You can absolutely do this in AutoPIPE. Changing the design pressure is about the first thing you learn to do. Modeling of jacketed piping is about as complex as it comes with pipe modeling and I'd be very concerned about accepting their work if they can't even figure out how to set the design...
1. You should interpolate.
2. You also need to ensure that your piping has not been weld repaired, which is allowed by A312 to be done with filler metal. A312 requires that it be noted on the test certs so you should be able to check that it is acceptable.
What is the cost difference between...
B31.3 2018 has allowable stresses for API 5L X70 and X80 to 400 °F in Table K-1.
At 150000 psi, relatively large sizes for that pressure, and above ambient temperature, it is not exactly surprising that you cannot use a commercially available pipe size and will need to have your piping and...
The length overtolerance of a cap screw is +0.00 for every length and size so they cannot just bottom out if the length is properly determined (see ASME B18.2.1 Table 13).
Typically I've seen the butterfly vendors provide lengths for both cap screws and studs. I'm not a huge fan of lug style...
Assuming the code is B31.3, why would the use of a weldolet on a B16.9 tee make that component unlisted? Integrally reinforced branch fittings seem to be allowed on elbows (see figure 328.5.4F), so why not on a tee? Being a listed component means that the components standard is listed in Table...
I'd ignore the 1/2" pipe. It is being supported off of the 12" pipe and will essentially be dragged along with it. No 1/2" line is going to put much of any stress on a pipe that large. This does assume that the smaller heat tracing line is coiled around the larger pipe and relatively free to...
Take a look at EIGA 13 (https://www.eiga.eu/index.php?eID=dumpFile&t=f&f=4120&token=2d624a7e3856ad72e77bdf03ce1c3b5570c6942e), particularly section 4.4. It looks like you're just above the velocity exemption curve at 4 MPa.
AutoPIPE does have a rotational support that is separate from anchors. You could also make one by using a rigid beam/pipe straight up from the pipe and then a guide with 0 gap in the rotational direction that you want to restrain.
The rotation at 100mm over 4000mm is less than 1.5 degrees...
At this point with a real expansion joint in hand I wouldn't estimate anything. Get the expansion joint data sheet from your supplier. If the spring rate is lower you will be good on the stress front. Check the displacement to verify that the expansion joint was designed/calculated with that...
I suggest you reread B31.3 section 322.6.3, particularly the first half of paragraph (a). The excluded chapters and paragraphs from the BPVC are mainly those covering certification and marking as LittleInch pointed out.
This is one of those cases where the McMaster catalog is wrong. They are just populating the max pressure with the pressure class for some reason. I purchased this blind flange recently https://www.mcmaster.com/44685k172, and received a normal stamped B16.5 304/304L blind flange.
Have you considered the low seating stress spiral wound gasket options like the Flexitallic LSI (as opposed to CGI)? They are specifically made for this low pressure application.
The issue with very small tanks, is that by the time you have made something robust and manufacturable out of metal, they are typically good for a high pressure which is why you are having issues find one that is only rated for 100 psi.
If it was the failure of a regulator, shouldn't there have been a relief device to protect the piping downstream? The relief device could have failed as well. I know the HAZOPs I participate in at my current company would not have discussed multi source failures.
I've worked on plant designs where we would pneumatically test the plant including packed and trayed distillation columns in the field. Unpacking and repacking them would be a nightmare logistically and very expensive. Drying them out after a hydrotest would also be an issue since the surface...
zdas04 - I watched the video you posted earlier and I do not understand why on slide 9 the energy released by a failure of the hydrotest increases with the pipeline length that is outside of the explosive decompression zone. Is this because all of the additional test pressure water mass is...
