003cp data-start=\"2008\" data-end=\"2038\"\u003ePractical correction factors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2039\" data-end=\"2088\"\u003e\n\u003cp data-start=\"2041\" data-end=\"2088\"\u003eCommon conversion factors used in LEV testing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2090\" data-end=\"2235\"\u003eEach section builds logically, helping you understand how individual calculations link together to form a complete picture of system performance.\u003c\/p\u003e\n\u003chr data-start=\"2237\" data-end=\"2240\"\u003e\n\u003ch2 data-start=\"2242\" data-end=\"2266\"\u003eWhy LEV Maths Matters\u003c\/h2\u003e\n\u003cp data-start=\"2268\" data-end=\"2345\"\u003eLEV systems don’t fail randomly — they fail because the numbers don’t add up.\u003c\/p\u003e\n\u003cp data-start=\"2347\" data-end=\"2435\"\u003eCommon issues seen during TExT often trace back to basic mathematical misunderstandings:\u003c\/p\u003e\n\u003cul data-start=\"2437\" data-end=\"2757\"\u003e\n\u003cli data-start=\"2437\" data-end=\"2508\"\u003e\n\u003cp data-start=\"2439\" data-end=\"2508\"\u003eDuct velocities that look acceptable but are calculated incorrectly\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2509\" data-end=\"2563\"\u003e\n\u003cp data-start=\"2511\" data-end=\"2563\"\u003eFlowrates that don’t align with hood design intent\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2564\" data-end=\"2633\"\u003e\n\u003cp data-start=\"2566\" data-end=\"2633\"\u003ePressure readings that are misinterpreted or compared incorrectly\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2634\" data-end=\"2693\"\u003e\n\u003cp data-start=\"2636\" data-end=\"2693\"\u003eHot air systems assessed using standard air assumptions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2694\" data-end=\"2757\"\u003e\n\u003cp data-start=\"2696\" data-end=\"2757\"\u003eFan performance judged without understanding total pressure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2759\" data-end=\"2937\"\u003eLEV107 helps practitioners recognise these issues early, giving you the confidence to question results, validate performance, and justify your conclusions clearly and defensibly.\u003c\/p\u003e\n\u003chr data-start=\"2939\" data-end=\"2942\"\u003e\n\u003ch2 data-start=\"2944\" data-end=\"2968\"\u003eWho This Guide Is For\u003c\/h2\u003e\n\u003cp data-start=\"2970\" data-end=\"2990\"\u003eLEV107 is ideal for:\u003c\/p\u003e\n\u003cul data-start=\"2992\" data-end=\"3169\"\u003e\n\u003cli data-start=\"2992\" data-end=\"3021\"\u003e\n\u003cp data-start=\"2994\" data-end=\"3021\"\u003eLEV engineers and testers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3022\" data-end=\"3049\"\u003e\n\u003cp data-start=\"3024\" data-end=\"3049\"\u003eOccupational hygienists\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3050\" data-end=\"3078\"\u003e\n\u003cp data-start=\"3052\" data-end=\"3078\"\u003eDesigners and installers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3079\" data-end=\"3108\"\u003e\n\u003cp data-start=\"3081\" data-end=\"3108\"\u003eTrainee LEV practitioners\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3109\" data-end=\"3169\"\u003e\n\u003cp data-start=\"3111\" data-end=\"3169\"\u003eAnyone involved in COSHH compliance and exposure control\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3171\" data-end=\"3342\"\u003eWhether you’re new to LEV or looking to strengthen your technical foundation, this guide provides the maths you actually use — explained in a way that finally makes sense.\u003c\/p\u003e\n\u003chr data-start=\"3344\" data-end=\"3347\"\u003e\n\u003ch2 data-start=\"3349\" data-end=\"3367\"\u003eProduct Details\u003c\/h2\u003e\n\u003cul data-start=\"3369\" data-end=\"3609\"\u003e\n\u003cli data-start=\"3369\" data-end=\"3407\"\u003e\n\u003cp data-start=\"3371\" data-end=\"3407\"\u003e\u003cstrong data-start=\"3371\" data-end=\"3381\"\u003eTitle:\u003c\/strong\u003e LEV107: Basic LEV Maths\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3408\" data-end=\"3438\"\u003e\n\u003cp data-start=\"3410\" data-end=\"3438\"\u003e\u003cstrong data-start=\"3410\" data-end=\"3422\"\u003eEdition:\u003c\/strong\u003e Third Edition\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3439\" data-end=\"3474\"\u003e\n\u003cp data-start=\"3441\" data-end=\"3474\"\u003e\u003cstrong data-start=\"3441\" data-end=\"3452\"\u003eFormat:\u003c\/strong\u003e Digital guide (PDF)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3475\" data-end=\"3518\"\u003e\n\u003cp data-start=\"3477\" data-end=\"3518\"\u003e\u003cstrong data-start=\"3477\" data-end=\"3487\"\u003eFocus:\u003c\/strong\u003e Metric-based LEV mathematics\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3519\" data-end=\"3550\"\u003e\n\u003cp data-start=\"3521\" data-end=\"3550\"\u003e\u003cstrong data-start=\"3521\" data-end=\"3530\"\u003eISBN:\u003c\/strong\u003e 978-1-9192558-0-4\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3551\" data-end=\"3585\"\u003e\n\u003cp data-start=\"3553\" data-end=\"3585\"\u003e\u003cstrong data-start=\"3553\" data-end=\"3564\"\u003eAuthor:\u003c\/strong\u003e Louise Davies Wood\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3586\" data-end=\"3609\"\u003e\n\u003cp data-start=\"3588\" data-end=\"3609\"\u003e\u003cstrong data-start=\"3588\" data-end=\"3602\"\u003ePublished:\u003c\/strong\u003e 2025\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LEV Academy","offers":[{"title":"Default Title","offer_id":52699537441107,"sku":null,"price":15.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/3313\/8771\/files\/Screenshot_2026-01-29_121226.png?v=1769688774"},{"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"},{"product_id":"lev108-guide-on-reverse-jet-filters-copy-copy-copy","title":"LEV105 Understanding Masterbatch","description":"\u003ch3 data-start=\"290\" data-end=\"353\"\u003eA Local Exhaust Ventilation (LEV)–Focused Guidance Document\u003c\/h3\u003e\n\u003cp data-start=\"355\" data-end=\"526\"\u003eMasterbatch production underpins much of the modern plastics industry — yet it remains one of the most \u003cstrong data-start=\"458\" data-end=\"503\"\u003ecomplex and underestimated exposure risks\u003c\/strong\u003e in polymer processing.\u003c\/p\u003e\n\u003cp data-start=\"528\" data-end=\"899\"\u003eFrom fine polymer powders and hazardous additives to static electricity, combustible dust, fumes, and extruder fires, masterbatch manufacture presents a unique combination of \u003cstrong data-start=\"703\" data-end=\"747\"\u003erespiratory, fire, and explosion hazards\u003c\/strong\u003e. Too often, these risks are managed reactively, with LEV systems added without fully understanding the materials, processes, or failure modes involved.\u003c\/p\u003e\n\u003cp data-start=\"901\" data-end=\"965\"\u003eLEV105: Masterbatch and Control was written to address that gap.