I have not had any experience with asking the code committee. I assume I follow the instructions in the code. It seems there are quite a few more that I've found since posting this.
Also Table QW-288.1 lists QW-403.32. When looking at this paragraph it seems to be mislabeled and should be QW-403.31
QW-403.32 is a change in P number.
Good morning, everyone. I just started going through the 2019 ASME IX code book and noticed what I believe is an error. Let me know if I am missing something.
Table QW-288.1 for tube to tubesheet welding procedure qualifications
Under joints it shows QW-402.32 - A change in joint...
Good morning, all. I am currently working on coming up with a welding procedure to ASME VIII / IX and API 582.
Base Material
SB-443/SB-444 Grade 1 Annealed 120 ksi
Welding Codes: ASME IX / API 582
I have been informed that the choice of the higher grade of this material was to reduce base...
Good afternoon, all. I have been doing some reading of various ASM books, technical papers, and the like but I cannot seem to find exactly what I'm looking for. Here goes.
I am trying to understand whether or not to preheat my weld coupon to above the Ms point and if I should keep it at this...
Have you tried using that FCAW wire before? I've had problems in the past using it under prolonged PWHT meeting my mechanical requirements.
Why 5G? I'm not extremely familiar with B31.3 so that might be your reasoning.
It states minimum base metal. As for the design criteria, be careful as some customers require specific joint geometry vs just an all weld metal buildup.
Off the top of my head I believe it to be a few to several thousand if you are starting from scratch. It really depends. Call up your AI and have him give you some information.
Are you sure this isn't the material requirement and not the welding requirement? As metengr states for the interpass temperature. It may need to be reduced depending on the filler that you use for your toughness properties. If you have issues with the hardness values using a 300-400°F preheat...
The steps to take will be somewhat similar to the steps taken to get your U stamp. Speak with your Authorized Inspector. In our case it is the same inspector for both U and R stamps. Your AI can guide you. It's not cheap.
HMN, our bread and butter is 4130 welding. My first question would be whether or not you are required to meet NACE MR0175 250 Vickers requirement. Depending on the part/application we preheat our PQRs at 400-550F. Normally you will stress relieve this at 1175°F for an amount of time that will...
Maybe this is why I was having problems. I reached out to Haynes, Special Metals, and so far the only one that may have it available in stock is Zapp in Switzerland. Awaiting their contact. Thanks for the information though Ed, I was reading from the engineering material spec and didn't even...
Good afternoon, everyone. I'm not sure if this is the right section to ask this question but I thought I'd give it a try. I am trying to find a sheet metal supplier of:
UNS 26455
9.4610 Hastelloy C4-C
ASTM A494 CW2M
DIN G-NiMo16Cr16
I have searched online with no luck except for one company...
So, just an update for anyone interested. I spoke with our AI and he had a chat with the head office. They said noooooope, build it to Div. 3 with a stamp or tell your customer to consider a pressure drop from 15k or use a different code.
I agree with you on this that you can't design by rule for higher pressure items. We have done some 5,000/10,000 vessels in the past with the addition of finite element analysis from a third party engineering firm for each. This satisfied the AI.
Our customer has already rejected the idea of...
Good morning, all. I am designing a pressure vessel per ASME VIII Div. 1 and have come to a snag. Page 19 UG-27(c)(1) states that when the thickness does not exceed one-half the inside radius, or P does not exceed 0.385SE use this formula.
My shell will be seamless in nature. The pressure will...
Good morning, all. So our QC department is asking me whether or not we can use bar for a studded outlet (I assume for a side wall)referencing Section VIII. I am telling them no per UG-14, however I wanted to be sure I am not missing anything that may allow us to do this.
Good afternoon all. I am updating a database for our company and would like some clarification. Does B16.48 supersede all of the API STD 590 dimensions? I've looked through the forums and a few websites and it seems like it does but some companies still use the 590 code. Specific clarification...
