The problem is that before the failure, the economizer was located after the pump. Then if some temperature increase occurs, the water was cooled in the line before reaching the pump. I don't know why they changed it, because they didn't verify the allowable temperature in the pump.
I read that...
Another picture. Can someone help me to understand what happens? http://files.engineering.com/getfile.aspx?folder=4e4d19d8-5cf4-4c2e-aab0-709a9eccdad5&file=DSC_0011.JPG
Again a pictur. The pump was made according din 24255http://files.engineering.com/getfile.aspx?folder=947e5dce-c51c-4b65-9b4c-81a1b734993d&file=DSC_0019.JPG
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
Finally I told to the workshop to make the bends without a post Bend Heat treatment, but amazingly, they make it. They have aplied a 925ºC 30min, with heating rate: 180ºC/h (unrestricted heating rate to 300ºC) and air cooling. I know this is not your recomendation. That's why I want to ask if...
Aniseng, this is for a 48 bar 260ºC heat exchanger.
Tomorrow I will decide what to do, but it seems its not a critical point due to hardness is below the max for this material. Why it can be a stress corrosion cracking? Hydrogen sulphide? in this case it will work with water inside and flue gas...
Thank you very much for your opinion, but I have more questions. About the heat treatment. I have asked a workshop that makes heat treatment and they said to me I have to make a normalising of the bends (30min). I saw in epri specification for 22 grade material...
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...
Oups, I have to write in english.... but I missed this comment... Wich is the difference between compensation and reinforcement, I mean, first I have to verify if there is need of compensation, and then I know if I have to reinforce the opening, isn't it?
