MRMTC Tabletop Workshop Reference Documents

Initial Site-Specific De-Inventory Report for Big Rock Point Report No.: RPT-3014537-002

Transfer Canister to Transportation Cask: Operations will engage the grapple on the hydraulic ram and connect it to the pintle on the canister. Using the hydraulic ram, operations will push the canister into the transportation cask until it is fully inserted (see Figure 6-4 for hydraulic ram details and Step 3 of Figure 6-5 for the horizontal transfer activity). The canister is fully inserted when a measuring device on the hydraulic ram confirms that the prescribed distance has been traveled after the canister starts entering into the transportation cask. At this point, operations will disengage the grapple from the pintle and retract the ram from the casks. The radiation levels near the mid-plane (mid-point) of the transportation cask will be checked to verify dose rates are below maximum expected values in accordance with site-specific procedures and As Low As Reasonably Achievable (ALARA) requirements. If the radiation levels exceed these requirements, operations will stop and notify management and await further instructions before proceeding. If radiation levels are acceptable, operations will proceed. Once the radiation levels are verified, operations will remove the docking collar cask restraints from the transportation cask. Then using the skid positioning system, the transportation cask will be moved from the docking collar and position to install the cask lid. Operations will uninstall the pintle from the canister, which will then allow for the installation of the transportation cask lid using the horizontal lid handling fixture and a portable crane. The bolts will be installed and snugged following a star pattern and the tamper-indicating device will be attached to the cask lid. Additional surveys (radiation and contamination) will be performed on the transportation and storage casks. The transportation cask lid bolts will then be torqued as required by the cask SAR. The cask will be moved using the mobile crane to a location for leak testing. Operations will remove the docking collar from the storage cask and replace the storage cask lid onto the storage cask using the horizontal lid handling fixture and a mobile crane and bolt the lid as required. The hydraulic ram will be removed from the storage cask and surveyed and moved if needed to a storage location. The temporary outlet vent shielding will be removed and the vent screens reinstalled, if removed. The storage cask will then be upended to the vertical orientation. Operations will disconnect the storage cask from the upender/downender and using the air pad system and heavy forklift, move the empty storage cask to a location at BRP for storage. Preparation of Transportation Cask for Shipment: Using the intermodal skid horizontal lift fixture, attach lifting cables to the four bolt-on lift eyes of the intermodal skid. Disconnect the skid positioning system attachment devices from the skid positioning system and transfer the transportation cask to the leak test area. Disconnect the rigging/lift fixture from the transportation cask and remove the lower trunnions from the transportation cask. Install and perform leak testing of the cask as directed in site procedures and the transportation cask SAR. Steps 5 through 7 in Figure 6-5 provide an overview of some of these operations. Once the leak testing is completed each cask impact limiter will be installed. Once an impact limiters are in placed on the cask, operations will install the impact limiter attachment studs, the washers, and the nuts and then torque the nuts to the level required by the transportation cask SAR. Operations will then re-install the personnel barrier onto the intermodal skid and secure it. Using the intermodal skid horizontal lift fixture, attach lifting cables to the four bolt-on lift eyes of the intermodal skid and transfer the system to the heavy haul trailer. Once the system is

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Initial Site-Specific De-Inventory Report for Big Rock Point May 10, 2017

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