Example of method 2 "Retrieving fuel debris from the top (mobile platform)”
Index > Challenges and Plant information : Overview of methods｜Example of method 2 "Retrieving fuel debris from the top (mobile platform)”
ⅰ) Challenges and reference information : Overview of methods
Example of operation steps for dismantling PCV/RPV and retrieving fuel debris from the top by using mobile platform.
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 with shielding function, and capable of preventing leakage of radioactive substance resulted from the post-process, like installation of openings
(3) Remove shield plug ⇒Learn more
- Remove existing shield plug before accessing from the top and installing equipment
(5) Install equipment and access ⇒Learn more
- Descending transport equipment to access inside PCV/RPV by using the crane installed at operating floor
(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 canister to the temporary storage after Collect 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