how about KT Troung (from Ultragen Group, Quebec)article that was featured in Pauls pipingdesign.com website - Evaluating piping dynamic stresses (pdf). or M. Mahulja article that appeared in August 1998 issue of Hydrocarbon processing Magazine (archives) - Influence of piping vibration on pump...
the code is a guideline and not rules? not accordng to glynn woods (casti books), the AI and the code committee.
Introduction of B31.3-1996 Edition
Second paragraph opens .. "Rules for each section reflect ..."
Then follows by the statement "The designer is cautioned that the...
if your operating under severe cyclic condition, then your worry is more than the calculated stress. in this conditon need to focus more on the nuts and bolts of the piping layout details such as the branch and nozzle connection, welding approach, etc. rarely one will encounter an exposure to...
more on phe maintenance and operation.
phe limit is the pressure since plate are thin and cover wide area.
For maintenance, shell and tube would normally require a hydro extractor to pullout if its going to be repaired or hydro jetted plus the added cost of blind and deblind (more opening than...
how does eduard47 thread jive with para 302.2.4(1) that state "... its permissible to exceed the pressure rating or the allowable stress for pressure design at the design temp of ...". thats over 100% .
we've got about 48 units of titanium PHE (other calls it plate and frame) supplied by APV and another 24 units of SS PHE from Alfa Laval. Maintenance is easy, and perfromance is exellent (only 2 plate failures in 17 years). Increase duty by adding plate is a breeze. Regasketting cost however is...
i agree with the position taken by prex. why perfrom a s tress calc - to esure that we keep the stresses in the pipe and fitting within the code allowable limit (the "shall not exceed" clause). my zen master says - the calculated stresses are not necessaritly the "real"...
if mechengr interest in the difinition is because he's preparing a service contract or probably a purchse spec then its best to refer the defintiion to the industry Code and Std.
Pipe, piping, piping system are defined in B31. The Code has also make a qualification when tube is consider a pipe...
plenty in the web. contact salesperson of Armstrong, spirax sarco or yarway for a free copy of your catalog plus the software on trap selection. catalog are now in cd. if not download data from the website. better still contact your supplier and ask them to visit your plant and not to forget to...
im assuming u have earn school credits in strenght of material and engineering mechanics. if that is the case, best source is the AISC and the Smith and Van Laan Pping and Pipe Support System. You'll need also to check the weld and stiffness so include the Blodgett Welding Hndbook and the...
is this for risk assessment or part of the hazop using a fmea? my first formal exposure with cause and effect is with SPC (at that time tqm is a big thing). Then it was again introduced by HSB when they did a failure analysis seminar. Lately ABS Group has again discuss the method with us in line...
what it means -for a given percentage change in valve opening will produce same percentage change in flow. the chart (% Cv max vc % ball opening) from ball valve mfr such as ktm and jamesbury will make it much clearer.
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our plug valve spec is. A215 body rf 316ss plug, nonlubricated...
the mods is being done at the user facility not by the fitting manufacturer, so crn dont apply. the end user is prepared to qualify it thrugh calc (not necessarily a fea) then it presupposes that quality inspection is going to beperformned hence a hydro would had been part of the exercise (weld...
prepared and published by richardson engineering services, inc. po box 1055. san marcos, CA 92069. 714 489-5806.
full title is The Richardson rapid construction cost estimating system. good luck.
Alaskan pipeline has never been referred to as alaskan linepipe and i can name a few more. in the pipeline industry, a pipeline is a pipeline. i still maintained that api 5L-grb is a pipe.