\u003c\/p\u003e\n\u003cp data-start=\"967\" data-end=\"1235\"\u003eThis guide provides a clear, structured overview of masterbatch production \u003cstrong data-start=\"1042\" data-end=\"1091\"\u003ethrough the lens of Local Exhaust Ventilation\u003c\/strong\u003e, focusing on how exposure is generated, how control is lost, and how effective engineering solutions can be designed, assessed, and maintained.\u003c\/p\u003e\n\u003chr data-start=\"1237\" data-end=\"1240\"\u003e\n\u003ch2 data-start=\"1242\" data-end=\"1286\"\u003eA Practical, LEV-Biased Engineering Guide\u003c\/h2\u003e\n\u003cp data-start=\"1288\" data-end=\"1357\"\u003eLEV105 is not a chemistry textbook and not generic plastics guidance.\u003c\/p\u003e\n\u003cp data-start=\"1359\" data-end=\"1524\"\u003eIt is a \u003cstrong data-start=\"1367\" data-end=\"1400\"\u003epractitioner-focused document\u003c\/strong\u003e, written for those responsible for designing, inspecting, testing, or relying upon LEV systems in masterbatch environments.\u003c\/p\u003e\n\u003cp data-start=\"1526\" data-end=\"1748\"\u003eThe guide walks through the full production process — from raw material handling to extrusion — highlighting where airborne dusts, fumes, vapours, and secondary exposures arise, and how LEV should be applied at each stage.\u003c\/p\u003e\n\u003cp data-start=\"1750\" data-end=\"1769\"\u003eKey topics include:\u003c\/p\u003e\n\u003cul data-start=\"1771\" data-end=\"2405\"\u003e\n\u003cli data-start=\"1771\" data-end=\"1825\"\u003e\n\u003cp data-start=\"1773\" data-end=\"1825\"\u003eWhat masterbatch is and how it is used in industry\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1826\" data-end=\"1890\"\u003e\n\u003cp data-start=\"1828\" data-end=\"1890\"\u003eTypes of masterbatch (colour, additive, filler, combination)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1891\" data-end=\"1957\"\u003e\n\u003cp data-start=\"1893\" data-end=\"1957\"\u003eProperties of common masterbatch additives and processing aids\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1958\" data-end=\"2024\"\u003e\n\u003cp data-start=\"1960\" data-end=\"2024\"\u003eTypical hazardous substances used (LDPE, LLDPE, PP, additives)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2025\" data-end=\"2074\"\u003e\n\u003cp data-start=\"2027\" data-end=\"2074\"\u003eCombustible dust and static electricity risks\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2075\" data-end=\"2145\"\u003e\n\u003cp data-start=\"2077\" data-end=\"2145\"\u003eHealth effects of polymer dusts, fumes, and decomposition products\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2146\" data-end=\"2206\"\u003e\n\u003cp data-start=\"2148\" data-end=\"2206\"\u003eMasterbatch manufacturing processes and extrusion stages\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2207\" data-end=\"2285\"\u003e\n\u003cp data-start=\"2209\" data-end=\"2285\"\u003eHigh-risk activities: weighing, mixing, tipping, feeding, and bag handling\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2286\" data-end=\"2337\"\u003e\n\u003cp data-start=\"2288\" data-end=\"2337\"\u003eDust and fume release points along the extruder\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2338\" data-end=\"2405\"\u003e\n\u003cp data-start=\"2340\" data-end=\"2405\"\u003eCommon real-world failures of LEV systems in masterbatch plants\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2407\" data-end=\"2538\"\u003eThroughout, the emphasis remains on \u003cstrong data-start=\"2443\" data-end=\"2470\"\u003ehow contaminants behave\u003c\/strong\u003e, and what that means for capture, containment, and worker exposure.\u003c\/p\u003e\n\u003chr data-start=\"2540\" data-end=\"2543\"\u003e\n\u003ch2 data-start=\"2545\" data-end=\"2585\"\u003eLEV Systems in Masterbatch Production\u003c\/h2\u003e\n\u003cp data-start=\"2587\" data-end=\"2751\"\u003eMasterbatch environments place heavy demands on extraction systems. Fine powders, greasy vapours, heat, and static all influence system performance and reliability.\u003c\/p\u003e\n\u003cp data-start=\"2753\" data-end=\"2831\"\u003eLEV105 examines the two most common filtration approaches used in this sector:\u003c\/p\u003e\n\u003cul data-start=\"2833\" data-end=\"2895\"\u003e\n\u003cli data-start=\"2833\" data-end=\"2866\"\u003e\n\u003cp data-start=\"2835\" data-end=\"2866\"\u003eMechanical shake filter units\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2867\" data-end=\"2895\"\u003e\n\u003cp data-start=\"2869\" data-end=\"2895\"\u003eReverse jet filter units\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2897\" data-end=\"2970\"\u003eThe guide compares their practical advantages and limitations, including:\u003c\/p\u003e\n\u003cul data-start=\"2972\" data-end=\"3158\"\u003e\n\u003cli data-start=\"2972\" data-end=\"3016\"\u003e\n\u003cp data-start=\"2974\" data-end=\"3016\"\u003eImpact on airflow and capture efficiency\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3017\" data-end=\"3058\"\u003e\n\u003cp data-start=\"3019\" data-end=\"3058\"\u003eDowntime and maintenance requirements\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3059\" data-end=\"3103\"\u003e\n\u003cp data-start=\"3061\" data-end=\"3103\"\u003eFilter blinding and volumetric flow loss\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3104\" data-end=\"3158\"\u003e\n\u003cp data-start=\"3106\" data-end=\"3158\"\u003eSuitability for continuous production environments\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3160\" data-end=\"3317\"\u003eIt also highlights the often-overlooked need to \u003cstrong data-start=\"3208\" data-end=\"3245\"\u003eseparate dust and fume extraction\u003c\/strong\u003e, particularly where hot, greasy vapours risk blinding dry dust filters.\u003c\/p\u003e\n\u003chr data-start=\"3319\" data-end=\"3322\"\u003e\n\u003ch2 data-start=\"3324\" data-end=\"3354\"\u003eAchieving Effective Control\u003c\/h2\u003e\n\u003cp data-start=\"3356\" data-end=\"3467\"\u003eLEV105 sets out a clear, structured approach to control, aligned with COSHH and HSG258 expectations, including:\u003c\/p\u003e\n\u003cul data-start=\"3469\" data-end=\"3905\"\u003e\n\u003cli data-start=\"3469\" data-end=\"3529\"\u003e\n\u003cp data-start=\"3471\" data-end=\"3529\"\u003eComprehensive risk assessment for masterbatch operations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3530\" data-end=\"3567\"\u003e\n\u003cp data-start=\"3532\" data-end=\"3567\"\u003eApplying the hierarchy of control\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3568\" data-end=\"3624\"\u003e\n\u003cp data-start=\"3570\" data-end=\"3624\"\u003eDesigning partial enclosures for weighing and mixing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3625\" data-end=\"3680\"\u003e\n\u003cp data-start=\"3627\" data-end=\"3680\"\u003eCorrect hood selection and positioning at extruders\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3681\" data-end=\"3732\"\u003e\n\u003cp data-start=\"3683\" data-end=\"3732\"\u003eManaging waste sacks and secondary dust release\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3733\" data-end=\"3798\"\u003e\n\u003cp data-start=\"3735\" data-end=\"3798\"\u003eMonitoring performance through airflow indicators and testing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3799\" data-end=\"3851\"\u003e\n\u003cp data-start=\"3801\" data-end=\"3851\"\u003eMaintenance, cleaning, and access considerations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3852\" data-end=\"3905\"\u003e\n\u003cp data-start=\"3854\" data-end=\"3905\"\u003eTraining, RPE integration, and emergency planning\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3907\" data-end=\"4079\"\u003eThe guidance is written to support \u003cstrong data-start=\"3942\" data-end=\"3972\"\u003edefensible decision-making\u003c\/strong\u003e during COSHH Regulation 9 Thorough Examination and Test (TExT), as well as day-to-day operational control.