Example of method 2 "Retrieving fuel debris from the top (mobile platform)”

ⅰ) Challenges and reference information : (8) Collect fuel debris and transfer canisters

Task(s): Method for preparing temporary storage location and transportation of canisters.

(8) Collect fuel debris and Collect fuel debris and transfer canisters - Major challenges on the actual method

(1)Prior preparation (2)Install barrier (3)Remove shield plug (4)Remove PCV/RPV upper head (5)Install equipment and access (6)Dismantle and remove internal structures (7)Retrieve fuel debris (8)Collect fuel debris and Transfer canister (9)Clean-up equipment

Storage method

  • Models of canister to be referred for temporary storage (Ex. Canister used at TMI-2)
  • Setting of installation places for canisters during storing operation
  • Method for storing the cut fuel debris
Plant information

Determination of temporary storage location

  • Assumption of specification of canister
  • Temporary storage for canisters (basically SFP should be used)
Plant information

Transporting method for canister

  • Layout of canisters setting at temporary storage
  • Method for installing canisters safely
  • Method for transferring canisters to temporary storage
  • Necessity of the barrier for canisters
Plant information
Assumptions and prerequisites
  • Allowable load of operation floor and passageway : 1.2t/㎡
  • Size of equipment which should be transported through passageway : Width 1.2m, Height 3m or less
  • Overhead crane specification (Rated load 100t)