Example of method 1 "Retrieving fuel debris from the top (fixed transporting equipment)”
Index > Challenges and Plant information : Overview of methods｜Example of method 1 "Retrieving fuel debris from the top (fixed transporting equipment)”
ⅰ) Challenges and reference information : Overview of methods
Example of operation steps for fixing the transporting equipment and retrieving fuel debris from the top.
Operation steps
(1) Prior preparation ⇒Learn more
- Identify status and location of fuel debris and internal structure
- Identify fuel debris, and measure environmental information such as of dose around the cut object, and detection of hydrogen concentration
(2) Install barrier ⇒Learn more
- Install barrier capable of preventing leakage of radioactive substance resulted from the post-process, like installation of openings
(3) Remove shield plug ⇒Learn more
- Remove shield plug before accessing from the top and installing equipment
(5) Install equipment and access ⇒Learn more
- By using telescopic mechanism of transport equipment installed on a shielding plug , access inside PCV and RPV
(6) Dismantle and remove internal structures ⇒Learn more
- Remove or boring the internal structures, and clean-up those
(7) Retrieve fuel debris ⇒Learn more
- Retrieve fuel debris by using cutting equipment mounted on transport equipment
(8) Collect fuel debris and Transfer canisters ⇒Learn more
- Transfer the canisters to the temporary storage after collecting fuel debris (basically SFP should be used)
・This site provides examples of innovative approach and the technology required based on information submitted for RFI from inside and outside of Japan
・Proposal of more innovative method and technology would be highly appreciated
・Proposal of more innovative method and technology would be highly appreciated