L-22-159, Supplement to a License Amendment Request Revising Technical Specification 3.3.5, Loss of Power (LOP) Diesel Generator (DG) Start and Bus Separation Instrumentation
| ML22214B739 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 08/02/2022 |
| From: | Enos M Energy Harbor Nuclear Corp |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| EPID L-2021-LLA-0156, L-22-159 | |
| Download: ML22214B739 (5) | |
Text
Energy Harbor Nuclear Corp.
Beaver Valley Power Station P.O. Box 4 Shippingport, PA 15077 Matt J. Enos 724-682-7773 General Plant Manager, Beaver Valley Nuclear August 2, 2022 10 CFR 50.90 L-22-159 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001
Subject:
Beaver Valley Power Station, Unit Nos. 1 and 2 Docket No. 50-334, License No. DPR-66 Docket No. 50-412, License No. NPF-73 Supplement to a License Amendment Request Revising Technical Specification 3.3.5, Loss of Power (LOP) Diesel Generator (DG) Start and Bus Separation Instrumentation (EPID No. L-2021-LLA-0156)
By letter dated August 29, 2021 (Accession No. ML21242A125), Energy Harbor Nuclear Corp. requested Nuclear Regulatory Commission (NRC) approval of a license amendment request. The proposed change would add notes to Technical Specification 3.3.5 required actions C.1 and D.1, and revise Table 3.3.5-1, Loss of Power Diesel Generator Start and Bus Separation Instrumentation. A response to the NRC staffs request for additional information was submitted on April 4, 2022 (Accession No. ML22094A115).
The proposed changes to Technical Specification Table 3.3.5-1 could present a potential configuration control issue during the implementation period. Therefore, the Technical Specification page 3.3.5-3 markups in the August 29, 2021 submittal are hereby replaced with the two attached pages 3.3.5-3 and 3.3.5-3a. The only differences from the proposed Table 3.3.5-1 changes in the August 29, 2021 submittal are:
The current Technical Specification Table 3.3.5-1 would remain. However, the page header is hereby modified to state that this table is effective before the degraded voltage relay reduced time delay modifications are completed.
The modified Tables 3.3.5-1 in the August 29, 2021 submittal are hereby changed to new page 3.3.5-3a, and the page header states that the table is effective after the degraded voltage relay reduced time delay modifications are completed.
Beaver Valley Power Station, Unit Nos. 1 and 2 L-22-159 Page 2 The proposed note insertions for Technical Specification 3.3.5, conditions C and D are unaffected.
NRC staff approval of the proposed amendments is requested by August 31, 2022, and the amendments shall be implemented within 60 days of approval. As stated in the April 4, 2022 submittal, the plant modifications are in-progress and the timeline for Unit No. 2 to complete implementation is by the fall of 2024 refueling outage. The Unit No. 1 timeline for completion is by the spring of 2027 refueling outage.
The information provided by this submittal does not invalidate the significant hazards consideration analysis provided in the August 29, 2021 submittal.
There are no regulatory commitments contained in this submittal. If there are any questions or if additional information is required, please contact Mr. Phil H. Lashley, Manager, Fleet Licensing, at (330) 696-7208.
I declare under penalty of perjury that the foregoing is true and correct. Executed on August 2, 2022.
Attachment:
Proposed Technical Specification Changes cc:
NRC Region I Administrator NRC Resident Inspector NRC Project Manager Director BRP/DEP Site BRP/DEP Representative
Attachment L-22-159 Proposed Technical Specification Changes (2 pages follow)
LOP DG Start and Bus Separation Instrumentation Before Degraded Voltage Relay Reduced Time Delay Modifications 3.3.5 Table 3.3.5-1 (page 1 of 1)
Loss of Power Diesel Generator Start and Bus Separation Instrumentation FUNCTION REQUIRED CHANNELS PER BUS CONDITIONS UNIT 1 ALLOWABLE VALUE UNIT 2 ALLOWABLE VALUE Loss of Voltage
- 1. 4160 V Emergency Bus DG start 1
D, E 2962 V with a time delay of
< 0.9 seconds 2962 V with a time delay of 0.33 0.03 seconds
- 2. 4160 V Emergency Bus Bus Separation 1 (Unit 1) 2 (Unit 2)
D,E (Unit 1)
B,C,E (Unit 2) 2962 V with a time delay of 1.0 0.1 seconds 2962 V with a time delay of 1.0 0.1 seconds Degraded Voltage
- 3. 4160 V Emergency Bus Bus Separation 2
B,C,E 3885.4 V with a time delay of 90 5.0 seconds 3873 V with a time delay of 90 5.0 seconds
- 4. 480 V Emergency Bus Bus Separation 2
B,C,E 448.3 V with a time delay of 90 5.0 seconds 446.9 V with a time delay of 90 5.0 seconds Beaver Valley Units 1 and 2 3.3.5 - 3 Amendments /
LOP DG Start and Bus Separation Instrumentation After Degraded Voltage Relay Reduced Time Delay Modifications 3.3.5 Table 3.3.5-1 (page 1 of 1)
Loss of Power Diesel Generator Start and Bus Separation Instrumentation FUNCTION REQUIRED CHANNELS PER BUS CONDITIONS UNIT 1 ALLOWABLE VALUE UNIT 2 ALLOWABLE VALUE Loss of Voltage
- 1. 4160 V Emergency Bus DG start 1
D, E 3224 V with a time delay of
< 0.9 seconds 3328 V with a time delay of 0.33 0.03 seconds
- 2. 4160 V Emergency Bus Bus Separation 1 (Unit 1) 2 (Unit 2)
D,E (Unit 1)
B,C,E (Unit 2) 3224 V with a time delay of 1.0 0.1 seconds 3328 V with a time delay of 1.0 0.1 seconds Degraded Voltage (without safety injection signal)
- 3. 4160 V Emergency Bus Bus Separation 2
B,C,E 3885.4 V with a time delay of 90 5.0 seconds 3873 V with a time delay of 90 5.0 seconds
- 4. 480 V Emergency Bus Bus Separation 2
B,C,E 448.3 V with a time delay of 90 5.0 seconds 446.9 V with a time delay of 90 5.0 seconds Degraded Voltage (with safety injection signal)
- 5. 4160 V Emergency Bus Bus Separation 2
B,C,E 3885.4 V with a time delay of 4.00 0.18 seconds 3873 V with a time delay of 4.00 0.18 seconds
- 6. 480 V Emergency Bus Bus Separation 2
B,C,E 448.3 V with a time delay of 4.00 0.18 seconds 446.9 V with a time delay of 4.00 0.18 seconds Beaver Valley Units 1 and 2 3.3.5 - 3a Amendments /