Except ASME B31.1 and B31.3, all other Sec1, VIII only non mandatory requirements on Preheat. There are exemption to PWHT if we do Preheat with certain limitations.
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On Sat, Mar 30, 2019 at 7:54 AM José Juan Jiménez Alejandro <jjjimeneza@gmail.com> wrote:
It is not necessarily the information you are looking for, but I think it can be a guide for you to resolve your doubt, I recommend that you see the NONMANDATORY APPENDIX R PREHEATING of Section VIII Div. 1 of ASME, it brings excellent recommendations, but it is not a guarantee.Regards!.El jue., 28 mar. 2019 a las 22:45, Ramin Kondori (<raminkondori@gmail.com>) escribió:The code does not give you these temperatures.That's the welding engineer's job. Of course, there are tables and recommendations but not in ASME Sec. IX.These are "change" in temp, not the temperature itself.RegardsRamin KondoriSr. QA/QC & Welding Engineer-----------------------------------------------------------PG-Dip. in Welding Engineering (IWE AT 0070)BSc. in Civil Engineering (IUT)BGAS Painting InspectorASNT Level I&II--On Fri, Mar 29, 2019 at 8:05 AM Souravbohray <ermechsouravbohray@gmail.com> wrote:i want to know were is given asme sec 9 what will be interpass temprature.is there any value given in code for interpass temp it is given only + 55 c but what temperature we can go +55 c preheating temp given in asme sec 8--
On Tuesday, 14 September 2010 18:13:18 UTC+5:30, limesh M wrote:Dear All,
Design Code: ASME B31.3 Welding Code: ASME SEC IX
I have a Low temperature carbon steel impact tested PQR with a PWHT range of 600⁰±10⁰C.Is this condition giving an exemption for me on QW406.3 to prepare a WPS with maximum interpass temperature of 200⁰C.
Maximum interpass temperature observed during specimen welding: 140⁰C
Regards,Limesh
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