\u003c\/p\u003e\n\u003chr data-start=\"4081\" data-end=\"4084\"\u003e\n\u003ch2 data-start=\"4086\" data-end=\"4105\"\u003eWhy This Matters\u003c\/h2\u003e\n\u003cp data-start=\"4107\" data-end=\"4179\"\u003eIn masterbatch production, small failures can have serious consequences:\u003c\/p\u003e\n\u003cul data-start=\"4181\" data-end=\"4479\"\u003e\n\u003cli data-start=\"4181\" data-end=\"4236\"\u003e\n\u003cp data-start=\"4183\" data-end=\"4236\"\u003eFine polymer dusts can form combustible atmospheres\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4237\" data-end=\"4285\"\u003e\n\u003cp data-start=\"4239\" data-end=\"4285\"\u003eStatic discharge can ignite accumulated dust\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4286\" data-end=\"4354\"\u003e\n\u003cp data-start=\"4288\" data-end=\"4354\"\u003ePoor extraction allows widespread contamination of the workspace\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4355\" data-end=\"4422\"\u003e\n\u003cp data-start=\"4357\" data-end=\"4422\"\u003eExtruder fires introduce smoke and toxic decomposition products\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4423\" data-end=\"4479\"\u003e\n\u003cp data-start=\"4425\" data-end=\"4479\"\u003eInadequate LEV leads to chronic respiratory exposure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4481\" data-end=\"4663\"\u003eLEV105 helps practitioners recognise these risks early, understand their root causes, and implement proportionate, effective controls — protecting workers, processes, and compliance.\u003c\/p\u003e\n\u003chr data-start=\"4665\" data-end=\"4668\"\u003e\n\u003ch2 data-start=\"4670\" data-end=\"4694\"\u003eWho This Guide Is For\u003c\/h2\u003e\n\u003cp data-start=\"4696\" data-end=\"4728\"\u003eLEV105 is essential reading for:\u003c\/p\u003e\n\u003cul data-start=\"4730\" data-end=\"4975\"\u003e\n\u003cli data-start=\"4730\" data-end=\"4759\"\u003e\n\u003cp data-start=\"4732\" data-end=\"4759\"\u003eLEV engineers and testers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4760\" data-end=\"4805\"\u003e\n\u003cp data-start=\"4762\" data-end=\"4805\"\u003ePlastics and polymer processing engineers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4806\" data-end=\"4833\"\u003e\n\u003cp data-start=\"4808\" data-end=\"4833\"\u003eOccupational hygienists\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4834\" data-end=\"4867\"\u003e\n\u003cp data-start=\"4836\" data-end=\"4867\"\u003eHealth \u0026amp; safety professionals\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4868\" data-end=\"4911\"\u003e\n\u003cp data-start=\"4870\" data-end=\"4911\"\u003eDesigners, installers, and duty holders\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4912\" data-end=\"4975\"\u003e\n\u003cp data-start=\"4914\" data-end=\"4975\"\u003eRegulators and inspectors working in plastics manufacturing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4977\" data-end=\"5116\"\u003eIf you are responsible for exposure control in a masterbatch environment, this guide provides the practical insight needed to get it right.\u003c\/p\u003e\n\u003chr data-start=\"5118\" data-end=\"5121\"\u003e\n\u003ch2 data-start=\"5123\" data-end=\"5141\"\u003eProduct Details\u003c\/h2\u003e\n\u003cul data-start=\"5143\" data-end=\"5491\"\u003e\n\u003cli data-start=\"5143\" data-end=\"5211\"\u003e\n\u003cp data-start=\"5145\" data-end=\"5211\"\u003e\u003cstrong data-start=\"5145\" data-end=\"5155\"\u003eTitle:\u003c\/strong\u003e LEV105: Masterbatch and Control (LEV-Biased Guidance)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5212\" data-end=\"5256\"\u003e\n\u003cp data-start=\"5214\" data-end=\"5256\"\u003e\u003cstrong data-start=\"5214\" data-end=\"5225\"\u003eSeries:\u003c\/strong\u003e LEV Academy Technical Guides\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5257\" data-end=\"5292\"\u003e\n\u003cp data-start=\"5259\" data-end=\"5292\"\u003e\u003cstrong data-start=\"5259\" data-end=\"5270\"\u003eFormat:\u003c\/strong\u003e Digital guide (PDF)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5293\" data-end=\"5369\"\u003e\n\u003cp data-start=\"5295\" data-end=\"5369\"\u003e\u003cstrong data-start=\"5295\" data-end=\"5305\"\u003eFocus:\u003c\/strong\u003e LEV design, assessment, and control in masterbatch production\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5370\" data-end=\"5404\"\u003e\n\u003cp data-start=\"5372\" data-end=\"5404\"\u003e\u003cstrong data-start=\"5372\" data-end=\"5383\"\u003eAuthor:\u003c\/strong\u003e Louise Davies Wood\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5405\" data-end=\"5437\"\u003e\n\u003cp data-start=\"5407\" data-end=\"5437\"\u003e\u003cstrong data-start=\"5407\" data-end=\"5421\"\u003ePublished:\u003c\/strong\u003e December 2024\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5438\" data-end=\"5491\"\u003e\n\u003cp data-start=\"5440\" data-end=\"5491\"\u003e\u003cstrong data-start=\"5440\" data-end=\"5463\"\u003eRegulatory Context:\u003c\/strong\u003e COSHH Regulations, HSG258\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LEV Academy","offers":[{"title":"Default Title","offer_id":52699539636563,"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_222522.png?v=1777929940"},{"product_id":"lev108-guide-on-reverse-jet-filters-copy-1","title":"LEV102: Powder Coating and LEV Control","description":"\u003ch3 data-start=\"207\" data-end=\"255\"\u003eA Professional Guide to Recommended Practice\u003c\/h3\u003e\n\u003cp data-start=\"257\" data-end=\"504\"\u003ePowder coating booths are a familiar sight across industry — from dedicated coating facilities and steel fabrication shops to fastener production and small batch finishing lines. They are often assumed to be \u003cem data-start=\"465\" data-end=\"481\"\u003eself-contained\u003c\/em\u003e and \u003cem data-start=\"486\" data-end=\"503\"\u003ewell controlled\u003c\/em\u003e.