I didn't think they had malfunctioning sensors at TMI, just a failure to understand their meaning. They didn't consult a steam table to realize that the pressure and temperature they had were for steam not sub-cooled water. Because of this all PWM plants in the US now have a subcooling...
Hydrogen is phenomenally easy to ignite. With most fuels it is effective to control ignition sources to prevent explosions. With hydrogen it is irrelevant. You must prevent explosive mixtures from forming because minute static discharges from airflow can ignite it.
I am going to the main page:
https://www.physicsforums.com/
It will work for a while if I clear the cache and then it will quit on my next visit. I've just started using private mode and then it works fine. Private mode doesn't allow websites you are browsing to see your cookies so I'm sure...
The CANDU design can stay in operation after a grid disconnect. They stay at high power at first to avoid problems with Xenon instability. The generator is only making enough power to meet the needs of the auxiliaries and the rest of the thermal energy is dumped into the condenser by steam...
No. The pipe routing in a BWR and a PWR are quite similar. The pipes are big and expensive and the owner of the plant doesn't want to buy more than they have to. They are around 3/4 m in diameter and there are 4 in parallel. 70 seconds of pipe would be an incredible maze.
The biggest...
Anyone else having a problem with PF in firefox? It works fine in IE (but I hate IE...)
When I try it in firefox I get this message:
Method Not Implemented
GET to /showthread.php not supported.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument...
I think we have multiple uses of the word "airlock" meaning quite different things. At the entrance to the reactor building there are double doors forming an airlock that prevents disruption of the normal airflow pattern to prevent undesired contamination movement. These are your typical...
I was incorrect at stating it is N-17, thanks rmattila.
The N-16 is the majority of the immediate dose since the high energy gamma penetrates the piping. N-17 is a concern over time because it slowly activates the metal of the piping and turbines.
The N-16 is extracted at the condenser...
Not necessarily a tightly closing door - they are just high quality ordinary security doors. Plants rely on positive airflow from the ventilation systems. Airflow is arraigned to flow first to areas people will occupy and then is ventilated out from the areas of highest contamination.
All...
No, not even close. The airlock is for going into primary containment. The secondary containment and the turbine building are ventilated to the outdoors.
The turbine is not normally approached under power due to gamma from N-17. It has a bioshield around the turbine and main steam lines...
The IC is under reactor pressure all the time. If the exchanger or any associated piping were to spring a leak the only thing to stop the flow of reactor steam would be the isolation valves.
The inside set of valves is only closed in case of a leak. There is a mass balance calculator that...
Thank you tsutsuji
You middle diagram could explain why the IC wasn't able to operate after the tsunami. It states that the IC received a isolation signal so the AC valves inside containment were commanded to close.
Since they are inside containment they are impossible to open...
There are two valves in the return line. There is one outside containment is DC operated and normally closed. There is one inside containment that is AC operated and normally open. The inside one is only closed if there is very high flow indicating a ruptured pipe.
The valve outside...