Graphic
Wear and tear at San Onofre
High vibration and other issues degraded about 8.7% of the tubes in the replacement steam generators at San Onofre, and led to a leak of radioactive steam in one generator, according to the manufacturer of the generators.
![Wear and tear at San Onofre Wear and tear at San Onofre](/media/towergraphics/towergraphic-e470e7a3-c3e3-420d-ab3f-575b1991229e.jpg)