I'll throuh the BS flag on that i'm afraid. Coal-fired UnitsI'm familiar with ran at much higher pressures than the nuke up river could. 2420 Throttle pressure and 1005 degree steam spinning generator at 3600 rpm for 60cycle power. nuke was 1000 throttle pressure and 850 steam temp spinning gen at 1800 rpm for 60 cyles, nuke gen had 4 poles while coal-fired had 2poles When the nuke guys came to visit they were always amazed at the raw power of the facilitymuch greater than they were used to. Clean coal tech works very well. amazing things can be done. May Man-Bear-Pig rot in hell for what hes brought the people. All about self enrichment and not a lick about actual science.
You are correct, nuke plants do not operate as high a temperature or pressure as a supercritical.
By the way, those big shiney pipes in the picture (the ones that look like corrugated bendable pipe) are actually 5-8 inches thick.
Correct. Nuke reactor output temps are in the 650 F range, far lower than a coal-fired plant. Because of that, the steam they produce is highly saturated (i.e. wet steam), therefore requiring much larger multi-stage turbines than the hotter, drier steam from a conventional boiler.
It's not the amount of steam, it is the temperature and pressure of the steam.