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Do steel sleeves have a number designation like bolts and nuts do? For example, I deal with SA-193 B7 bolts. I haven't been able to find any information on sleeves like that that would be known to be appropriate to use with B7 bolts.

If you need room, then a flat head may work, but it will be pretty thick compared to an ellipsoidal head. You can probably build a simple setup in Compress or PV Elite to determine which one you like better without having to do a full detailed model.

The AI asked if the valves were boiler code, then his question was brought to me. I typically deal with Sec VIII, so I had to look it up and discuss with the inspector manager and we settled on the above answer that the valve just conform to B31.1 and B31.3. For future reference, I wanted a...

Does this mean that the valve withing the administrative jurisdiction requires "mandatory certification by stamping the Certification Mark with the appropriate Designator, ASME Data Forms, and Authorized Inspection"? At my plant, there is no additional stamping or whatnot, but the valves are...

Thank you for your response, but does that dark line include the valve, or stops at the valve?

Typically exchangers are designed for full differential pressure meaning that the tubes can handle the full external pressure of 6.7 barg on the shell side without any pressure inside, and full internal pressure of 6.9 barg with no pressure on the shell side. I haven't heard a request like that...

ASME Sec I, PG-58.5 states "Miscellaneous piping shall include any piping, not otherwise described herein, that extends to or from the boiler proper up to the first stop valve or instrument". Do the requirements of the mandatory certification and ASME Data Forms include the valve or just the...

The company I work at is a member of MTI, but i'm a nested contractor, so I'm not sure if I would get the benefit of their membership. Also, I never new NDT people had a society, but that could be good to look into. I work very closely with inspectors and it's usually their inspections that...

I work at a chemical plant in the United States as an engineer who deals with all pressure vessels, piping, tanks, any equipment that doesn't typically move. My job is to tell people how to fix stuff that breaks/leaks, let them know how long it is expected to last before it should be...

The guy that developed WRC538 was pushed to create a website since he wouldn't provide tabulated numbers for the graphs he provided for PCC-1. This website should help you some: http://wrc538.com/wrc538/wrc-bulletin-538-calculation?user-unit=Imperial

I don't see any discoloration or hazing. Thickness readings are taken by UT and they all appear to be in line with the nominal thickness of 14-18mm. The deterioration mechanism should be the sulfuric acid process which, per the corrosion resistance brochure, shows < 2mm penetration/yr...

The glass column already exists. It comes in sections about 1 or 1.5 meters long and is supported by an external steel structure that looks like scaffolding. The owners of the column want to know if they should order replacement sections based on thickness, but from what I can currently...

I have a 1000mm diameter column made of borosilicate glass 3.3. It is not glass-lined. It is actually just glass. Process is sulfuric acid. Design pressures and temp = -14.5 psig and 5.8 psig @ 392°F My question is: How do I go about determining how thin the column can get before it...

Thanks y'all. I wasn't sure if there was any general guidance like there is for FRP flanges. I'll contact those two manufacturers and see if they have any additional information.

I can find very little information for glass-lined and PTFE-lined pipe flanges. I have reviewed my plant's procedures, but they do not reference any standards outside of the company. Do any of you have any experience with assembling glass/PTFE lined flanges, and/or know of any standards that...

Good question. It does not appear to be built to any real code outside of company standards. The nameplate shows the year built as "1961/1984". Some other equipment out here is even older and a few are even made from giant WW2 German artillery barrels.

It's washed out a good bit on the drawing I have, but it looks like the yield strength at 68°F is 440 N/mm², at 392°F is 410 N/mm². I'll go with that information.

Hi all, I've been tasked with providing torque values on some studs in an old German-made high-pressure vessel. Do any of you have any information on the yield strength of a 24CrMo5 stud at 392°F, or could possibly point me in the right direction to a code that states the information, please...

All, Thank you for your responses. I was able to get a hold of the vendor since posting on here and received a little more information. From the vendor sales rep: One vendor engineer responded with, "No, there is no installation instructions, they just weld it in place." When asked if the...

Hi all, and happy new year! I come to you today to ask for any assistance or knowledge on the use of thimble plugs for plugging a leaking tube in an exchanger. I cannot find any information about them online and am not sure where to look in any code books. I have attached a drawing of one and...