Recent content by nkvon

Why acceptance criteria lack of penetration per Asme B31.3, ( normal category ) is 38 mm, I think it is a critical defect. Who could help me explain this case code, Many thanks

It depend on actual fabricate if don't need Overhead(OV) position. You mention flat position only you could qualify welder 1G

Dear All, My company is fabricating casing: plate 6 mm weld to stiffener(angle and bar) as file attached, Please help me welding sequence to minimize distortion, we use FCAW process, Thank you first...

Thanks all, I wonder how much appreciate silic or Aluminum content to get full killed, any document refer could convince client that it has been killed or half killed

IN my project, material require follow A36-2014, so it require be killed During review Mill cert, some of them note that material has been fully killed and other no, Any another case, we used the old material follow A36-2008, also no mention any killed, I check in verson ASTM A36-2008 also no...

Thanks for your respond Mr168, It rather clear but I have 1 case cause little confuse to make clear: example if I qualify 60, so it shall qualify all joint in CJP prequalified at fig 3.3 and It will cover join single bevel 47 degree (B-U4b-GF), because it in tolerance(-5, +10) but it sound like...

Dear Experts, I have confused when prepared WPS follow AWS D1.1 I qualify CJP groove bevel angle is 47 degree, Could it qualified for 60 groove weld degree or not, I not clear in" except qualification of any CJP groove weld qualifies for any groove detail conforming with the requirements of...

If project spect not mention, Normally it will separate per line class, but for easy to control you should choose RT joint per ISO not per sheet, example iso have 5 sheets and 56 joints, you choose 6 joints, that enought

I thinks, Weld to the rung pipe/header is groove weld or branch weld, it was not butt or fillet

I have face this case, need your advice, In PWHT chart, my client require to separate the thermocouple record each other from beginning or finishing for him to can see how many thermocouple actualy, because in chart they all overlap to each other create a dark line. Was the client required...

racookpe1978, I mean whole film straight line between different density: 0 and 1B parts

I saw in Film like this, (see attached file) the portion lighter than other but Idont know what happen and how to prevent it, Is it acceptabe? Could anybody help me I'm really appreciatehttp://files.engineering.com/getfile.aspx?folder=e9fb64c0-28a3-46aa-a611-48ec24aa0d63&file=1443225399066_21271.jpg

Thanks GTaw, Could you help me, which para in d1.1 say that? I'd like to refer this

Dear Sir, Anyone help me to explain RT acceptance criteria for pqr and welder per aws d1.1, the statement only refer to section 6 part C, while it has some kínds of category, 4.9.2.1 RT or UT. Either RT or UT shall be used. The entire length of the weld in test plates, except the discard...

Thanks DekDee I just wonder a statement in API 650 8.1.6 Determination of Limits of Defective Welding When a section of weld is shown by a radiograph to be unacceptable under the provisions of 8.1.5 or the limits of the deficient welding are not defined by the radiograph, two spots adjacent to...