I am curious (before I start a PQR for my FPQ) if there are any pre-qualified FPQ for the vertical position. I have pre-qualified FPQs for the horizontal position but I need something where we will be connecting to existing HDPE pipe and the joint will need to be fused in the vertical. The...
My project engineer has specified B31.1 for all piping, and some of that pipe is FRP pipe. B31.1, Section N, Chapter V stipulates that I need a BPS (the manufactur's instructions that give times, temps, etc.) with a PQR and a BPQ. I have a BPS, the PQR is giving me a hard time. It has always...
We just today got a drawing where 4 sample pipes are to be inserted in a carbon steel tank, The sample pipes are to be welded using C276 weld wire, which is a P43 SFA 5.14 material - we don't know what the sample pipes will be made from . The test completed its settlement test and we just...
Thanks, Ron. Due to lack of cooperation on the part of the surveyor, I have brought in another surveyor who DOES have calibrated equipment to reshoot the points/verify the points. Everything did match, but I have the documentation to back it up.
My 3rd party surveyor did not have a current calibration for the TOPCON total station he used during site layout. He did a daily check of the unit on benchmarks provided by the client. I am used to having a certificate of calibration for these units on other jobs, but am wondering if this is...
I have my answer - ASME B31.1, 2014 edition, states in Table 132.2 'Exemptions to Mandatory Postweld Heat Treatment'(pg 99) that P no 1 all groups, all types of weld, that if a preheat of 200 degrees is applied prior to welding on any nominal material thickness greater than 1" no PWHT is...
On a P1 to P1 pipe l, we have a weld to make on material with NWT of 1.375. Our WPS covers to basemetal thickness range of 1.875 to 9.00". The GTAW maximum is 1" and the SMAW maximum is 8". The WPS does not make mention of PWHT, permissible under Section IX, QW 407.1. However, under B31.1...
We have a 78" flat face flange and a red rubber gasket 1/8" thick. Total of 68 4" bolts. Does anyone have any idea of a maximum torque? A formula to calculate one? I have seen anything from 250 ft. lbs. to 700 ft. lbs. to follow the rule of thumb for the size of the bolt. Any help would be...
I have a 78" butterfly valve, total of 192 bolts. All bolts have 3-4 thread protrusion except 2. One has about 1/2" thread shy of flush; the other is flush. Under ASME B31.3, they are acceptable. Under AISC they are acceptable. However, I am working to ASME B31.1, and under that they are...
Yes to both questions, connectegr. Our instructor has given us many, many sample tests. Have done well navigating but my biggest errors are stupid ones - not taking the time to fully read the question. Have till Sunday to get out of that habit. The WIT book and workbook are very beneficial...
Halfway through this monster - I wish I had paid more attention to my science classes in high school. Have been able to navigate the code so far (but I do a lot of code referencing at work out of AWS, AISC, ACI, etc.) but that Metallurgy - that is a butt kicker!
Am preparing for the CWI exam. Have signed up for the week-long clinic, but am also studying in my (very little) spare time. Is that a good idea? Can I look at this stuff too much? Should I just take what I learn in the seminar and put it with my field experience? Anyone have any ideas?
I have a conveyor system that, while it is supposed to be suitable for winter enviroment, apparently is not; there is a great deal of ice build up. The belt plows are doing their job but it is still not enough We are going to get some deicing mist, but what else can anyone think of? This is...
I think my problem is occurring from the fact that it is metric items and we are trying to torque to a different value. Haven't heard any problems of late but that might just mean they aren['t reporting any problems.
I am having trouble on grease lines blowing. There is a torque value for the compression fittings that we cannot obtain from the European manufacturer (Dropsa). These are 26mm fittings and they just are not compressing. Manufacturer will not return any phone calls or emails at all. Can...
yes, but is it Code required? What chapter can I quote when I go back to the project manager? "Should be" is not going to make it so - if it is specified in D1.1 then I have a legitimate leg to stand on, not just an overcautious inspector.
Another individual was talking about how in the course of his carreer (military & government connected) he had always had any welds involving moment connections UT. This got me thinking-I have a number of these connections in one of our structures, and had only done the VT. I have looked at...
