Analysis by the Japan Nuclear Energy Safety Organization (JNES) has revealed the possibility that the water inside the Containment Vessel of Reactor 1 may be only 40-centimeter deep, despite 6 tonnes/hour water being injected [into the Reactor Pressure Vessel]. The water level inside the Reactor 2 Containment Vessel has been measured by an actual survey to be about 60-centimeter deep. It shows how severe the damages to the Containment Vessels have really been.
There is also a fear that the fuel debris [corium] may not be completely submerged in water. But the JNES researchers say, “The temperature inside the Containment Vessel is not that high, at 30 degrees Celsius. The fuel debris is considered to be submerged and cooled.”
- There is a hole several centimeters in diameter on the pipe that connects the Containment Vessel and the Suppression Chamber
- The location of the hole is about 40 centimeters from the concrete floor of the Containment Vessel
- The injected water is leaking from the hole in great quantities
- There is no water [in the Containment Vessel] above the hole
New York Times on the JNES: The Japan Nuclear Energy Safety Organization, which is supposed to provide a second layer of scrutiny, is understaffed and largely an advisory group. Masatoshi Toyoda, a former vice president at Tokyo Electric who, among other jobs, ran the company’s nuclear safety division, said the organization should be strengthened.
See also: NHK: Water level "far lower than previously thought" at Reactor No. 2 -- Just two feet deep -- Anticipated it was 5 times higher -- Decommissioning reactor could be "much more difficult" (PHOTO)
Published: May 22nd, 2012 at 9:44 am ET
- *NEW Dec. 1 Yomiuri* Gov’t Study: Reactor pressure vessel may be “tilted” after corium melted through concrete floor up to 200 cm deep November 30, 2011
- Report: Reactor No. 2 has multiple 4-inch holes in CONTAINMENT VESSEL May 24, 2011
- Hardly any water in Reactor No. 1 after flooding effort — “Containment vessel is likely to be broken and leaking” May 12, 2011
- Japan researchers believe Reactor No. 1 filled with steam — Gas leaking from upper part May 23, 2012
- TEPCO: Bigger breach in No. 1 reactor core than expected — “Serious setback” to stabilize Fukushima May 12, 2011