335.1(c)refers to the design plane when talking about flange misalignment. What is exactly the definition of design plane? Is it the plane of the mating face?
Customer wants to put a slot on a 50" long 3/4" SCH40 pipe that is about 30" long and .25" diameter. I told them that this will take away its B31.3 compliance, but now they need proof in the book. Will slotting the pipe take away code compliance? How can I prove this? The design pressure and...
Is it acceptable to drill a hole into the neck of a weld neck flange and put a branch connection if the reinforcement is sufficient? The code of construction is ASME B31.3 and the flange is ASME B16.5. I assume this isn't allowed.
Hi,
Please see photo of a 2" 600# RFWN flange surface. This piping unit is intended to be built to ASME B31.3 and the flanges meet ASME B16.5 which B31.3 references. A spiral wound gasket would be used to mate to another flange.
My question:
Does having weld metal on the flange surface...
This unit shall be built to ASME B31.1. See the picture that shows the spool piece . The small flange is a socketweld and the larger one is a blind flange. There is an intermediate small pipe. I want to know if the distance between welds is an issue. If the closeness of the welds is an issue...
SnTMan,
We sell a lot of instrumentation that is usually asked for B31.1 and B31.3, but recently we received our U and UM stamp certification.
Cost matters if you sell a bunch like we are. In fact, it may be cheaper for the B16.11 plug. If so, I'll look into it and make the B16.11 a standard...
Thank you all for your help
Do I need the fitting to conform to B16.11 in order to use it on a Section VIII vessel? Or can this part qualify as a threaded rod or bar? The plug I have now is a solid piece.
I'm trying to avoid buying a B16.11 plug if I can
I meant to say that I'm having trouble with the circ. joint calculation as shown in the formula above. It's giving me a value of -4,220,020psi. The formula allows this because the denominator becomes negative and really small. How can I find the pressure rating if it's giving me this negative...
Designing a vessel to Section VIII Div. 1 and I need to calculate the pressure rating of this component.
It says in B16.11 that the pressure rating shall be computed as straight seamless pipe of equivalent material.Straight pipe MAWP is calulated in Section VIII Div.1 under UG-27 where it...
Looks more like an ellipse for most extrusions. Would taking the average radius of the ellipse be good practice? The formula is Average Radius(Ellipse)= SQRT((A^2+B^2)/2), where A is the central, horizontal, transverse radius/semi-major axis and B is the central, vertical, conjugate...
Two more things:
-Please look at my attached image of how I'm measuring the radius (I took a picture and used AutoCAD). It is difficult to choose where I start and end my arc that I create to determine my radius. There are multiply radii to choose on a single side. What radius do I pick?
-Do...
Hello,
It states that hx (height of extruded outlet) must be equal to or greater than rx (radius of curvature). There seems to be a gray area in determining the hx. Can I count the weld as part of the height of extrusion?
Thanks...
We're doing extruded outlets instead of a pipe to pipe saddle weld now. From what I gathered, ASME B31.3 Paragraph 304.3.4 is the only paragraph that I need to use for calculations. Those are reinforcement calculations.
The extrusion process thins the pipe at the saddle and stirrup a little...
We make magnetic level instrumentation for storage tanks and pressure vessels and are wondering if S-stamp certification is possible.
1. After reading the Preamble, is it correct to say that our instruments are classified as boiler external piping?
2. From what I'm gathering, the technical...
