Thanks for the information. We do have PED services but want to be somewhat educated before we are put on the clock. I can see I have some work to do. Thanks again deanc. Also thanks to Konrad. Is the "Guide for ASME stamp holders-Use of ASME VIII div 1 to meet the EC PED available on line...
We receiently received a job to fabricate some pressure vessels in accordance with ASME. We are a vessel code shop and hold procedures and welder quqlifications to ASME Sec IX. However, I am told we will have to requalify our procedures and welders under the "Pressure Equipment Directive" and...
We reciently received a job to fabricate some pressure vessels in accordance with ASME and the "Pressure Equipment Directive". We are a code vessel shop and hold procedures and performance qualifications to ASME Sec. IX, however I am told we will have to requalify our procedures and welders...
I have a WPS backed up with several PQR's all of which have had CVN impacts included. In ASME sec IX QW 403.6 the minimum thickness is limited to T or 5/8" which ever is less from that normally qualified which is 3/16" or 1/16" depending on the thickness of the test coupon. It is...
Thanks for your input. I was afraid of what I would find by asking this question. You both have confirmed my feelings on the matter and reinforced my recomendations to management. Now I guess I best get busy with my PQR's. Thanks Again.
When qualifiying welding procedures to ASME Sec. IX can materials listed with S No.'s only (Example A572-50 S-1) be grouped with corresponding P No.'s? QW 420.2&3 addresses this issue but seems to me to be unclear. Any assistance will be apprecaiated.
I need to come up with equipment to fusion weld .006 thick 316L SS. I have two welds to make. One is a long seam in a 28" dia. cylinder with both ends open. The other is round seams of the cylinder to slightly thicker formed heads. The heads will have an acces hole approx. 8" in dia...
It is my understanding that using the Delong (FN) diagram involves the nickel and chromium equivalents from the Weld Metal analysis, not base and filler seperate. This results in a WRC Ferrite Number (FN). The acceptable(FN)is usually specified by job/service specifications and manipulated by...
I need to make a repair weld on a clutch plate made from "spring steel". This is all the information I have on the material without doing a chemical analysis. There are several cracks that need to be repaired and an area that needs to be reinforced. I am leaning towards using a 309L...
PREHEAT, INTERPASS, POSTWELD SOAK, PROPER CARE OF FLUX TO AVOID MOISTURE, CORRECT FILLER METAL AND SLOW CONTROLED COOLING RATE. These are all areas where if not properly executed can result in cracking. I also agree that a delayed NDT inspection is essential. Investigate these areas and assure...
ASTM A-264 states that "the alloy-cladding metal may be metallurgically bonded to the base metal by any method that will produce a clad steel which will conform to the requirements of this specification". However, using the GMAW process to overlay a large does not area sound like a...
Try looking at the seam welding equipment Jetline Inc. offers. For this application I would suggest the GTAW process. However with the Jetline equipment you can make this weld in one pass from one side with great results and productivity.
According to AWS 5.1-91 Part C Sec. 22 Electrode Identification
paragraph 22.1
At least one imprint of the electrode designation (classification plus any optional designators) shall be applied to the electrode covering in the order specified in Figure 16 (i.e. EXX YY-XXX)within 2-1/2"...
