{"id":376509,"date":"2024-10-20T02:48:27","date_gmt":"2024-10-20T02:48:27","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iso-21904-12020-2\/"},"modified":"2024-10-26T04:57:51","modified_gmt":"2024-10-26T04:57:51","slug":"bs-en-iso-21904-12020-2","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iso-21904-12020-2\/","title":{"rendered":"BS EN ISO 21904-1:2020"},"content":{"rendered":"<p>This document defines the general requirements for ventilation equipment used to capture and separate fumes generated by welding and allied processes, e.g. arc welding and thermal cutting.<\/p>\n<p>This document also specifies the test data to be marked on the capture devices.<\/p>\n<p>It applies to the design and manufacture of parts of the equipment including hoods for welding, ducting, filter units, air movers, systems that inform of unsafe operation and workplace practices to ensure safe working with regard to exposure.<\/p>\n<p>Significant hazards are listed in <span class=\"xref\">Clause&nbsp;4<\/span>. It does not cover electrical, mechanical and pneumatic hazards.<\/p>\n<p>This document is applicable to:<\/p>\n<ul>\n<li>\n<p>local exhaust ventilation systems (LEV) excluding draught tables;<\/p>\n<\/li>\n<li>\n<p>mobile and stationary equipment;<\/p>\n<\/li>\n<li>\n<p>separation equipment used for welding and allied processes;<\/p>\n<\/li>\n<\/ul>\n<p>This document is not applicable to:<\/p>\n<ul>\n<li>\n<p>general ventilation, air make up or air movement systems;<\/p>\n<\/li>\n<li>\n<p>air conditioning systems;<\/p>\n<\/li>\n<li>\n<p>grinding dust.<\/p>\n<\/li>\n<\/ul>\n<p>This document applies to systems designed and manufactured after its publication.<\/p>\n<div class=\"non-normative-note\">\n<div class=\"note-label\">\n  NOTE\n <\/div>\n<p>Specific safety requirements for thermal cutting machines are defined in ISO 17916.<\/p>\n<\/div>\n<h4>PDF Catalog<\/h4>\n<table border=\"1px\" class=\"des-table\">\n<tr>\n<th>PDF Pages<\/th>\n<th>PDF Title<\/th>\n<\/tr>\n<tr>\n<td><b>2<b><\/td>\n<td>undefined  <\/td>\n<\/tr>\n<tr>\n<td><b>7<b><\/td>\n<td>Annex ZA (informative)Relationship between this European Standard and the Essential Requirements of EU Directive 2006\/42\/EC aimed to be covered  <\/td>\n<\/tr>\n<tr>\n<td><b>10<b><\/td>\n<td>Foreword  <\/td>\n<\/tr>\n<tr>\n<td><b>11<b><\/td>\n<td>Introduction  <\/td>\n<\/tr>\n<tr>\n<td><b>12<b><\/td>\n<td>1 Scope <br \/> 2 Normative references  <\/td>\n<\/tr>\n<tr>\n<td><b>13<b><\/td>\n<td>3 Terms and definitions  <\/td>\n<\/tr>\n<tr>\n<td><b>15<b><\/td>\n<td>4 Significant hazards <br \/> 5 Requirements and verifications <br \/> 5.1 General  <\/td>\n<\/tr>\n<tr>\n<td><b>18<b><\/td>\n<td>5.2 Extraction devices  <\/td>\n<\/tr>\n<tr>\n<td><b>24<b><\/td>\n<td>5.3 Ducting properties  <\/td>\n<\/tr>\n<tr>\n<td><b>26<b><\/td>\n<td>5.4 Filters, related components and handling  <\/td>\n<\/tr>\n<tr>\n<td><b>30<b><\/td>\n<td>6 Instructions for use <br \/> 6.1 General <br \/> 6.2 Extraction devices <br \/> 6.2.1 Captor hoods and nozzles  <\/td>\n<\/tr>\n<tr>\n<td><b>31<b><\/td>\n<td>6.2.2 On-torch extraction systems <br \/> 7 Marking <br \/> 7.1 General marking  <\/td>\n<\/tr>\n<tr>\n<td><b>32<b><\/td>\n<td>7.2 Marking of separation efficiency <br \/> 7.3 Marking of captor hoods and nozzles <br \/> 7.4 Marking of on-torch extraction systems  <\/td>\n<\/tr>\n<tr>\n<td><b>34<b><\/td>\n<td>Annex A (informative)  Malfunctions and determination of minimum airflow  <\/td>\n<\/tr>\n<tr>\n<td><b>35<b><\/td>\n<td>Annex B (normative)  Label for welding fume separation equipment  <\/td>\n<\/tr>\n<tr>\n<td><b>36<b><\/td>\n<td>Bibliography  <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p><b>Health and safety in welding and allied processes. Equipment for capture and separation of welding fume &#8211; General requirements<\/b><\/p>\n<table class=\"shortdes-table\" style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/bsi\/\"><b>BSI<\/b><\/a><\/td>\n<td>2021<\/td>\n<td>38<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":376519,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[427,2641],"product_tag":[],"class_list":{"0":"post-376509","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-25-160-01","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/376509","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/376519"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=376509"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=376509"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=376509"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}