Q94 — Defueling Core Alteration SRO Supervision
G2.1.35 (3.9)
In accordance with S2.OP-IO.ZZ-0007, Cold Shutdown to Refueling, which ONE of the following defueling activities is the FIRST evolution performed requiring the direct supervision of the Refueling SRO in Containment because it is a CORE ALTERATION?
A. Unlatching RCCAs
B. Lifting the upper internals
C. Moving the first fuel assembly
D. Disconnecting CRDMs
▶ Show Answer & Explanation
✓ A. Correct. IAW S1(2).OP-IO.ZZ-0007, CORE ALTERATION shall be the movement of any fuel, sources, OR reactivity control components, within the reactor vessel with the vessel head removed and fuel in the vessel. Suspension of CORE ALTERATION shall NOT preclude completion of movement of a component to a safe conservative location. Unlatching RCCAs and moving fuel assemblies are Core Alterations requiring a refueling SRO present. Unlatching RCCAs is performed prior to the first fuel move.
✗ B. Incorrect. Moving upper internals is not a Core Alteration. Plausible because this is an evolution performed as part of reactor disassembly.
✗ C. Incorrect. Moving fuel assembly is a Core Alteration, but it is not the first Core Alteration. Plausible because this is an evolution performed as part of reactor disassembly.
✗ D. Incorrect. Disconnecting CRDMs is not a Core Alteration. Plausible because this is an evolution performed as part of reactor disassembly and does involve reactivity components, but does not involve the movement of reactivity control components inside the reactor vessel.
Ref: S2.OP-IO.ZZ-0007 (R21) | LO: NOS05IOP007, Obj 4 — State/Identify the following parameters IAW S2.OP-IO.ZZ-0007(Q), Cold Shutdown to Refueling, and Technical Specifications: Define Core Alterations | Source: Bank - Salem | Cognitive: Fundamental/Memory
Connections
- Related systems: Refueling, Control Rod Drive
- Related procedures: S2.OP-IO.ZZ-0007 — Cold Shutdown to Refueling
- Related tech specs: TS 3/4.9 — Refueling Operations
- Related exam: 2022 NRC Written Exam