Low pump allowables can be a nightmare to some. You can burn a lot of hours trying to qualify these loads and maybe add more expenses by buying more pipes & fittings.
Why waste time and money trying to qualify against 1xAPI if you can qualify against 2x or 3x API?
Hello all,
This might sound like a silly question for most of you but I've always wanted to understand how is the pump nozzle allowable loads gets established? Is it based from the strength of anchorage to the foundation or from the strength of the nozzle/flange (connected to the pump body)...
bvi,
I was given the value of 4ksi @ 1050degF which is what was used from the copied job. I have no idea how it was obtained. I'm still trying to find out.
Ross,
The project we are doing is a 470MW 2085psi/1050. The main line just before the turbine stop valve was designed with an end pipe...
We are cleaning the steam piping that runs from the boiler up to the turbine which is several hundred feet long.
I have asked the system engineer who spec'd the temporary piping and it looks like he could provide me the data I needed based from previous projects although he could not explain...
Ross,
The cleaning steam condition varies as per the individual line or common header to be cleaned. But it appears that a section of the temporary carbon steel piping (between the CS/P22 interface up to the first temporary desuperheater) will be subjected to a condition up to 1022degF & 80 psi...
jt
I have been asked to work on the temporary steam blow piping for venting steam to the atmosphere during the cleaning of the main & reheat steam lines.
The temporary piping material will be A106B but the permanent piping will be all made of P22, for the reason that you've already mentioned...
Hi all,
How can I get (and maybe raise) the carbon steel’s allowable stress for the purpose of steam blow piping stress analysis? The temperature is in excess of 1000 degF.
