ML21361A255
| ML21361A255 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 10/28/2021 |
| From: | Gregory Roach NRC/RGN-III/DRS/OLB |
| To: | Exelon Generation Co |
| Roach G | |
| Shared Package | |
| ML21055A846 | List: |
| References | |
| Download: ML21361A255 (6) | |
Text
ES-301 Control Room/In-Plant Systems Outline Form ES-301-2
Facility: Byron Nuclear Station Date of Examination: 9/27/21 Exam Level: RO SRO-I SRO-U Operating Test Number: 2021-301
Control Room Systems:* 8 for RO, 7 for SRO-I, and 2 or 3 for SRO-U
System/JPM Title Type Code* Safety Function
- a. Perform a 50 Gallon Boration of the RCS (MODE 1), ( Boration S, A, M 1 fails to stop) 004A4.12 Ability to manually operate and/or monitor in the control room: Boration /dilution batch control
Modified from JPM Bank 3.8/3.3 2012 NRC Exam (Modified)
- b. Raise Accumulator Level with the A SI pp S, A, D, EN 2 006A1.13Ability to predict and/or monitor changes in parameters (to prevent exceeding design limits) associated with operating the ECCS controls including: Accumulator pressure (level, boron concentration)
JPM Bank 3.5/3.7
- c. Align ECCS to Cold Leg (1Component Cooling Pump Available) S, A, L, D, EN 3 011EA1.11 Ability to operate and monitor the following as they apply to a Large Break LOCA: Long-term cooling of core JPM Bank 4.2/4.2
- d. Restore FW per Attachment C of 1BEP ES-0.1 S, D, L 4S 059A4.11 Ability to manually operate and monitor in the control room: Recovery from automatic feedwater isolation JPM Bank 3.1/3.2
- e. SX Flooding Requiring RCFC Isolation (Running Train Leak) S, D, A 5 022A2.05 Ability to (a) predict the impacts of the following malfunctions or operations on the CCS; and (b) based on the predictions, use procedures to correct, control, or mitigate the consequences of those malfunctions or operations: Major leak in CCS JPM Bank 3.1/3.5
- f. Synchronize a D/G to a Bus and Load to 1000 KW S, D, EN 6 064A4.06 Ability to manually operate and/or monitor in the control room: Manual start, loading, and stopping of the ED/G JPM Bank 3.9/3.9 2012 NRC Exam ES-301 Control Room/In-Plant Systems Outline Form ES-301-2
- g. Respond to RCP Thermal Barrier Leak with CC Valve Failure S, A, D 4P 003A4.08, Ability to manually operate and/or monitor in the control room: RCP cooling water supplies JPM Bank 3.2/2.9
- h. Perform RMS Functional Test in Preparation for Waste Gas S, D 9 Release 071A4.25 Ability to manually operate and/or monitor in the control room: Setting of process radiation monitor alarms, automatic functions, and adjustment of setpoints JPM Bank 3.2/3.2
In-Plant Systems:* 3 for RO, 3 for SRO-I, and 3 or 2 for SRO-U
- i. Locally close 2AF005 valves B Train N, R, E 4S 2.1.30 Ability to locate and operate components, including local controls.
New 4.4/4.0
- j. Bus Duct Response N, E 6 062A2.01 Ability to (a) predict the impacts of the following malfunctions or operations on the ac distribution system; and (b) based on those predictions use procedures to correct, control, or mitigate the consequences of those malfunctions or operations:
Types of loads that, if de-energized, would degrade or hinder plant operation New 3.4/3.9
- k. Operate the Fire Detection/Alarm Equipment (without control A, D 8 power) 086A2.04 Ability to (a) predict the impacts of the following malfunctions or operations on the Fire Protection System; and (b) based on those predictions, use procedures to correct, control, or mitigate the consequences of those malfunctions or operations:
Failure to actuate the FPS when required, resulting in fire damage.
