{"id":965,"date":"2019-06-13T17:59:08","date_gmt":"2019-06-13T06:59:08","guid":{"rendered":"http:\/\/paulyeatman.net.au\/?p=965"},"modified":"2019-06-13T17:59:53","modified_gmt":"2019-06-13T06:59:53","slug":"question-regarding-classification-of-passthroughs-and-laminar-flow-hoods","status":"publish","type":"post","link":"https:\/\/paulyeatman.net.au\/index.php\/2019\/06\/13\/question-regarding-classification-of-passthroughs-and-laminar-flow-hoods\/","title":{"rendered":"Question regarding classification of passthroughs and laminar flow hoods"},"content":{"rendered":"<h4 class=\"js-post-title post-title\"><a href=\"https:\/\/www.linkedin.com\/groups\/3714467\/3714467-6176096260999643137\" target=\"_blank\" rel=\"noopener\"><strong>The Question posed on <\/strong><\/a><strong><a href=\"http:\/\/www.linkedin.com\/groups\/3714467\/3714467-6162232594374103040?trk=hp-feed-group-discussion\" target=\"_blank\" rel=\"noopener\">LinkedIn<\/a>:<\/strong><\/h4>\n<h4 class=\"js-post-title post-title\">&#8220;<span id=\"ember428\" class=\"ember-view\"><span id=\"ember149\" class=\"ember-view\">Can we provide the grades of pass box and lafs in on critical area with respect to material movement ? For example if a pass box installed between grade c and grade d environment can be designated as grade b? Similarly laf installed in grade c area can be designated as grade c? If yes what woukd be the viable and non viable limits to be applied?<\/span><\/span>&#8220;<\/h4>\n<p><!--more--><\/p>\n<h4 class=\"js-post-body post-body\" tabindex=\"0\">My reply was this:<\/h4>\n<p class=\"mentions-texteditor__content\">&#8220;<span id=\"ember1132\" class=\"ember-view\">If you have a pass through linking a grade D to a grade C area, you could classify it as Grade C with positive pressure.\u00a0 Think of it as a step over in an airlock.\u00a0 One side of the step over is Grade D, the other Grade C.\u00a0\u00a0 If you have a laminar flow hood in a Grade C area, then you could conceivably classify that as higher than Grade C.\u00a0 You&#8217;d need to validate this of course.\u00a0 Your limits are based on what the regs require at most and what your commissioning studies show at least.<\/span>.&#8221;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The Question posed on LinkedIn: &#8220;Can we provide the grades of pass box and lafs in on critical area with respect to material movement ? For example if a pass box installed between grade c and grade d environment can be designated as grade b? Similarly laf installed in grade c area can be designated [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[21,5],"tags":[58,29,10],"class_list":["post-965","post","type-post","status-publish","format-standard","hentry","category-advice-provided","category-documentation","tag-change-control","tag-documentation","tag-training"],"_links":{"self":[{"href":"https:\/\/paulyeatman.net.au\/index.php\/wp-json\/wp\/v2\/posts\/965","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/paulyeatman.net.au\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/paulyeatman.net.au\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/paulyeatman.net.au\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/paulyeatman.net.au\/index.php\/wp-json\/wp\/v2\/comments?post=965"}],"version-history":[{"count":1,"href":"https:\/\/paulyeatman.net.au\/index.php\/wp-json\/wp\/v2\/posts\/965\/revisions"}],"predecessor-version":[{"id":966,"href":"https:\/\/paulyeatman.net.au\/index.php\/wp-json\/wp\/v2\/posts\/965\/revisions\/966"}],"wp:attachment":[{"href":"https:\/\/paulyeatman.net.au\/index.php\/wp-json\/wp\/v2\/media?parent=965"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/paulyeatman.net.au\/index.php\/wp-json\/wp\/v2\/categories?post=965"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/paulyeatman.net.au\/index.php\/wp-json\/wp\/v2\/tags?post=965"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}