Example of method 1 "Retrieving fuel debris from the top (fixed transporting equipment)”
Index > Considerations - 3. Seismic safety｜Example of method 1 "Retrieving fuel debris from the top (fixed transporting equipment)”
ⅱ) Considerations - 3. Seismic safety
Issues to be noted for the proposing method in terms of safety are explained below.
- Consideration shall be made for seismic safety and spesific study shall be performed in C/S
Issues requiring special attention 3. Seismic safety
(1) Prior preparation
- Seismic assessment when creating opening on the building for investigation and fuel debris retrieval
(2) Install barrier
- Seismic assessment of barrier equipment
- Seismic assessment of building when installing barrier on the operation floor
(3) Remove shield plug
(4) Remove PCV/RPV upper head
(5) Install equipment and access
- Seismic assessment of equipment for fuel debris retrieval
- Seismic assessment for the building when installing equipment on the operation floor (including shielding equipment)
(6) Dismantle and remove internal structures
- Seismic assessment of equipment for retrieving fuel debris
- Structural stability of internal structures during dismantling of internal structures
(7) Retrieve fuel debris
(8) Collect fuel debris and Transfer canisters
(9) Clean-up equipment
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