Before I proceed with burst or FEA proofing, I wanted to see if anyone is aware of any methodology or equations that cover this situation in ASME.
My wall thickness under a blind counterbore is insufficient when run through a basic minimum wall thickness calc for pipe.
Ive reviewed B31 standards...
Guys please help direct me.
We are remaking an old B31.1 pipe section that had the following configuration on the sampling tap.
90 degree welded WYE 2" Sch 40S 317SS (made from 3 pipes)
welded to
4" Sch40S 317SS Header pipe.
I am good with the Header and Branch Min wall thickness and...
I have read extensively on straight length and flow conditioning relative to orifice plates, nozzles and venturi.
I cannot seem to find guidance on the following simple question.
What is the REQUIRED upstream straight length between an orifice plate and a "fitting" (an elbow for example) when...
Can you please inform me as to how I go about determining allowable stress values @ temperature for ASTM material A707 L3CL3?
I will be using this material, as specified by my customer, to make a section of, what is essentially straight pipe for a B31.3 application.
I understand section 323.1.2...
We design tanks based on general conditions supplied by our customer.
Basic Section VIII tanks with some nozzles.
My AI just recently requested a UG-22 checklist.
I am never provided with these "supplementary" conditions.
What do i tell my AI?
Am I responsible for UG-22 loadings if they are not...
Please see code text below.
I have a flow meter welded in line.
It is SA335 P91
24" NPS Sch60 Header (.969" thick)
1/2" NPT Branch Connection used for pressure sensing
750 psig
1085 F
per 114.2.1
this connection is not allowed
unless excluded by 114.2.3
My question is, what exactly is...
We manufacture pressure piping under Section 1, B31.1, and B31.3.
I can not find in any of these codes where SA-36 is EXPLICITLY prohibited. I find lots of implied text, but no smoking gun. Can anyone point me in the direction or explain to me why SA-36 should not be used for rolled and welded...
Section 1 2013 goes into effect when? How do you know?
Also, can anyone please give me the definitive procedure to know when a particular code is in effect.
With B31.1 and B31.3 it is clearly listed in the beginning:
""Date of Issuance: June 29, 2012
The next edition of this Code is scheduled...
We make specialized flow measurement piping for plants. We also hold an ASME "S" stamp certificate and do a lot of piping that is "S" stamped by our ASME Authorized Inspector. The issue is, we have 2 pipe sections now complete that did not technically go through our ASME program review process...
So i tackled making a stamped patio colored with powdered red brick color. I satisfied with everything but i do have an issue. I think the driver made my cement to wet (or i started to early!!) and the closer side of my patio is lighter than the farther side. I have plenty of powder left. Any...
When determining PWHT requirments for an olet branch connection on a pipe how is one to know what the olet nominal thickness is? Seems these dimensions are not published but are an essential piece of the puzzle when dealing with PWHT requirments (determinig nom thickness of the weld). Any...
We often supply flow measurement piping components for HRSG units. Being unfamiliar with what happens in the field we generally take our direction from the customer regarding ASME data reports. We currently have a job with 1 component being listed BEP "S" stamp and the other "BP" "S" stamp. Our...
I am trying to understand why B31.1 and B31.3 list the material prefix A (ASTM) and not SA (ASME) in thier stress tables. Can someone enlighten me on this a bit please?
Looking for some input. We do piping with coupling welded branch connections (for pressure and temperature sensing). B31.1 fig 127-4.8(F) specifically lays out welded coupling diagrams and direction (full penetration with .188 throat cover fillet), while B31.3 says coupling are ok as long as...
I am looking for some input as to how the section below is met. There is lack of experienec in my office with UT and we are trying to define a solid method of conforming to this. What types of files are used to satisfy? Video?(expensive and hard to find) Snap shots of defects and locations?(a...
I want to use actual wall thickness in my min wall calcs. Can anyone point me in the direction to find out where and to what extent I need to measure my actual wall thickness to use it legitimately in my min wall calcs. Ill be asking the MFG of pipe to UT the wall for me but i want to give...
This is driving me nuts. I created an assembly in 2010. Time goes by no issue. Fast foward to 2011 SP3 and my mirrored part is now nonconcentric. If i open in SP2 and save all is ok. If i open in SP3 or 4 and save it goes non concentric. My reseller tells me it is because SW uses center of...
We shipped a pipe section. it consisted of:
-18" 106b sch XH/105 300# Flanged, both ends, pipe spools
-one 300" long and one 150" long and they were bolted together.
At the site it was realized the 150" spool far end was not flat on the truck but rather cantilevered from the flanged joint of...
I am trying to creat a simple excel spreadsheet for my office to use to calculate hydrotest for PED work. We fabricate venturi tubes (so piping).
Per Annex 1 7.4 hydro is no less than
-1.43 x MAP (easy enough)
-1.25 x MAP and MAT
So the consideration of MAT means multiply the ratio for stress...
