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Pay attention when you prepare the test plates for welding and in general when you transfer marking on plate. Add an arrow to indicate the direction of rolling. When you weld test coupons for KCV test put the arrows of the test pieces in line NOT PARALLEL. It means you have to be sure that your...

Please don't forget Impact Testing. Read Par 9.3.2 it refers to specimens taken from the fittings. Mauro

The Manufacturer prpares under his responsibility, the Design Report(consisting in design drawing and design calculations, based upon the UDS(User's Design Specification). RPE (Registered Professional Engineer) certifies the design report at Manufacturer's responsibility, to be in accordance...

Ref. B 16.9 9.4 Applicability of Test Results It is not necessary to conduct an individual test of fittings with all combinations of sizes, wall thicknesses and materials. A successful proof test on one representative fitting may represent others to the extent described herein. 9.4.1 Size...

Hi folks, discussion is hot. Take it easy. Code books, may be, are not easy to interpret, but the issue of the infinite variaty of pressure equipment is not easy to descibe either. Did you ever read other national standards? ASME Code is the most complete and clear among all, and it is the first...

I am an AI. The answer of "pvesseleng" is the correct one. But your conclusion is a little bit inaccurate: Not the AI or similar authority, just the AI, reviews (not approve) these documents which are full responsibility of the Manufacturer.

In Italy gas cylinders (forged) in accordance with national safety requirement were hydrostatic tested at 1.5 MAWP and one sample each lot (max 200 pcs)was required to be burst tested and bursting could not occur at less than twice the MAWP. I presume other european standard required the same...

Cold formed head from material SA 516/70 Normalized plate. After forming head has been normlized. Is it required that the material be represented by test specimens which have been subjected to the same heat treatments above the lower transformation temperature? I.e. two normalization cycles...

Mind that R stamp may be used on pressure items constructed to other Codes, as well. Mauro

Hi, McQuay. I as well believe that your item should be cathegorized as a direct fired p.v. per U-1(h). Don't you have any wright of appeal to the Chief Boiler Inspector of your State or Municipality?

Dear GenB. metengr answer is exaustive. Just for sake of precision the first weld has not base metal as backing material but it is considered with backing because double side welded (Ref.Sect.IX: QW-310.2 and QW-402.4). All the best. Mauro

Yes. Mauro

NB do not want the AI to use his NB commission No. when the MDR is not registered with National Board. At NB training courses Commissioned Inspectors are said so: apparently when NB Commission No. is addressed, the NB take responsibility of the behavier of the AI. and Mauro

Yes, impact testing is required (MDMT -49 °C) for both materials. Mauro

I agree Nozzle Twister. For blind flanges corrosion allowance should be added to the B 16.5 specified thk. In my opinion. Mauro

Thanks Metengr. But I am still baffled. Material of nozzle and head is all the same PNo.1 Gr.1. Please consider that supplementary essential vaiables enter in force, being impact tested. Thus T (Base Metal thk) minimum qualified is the minimum of the PQR. If I use a 13 mm coupon it will not...

WPS for nozzle 10 mm thick set-in into shell 26 mm thick. Impact testing is a requirement. How to prepare PQR test coupon (one or two) to satisfy both t=26 and T 10 and 26?

Yes, with limitations given in Par. UCS-6. Mauro Gonzaga

Since ASME Sect.I requires RT (although UT RECORDED, is permitted by Code Case 2235) Engineering Companies usually require both because for heavy thickness UT is more reliable. Mauro