AOP-501 (2) Loss of Main Control Room Air Conditioning

Entry Conditions

Particulate and Iodine Alarms (High-2)

Radiation (Gaseous) Alarm

(Steps 1-3)

Notice: “Go To” therefore Main Body of A-501 is NOT continued concurrently until Attachment 1 is completed

Fire in Progress

Smoke Dampers

Main Control Room Supply/Return Isolation MOVs

(Steps 4-6)

Nuclear Island Switchgears

MCR/CSA AHUs

(Steps 7 & 8)

VBS Normal MCR Cooling Flow Requirement

(Step 13)

VBS Failure

(Step 9)

Main Control Room Temperature

(Step 10)

Attachment 1 Alternate MCR Cooling

VES Actuation

Fuel Movement

Heat Input Restrictions

(Att. 1 Steps 1-4)

Stage 1 Load Shed

(Att. 1 Step 5)

Stage 1 Load Shed List

(Attachment 2)

Notice:

Plant Status Display 1 & 2 are “WPIS” 15 & 16

Not pictured:

Main Control Area Conference Table breakers

VES MCR Supply SOV Failures (VES-V005A/B)

(Att. 1 Step 10)

LCO 3.7.6 Main Control Room Emergency Habitability System (VES)

Temperature

Capacity

(Att. 1 Steps 13 & 14)

Note:

Spaces adjacent to MCR are required to be <85°F to satisfy 3.7.6

VES Flow Requirement

(Att. 1 Step 15)

Stage 2 Load Shed

(Att. 1 Step 17)

Stage 2 Load Shed List

(Attachment 3)

Notice:

“Reactor Operator Consoles” are the LAN computers, NOT the IDS-Powered Control Stations used to manipulate PLS

MCR Ancillary Fans

(Att. 1 Step 19)

Criteria to Stop VES

(Att. 1 Step 21)