\u003c\/p\u003e\n\u003cp data-start=\"506\" data-end=\"735\"\u003eIn reality, powder coating processes frequently present \u003cstrong data-start=\"562\" data-end=\"594\"\u003esignificant inhalation risks\u003c\/strong\u003e, secondary contamination issues, and LEV systems that look effective on paper but fail to protect the operator’s breathing zone in practice.\u003c\/p\u003e\n\u003cp data-start=\"737\" data-end=\"815\"\u003eLEV102: Powder Coating and LEV Control was written to address that disconnect.\u003c\/p\u003e\n\u003cp data-start=\"817\" data-end=\"1114\"\u003eThis guide focuses specifically on \u003cstrong data-start=\"852\" data-end=\"937\"\u003eLocal Exhaust Ventilation (LEV) systems associated with powder coating operations\u003c\/strong\u003e, providing practical, field-based guidance on how to assess them properly under \u003cstrong data-start=\"1018\" data-end=\"1040\"\u003eCOSHH Regulation 9\u003c\/strong\u003e, and how to recognise when “compliance” does not equal effective control.\u003c\/p\u003e\n\u003chr data-start=\"1116\" data-end=\"1119\"\u003e\n\u003ch2 data-start=\"1121\" data-end=\"1167\"\u003eA Practical Reg 9–Focused Engineering Guide\u003c\/h2\u003e\n\u003cp data-start=\"1169\" data-end=\"1243\"\u003eLEV102 is not a coating manual and not a generic health \u0026amp; safety overview.\u003c\/p\u003e\n\u003cp data-start=\"1245\" data-end=\"1498\"\u003eIt is a \u003cstrong data-start=\"1253\" data-end=\"1308\"\u003eprofessional LEV testing and exposure control guide\u003c\/strong\u003e, written for competent LEV testers, engineers, duty holders, and health \u0026amp; safety practitioners who need to make defensible pass\/fail decisions during a Thorough Examination and Test (TExT).\u003c\/p\u003e\n\u003cp data-start=\"1500\" data-end=\"1667\"\u003eThe guide walks through the powder coating process step-by-step, identifying where exposure arises, how control is intended to work, and where it commonly breaks down.\u003c\/p\u003e\n\u003cp data-start=\"1669\" data-end=\"1695\"\u003eKey areas covered include:\u003c\/p\u003e\n\u003cul data-start=\"1697\" data-end=\"2220\"\u003e\n\u003cli data-start=\"1697\" data-end=\"1754\"\u003e\n\u003cp data-start=\"1699\" data-end=\"1754\"\u003eOverview of powder coating processes and booth design\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1755\" data-end=\"1812\"\u003e\n\u003cp data-start=\"1757\" data-end=\"1812\"\u003eHealth hazards associated with powder coating powders\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1813\" data-end=\"1889\"\u003e\n\u003cp data-start=\"1815\" data-end=\"1889\"\u003eClassified substances (TGIC, lead chromates, TMA) and their implications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1890\" data-end=\"1949\"\u003e\n\u003cp data-start=\"1892\" data-end=\"1949\"\u003eEH40 general dust exposure limits and their limitations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1950\" data-end=\"2018\"\u003e\n\u003cp data-start=\"1952\" data-end=\"2018\"\u003eProcess variability, overspray, and real-world operator movement\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2019\" data-end=\"2087\"\u003e\n\u003cp data-start=\"2021\" data-end=\"2087\"\u003eSecondary exposure from clothing, RPE, and housekeeping failures\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2088\" data-end=\"2151\"\u003e\n\u003cp data-start=\"2090\" data-end=\"2151\"\u003eCOSHH Regulations as applied specifically to powder coating\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2152\" data-end=\"2220\"\u003e\n\u003cp data-start=\"2154\" data-end=\"2220\"\u003eThe role of LEV within the client’s Regulation 6 risk assessment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2222\" data-end=\"2225\"\u003e\n\u003ch2 data-start=\"2227\" data-end=\"2270\"\u003eControl Measures — What Works in Reality\u003c\/h2\u003e\n\u003cp data-start=\"2272\" data-end=\"2317\"\u003eLEV102 takes a realistic approach to control.\u003c\/p\u003e\n\u003cp data-start=\"2319\" data-end=\"2577\"\u003eWhile LEV is the \u003cstrong data-start=\"2336\" data-end=\"2367\"\u003eprimary engineering control\u003c\/strong\u003e, the guide clearly explains why \u003cstrong data-start=\"2400\" data-end=\"2434\"\u003eLEV alone is rarely sufficient\u003c\/strong\u003e in powder coating operations — particularly where operators must enter enclosures, spray irregular objects, or work close to open booth faces.\u003c\/p\u003e\n\u003cp data-start=\"2579\" data-end=\"2598\"\u003eThe guide examines:\u003c\/p\u003e\n\u003cul data-start=\"2600\" data-end=\"2929\"\u003e\n\u003cli data-start=\"2600\" data-end=\"2658\"\u003e\n\u003cp data-start=\"2602\" data-end=\"2658\"\u003ePartial enclosure spray booths and airflow limitations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2659\" data-end=\"2715\"\u003e\n\u003cp data-start=\"2661\" data-end=\"2715\"\u003eAerodynamic dead zones caused by the operator’s body\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2716\" data-end=\"2765\"\u003e\n\u003cp data-start=\"2718\" data-end=\"2765\"\u003eOff-angle spraying and capture inefficiencies\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2766\" data-end=\"2825\"\u003e\n\u003cp data-start=\"2768\" data-end=\"2825\"\u003ePowder recovery systems, cyclones, and filtration units\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2826\" data-end=\"2874\"\u003e\n\u003cp data-start=\"2828\" data-end=\"2874\"\u003eMechanical shake vs reverse jet filter units\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2875\" data-end=\"2929\"\u003e\n\u003cp data-start=\"2877\" data-end=\"2929\"\u003eRecirculating air systems and failure consequences\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2931\" data-end=\"3080\"\u003eIt also provides clear guidance on \u003cstrong data-start=\"2966\" data-end=\"2999\"\u003ewhen and why RPE is mandatory\u003c\/strong\u003e, and why certain commonly used options (e.g. half masks) often fail in practice.\u003c\/p\u003e\n\u003chr data-start=\"3082\" data-end=\"3085\"\u003e\n\u003ch2 data-start=\"3087\" data-end=\"3149\"\u003eLEV Thorough Examination \u0026amp; Test (TExT) – COSHH Regulation 9\u003c\/h2\u003e\n\u003cp data-start=\"3151\" data-end=\"3257\"\u003eA central focus of LEV102 is \u003cstrong data-start=\"3180\" data-end=\"3230\"\u003ehow to carry out a robust, defensible LEV TExT\u003c\/strong\u003e on powder coating systems.