Europe's first EPR is now producing power - Olkiluoto 3

[Shannow]

The turbine, one of the featured items produced at the site, is a behemoth, weighing in at around 350 tons. Bolts fastening parts of the shell—which contains compressor and turbine blades—are as thick as a man’s arm.

That got me really interested in the article! 350 tons! Bolts that big............

5-1/2" diameter, 39" long, Durehete 1055, UH threads, 6TPI....

For that bolt, 200lbft is "finger tight"...then we insert a heating rod down the middle to expand the stud...then rotate the nut 130 degrees to get 0.15% strain when it cools down...pic below is the 33.5" last row blades when I upgraded a 660MW (coal) to 700MW...the recent 730MW upgrade has 39" blades IIRC.

 

[OVERKILL]

Looks like they are running it up to 890MW now: