AB.FUEL-0002 — Loss of Refueling Cavity or SFP Level
Purpose
Provides operator guidance for responding to a loss of water level in the refueling cavity or the spent fuel pool.
Key Actions / Information
Exam — 2018 Q34
The Fuel Transfer Tube Gate Valve can ONLY be fully closed when the fuel transfer cart is inside containment. The fuel transfer cart has two interlocks for cart movement: the upender must be in the horizontal position AND the Fuel Transfer Tube Gate Valve must indicate open (via the open limit switch). With a failed limit switch (no open indication), the cart can only be moved MANUALLY (not electrically). If the cart is in the Fuel Handling Building and refueling canal level is lowering, the crew cannot fully close the gate valve until the cart is moved inside containment.
Connections
- Related systems: Refueling
- Related exam questions: 2018 Q34
- Related exam: 2018 NRC Written Exam