Good morning,
I have a pipe carrying steam at 480°C and around 5 barg. The pipe is 1/2" alloy steel, while the maximum flowrate inside the pipe is 300 kg/h. Such line is uninsulated, and placed in an environment where there are defined ambient temperature and wind.
I would like to know if...
Dear Sr,
we are developing a boiler with reheater. The reheater header and nozzles (inside the casing)and the main pipe outside are in SA-335 P22. During start-up, when pressure is not yet built-up, the fluid may reach for little time (less than 5 minutes) a temperature of ~ 605°C (~ 1125°F)...
Good morning,
on ASME B31.1 Ed. 2016, A-335 P22 has the allowable stress shown in table until 1100°F.
Instead, on ASME BPVC II, D Ed. 2017, the material SA-335 P22 has the allowable stress shown in table until 1200°F.
What is the reason of this difference?
Thank you,
MM
Good morning everyone,
In a project of a boiler according to ASME BPVC Section I, Ed 2017, we have to define the criteria to place root valves of instrument (see attachment for details). The criteria I am talking about is if we shall place single isolation root valve or double isolation root...
Hi everyone
In a project I am following we are delivering hot dip galvanized cable trays for outdoor field assembly.
Of course in field the erection company will have to cut the straight portions of cable trays in order to fit with the requested routing. For every cut, there will be the...
Yes, HRSG stands for Heat Recovery Steam Generator
Thank you for the replies, I will try to take a look at ISO9223 and to see what it says
Also, the certifications letters typically do not include any independent validation from a third party; mostly they are only self-certifications from the...
Hello everyone,
I have had a doubt for a while about this issue. Where I work now (we design and manufacture HRSG) we always get from the end user the environment classification according to the EN 12944. My colleagues use this classification for almost every part of the supply, including items...