\u003c\/p\u003e\n\u003cp data-start=\"3259\" data-end=\"3346\"\u003eThe guide sets out both \u003cstrong data-start=\"3283\" data-end=\"3334\"\u003equantitative and qualitative assessment methods\u003c\/strong\u003e, including:\u003c\/p\u003e\n\u003ch3 data-start=\"3348\" data-end=\"3375\"\u003eQuantitative Assessment\u003c\/h3\u003e\n\u003cul data-start=\"3376\" data-end=\"3789\"\u003e\n\u003cli data-start=\"3376\" data-end=\"3426\"\u003e\n\u003cp data-start=\"3378\" data-end=\"3426\"\u003eStatic pressure measurement and interpretation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3427\" data-end=\"3488\"\u003e\n\u003cp data-start=\"3429\" data-end=\"3488\"\u003eAir velocity measurement using pitot tubes and manometers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3489\" data-end=\"3562\"\u003e\n\u003cp data-start=\"3491\" data-end=\"3562\"\u003eDuct traverse methods (equal section, log-Tchebycheff, centre method)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3563\" data-end=\"3611\"\u003e\n\u003cp data-start=\"3565\" data-end=\"3611\"\u003eFace velocity measurements at booth openings\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3612\" data-end=\"3661\"\u003e\n\u003cp data-start=\"3614\" data-end=\"3661\"\u003eConservation of mass checks across the system\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3662\" data-end=\"3731\"\u003e\n\u003cp data-start=\"3664\" data-end=\"3731\"\u003eTransport velocity requirements for fine powders (HSG258 aligned)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3732\" data-end=\"3789\"\u003e\n\u003cp data-start=\"3734\" data-end=\"3789\"\u003eDifferential pressure as a filter condition indicator\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-start=\"3791\" data-end=\"3817\"\u003eQualitative Assessment\u003c\/h3\u003e\n\u003cul data-start=\"3818\" data-end=\"4136\"\u003e\n\u003cli data-start=\"3818\" data-end=\"3852\"\u003e\n\u003cp data-start=\"3820\" data-end=\"3852\"\u003eHood condition and suitability\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3853\" data-end=\"3895\"\u003e\n\u003cp data-start=\"3855\" data-end=\"3895\"\u003eSmoke testing and capture verification\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3896\" data-end=\"3943\"\u003e\n\u003cp data-start=\"3898\" data-end=\"3943\"\u003eTyndall effect observations during spraying\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3944\" data-end=\"3985\"\u003e\n\u003cp data-start=\"3946\" data-end=\"3985\"\u003eDuct condition and leakage indicators\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"3986\" data-end=\"4039\"\u003e\n\u003cp data-start=\"3988\" data-end=\"4039\"\u003eFilter unit inspection (clean side vs dirty side)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4040\" data-end=\"4099\"\u003e\n\u003cp data-start=\"4042\" data-end=\"4099\"\u003eMechanical shake and reverse jet cleaning effectiveness\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4100\" data-end=\"4136\"\u003e\n\u003cp data-start=\"4102\" data-end=\"4136\"\u003eRecirculated air risk assessment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4138\" data-end=\"4310\"\u003eThe guide emphasises that \u003cstrong data-start=\"4164\" data-end=\"4212\"\u003epassing a system is a professional judgement\u003c\/strong\u003e, based not just on numbers — but on whether the operator’s breathing zone is genuinely protected.\u003c\/p\u003e\n\u003chr data-start=\"4312\" data-end=\"4315\"\u003e\n\u003ch2 data-start=\"4317\" data-end=\"4354\"\u003eSupporting Tools for Practitioners\u003c\/h2\u003e\n\u003cp data-start=\"4356\" data-end=\"4421\"\u003eTo support consistent, high-quality assessments, LEV102 includes:\u003c\/p\u003e\n\u003cul data-start=\"4423\" data-end=\"4760\"\u003e\n\u003cli data-start=\"4423\" data-end=\"4482\"\u003e\n\u003cp data-start=\"4425\" data-end=\"4482\"\u003eExample schematic layouts and test point identification\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4483\" data-end=\"4530\"\u003e\n\u003cp data-start=\"4485\" data-end=\"4530\"\u003eA simple LEV \/ control logbook (Appendix A)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4531\" data-end=\"4613\"\u003e\n\u003cp data-start=\"4533\" data-end=\"4613\"\u003eRPE selection and inspection checklist specific to powder coating (Appendix B)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4614\" data-end=\"4675\"\u003e\n\u003cp data-start=\"4616\" data-end=\"4675\"\u003ePractical housekeeping and contamination control guidance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4676\" data-end=\"4723\"\u003e\n\u003cp data-start=\"4678\" data-end=\"4723\"\u003eOperator behaviour and usage considerations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4724\" data-end=\"4760\"\u003e\n\u003cp data-start=\"4726\" data-end=\"4760\"\u003eClear documentation expectations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"4762\" data-end=\"4765\"\u003e\n\u003ch2 data-start=\"4767\" data-end=\"4786\"\u003eWhy This Matters\u003c\/h2\u003e\n\u003cp data-start=\"4788\" data-end=\"4847\"\u003ePowder coating dust may appear benign — but it can include:\u003c\/p\u003e\n\u003cul data-start=\"4849\" data-end=\"5003\"\u003e\n\u003cli data-start=\"4849\" data-end=\"4899\"\u003e\n\u003cp data-start=\"4851\" data-end=\"4899\"\u003eMutagens, carcinogens, and reproductive toxins\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4900\" data-end=\"4942\"\u003e\n\u003cp data-start=\"4902\" data-end=\"4942\"\u003eRespiratory sensitisers and asthmagens\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"4943\" data-end=\"5003\"\u003e\n\u003cp data-start=\"4945\" data-end=\"5003\"\u003eFine particulate that easily bypasses poor capture zones\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"5005\" data-end=\"5069\"\u003eWhen LEV systems are poorly assessed or incorrectly relied upon:\u003c\/p\u003e\n\u003cul data-start=\"5071\" data-end=\"5277\"\u003e\n\u003cli data-start=\"5071\" data-end=\"5127\"\u003e\n\u003cp data-start=\"5073\" data-end=\"5127\"\u003eOperators inhale dust directly in the breathing zone\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5128\" data-end=\"5171\"\u003e\n\u003cp data-start=\"5130\" data-end=\"5171\"\u003ePowder spreads throughout the workplace\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5172\" data-end=\"5224\"\u003e\n\u003cp data-start=\"5174\" data-end=\"5224\"\u003eRPE is misused, damaged, or rendered ineffective\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5225\" data-end=\"5277\"\u003e\n\u003cp data-start=\"5227\" data-end=\"5277\"\u003eCOSHH compliance is assumed rather than achieved\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"5279\" data-end=\"5423\"\u003eLEV102 helps practitioners identify these failures early and apply \u003cstrong data-start=\"5346\" data-end=\"5393\"\u003erealistic, COSHH-aligned control strategies\u003c\/strong\u003e that actually protect health.