The "S" in SA indicates that it is acceptable to use on pressure vessels if you're using ASME. A couple years ago we had a whole bunch of pipe that met ASTM but did not meet ASME spec. I believe it was for 106B pipe and the difference was in your allowable manganese. We had to reject something...
A good place to start is to READ YOUR QUALITY CONTROL MANUAL. There should be a chapter devoted to Engineering that you should go over.
Next, start digging into the ASME code Sec 8 Div 1 (If your country uses that).
Internal pressure in shells and heads (clauses UG-27 and UG-32).
External...
There is nothing that prohbits it by Code, at least in Asme 8 Div 1. You don't need to ask the AI either, if he says you can't do it then ask him where in the code it states it. Your QC manual may address it, but probably not.
Welders routinely will stamp their welder ID next to their welds on...
Hi Genetix,
Good question and very important. I really think it comes down to audits. Before you approve a vendor, I would do a good audit of their QC and fabrication departments and get an idea how they tackle this type of issue. You want to go with the shop that has the years and experience...
rmw: There was a QC manager + staff earlier but for certain reasons no longer are employed here. The other shop has a great QC manager and staff and I am learning from them. I am also learning a lot from the welders and fitters themselves, although I know this is risky (i.e. what if they teach...
Hello,
As of tomorrow I will be the Quality Control Manager at a U-stamped vessel shop in Alberta. My background: I am a welding/mechanical engineering technologist. I have had 2 months working in the engineering department, one month in purchasing, and about 3 months working in quality control...
Thanks a lot everyone, I appreciate the feedback. I pitched the idea to the VP and i'm going to spend the weekend making a mock-demo of how the system would work and show it to him on Monday.
qcrobert I really like the idea of you approving and releasing the material for fabrication. That way...
Hey everyone,
My company constantly has a problem with missing MTRs when putting together data packages, and I am trying to figure out the best and most efficient way of solving this problem. I have done some research and so far i've heard of two ways of doing it:
1. Electronically
Scan in...
noorazran79: that is a bit of an overeaction. in fact i was mistaken, he never issued us an NCR (nonconformance report), but he could have. we have been getting a string of these lately. the point of an NCR isn't the shut down a company, and that's rarely what happens. the point of an NCR is to...
I want to thank everyone for their responses, its really helpful and gives me some things to ponder over. As some of you suggested, I have been tracking welder ID's and NDE reports on the construction drawings (weld mapping), although this was not being done properly prior to me joining the QC...
We don't fabricate the pipe itself though, the pipe comes to us already fabricated. It DOES come with an MTR with a heat # on it. When the pipe fitters are cutting up and assembling spooling, I would assume they should be transferring that # onto all the parts they use, otherwise how do we know...
I have worked in both "engineering" (which like you say was also 80% drafting and 20% engineering) and QC, and I have to say that QC is much more stressful and demanding. However, I also find it much more stimulating and I have learned much more than I ever would doing simply solidworks drafts...
Yes it is in the manual, but it just says that it falls under QC's responsibility to ensure that this is done. So there you have it ladies and gents, when in doubt look in the manual. I know this probably sounds like a very basic and stupid question, but I have to break this down into an idiot...
Hi, I am a newly graduated QCI at a vessel shop that has a struggling QC department. There are a lot of things we are doing wrong and we get dinged for it every time the AI comes in. I want to stop this, which brings me to my question.
On the last AI visit, my colleague responsible for vessels...
Has anyone had experience implementing lean in a pressure vessel fabrication shop, and if so can you give me a few pointers?
To my mind, it would start at the design phase (specifying the right material, good joint design etc) but would also encompass the welding economics side (cost of...
It's not technically considered an NDT method, although I can understand why you might think that. The main function of the NDT methods are to locate discontinuities in a component, such as a weld bead crack or porosity. Hardness testing is more along the lines of a destructive test in purpose...
