Institute of Applied Energy: Corium Could Be 2 Meters Deep into Concrete, EX-SKF, Nov. 30, 2011:
TEPCO’s worst-case scenario (here and here) pales in comparison with the analysis by the Institute of Applied Energy, also presented on November 30 at the workshop held by the Nuclear and Industrial Safety Agency.
From what Yomiuri Shinbun reported (01:01AM JST 12/1/2011):
The analysis done by the Institute of Applied Energy commissioned by the national government, 85% of fuel dropped to the Containment Vessel in Reactor 1, and 70% of fuel dropped to the Containment Vessels in Reactors 2 and 3. The researchers at the Institute pointed out the possibility of the damage to the stainless-steel shroud that surrounds the fuel core, and of the corium having eaten away the concrete floor of the Containment Vessel up to 2 meters deep. Because of that, they also said it was possible that the RPV got tilted.
See EX-SKF commentary here
Published: November 30th, 2011 at 4:37 pm ET
- Report: If fuel melted through reactor, it would react with concrete floor of primary containment — Could add significantly to total radiation release May 23, 2011
- NHK: “This is a very severe accident” — Nuclear fuel at Reactor No. 1 may have melted through 65 cm of concrete… Only 37 cm at thinnest point (PHOTOS) November 30, 2011
- Study? No temperature readings for concrete floor — Outcome based on Tepco “projections” of decay heat & uses computer model from Westinghouse November 30, 2011
- Japan Nuclear Experts: Fears corium not totally covered in water at Reactor No. 1 — May only be 15 inches deep, even lower than No. 2 May 22, 2012
- Melted fuel in Reactor No. 3 appears to have burned through pressure vessel — Loaded with rods containing plutonium May 18, 2011