\u003c\/p\u003e\n\u003chr data-start=\"5425\" data-end=\"5428\"\u003e\n\u003ch2 data-start=\"5430\" data-end=\"5454\"\u003eWho This Guide Is For\u003c\/h2\u003e\n\u003cp data-start=\"5456\" data-end=\"5488\"\u003eLEV102 is essential reading for:\u003c\/p\u003e\n\u003cul data-start=\"5490\" data-end=\"5698\"\u003e\n\u003cli data-start=\"5490\" data-end=\"5525\"\u003e\n\u003cp data-start=\"5492\" data-end=\"5525\"\u003eLEV engineers and Reg 9 testers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5526\" data-end=\"5553\"\u003e\n\u003cp data-start=\"5528\" data-end=\"5553\"\u003eOccupational hygienists\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5554\" data-end=\"5587\"\u003e\n\u003cp data-start=\"5556\" data-end=\"5587\"\u003eHealth \u0026amp; safety professionals\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5588\" data-end=\"5624\"\u003e\n\u003cp data-start=\"5590\" data-end=\"5624\"\u003ePowder coating facility managers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5625\" data-end=\"5668\"\u003e\n\u003cp data-start=\"5627\" data-end=\"5668\"\u003eDesigners, installers, and duty holders\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5669\" data-end=\"5698\"\u003e\n\u003cp data-start=\"5671\" data-end=\"5698\"\u003eRegulators and inspectors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"5700\" data-end=\"5905\"\u003eIf you are responsible for assessing, testing, specifying, or relying on LEV systems in powder coating operations, this guide gives you the practical insight needed to make confident, defensible decisions.\u003c\/p\u003e\n\u003chr data-start=\"5907\" data-end=\"5910\"\u003e\n\u003ch2 data-start=\"5912\" data-end=\"5930\"\u003eProduct Details\u003c\/h2\u003e\n\u003cul data-start=\"5932\" data-end=\"6336\"\u003e\n\u003cli data-start=\"5932\" data-end=\"5985\"\u003e\n\u003cp data-start=\"5934\" data-end=\"5985\"\u003e\u003cstrong data-start=\"5934\" data-end=\"5944\"\u003eTitle:\u003c\/strong\u003e LEV102: Powder Coating and LEV Control\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"5986\" data-end=\"6048\"\u003e\n\u003cp data-start=\"5988\" data-end=\"6048\"\u003e\u003cstrong data-start=\"5988\" data-end=\"6001\"\u003eSubtitle:\u003c\/strong\u003e A Professional Guide to Recommended Practice\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"6049\" data-end=\"6093\"\u003e\n\u003cp data-start=\"6051\" data-end=\"6093\"\u003e\u003cstrong data-start=\"6051\" data-end=\"6062\"\u003eSeries:\u003c\/strong\u003e LEV Academy Technical Guides\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"6094\" data-end=\"6129\"\u003e\n\u003cp data-start=\"6096\" data-end=\"6129\"\u003e\u003cstrong data-start=\"6096\" data-end=\"6107\"\u003eFormat:\u003c\/strong\u003e Digital guide (PDF)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"6130\" data-end=\"6217\"\u003e\n\u003cp data-start=\"6132\" data-end=\"6217\"\u003e\u003cstrong data-start=\"6132\" data-end=\"6142\"\u003eFocus:\u003c\/strong\u003e LEV assessment, COSHH compliance, and exposure control in powder coating\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"6218\" data-end=\"6252\"\u003e\n\u003cp data-start=\"6220\" data-end=\"6252\"\u003e\u003cstrong data-start=\"6220\" data-end=\"6231\"\u003eAuthor:\u003c\/strong\u003e Louise Davies Wood\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"6253\" data-end=\"6276\"\u003e\n\u003cp data-start=\"6255\" data-end=\"6276\"\u003e\u003cstrong data-start=\"6255\" data-end=\"6269\"\u003ePublished:\u003c\/strong\u003e 2025\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"6277\" data-end=\"6336\"\u003e\n\u003cp data-start=\"6279\" data-end=\"6336\"\u003e\u003cstrong data-start=\"6279\" data-end=\"6302\"\u003eRegulatory Context:\u003c\/strong\u003e COSHH Regulations, HSG258, EH40\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LEV Academy","offers":[{"title":"Default Title","offer_id":52699792245075,"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_220316.png?v=1777928637"},{"product_id":"lev108-guide-on-reverse-jet-filters-copy-copy-1","title":"LEV101 CNC Plasma Tables  LEV Application and Performance Appraisal","description":"\u003cp data-start=\"202\" data-end=\"471\"\u003eCNC plasma cutting is widely used across fabrication workshops, manufacturing plants, automotive restoration, education, and engineering environments. It is fast, accurate, and versatile — but it also generates significant quantities of hazardous airborne contaminants.\u003c\/p\u003e\n\u003cp data-start=\"473\" data-end=\"797\"\u003eDuring cutting, the plasma arc vaporises metal and surface coatings, producing a mixture of fine fume, metallic particulate, gases, and dust. Depending on the materials being processed, this may include hazardous substances such as hexavalent chromium, manganese, nickel compounds, zinc oxide, ozone, and oxides of nitrogen.\u003c\/p\u003e\n\u003cp data-start=\"799\" data-end=\"952\"\u003eWithout effective Local Exhaust Ventilation (LEV), these contaminants can quickly enter the operator’s breathing zone or contaminate the wider workplace.\u003c\/p\u003e\n\u003cp data-start=\"954\" data-end=\"1157\"\u003eDespite the widespread use of CNC plasma tables, the extraction systems serving them are often poorly understood, inconsistently maintained, or difficult to assess during a Thorough Examination and Test.\u003c\/p\u003e\n\u003cp data-start=\"1159\" data-end=\"1248\"\u003eThat’s exactly why I wrote \u003cstrong data-start=\"1186\" data-end=\"1247\"\u003eLEV101: CNC Plasma Cutting Tables – A Practical LEV Guide\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"1250\" data-end=\"1291\"\u003eA Practical Field Guide for LEV Engineers\u003c\/p\u003e\n\u003cp data-start=\"1293\" data-end=\"1466\"\u003eLEV101 has been written specifically for professionals carrying out \u003cstrong data-start=\"1361\" data-end=\"1420\"\u003eCOSHH Regulation 9 Thorough Examination and Test (TExT)\u003c\/strong\u003e inspections on CNC plasma extraction systems.\u003c\/p\u003e\n\u003cp data-start=\"1468\" data-end=\"1587\"\u003eThis guide focuses on the practical challenges commonly encountered when assessing plasma table LEV systems, including:\u003c\/p\u003e\n\u003cul data-start=\"1589\" data-end=\"2180\"\u003e\n\u003cli data-section-id=\"xrpu1b\" data-start=\"1589\" data-end=\"1664\"\u003eUnderstanding the CNC plasma cutting process and contaminant generation\u003c\/li\u003e\n\u003cli data-section-id=\"1voay7\" data-start=\"1665\" data-end=\"1764\"\u003eCommon plasma table configurations including open bed, enclosed, and partially enclosed systems\u003c\/li\u003e\n\u003cli data-section-id=\"ik9an2\" data-start=\"1765\" data-end=\"1873\"\u003eHood arrangements such as under-torch extraction, damper-controlled sections, and open under-bed designs\u003c\/li\u003e\n\u003cli data-section-id=\"1bfnr61\" data-start=\"1874\" data-end=\"1938\"\u003eReverse jet filtration systems and common performance issues\u003c\/li\u003e\n\u003cli data-section-id=\"yssrvv\" data-start=\"1939\" data-end=\"2007\"\u003eFire and explosion considerations associated with metallic dusts\u003c\/li\u003e\n\u003cli data-section-id=\"kwvd1v\" data-start=\"2008\" data-end=\"2107\"\u003ePractical airflow testing, duct traverses, differential pressure checks, and filter assessments\u003c\/li\u003e\n\u003cli data-section-id=\"1yvxdyt\" data-start=\"2108\" data-end=\"2180\"\u003eQualitative testing using tracer smoke and live cutting observations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2182\" data-end=\"2360\"\u003eUsing diagrams, schematics, and practical field-based guidance, the guide helps engineers understand not just how these systems are supposed to work — but how they commonly fail.