Posted by

Tiny_logo

743

Viewers

Tags

Published date

April 12, 2017

Consideration of effective removal from Unit 1 Reactor Building Upper Part

About this project

Uploads_2f7bed3fbe989b8c07de54c2fd15aca6ec_2fdec_39

TEPCO is looking for
・ Tech. proposal
about the challenge below.
Please enter your proposal from SUBMIT button.

【Challenge and Current Status】(updated: 2018.07.04)
Rubbles on defueling floor are piled up with sloping up to South. Under the south area rubbles, there are ceiling crane, fuel handling machine and spent fuel pool.
In case of dropping the rubble during rubble removal work, the risk which rubble drops onto spent fuel pool, machinery hatch from opening of defueling floor and the risk which radioactive dust disperse by shock of rubble dropping will be generated.
In oher words, though counter measures to cover opening on refueling floor and Spent Fuel Pool, but in case south side rubble dropped from high point to refueling floor, the dust might be dispersed by dropping shock.
We are searching for the way of minimize risk of rubble dropping or we are searching for shock absorber against rubble dropping which can easily install by remote working with no negative impact to water purity of spent fuel pool.


【Related Information, Background】(updated: 2017.11.29)
Mid-and-Long-Term roadmap
http://www.meti.go.jp/english/earthquake/nuclear/decommissioning/pdf/20170926_01a.pdf

Investigation result of defueling floor after Reactor building cover removal. (Jan. 28, 2016; This page is only available in Japanese.)
http://www.meti.go.jp/earthquake/nuclear/decommissioning/committee/osensuitaisakuteam/2016/pdf/0128_3_2c.pdf

Spraying anti dust dispersal agent and investigation result toward Unit 1 Reactor cover dismantlement. (Dec. 25, 2014; This page is only available in Japanese.)
http://www.meti.go.jp/earthquake/nuclear/pdf/141225/141225_01_3_5_06.pdf


【Schedule】(updated: 2018.07.04)
as soon as possible

When you propose your ideas, TEPCO CUUSOO account is needed.
* Please be aware of the submission deadline.

You can receive information on challenges related to your interest if you register and set your interest information.

Please come and join us!