JPM Bank 3.3/3.9
- All RO and SRO-I control room (and in-plant) systems must be different and serve different safety functions, all five SRO-U systems must serve different safety functions, and in-plant systems and functions may overlap those tested in the control room.
ES-301 Control Room/In-Plant Systems Outline Form ES-301-2
- Type Codes Criteria for RO /SRO-I/SRO-U
(A)lternate path 4-6/4-6 /2-3 (6)
(C)ontrol room (D)irect from bank 9/ 8/ 4 (8)
(E)mergency or abnormal in-plant 1/ 1/ 1 (2)
(EN)gineered safety feature 1/ 1/ 1 (control room system) (3)
(L)ow-Power/Shutdown 1/ 1/ 1 (2)
(N)ew or (M)odified from bank including 1(A) 2/ 2/ 1 (3, 1A)
(P)revious 2 exams 3/ 3/ 2 (randomly selected) (0)
(R)CA 1/ 1/ 1 (1)
(S)imulator (8)
Facility: Byron Nuclear Station Date of Examination: 9/27/21 Exam Level: RO SRO-I SRO-U Operating Test Number: 2021-301
Control Room Systems:* 8 for RO, 7 for SRO-I, and 2 or 3 for SRO-U
System/JPM Title Type Code* Safety Function
- a. Perform a 50 Gallon Boration of the RCS (MODE 1), ( Boration S, A, M 1 fails to stop) 004A4.12 Ability to manually operate and/or monitor in the control room: Boration /dilution
Modified from JPM Bank 3.8/3.3 2012 NRC Exam (Modified)
- b. Raise Accumulator Level with the A SI pp S, A, D, EN 2 006A1.13Ability to predict and/or monitor changes in parameters (to prevent exceeding design limits) associated with operating the ECCS controls including: Accumulator pressure (level, boron concentration)
JPM Bank 3.5/3.7
- c. Align ECCS to Cold Leg (1Component Cooling Pump Available) S, A, L, D, EN 3 011EA1.11 Ability to operate and monitor the following as they apply to a Large Break LOCA: Long-term cooling of core JPM Bank 4.2/4.2
- d. Restore FW per Attachment C of 1BEP ES-0.1 S, D, L 4S 059A4.11 Ability to manually operate and monitor in the control room: Recovery from automatic feedwater isolation JPM Bank 3.1/3.2 ES-301 Control Room/In-Plant Systems Outline Form ES-301-2
- e. SX Flooding Requiring RCFC Isolation (Running Train Leak) S, D, A 5 022A2.05 Ability to (a) predict the impacts of the following malfunctions or operations on the CCS; and (b) based on the predictions, use procedures to correct, control, or mitigate the consequences of those malfunctions or operations: Major leak in CCS JPM Bank 3.1/3.5
- f. Synchronize a D/G to a Bus and Load to 1000 KW S, D, EN 6 064A4.06 Ability to manually operate and/or monitor in the control room: Manual start, loading, and stopping of the ED/G JPM Bank 3.9/3.9 2012 NRC Exam
- g. Respond to RCP Thermal Barrier Leak with CC Valve Failure S, A, D 4P 003A4.08, Ability to manually operate and/or monitor in the control room: RCP cooling water supplies JPM Bank 3.2/2.9
h.
In-Plant Systems:* 3 for RO, 3 for SRO-I, and 3 or 2 for SRO-U
- i. Locally close 2AF005 valves B Train N, R, E 4S 2.1.30 Ability to locate and operate components, including local controls.
New 4.4/4.0
- j. Bus Duct Response N, E 6 062A2.01 Ability to (a) predict the impacts of the following malfunctions or operations on the ac distribution system; and (b) based on those predictions use procedures to correct, control, or mitigate the consequences of those malfunctions or operations:
Types of loads that, if de-energized, would degrade or hinder plant operation New 3.4/3.9
- k. Operate the Fire Detection/Alarm Equipment (without control A, D 8 power) 086A2.04 Ability to (a) predict the impacts of the following malfunctions or operations on the Fire Protection System; and (b) based on those predictions, use procedures to correct, control, or mitigate the consequences of those malfunctions or operations:
Failure to actuate the FPS when required, resulting in fire damage.
