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found this on the italian forum of betasom (www.betasom.it)
although not directly related to modelling, it might be interesting.
although not directly related to modelling, it might be interesting.
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Very intresting stuff there. I
Very intresting stuff there. I always thought that Russian plants had a positive temperature coefiecient of reactivity making them a bit more unstable and less self sustaning. Ive also been searching through to see what they used as primary coolant. Anyone find it in there? I cant believe they used stainless steel in their RX either. Everything they made seems to be very over engineered aswell.
HAve you read this Wayne? -
I downloaded and printed the
I downloaded and printed the whole thing at work.
Around 90 pages or so.
I am very near being settled again in my new area of operations
I am now located 5 minutes from NASA Houston, and 10 minutes from seawater.
Shortly, I will get caught up on quite a few things, including this subject, of which I did talk to the submariners about while I was over there last year.
Interesting download. Thanks!!!Comment
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Ive also been searching through
The vast majority of the Russian submarine reactors use water as coolant/moderator (pressurized water reactors-PWR). A minority of their reactors used liquid metal (lead-bismuth) which enabled those units to operate at higher temperatures, lower pressures and greater power density than PWR reactors.Ive also been searching through to see what they used as primary coolant. Anyone find it in there?
The first Soviet liquid metal reactor was installed in a modified November class submarine. All of the Alfas had liquid metal reactors. ALmost all of these reactors developed major problems with collant "freezes" or other issues with liquid metals.Comment
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Minor correction on the Alfas.
Minor correction on the Alfas. The 705K models had water reactors. Sergey quickly corrected me on this. To an Alfa officer, there is a large difference between the two.
As in interesting sidenote, he stopped an electrical fire reactor related on K123, and on surfacing caused a fleet alert as they only had a transmit code for a submarine in severe distress, even though the immediate problem of the fire was solved. The whole fleet in the area rushed to the crippled Alfa.
You would think he would be a hero to the Russians. Yet he is only another face in the crowd in the Ukriane.
It has been a pleasure and privilage to listen to their stories while I was over there.Comment
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Interesting. The Bellona Foundation has
Interesting. The Bellona Foundation has both the 705 and 705K with liquid metal reactors. See:
Also, there were two reactor designs, but both appear to have been liquid metal based]both using an lead-bismuth solution[/b] for the primary cooling stage, and both producing 155 megawatts of power.
The OK-550 plant was used on Project 705, but later, on 705K, the BM-40A plant was installed due to the low reliability of the OK-550. While more reliable, BM-40A still turned out to be much more demanding in maintenance than older pressurized water reactors. The issue is that the lead/bismuth solution solidifies at 125 degrees C. If it ever hardened it would be impossible to restart the reactor, since the fuel assemblies would be frozen in the solidified coolant, so whenever the reactor is shut down it must be heated externally with superheated steam. Near the piers where the submarines were moored, a special facility was constructed to deliver superheated steam to the vessels' reactors when the reactors were shut down. A smaller ship was also stationed at the pier to deliver steam from its steam plant to the Alfa submarines.Comment
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Tom,
You are correct. I
Tom,
You are correct. I should not post early am without coffee!! The 705Ks did get the newer reactors. I recall Sergey telling me about the special docks as well. The fire on K123 put the reactor in jepordy of freezing(part of his story). Later, the powerplant was upgraded. But only after being out of service for quite some time.
By the way, someday when we meet,remind me tell tell you something about the K123 that I can not post or email
Another interesting footnote. One of the Alfas was slightly faster than the others.Comment
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