Press Release (Apr 16,2012)
General Plan and Start of Main Work of the Cover for Fuel Removal of Unit 4 in Fukushima Daiichi Nuclear Power Station
Based on "Mid-to-Long-Term Roadmap towards the Decommissioning of Fukushima Daiichi Nuclear Power Station Unit 1-4" which was announced on Dec. 21, 2011, we started the preparation work for the installation of the cover for fuel removal of Unit 4 on Mar. 23, 2012.
We would like to inform that we will start the main work for the installation of the cover for fuel removal on Apr. 17.
As the first step of the main work, we will conduct the foundation improvement work in order to strengthen the foundation which supports the foundation of the frame for supporting the crane which is a part of the cover for fuel removal.
At the same time, we will conduct the countermeasure to prevent rainwater from penetrating into Unit 4 Reactor Building.
Attachment: General plan of the cover for fuel removal of Unit 4 in Fukushima Daiichi Nuclear Power Station (PDF 121KB)
Image of the cover for fuel removal of Unit 4 in Fukushima Daiichi Nuclear Power Station (This picture shows only a image of the general plan, therefore it can differ from the actual structure.)
From the TEPCO attachment:
Structure: The size of the cover for fuel removal is approximately 69m (South-North) x approximately 31m (East-West) x approximately 53m (height). Mainly it is a steel construction, the sidewall and roof are planned to be covered by the jacket
materials which block wind and rain. There are the slopes on the roof and the top
of the sidewall which prevents rainwater from penetrating.