ML19162A409

01_03_Exercise_C Task 2 Steps 4 and 6

ML19162A409
Person / Time
Issue date:	06/13/2019
From:	Office of Nuclear Regulatory Research
To:
T. Rivera
Shared Package
ML19162A398	List: ML19162A399 ML19162A400 ML19162A401 ML19162A402 ML19162A403 ML19162A404 ML19162A405 ML19162A407 ML19162A408 ML19162A409 ML19162A410
References
Download: ML19162A409 (2)

Text

Step 4: Identify Equipment with Potential Spurious Actuations that May Challenge the Mitigating Capability to be Credited Considered Description PRA System or Function Comments/Disposition spurious equipment Possibly Affected operations MOV-13 PORV block valve MOV-16 AFW-A test line isolation valve MOV-17 AFW-B test line isolation valve MOV-19 AFW-C test line isolation valve MOV-3 Containment sump recirc. valve MOV-4 Containment sump recirc. valve AOV-1 PORV AOV-2 Letdown isolation valve AOV-3 Charging pump injection valve AOV-4 Atmospheric dump valve RHR-B RHR-B pump

Step 5: Identify Additional Mitigating, Instrumentation, and Diagnostic Equipment Important to Human Response Instrumentation Description Potentially Affected Human Comments/Disposition required to perform Failure Event in PRA model human actions LI-1 RWST level LI-2 RWST level LI-3 Containment sump level LI-4 Containment sump level LI-5 SG secondary level LI-6 SG secondary level TI-1 Letdown heat exchanger outlet temp PT-1 RCS pressure A-1 AFW-A motor high temp Step 6: Include Potentially High Consequence Related Equipment Equipment or combinations of Description of high consequence Comments/Disposition equipment that can cause high event consequence event