Hi guys,
I'm building a Mathcad sheet for designing top head lifting lugs using the method on Pressure Vessel Design Manual - Moss 4th ed. I am having some trouble with the units.
On page Procedure 10-6 (page 693), when calculating the Pad Eye Weld, i'm getting strange units.
the formulas...
Hi,
I was looking at the internal piping of a Liquid Oxygen truck (picture in annex). I noticed these formings and bends of the piping and some questions came to my mind.
(https://files.engineering.com/getfile.aspx?folder=b0aa845c-dbbe-4aff-b4cc-b9a18f9c9785&file=20181009_084626.jpg)
1- What...
Hi,
Ambient Vaporizers are equipment used to vaporize liquified gases. (Figure: https://www.praxairdirect.com/Industrial-Gas-and-Welding-Information-Center/_images/_cylinders-tanks-and-gas-systems/Ambient-Vaporizers.png). (Input temperature is about -180C)
I have some design examples and am...
Hi,
I'd like some advice on performing cold stretching for a vessel intended for cryogenic storage (ASME VIII-1 Mand App 44). I will list some items for discussion.
1- Pc (cold stretching pressure) is said to be between 1.5P and 1.6P(inclusive). Do I need to keep this value constant during the...
Hi,
I'm designing a storage vessel for R717 refrigerant.
Usually when I design those I specify normalized carbon steel (usually 516gr70N)and PWHT, and also recommend that if possible the addition of 0.2% of water, all that to avoid stress corrosion cracking.
All vessels I've designed for...
Hi,
I'm studying ASME XII which is very similar in many aspects to ASME VIII-1. During my studies I came up with some questions hope you could provide me some help. There is a picture of the load combinations attached from (1-1.4).
1st. I'll treat the vessel as a beam, so in order to account...
Hi,
I`m trying to figure out two steps on the design of support saddles using MOSS`s Pressure Vessel Design Manual, I`m using the 4th edition,
On Procedure 4-11, pages 270 and 271 (Page 181 on 3rd edition), in order to determine the baseplate thickness it first determines the bending moment...
Hi,
I've been asked by a customer to design an atomspheric tank for process use. The tank is vented to the atmosphere on the top part so it is atmospheric pressure. Only load to be considered than is hydrostatic pressure due to the fluid.
The dimensions are
Diameter 3800 mm
T/T Height 6000 mm...
Hi Guys,
I'm a junior engineer
I need some help understanding some principles on the aplication of a differential pressure gauge to measure liquid level on a CO2 tank. (the tanks operates at 16 - 24 bar for co2 storage). Probably is a very easy question, but I could not figure out myself...
Hi,
I need some guidance on assessing some local loads on a torispheric head.
It is a vessel for cryogenic Argon storage, for those who are not familiarized with it, it consists of an stainless steel vessel inside of a carbon steel vessel. The space between the vessels is filled with a powder...
Hi
I'd like to ask you for some inputs on this problem I'm having.
I've done some axle weight load distribution calculation before for some trucks with two axles. However this time I've been asked to perform it for a tanker trailer truck, which is a tractor unit (1 steer axle at front and two...
Hi,
First of all , I'm a fresh mechanical engineer so forgive me any "unacceptable" mistakes. Also english is not my first language, but I'll try to be as clear as possible.
Recently I came across with a semi trailer tank for the transport of bulk liquid oxygen (ie operating temperature ~...
