ASME code and PED
ASME code and PED
(OP)
Could somebody indicate what we should do when we design, fabricate and inspect pressure vessels using ASME code but need PED for Europe country? Take pressure vessel made of SA516-70 as an exsample?
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
|
RE: ASME code and PED
Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
RE: ASME code and PED
With the PED you must satisfy the requirements of Annex 1 (Essential Safety Requirements [ESR])
The first thing I would do is check to see if the vessel falls under the scope of the PED, if it does check which module you require, if you need a Notified Body then appoint one as soon as possible and talk to them about documentation, etc. so it is to their liking, this will make the path to PED compliance easier.
One thing to note is that stamping for the PED is very prescribed and is different to the required for a U Stamp, we often put two nameplates on vessels that have a U Stamp and PED compliance.
You can use what ever materials you like as long as they conform to the requirements of Annex 1 of the PED and you can complete a Particular Material Appraisal (PMA) which is then approved by your Notified Body.
Many notified bodies have a template ESR checklist that shows where the many codes provide compliance and where they fall short, pick an NB that has such a list and life will be easier.
RE: ASME code and PED
Sometimes this equates to a higher pressure than specified in UG-99 and additional checks are required to ensure the stresses during testing are below 90% Yield.
Also be careful with carbon steels. PED requires the Carbon Content to be less than 0.25% but some ASME materials (eg SA105) allows up to 0.35%