only other comment to add is how easy it is to construct; the welder might not be too happy about trying to get an electrode into a crevice and somehow make a compliant but weld with a mirror and an electrode bent at 70deg to fit... I'd always run something like this past a welder to make sure...
I've seen the Emerson product deployed, works well, but cost is likely higher than the i-alert system.
https://www.emerson.com/en-au/automation/asset-performance-management/asset-monitoring/condition-monitoring/online-condition-monitoring-mechanical-assets
There is probably half a dozen...
I guess there are 2 issues here, 1) Contract acceptance 2) Plant performance., but I'll preface this with a few points
A) From my experience with CSCC -> It's not an exact science, the NACE curves should be considered guidelines with quite wide bands. Depending on the fluid and other...
I did something for a trial in a furnace once ~ 1100 C.
Still used B31.3 / 31.1 principles, but
1) Tracked down material properties at that temp, and used the Su/3, Sy/1.5 criteria to determine an allowable stress
2) Looked at creep data (in my case was short term service (days to weeks for...
Here's a random paper that describes it fairly well. https://www.flowconditioner.com/wp-content/uploads/2020/07/FFC-Whitepaper-3_CPA.pdf
In practice there is a boundary layer, you will never get an equal velocity profile across the full cross-sectional area, however you can improve it /flatten...
Hi Team,
I went down a rabbit hole a little while ago about using instrumentation to prove a centrifugal pump is primed. Intent is to have interlocks or alarms to prevent dry running of said pump after a maintenance changeout and / or suction piping lineup changes. I'll note the question for...
You're unlikely to be able to model this in any meaningful way. Unless the specific brand of thumbscrew supplier has completed testing to determine the allowable 5 year vibration level on a faster setup close to your proposal (which is highly unlikely).
In practice, I'd suggest applying a...
In my experience, not a problem, extensive experience with hard slurry like scales that form inside pipes, sometimes several inch's thick. This is assuming you are measuring from the outside. If you are measuring from the inside, it will be a problem.
I haven't seen a setup like this in practice, but I don't see it being any different to a vertical submersible pump, that is common in slurry process sumps where the entire volute is submerged for the same reason. I agree a foot valve is Maintenace nightmare in a slurry service and agree with...
I just had a look, and I'm thinking that the Australian Commitee copied the formula wrong :S, I have come across that before in some obscure clauses.
From a fundamental point of view, the basis of these calcs is that a pipe will try and "straighten out" when subject to internal pressure, and as...
I'd suggest also not to rule out product induced cracking. When I First read it, my mind when straight to stress corrosion cracking, which usually presents itself as traverse cracks, always initiating from the inside surface. In my industry this is a key damage mechanism, in particular from...
Google tells me that
ASTM A668/A668M-23
1.6 Appendix X1 lists the current classes corresponding to the various classes of Specifications A235, A237, and A243, which have been superseded by this specification.
Maybe start there
If you need to original, I had a look at my organization's...
The thing to keep in mind is that pretty much all ASME flanges were designed based on Trial and Error / Testing around 100 years ago give or take, not on calculations. So you are unlikely to find an answer based on calculations*** for the question "At what pressure will it start to leak"...
MY thoughts
I'm assuming this is actually a torque arm / physical thing, and not a calculated value via a VFD / VSD / VFVV Drive
Things it will probably tell you;
1) Long term efficiency trend, i.e power output vs electrical power input, if the efficacy drops off, could be a sign of some sort...
It's designer choice.... but having being in operating plants for a long time, the most "useful" version is to define 0 Deg as the manway door / maintenance entrance and work clockwise from that, when looking down from above. (when doing tank inspections, very annoying to have to find plant...
what I've come across
Practical considerations
1) Ease of maintenance for things that a regularly un-bolted
2) concerns over corrosion of studs / flange itself (can be somewhat mitigated by coatings / material choice)
3) Ease of leak identification if left un-insulated.
Technical / Design
1)...
Not reliably, technically it could work, but the temp change is orders of magnitude lower than background noise levels (think issues like different surface colors, sun vs shade, and a whole host of other factors related to how thermal cameras work). But have seem it done extensively to locate...
1) General good practice is to ignore the weld overlay in calcs. I've seen plenty of pipes and vessels with weld overlays and have never seen anyone take credit for its thickness in the pressure boundary calcs, it has always been treated as an extra corrosion allowance. *There maybe some...
My experience (although with smaller diameters) is leaks in RTJ's are normally related to thermal expansion issues and/or external loads on the flanges.
However, if you have the chance, I'd cut out the RTJ flange and put in some RF flanges with a spiral wound gasket, or even better as you...
