AOP-115 (1) Loss of Normal Residual Heat Removal

Entry Conditions

Indications and Actions of Cavitating RNS Pump(s)

(Step 3 and RNO)

RNS Intact

(Step 6)

Minimum Flow Requirements

(Step 8)

CCS Requirements to start RNS Pump

(Step 14)

RNS Flow Requirements: Pump/Hx Bypass

(Step 16)

RCP and Inventory Control

(Steps 21 & 22)

Establish Heat Sink

Steam Generator(s)/PRHR

(Step 27-30)

When to align SFS to IRWST

(Step 32)

This deep into the procedure, SFS is aligned to IRWST since only remaining heat sink is PRHR. RNS has failed and a Secondary Heat Sink is not available, Containment has been evacuated.

Containment Air Cooling

(Step 33 & 34)

Sequence of Restoring Chilled Water to Containment Recirc Fans

(Step 35)

Simply Countdown the CIV Sequence, and Supply AOV to specific fan(s) is always last

AOP-115

FOP RNS Isolation Criteria

AOP-115

FOP Safeguards Actuation Criteria

Pressurizer Heater Requirements

(Refresher)

20% Trip, 25% Reset (PLS)

66% Trip (MCC Breakers) P-19

CMT (MCC Breakers)