\u003c\/p\u003e\n\u003cp data-start=\"2362\" data-end=\"2376\"\u003eWhy It Matters\u003c\/p\u003e\n\u003cp data-start=\"2378\" data-end=\"2482\"\u003eCNC plasma extraction systems can present unique challenges compared with more conventional LEV systems.\u003c\/p\u003e\n\u003cp data-start=\"2484\" data-end=\"2506\"\u003eCommon issues include:\u003c\/p\u003e\n\u003cul data-start=\"2508\" data-end=\"2800\"\u003e\n\u003cli data-section-id=\"u3jzkl\" data-start=\"2508\" data-end=\"2560\"\u003eblocked extraction zones beneath the cutting bed\u003c\/li\u003e\n\u003cli data-section-id=\"5fmpnw\" data-start=\"2561\" data-end=\"2591\"\u003efailed or sticking dampers\u003c\/li\u003e\n\u003cli data-section-id=\"1xzb20w\" data-start=\"2592\" data-end=\"2643\"\u003ecollapsed flexible hoses on under-torch systems\u003c\/li\u003e\n\u003cli data-section-id=\"1413cl2\" data-start=\"2644\" data-end=\"2703\"\u003einadequate transport velocities causing dust settlement\u003c\/li\u003e\n\u003cli data-section-id=\"12ta2t0\" data-start=\"2704\" data-end=\"2747\"\u003eoverloaded or failing cartridge filters\u003c\/li\u003e\n\u003cli data-section-id=\"f555p9\" data-start=\"2748\" data-end=\"2800\"\u003epoor airflow distribution across large bed areas\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2802\" data-end=\"2972\"\u003eEven where airflow readings initially appear acceptable, poor hood design, maintenance failures, or filtration issues can significantly reduce actual contaminant control.\u003c\/p\u003e\n\u003cp data-start=\"2974\" data-end=\"3229\"\u003eLEV101 helps practitioners approach plasma systems with greater confidence by providing practical guidance on what to inspect, what to measure, what commonly goes wrong, and how to determine whether the system is likely to adequately protect the operator.\u003c\/p\u003e\n\u003cp data-start=\"3231\" data-end=\"3464\"\u003eWhether you are an LEV engineer, occupational hygienist, consultant, or competent person involved in LEV testing, \u003cstrong data-start=\"3345\" data-end=\"3464\"\u003eLEV101 is designed to be a practical companion guide for assessing CNC plasma extraction systems in the real world.\u003c\/strong\u003e\u003c\/p\u003e","brand":"LEV Academy","offers":[{"title":"Default Title","offer_id":52699792802131,"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_220110.png?v=1777928506"},{"product_id":"lev109-on-torch-extraction-copy","title":"LEV110: Open bag filters – Wood Dust A companion Guide for LEV Practitioners","description":"\u003cp data-start=\"205\" data-end=\"273\"\u003e\u003cstrong data-start=\"205\" data-end=\"273\"\u003eOpen bag filters are common — but common does not mean suitable.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"275\" data-end=\"511\"\u003eAcross woodworking environments throughout the UK, open bag filter units remain one of the most frequently encountered dust extraction systems. They are inexpensive, simple in design, and widely used in small and medium-sized workshops.\u003c\/p\u003e\n\u003cp data-start=\"513\" data-end=\"662\"\u003eBut their widespread use has created a dangerous assumption: that because they are common, they are acceptable for all woodworking dust applications.\u003c\/p\u003e\n\u003cp data-start=\"664\" data-end=\"677\"\u003eThey are not.\u003c\/p\u003e\n\u003cp data-start=\"679\" data-end=\"871\"\u003e\u003cstrong data-start=\"679\" data-end=\"719\"\u003eLEV110: Open Bag Filters – Wood Dust\u003c\/strong\u003e was written to address the practical and safety concerns surrounding these systems, particularly where they are used indoors to control fine wood dust.\u003c\/p\u003e\n\u003cp data-start=\"873\" data-end=\"1130\"\u003eThis guide provides practical, field-based guidance for LEV practitioners assessing open bag filtration units, helping bridge the gap between basic airflow checks and a more critical assessment of system suitability, containment, maintenance, and fire risk.\u003c\/p\u003e\n\u003ch2 data-section-id=\"vtol3j\" data-start=\"1132\" data-end=\"1191\"\u003eA Practical Guide to Assessing Open Bag Filtration Units\u003c\/h2\u003e\n\u003cp data-start=\"1193\" data-end=\"1349\"\u003eOpen bag units can have legitimate applications, particularly where they are used to collect coarse waste streams such as chips, shavings, and planer waste.\u003c\/p\u003e\n\u003cp data-start=\"1351\" data-end=\"1424\"\u003eProblems arise when they are connected to processes generating fine dust.\u003c\/p\u003e\n\u003cp data-start=\"1426\" data-end=\"1632\"\u003eIn practice, many open bag units are routinely found connected to sanding, MDF machining, hardwood machining, fine sawing, and other dust-generating processes for which they may be fundamentally unsuitable.\u003c\/p\u003e\n\u003cp data-start=\"1634\" data-end=\"1654\"\u003eLEV110 explains why.\u003c\/p\u003e\n\u003cp data-start=\"1656\" data-end=\"1856\"\u003eWritten for LEV engineers, COSHH assessors, occupational hygienists, and woodworking duty holders, this guide examines both the strengths and critical weaknesses of open bag systems in real-world use.\u003c\/p\u003e\n\u003cp data-start=\"1858\" data-end=\"1900\"\u003eInside, you’ll find practical guidance on:\u003c\/p\u003e\n\u003cul data-start=\"1902\" data-end=\"2864\"\u003e\n\u003cli data-section-id=\"yrjkwv\" data-start=\"1902\" data-end=\"2015\"\u003eWood dust health hazards, including occupational asthma, dermatitis, respiratory irritation, and cancer risks\u003c\/li\u003e\n\u003cli data-section-id=\"del94\" data-start=\"2016\" data-end=\"2057\"\u003eHardwood dust as a Group 1 carcinogen\u003c\/li\u003e\n\u003cli data-section-id=\"ek5oux\" data-start=\"2058\" data-end=\"2118\"\u003eEngineered wood products and formaldehyde exposure risks\u003c\/li\u003e\n\u003cli data-section-id=\"1rwc7fm\" data-start=\"2119\" data-end=\"2170\"\u003eIntended applications for open bag filter units\u003c\/li\u003e\n\u003cli data-section-id=\"2nkeei\" data-start=\"2171\" data-end=\"2247\"\u003eWhy positive pressure systems present a fundamental containment weakness\u003c\/li\u003e\n\u003cli data-section-id=\"wd5ub2\" data-start=\"2248\" data-end=\"2328\"\u003eDust leakage through bags, seams, casing defects, seals, and collection bags\u003c\/li\u003e\n\u003cli data-section-id=\"1igfwg4\" data-start=\"2329\" data-end=\"2411\"\u003eInspection of filter media, stitching, bag condition, and attachment integrity\u003c\/li\u003e\n\u003cli data-section-id=\"hpsfm6\" data-start=\"2412\" data-end=\"2469\"\u003eSuitable filter media for fine wood dust applications\u003c\/li\u003e\n\u003cli data-section-id=\"1c9gby7\" data-start=\"2470\" data-end=\"2535\"\u003eFire and explosion risks associated with