Please specify your code of construction, in general plate qualifications can be used for piping with few exceptions. however for performance qualifications diameter restriction (e.g. >24" dia in ASME BPV IX) are applicable as per the code of construction. Process restrictions will not be specified in ASME, you can refer to API RP 582 or the applicable contract documents
On Thu, Nov 22, 2012 at 7:39 PM, cyriac dominic <cyriacd@gmail.com> wrote:
-- Dear Experts,I am a member of this form and the questions and answers are very much interesting. Now I have got some questions regarding welding.We have to fabricate some equipments and pipe lines for a geothermal power plant in Africa. The material of the pipe is A106 gr B and material for the equipments is P265GH which is equivalent to ASTM 516 gr 60. Following are my questions.1) Whether we can use the procedure qualifications which are done on the plate to qualify the pipe welding ( both are the same P nos)2)whether we can use the procedure qualification which is done on the plate can be used for the performance qualification of welders for pipes?3)Our client is not allowing us to weld with GMAW on pressure retaining equipments or components and instituting not to use FCAWon pressure vessels and piping other than carbon steel. What is the technical reason for that? Or is it some where in the ASME code?..Please give me some light on that.Regards Cyriac Dominic
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