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What is the definition of welding operations? I have seen it used in some codes but not defined. Do any codes define it? I believe it is just the process of welding or does it include the grinding and other activities between passes as well?

What is the definition of welding operations? Do any codes define it? I believe it is just the process of welding or does it include the grinding and other activities between passes as well?

Apparently not. I have more than 1 inspector challenging me on this and have nothing definitive in the codes to refer to.

Thanks metengr. Do you know where in the construction codes I can find the information stating that welds for a lot should only include those that are permanent with the piping system.

We are constructing to B31.3 and have determined what we are going to define as a welding lot. We have a pipe spool in one of our welding lots that has not been fabricated correctly to the drawing. We need to cut out several welds to correct the piping spool. Should the cut out welds be...

Can I use a low temp weld procedure for A106 material?

Why is it good industry practice to turn a valve handle back a half a turn from the fully seated position?

Are there any codes out there that state when welds should be covered with welding blankets to help slow the cooling rate?

I have a hydro test in which I have to test up against a valve. Problem is the valve is passing and the next valve in the line is a long distance away. Any suggestions?

I must be getting bad information. I did find the 50 ppm in Norsok L-004 so thank you for that.

I have been told that there is NACE documentation that states up to 100 ppm chlorides for test media is acceptable when hydrotesting stainless steel. I have searched the NACE MR0175 and have had no luck finding this information. Can someone point me in the right direction?

Looks to me like the code is indicating that NDE testing results and NDE personnel qualifications are all that is required to be kept for 5 years.

346.3 states records should be retained for at least five years for examination procedures and examination personnel qualifications. I would like to get some clarification on "examination procedures" and "examination personnel". What documentation should be included under these categories? Does...

Although the code doesn't call for it on P1 materials it seems to me that it would be good practice to perform NDE after PWHT. Cracking can occur up to a couple of days after welding so if a joint was welded and then a few hours later NDE was performed and PWHT wasn't performed until a couple of...

Thank you for confirming that B31.3 specifically does not mandate final NDE after PWHT for carbon steel (P No. 1) pipe. However, it does state that leak testing should take place after PWHT. What is the reason for leak testing after PWHT?

Most companies require NDE to be performed after PWHT for P1 materials, however, I cannot find this as being a requirement anywhere in B31.3. I find it interesting that B31.3 states that leak testing should take place after PWHT (implying to me that soundness should be checked for for after...

Is there a difference between heat codes and heat numbers? I have an MTR for a fitting that has both a heat code and heat number and they are different numbers for the same fitting.

B31.3 331.1.3 says that heat treatment is required when the thickness through the weld in any plane is greater than twice the minimum material thickness requiring heat treatment. What is minimum material thickness referring to?

Can someone explain what shadow shots are and where they would be useful?

Is there anything in any of the codes that disallows the welding of dogs and pullers onto pipe? If so please reference. My understanding that this is acceptable if done right at the bevel. However, why couldn't a welder weld dogs or pullers on 2 or 3 inches back from the bevel as long as the...