wood dust collection\u003c\/li\u003e\n\u003cli data-section-id=\"1yh6bk4\" data-start=\"2536\" data-end=\"2590\"\u003eCommon ignition sources and delayed fire scenarios\u003c\/li\u003e\n\u003cli data-section-id=\"1ralurl\" data-start=\"2591\" data-end=\"2652\"\u003eHSE WIS32 guidance and practical positioning requirements\u003c\/li\u003e\n\u003cli data-section-id=\"1fxcqwl\" data-start=\"2653\" data-end=\"2718\"\u003ePractical concerns during emptying, maintenance, and cleaning\u003c\/li\u003e\n\u003cli data-section-id=\"100tpy2\" data-start=\"2719\" data-end=\"2790\"\u003eWhen open bag units may be fundamentally unsuitable for the process\u003c\/li\u003e\n\u003cli data-section-id=\"n9mywd\" data-start=\"2791\" data-end=\"2864\"\u003eReal-world examples of failed systems and common defects seen on site\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2866\" data-end=\"3050\"\u003eThe guide also includes practical observations and photographic examples from field inspections, helping practitioners recognise common failings and make proportionate recommendations.\u003c\/p\u003e\n\u003ch2 data-section-id=\"1u9nex9\" data-start=\"3052\" data-end=\"3071\"\u003eWhy This Matters\u003c\/h2\u003e\n\u003cp data-start=\"3073\" data-end=\"3136\"\u003eWood dust should never be treated as just a housekeeping issue.\u003c\/p\u003e\n\u003cp data-start=\"3138\" data-end=\"3377\"\u003eExposure to wood dust is associated with serious occupational health risks, including asthma, respiratory sensitisation, dermatitis, and certain nasal cancers. Fine dust also presents significant fire and, in some cases, explosion hazards.\u003c\/p\u003e\n\u003cp data-start=\"3379\" data-end=\"3454\"\u003eA major concern with many open bag units is their positive pressure design.\u003c\/p\u003e\n\u003cp data-start=\"3456\" data-end=\"3721\"\u003eBecause the fan is positioned upstream of filtration, the collector body and filter bags are pressurised during operation. This means damaged seams, worn seals, poor bag attachment, or minor casing defects can leak contaminated air directly back into the workplace.\u003c\/p\u003e\n\u003cp data-start=\"3723\" data-end=\"3807\"\u003eIn other words, the extraction system itself can become a source of worker exposure.\u003c\/p\u003e\n\u003cp data-start=\"3809\" data-end=\"3854\"\u003eCommon issues identified in practice include:\u003c\/p\u003e\n\u003cul data-start=\"3856\" data-end=\"4309\"\u003e\n\u003cli data-section-id=\"164qa3i\" data-start=\"3856\" data-end=\"3905\"\u003eDust leakage through filter bags or stitching\u003c\/li\u003e\n\u003cli data-section-id=\"v2eczt\" data-start=\"3906\" data-end=\"3978\"\u003eDust-contaminated external bag surfaces becoming airborne on startup\u003c\/li\u003e\n\u003cli data-section-id=\"f3bbxr\" data-start=\"3979\" data-end=\"4021\"\u003ePoorly sealed or leaking casing joints\u003c\/li\u003e\n\u003cli data-section-id=\"o3fxg2\" data-start=\"4022\" data-end=\"4063\"\u003eDamaged or overloaded collection bags\u003c\/li\u003e\n\u003cli data-section-id=\"ivdjrf\" data-start=\"4064\" data-end=\"4117\"\u003ePoor housekeeping causing secondary contamination\u003c\/li\u003e\n\u003cli data-section-id=\"mtcakp\" data-start=\"4118\" data-end=\"4170\"\u003eUnits positioned indoors handling fine wood dust\u003c\/li\u003e\n\u003cli data-section-id=\"124kry0\" data-start=\"4171\" data-end=\"4241\"\u003eInadequate exclusion zones from personnel or combustible materials\u003c\/li\u003e\n\u003cli data-section-id=\"ki8ga\" data-start=\"4242\" data-end=\"4309\"\u003eIncorrect applications on sanding, MDF, and fine dust processes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4311\" data-end=\"4480\"\u003eLEV110 helps practitioners move beyond simply recording airflow readings and instead assess whether the system is genuinely suitable and adequately controlling exposure.\u003c\/p\u003e\n\u003ch2 data-section-id=\"1r4u1vs\" data-start=\"4482\" data-end=\"4506\"\u003eWho This Guide Is For\u003c\/h2\u003e\n\u003cp data-start=\"4508\" data-end=\"4540\"\u003eLEV110 is essential reading for:\u003c\/p\u003e\n\u003cul data-start=\"4542\" data-end=\"4738\"\u003e\n\u003cli data-section-id=\"10ke010\" data-start=\"4542\" data-end=\"4571\"\u003eLEV engineers and testers\u003c\/li\u003e\n\u003cli data-section-id=\"11ueg1p\" data-start=\"4572\" data-end=\"4591\"\u003eCOSHH assessors\u003c\/li\u003e\n\u003cli data-section-id=\"15s5mcb\" data-start=\"4592\" data-end=\"4619\"\u003eOccupational hygienists\u003c\/li\u003e\n\u003cli data-section-id=\"1yrwt2u\" data-start=\"4620\" data-end=\"4653\"\u003eHealth \u0026amp; safety professionals\u003c\/li\u003e\n\u003cli data-section-id=\"1wmaoyn\" data-start=\"4654\" data-end=\"4687\"\u003eWoodworking workshop managers\u003c\/li\u003e\n\u003cli data-section-id=\"icqeki\" data-start=\"4688\" data-end=\"4738\"\u003eDuty holders responsible for wood dust control\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4740\" data-end=\"4980\"\u003eWhether you are inspecting, testing, specifying, or relying on these systems, this guide provides practical technical insight into one of the most common — and most frequently misunderstood — dust extraction systems found in UK woodworking.\u003c\/p\u003e\n\u003ch2 data-section-id=\"189qedo\" data-start=\"4982\" data-end=\"5000\"\u003eProduct Details\u003c\/h2\u003e\n\u003cp data-start=\"5002\" data-end=\"5385\"\u003e\u003cstrong data-start=\"5002\" data-end=\"5012\"\u003eTitle:\u003c\/strong\u003e LEV110: Open Bag Filters – Wood Dust\u003cbr data-start=\"5049\" data-end=\"5052\"\u003e\u003cstrong data-start=\"5052\" data-end=\"5063\"\u003eSeries:\u003c\/strong\u003e LEV Academy Technical Guides\u003cbr data-start=\"5092\" data-end=\"5095\"\u003e\u003cstrong data-start=\"5095\" data-end=\"5106\"\u003eFormat:\u003c\/strong\u003e Digital guide (PDF)\u003cbr data-start=\"5126\" data-end=\"5129\"\u003e\u003cstrong data-start=\"5129\" data-end=\"5139\"\u003eFocus:\u003c\/strong\u003e Practical assessment of open bag filtration units used in woodworking dust extraction\u003cbr data-start=\"5225\" data-end=\"5228\"\u003e\u003cstrong data-start=\"5228\" data-end=\"5239\"\u003eAuthor:\u003c\/strong\u003e Louise Davies Wood\u003cbr data-start=\"5258\" data-end=\"5261\"\u003e\u003cstrong data-start=\"5261\" data-end=\"5275\"\u003ePublished:\u003c\/strong\u003e May 2026\u003cbr data-start=\"5284\" data-end=\"5287\"\u003e\u003cstrong data-start=\"5287\" data-end=\"5311\"\u003eApplicable Guidance:\u003c\/strong\u003e COSHH Regulations, HSE WIS32, HSG258, BS EN 12779, DSEAR considerations\u003c\/p\u003e","brand":"LEV Academy","offers":[{"title":"Default Title","offer_id":53693574775123,"sku":null,"price":15.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1017\/3313\/8771\/files\/Screenshot2026-05-07110755.png?v=1778190226"}],"url":"https:\/\/www.levacademy.co.uk\/collections\/guides.oembed","provider":"LEV Academy","version":"1.0","type":"link"}