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https://inspectioneering.com/journal/2016-12-29/5944/dead-leg-integrity-management-system
Dead-leg locations include: blanked branches, lines with normally closed block valves, lines which have one end blanked, pressurized dummy support legs, stagnant control valve bypass piping, spare pump piping, level bridles, relief valve inlet and outlet header piping, pump trim bypass lines, high point vents, sample points, drains, bleeders ...
http://www.wermac.org/steel/pipesupports.html
Dummy Leg Supports A dummy leg is an extension piece welded to an elbow in order to support a pipe line, and rests or anchors on some steel member. Pipe size, length and wall thickness of the pipe-extension depends on several factors such as the total load, the parent pipe line size etc.. See typical dummy leg image on the right of this page.
https://www.chemicalprocessing.com/articles/2011/watch-out-for-dead-legs/
Sep 27, 2011 · Watch Out For Dead-Legs Lack of flow doesn't mean lack of problems. By Andrew Sloley, Contributing Editor. Sep 27, 2011. ... This can lead to immediate process fluid escape if the system pressure can push the ice plug out. At other times, the ice plug can keep a crack sealed until the system starts to warm. Then, once the ice melts, process ...
http://aaadrafting.com/pneumatics/dummy-leg.html
Dummy leg drafting and development is used in the piping industry. A dummy leg is a stand that is used to support a section of piping but it could also be a branch pipe added to an elbow, straight pipe or transistion. It gets a little tricky when you have to layout and weld one of these supports onto an elbow or other circular shaped pipe fitting.
http://pipingdesigners.com/contents/tips-tools-training/section-9-pipe-supports/17-section-9a-pipe-supports-part-1
Dummy Support Legs – (or Dummy Legs) – This is simply a piece of pipe extended from an elbow to provide support when a pipe line enters or leaves a pipe rack short of a support and is left improperly support. A stub or length of pipe sized to carry the load is welded to the elbow and extended beyond the support.
https://www.youtube.com/watch?v=w9la9JTKAOo
Jun 09, 2016 · This video explain about Layout and Development of Elbow Dummy support for piping ... welding process,p&id details and symbols,valves,pressure gauge, hydro testing details, welding calculation ...Author: Technical Piping
https://app.aws.org/forum/topic_show.pl?tid=12576
Aug 01, 2007 · Dear all, I encountered a situation where the dummy leg is welded to the pipe at its circumfrential joint. Inorder to avoid the weld intersection, the welder has left the gap at the weld intersection(I mean did not weld). Can some one tell me: 1). Is it a requirement that pipe should be in full contact with the support 2). Cutting a pocket on the dummy leg to avoid weld intersection between ...
https://app.aws.org/forum/topic_show.pl?tid=8671
Mar 13, 2006 · I want to know the reasons of creating weep hole on the piping lines dummy support? By medicinehawk Date 03-03-2006 00:59 Do you mean "Dummy support" as opposed to damisupport? Sometimes a stancion is welded to the outside radius of a 90 degree fitting (of a pipe line) where one part of the pipe runs horizontal and the other pipe runs vertical ...
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