UG-36(3) defines cases when additional reinforcement is not required for nozzles. This however applies to "Openings in vessels not subject to rapid fluctuations in pressure..." Does anyone have a more precise definition? What is considered a rapid fluctuation? Is there a frequency...
Thank you very much for your replies. I have checked with the local Boiler & Pressure Vessel authority, and they have also agreed that I could assume this seat ring to be a slip-on flange, and show calculations for the geometry constraints on the lap joint, and shear stress on the fillet weld.
Table UW-12, for type (4) joint, specifies that Category C circumferential joints should not be over 5/8" thick. Is this refering to the weld leg / collar dimension of the fillet weld? Or to the thickness of the components being welded together? If neither, what does it refer to?
Thank you...
Table UW-12, for type (4) joint, specifies that Category C circumferential joints should not be over 5/8" thick. Is this refering to the weld leg / collar dimension of the fillet weld? Or to the thickness of the components being welded together? If neither, what does it refer to?
Thank you...
I have a design that uses standard pipe as a shell. At the top of the shell we are adding a very short run of a larger diameter pipe of heavier schedule (call this the seat ring), attached to the main shell by a lap joint double fillet weld (main shell fits on ID of seat ring), in order to...
Hi everyone,
I am new in the field of Pressure Vessel design, and our company is in the design process of some small vessels.
I need to find an outfit that can supply swing bolts (or eye bolts), of different lenghts (I need between 6" and 7" long from the center of the eye), either 3/4" or 1"...
ASME B16.9 table I-10 (Dimensions of Caps), General Note (2) indicates that "The shape of these caps shall be ellipsoidal and shall conform to the shape requirements as given in the ASME Boiler and Pressure Vessel Code."
Given that, if a manufacturer tells me that their cap conforms to ASME...
Thank you Greg for your input... Here are answers as best as I can:
1. Truck is for oil and gas industry, it is a Cementing / Acidizing Unit, so it carries, besides the tanks, some heavy pumps, both centrifugal and triplex type.
2. Yes, we know "quick" tends to be wrong, but we could say I'm...
I am currently working on truck mounted equipment which includes three tanks, and an Operator's Cabin, all mounted on Hollow Structural Steel... Other equipment includes piping, and some pumps. I am particularly concerned about the dynamic loading the structural supports for the tanks and...
Does anyone have any experience with flow metering in cement slurry applications? We are looking at flowrates between 50 and 500 GPM, with pressures between 1 psig and 70 psig. Flow is pure Cement Slurry (similar to Portland cement), no other solid add-ons. I have been suggested a Mag meter...
My apologies for not replying... Got caught in many other issues with this project... And unfortunately I do not have Matlab, nor have I ever used it. I tried to translate the code to actual equations but could not. So I am still trying... I do gather that you are using spring loads at the...
Regarding the DP transmitter, in order to work with such a high turndown ratio it would have to be used with some kind of variable area flowmeter, wouldn't it? An orifice plate wouldn't cut it.
The problem with this is that you require some amount of pipelength before and after, and space is a...
Thank you all for your valuable input. And once again I apologize for the lack of info: the controlled device is not a valve, but actually a progressive cavity pump with a variable speed hydraulic motor... OK, I guess the controlled device will be a valve, in this case controlling the...
