Hi!
The last week we had a centrifugal water pump failure. The recirculation pump allows 10bar and 120C, bought on 2009. The system works with water at 4bar and 90C. After stopping the first pump, the reserve pump didn't started. After an hour they started and all was ok, but suddenly, after 1...
Hello,
In table A.1 of Annex A we can found the list of european standardised steels for construction of water-tube boilers.
I want to use P195GH EN 10216-2 for the tubes, and P245GH for flanges, as far as the material is included in EN 10222-2, but is not listed in Table A.1.
If I can't use...
Good morning,
I'm looking for manufacturers of A-376 tp 347H stainless steel in U.S., I don't know if I'm allowed to ask for it in this forum, but I have a lot of problems to find the material in 8" sch60.
Thank you for your help.
Hi,
When calculating the diameter of the largest finished opening I find K= 2.08. Knowing that "K shall not exceed 0.990", is it correct to say that PG-32.1.2 cannot be used? therefore it doesn't exist a maximum diameter opening?
Thank you
Hi everyone,
I want to know if you would apply a Heat Treatment after cold forming a 51mm x 4mm SA-213 t22. The tube is U bend with a radius R = 50mm. I have measured the hardness in 20 bends: Max:201HB and MIN:97HB.
Whe are using asme VIII Div.1.
Thanks.
Hello,
I have a doubt with the asme VIII div1 code.
If I apply UG-53 (multiple openings) in a cylindrical shell (a 12" tube) I obtain E=0.29 to use in UG-27 and then I have the minimum required thickness (of the 12" tube).
During the construction of this item, we've see that we need to open the...
Mínimo diámetro para el cálculo de compensación:
P D
K= ------------ P = 49.5 Kg/cm2 S = 1800 Kg/cm2
1.82 S t D = 1300 mm t = 30 mm
K = 0.6547
D * t = 39000 mm2
(FIG PG-32) dmax = 8.08 (D t (1-K)) ? = 192.2 mm
d < 1/4 Di(shell) = 310 mm
< mayor of: 60 mm...
Hello,
Does it exist a saddle calculation method in ASME I?
I'm working in a steam drum, first I worked in asme VIII div 1 ,but now the client wants the calculation in ASME I.
Thanks.
Hello,
Someone knows if I have to apply a undertolerance of 12,5% to calculate the minimum wall of a shell of sa-516 Gr.60? (is a steam drum, D=1300mm, nominal thickness= 30mm, 48.5kg/cm2, 270ºC, ASME I code) I suppose there exist a undertolerance to convert to the after forming value...
HELLO,
AS IT'S EXPOSED FROM ANOTHER POST, I HAVE THE SAME DOUBT, I ADD A PDF:
"M1Can (Mechanical) 23 Nov 06 9:51
I am looking for some help interpreting the required thickness of a semielipsoidal head with a manway. In the past we sized the head thickness based on a blank unstayed head and...
Hello!
I'm making the design with ASME VIII Div.1 of a heat exchanger (steam service) and I have some misunderstanding points.
Applying UG-31 it is necesary to use UG-27 (for shells) to calculate the thickness of a tube or pipe.
Diference between tube and shell?
But when I apply UG-27, I...
Hello,
1. I would like to know how to apply (for the heat treatment): "This requirement may be waived if it can be demostrated that the selection of pipe ..... ..... the most severely strained material retains at least 10% elongation".
I mean how to demostrate this point? Someone may show an...
