Even if you had water, there isn't enough of a potential difference between CS & SS to worry about galvanic corrosion. 316L is preferred over 316 with 316L welding rods. It is commonly done as MJC suggests.
Since the cladding is on the inside of the pipe, there is no electrolyte present and hence, no possibilty of glavanic corrosion betwenn the classing and the ID of the steel pipe. As for the corrsion test on the outer pipe, the only thing I can think of is they want to know the exact electric...
Michelsen:
1. Why would you choose carbon steel for seawater service?
2. Why would the system be designed to deluge water on electrical equipment?
Use potable or treated water to conduct the test or to flush the seawater out after the test. Protect the electrical equipment with shrouds or...
What I've done is a trial and error approach. Adjust the tray efficiency to match your actual input/output conditions. When you get a match, you've got your answer.
farzinchemical:
To expand on Art's point about complete information, one possible case you did not mention is gas blow-by from an upstream separator. Your vessel sounds like a LP or IP separator - do you have an HP separator upstream? If so, does the liquids from that separator go to the...
bvi:
Is there an equivalent "31.3 rule" in 31.8 or API RP1111 regarding low temperature excursions when the corresponding pressure is lower? I don't have a copy of either and I was curious.
You're kidding yourself if you think you can solve this problem by reading up on it. You need an experienced engineeer in pipe stress and finite element analysis. The dynamic effects you describe are particularly problematic.
I urge you to get help on this otherwise the consequences could be...
mytsurfer:
You posted a similar question on sockolets back in Sep 03. You even spelled sockolet correctly. You were given the nformation you asked for along with a useful URL. It took me about 3 seconds to find your original post. Can you not search the site or even remember your own question?