JPM Bank 3.3/3.9 ES-301 Control Room/In-Plant Systems Outline Form ES-301-2
- All RO and SRO-I control room (and in-plant) systems must be different and serve different safety functions, all five SRO-U systems must serve different safety functions, and in-plant systems and functions may overlap those tested in the control room.
- Type Codes Criteria for RO /SRO-I/SRO-U
(A)lternate path 4-6/4-6 /2-3 (6)
(C)ontrol room (D)irect from bank 9/ 8/ 4 (7)
(E)mergency or abnormal in-plant 1/ 1/ 1 (2)
(EN)gineered safety feature 1/ 1/ 1 (control room system) (3)
(L)ow-Power/Shutdown 1/ 1/ 1 (2)
(N)ew or (M)odified from bank including 1(A) 2/ 2/ 1 (3, 1A)
(P)revious 2 exams 3/ 3/ 2 (randomly selected) (0)
(R)CA 1/ 1/ 1 (1)
(S)imulator (7)
Facility: Byron Nuclear Station Date of Examination: 9/27/21 Exam Level: RO SRO-I SRO-U Operating Test Number: 2021-301
Control Room Systems:* 8 for RO, 7 for SRO-I, and 2 or 3 for SRO-U
System/JPM Title Type Code* Safety Function
- a. Perform a 50 Gallon Boration of the RCS (MODE 1), ( Boration S, A, M 1 fails to stop) 004A4.12 Ability to manually operate and/or monitor in the control room: Boration /dilution 3.8/3.3
Modified from JPM Bank - Modified b.
- c. Align ECCS to Cold Leg (1Component Cooling Pump Available) S, A, L, D, EN 3 011EA1.11 Ability to operate and monitor the following as they apply to a Large Break LOCA: Long-term cooling of core JPM Bank 4.2/4.2
d.
e.
f.
ES-301 Control Room/In-Plant Systems Outline Form ES-301-2
- g. Respond to RCP Thermal Barrier Leak with CC Valve Failure S, A, D, 4P 003A4.08, Ability to manually operate and/or monitor in the control room: RCP cooling water supplies JPM Bank 3.2/2.9
h.
In-Plant Systems:* 3 for RO, 3 for SRO-I, and 3 or 2 for SRO-U
- i. Locally close 2 AF005 valves B Train N, R, E 4S 2.1.30 Ability to locate and operate components, including local controls.
New 4.4/4.0
- j. Bus Duct Response N, E 6 062A2.01 Ability to (a) predict the impacts of the following malfunctions or operations on the ac distribution system; and (b) based on those predictions use procedures to correct, control, or mitigate the consequences of those malfunctions or operations:
Types of loads that, if de-energized, would degrade or hinder plant operation New 3.4/3.9
k.
- All RO and SRO-I control room (and in-plant) systems must be different and serve different safety functions, all five SRO-U systems must serve different safety functions, and in-plant systems and functions may overlap those tested in the control room.
- Type Codes Criteria for RO /SRO-I/SRO-U
(A)lternate path 4-6/4-6 /2-3 (3)
(C)ontrol room (D)irect from bank 9/ 8/ 4 (2 )
(E)mergency or abnormal in-plant 1/ 1/ 1 (2 )
(EN)gineered safety feature 1/ 1/ 1 (control room system) (1)
(L)ow-Power/Shutdown 1/ 1/ 1 ( 1)
(N)ew or (M)odified from bank including 1(A) 2/ 2/ 1 (3, 1A)
(P)revious 2 exams 3/ 3/ 2 (randomly selected) (0)
(R)CA 1/ 1/ 1 (1)
(S)imulator (3)