I'm running calculations to re-rate our carbon steel hydrotest chambers. I have UT wall thickness measurements. These chambers are very long (4 to 5" pipe, 100' long), so any scale that might be on the ID of the chambers was not removed. Would scale throw off the measurements, or would the...
Does anyone have experience with RTD elements that use heavier gauge extension wire than that which is typically used?
I have an application where customer has specified 18 gauge wire where our standard is 22-26 gauge wire. We are having more difficulty with calibration than we typically do...
Hello All. Non-piping engineer here.
I am trying to determine what airflow I have through a section of pipe attached to what we call an exhauster. Searching for exhausters online doesn't come up with much, so I don't know how common they are or if they're known by some other term. Our...
I recall seeing in either ASME SEC.VIII_DIV.1, B31.3, or B31.1, if I recall correctly, an allowance for a 10% reduction in design temperature for flanges that are on nozzles. I've read through the sections where I'd expect to find that in each, but cannot find it. If anyone could point me in...
I need to test a welding sample of pipe to see how deep into the wall the HAZ extends. Our testing facility can do hardness testing, but not etching for seeing microstructure. How accurate would hardness testing be to determine HAZ depth?
If it can be done well enough, what precautions should...
From searching posts on this forum, I gather that there is no particular source for filler metal selection for dissimilar metals, and is left to designer discretion. I understand that the selection of filler is usually based on the higher strength material and chemistry should closely match...
I am trying to find the allowable stress value for Inconel 800H @ -49F. For ferrous materials, there is General Note (e) for table 1A in II-D.
"(e) Stress values for -20°F to 100°F are applicable for colder temperatures when the toughness requirements of Section III,VIII, or XII are met."
I...
I've created WPS's for butt joints where there is a buttering layer on one end of a base metal that gets PWHT and then welded to a 2nd base metal that needs no PWHT. ASME BPVC SEC IX, QW-283 seems to be written with this orientation in mind; at least when I read QW-283.2.
I now have a job where...
I've created WPS's for butt joints where there is a buttering layer. ASME BPVC SEC IX, QW-283 seems to be written with this orientation in mind; at least when I read -283.2.
I now have a job where I need to put a 4" x 6" x 3/16" alloy 625 butter pad on the OD of a P5 pipe to then weld...
I have an existing ASME CODE-U stamped vessel that I need to weld an Alloy 625 butter pad on 4” Sch.80 P5 pipe using GTAW for later welding onto them tubeskin temperature sensors.
Referring to ASME BPVC SEC. VIII, DIV.1 table UCS-56-4, general note (b)(1), PWHT is not required for...
Due to several mistakes, I have some components made from 304/304L (welded with ER308L) went through PWHT at 1325F for 2 hours, cooled slowly to 800F and then air cooled. I understand that at this temperature, austinitic stainless steel can become sensitized. From what I've read, the amount of...
I have a temperature sensing product that has a block at the end to be welded to typically the OD of pipe or tubing to measure the temperature of the fluid inside. The pipes are pressure containing and are ASME code vessels, but there is no pressure differential across the welds at the...
When a person works for a large company, frequently a collection of the standards used in the industry will be maintained for use as needed. These standards can be somewhat extensive; ASME BPVC (and standards referenced by it) and ASTM come to mind. When one goes into contracting or...
Hello all,
My in-laws are having a home built that is under construction, with framing, plumbing & roof completed & windows & doors installed. It was noticed during a 3rd party inspection that it appeared that post-tensioning of the slab was never done. In digging into it, this was confirmed...
I have a project with a customer requirement of FN between 3 & 10 for the combination of 347SS and 310SS using ER309L filler. At 1st glance, I thought that would be easy to meet since it's a common range for Austinitic SS, but looking further into it, I see threads in this forum stating that...
Is it possible to perform Ultrasonic testing of the RJ groove face? We have some flanges that have a defect in the groove that looks like delamination, as if it had been machined incorrectly, built back out with weld filler, and then remachined. I want to verify if this is the case with UT...
Apologies in advance for the double post (slightly reworded). This question was originally posted in the ASME (MECHANICAL) CODE ISSUES section, but didn't get much traction. ----------------------------
Our company has been asked to provide a temperature measurement assembly in Inconel 625...
Our company has been asked to provide a temperature measurement assembly in Inconel 625, Grade 2. I find this grade for ASME SB-444 & -446, but not for SB-564 in ASME BPVC SEC. IID. I had informed the project managers that we would not be able to meet this requirement, and that additional...
My company has a customer that requires us to provide them the native PVElite design files that I used to run calculations on an assembly designed to ASME BPVC SEC. VIII, DIV.2.
This is the 1st time that I've run across this situation and am reluctant to provide them. I have already provided...
Referring to ASME B31.3 Table 302.3.4, there are several different joints listed. What would be the most typical joint used if welded stainless pipe was ordered in the USA? Sizes are usually in the 1/2 - 3" range; schedules 10-160 range.
Thanks.
