via ENENews.com / Sep 18, 2013 / We have been conducting an on-site inspection for seismic safety evaluation on the exhaust stack for Units 1 and 2 at Fukushima Daiichi NPS. Today (on September 18), in the inspection, we found fracture-like traces on steel members (diagonal bracings) of the exhaust stack (pictured).
Since the area around the exhaust stack includes a location with a high dose rate, we will start a detailed investigation after examining how the investigation should be conducted.
The exhaust stack in question has been out of use. Neither abnormality in the plant data (the RPV bottom temperature, the PCV internal temperature, etc.) nor significant change has been found.
This incident will be explained in the regular press conference to be held today (on September 18).
Original Source: Fukushima Daiichi NPS Prompt Report (Sep 18,2013)