ML23159A070
| ML23159A070 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 06/08/2023 |
| From: | NRC/RGN-II |
| To: | |
| References | |
| 50-424/23-301, 50-425/23-301 50-424/OL-23, 50-425/OL-23 | |
| Download: ML23159A070 (1) | |
Text
During administration applicants were told this was Current Conditions
Correct answer choice is A, post exam comment resolution
A is correct, post exam comment resolution
Circulating Water System 13724-1 VOGTLE Version 42.0 Unit 1 Page 73 of 77 FIGURE 1 Page 1 of 1 COLD WEATHER OPERATION AS IS CENTRAL SHUT-OFF VALVES OPEN NORMAL OPERATION BYPASS OPERATION CENTRAL SHUT-OFF VALVES CLOSED 32
-30 0
10 20 50 40 30 90 80 70 60 55 50 40 COLD WEATHER OPERATION OF THE CIRCULATING WATER COOLING TOWER Circulating Water System Temperature Outside Air Temperature NOTE Following a unit trip, with outside air temperature less than or equal to 32F., rapid ice formation may occur in the Cooling Tower fill. As soon as plant conditions allow, proceed to BYPASS OPERATION by performing Section 4.4.7 Step 2.
CONDENSATE AND F/W MALFUNCTION 18016-1 VOGTLE Version 3.1 Unit 1 Page 35 of 37 Printed 10/24/2022 at 14:18:00 TABLE 1 Page 1 of 1 TURBINE LOAD RESTRICTIONS BASED ON STEAM FLOW THROUGH THE TURBINE NOTES A heater is considered out of service when its extraction steam valve is fully shut or feedwater flow through the heater is isolated.
If exact combination is not listed in Table, choose the option that envelops the current plant conditions.
HEATERS OUT
% TURBINE LOAD 1 String out 2 Strings Out 3 Strings Out 1, 2 and 3 95 65 35 4 or 5 100 35 N/A 4 and 5 100 35 N/A 6
100 50 N/A 4, 5 and 6 90 35 N/A 1, 2, 3, 4 and 5 90 35 N/A 1, 2, 3, 4, 5 and 6 90 35 N/A END OF TABLE 1
ECA 1.1 LOSS OF EMERGENCY COOLANT RECIRCULATION 19111-1 VOGTLE Version 1 Unit 1 Page 9 of 41 SUBSEQUENT OPERATOR ACTIONS (continued)
ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED Printed 10/24/2022 at 13:58:00
- b. Determine number of CS Pumps required from Table:
RWST LEVEL CONTAINMENT PRESSURE FAN COOLERS IN SLOW SPRAY PUMPS REQUIRED GREATER THAN 29%
GREATER THAN 52 PSIG N/A 2
BETWEEN 21.5 PSIG and 52 PSIG 0
2 4
1 8
0 LESS THAN 21.5 PSIG N/A 0
BETWEEN 8% and 29%
GREATER THAN 52 PSIG N/A 2
BETWEEN 21.5 PSIG and 52 PSIG 3
1 6
0 LESS THAN 21.5 PSIG N/A 0
LESS THAN 8%
N/A N/A 0
- c. Check CS Pumps running - EQUAL TO NUMBER REQUIRED.
- c. Reset Containment Spray.
Operate CS Pumps and discharge valves as required.
- 9. Check if Containment Spray should be aligned for recirculation:
- 9.
- a. CS Pumps - RUNNING.
- a. Go to Step 10.
- b. Containment Emergency Sump levels
- GREATER THAN OR EQUAL TO 12 INCHES:
1-LI-764
-OR-1-LI-765
- b. WHEN Containment Emergency Sump level indicators 1-LI-764 or 1-LI-765 greater than or equal to 12 INCHES, THEN perform Step 9.c.
Continue with Step 10.
- c. Initiate ATTACHMENT - 3, Containment Spray Switchover from Injection to Recirculation.
FR - P. 1 RESPONSE IMMINENT PRESSURIZED THERMAL SHOCK CONDITION 19241-1 VOGTLE Version 1.4 Unit 1 Page 30 of 31 Printed 02/05/2020 at 15:17:00 FIGURE 3 Page 1 of 1 COLD OVERPRESSURE LIMIT