ML25296A230
| ML25296A230 | |
| Person / Time | |
|---|---|
| Site: | South Texas, 07201041  |
| Issue date: | 10/23/2025 |
| From: | Hill M South Texas |
| To: | Office of Nuclear Material Safety and Safeguards, Office of Nuclear Reactor Regulation, Document Control Desk |
| References | |
| NOC-AE-25004133, STI: 35802701 | |
| Download: ML25296A230 (1) | |
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Nuclear OperaHng Company ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 South Texas Project October 23, 2025 NOC-AE-25004133 10 CFR 50.4(b)(5) 10 CFR 50.54{q)(5) 10 CFR 72.4 10 CFR 72.44(f)
STI: 35802701 Units 1 and 2; Independent Spent Fuel Storage Installation (ISFSI)
Docket Nos. STN 50-498; STN 50-499; 72-1041 Changes to South Texas Project Electric Generating Station (STPEGS) Emergency Plan In accordance with 10 CFR 50.4(b)(5), 10 CFR 50.54(q)(5), 10 CFR 72.4, and 10 CFR 72.44(f),
STP Nuclear Operating Company (STPNOC) hereby submits the attached changes to the STPEGS Emergency Plan effective on September 25, 2025.
STPNOC has evaluated these changes in accordance with 10 CFR 50.54(q) and determined that it continues to meet the standards of 10 CFR 50.47(b) and the requirements of 10 CFR 50, Appendix E. A summary of analysis and description of changes are attached.
There are no commitments in this letter.
If there are any questions regarding this matter, please contact Stephanie Rodgers at 361-972-4527 or me at 361-972-4283.
Marc P. Hill Manager, Emergency Preparedness
Attachment:
Summary of Analysis and Description of Changes to the STPEGS Emergency Plan cc:
Director, Division of Fuel Management Office of Nuclear Material Safety and Safeguards U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission 1600 E. Lamar Boulevard Arlington, TX 76011-4511
NOC-AE-25004133 Attachment Attachment Summary of Analysis and Description of Changes to the STPEGS Emergency Plan
NOC-AE-25004133 Page 1 of 3 Summary of Analysis Change Summary:
The new revision results in a change of On-shift ERO position tasks, specifically, the Shift Manager as Emergency Director will perform all actions to notify / activate the ERO through the existing EONS offsite emergency notification process. The role of the ENS Communicator currently assigned for this notification will be eliminated.
Change Justification:
EONS simplifies ERO performance of the actions necessary to complete, transmit, and verify receipt of the event notification form. The state and county notification process task difficulty is reduced with EONS.
EONS replaces several aged processes/systems (paper forms, analog phone lines and fax machines) with a software and email system which meet all capability requirements with a single tested and demonstrated technologically-current system. EONS provides greater scalability, reliability, and redundancy with the notification message and the number of messages through multiple, simultaneous electronic means of transmission compared to the current ring-down phone system.
The replacement of the current ring-down phone system with EONS continues to provide the capability to; (1) alert state and local governmental agencies within 15 minutes after declaration of an emergency and provide follow-up notifications, and (2) establish prompt communication among principal emergency response organizations.
Changes to the testing and maintenance requirements continue to ensure that functions are performed or met.
Adoption of EONS for ERO notification provides improved timeliness of this function due to the simplification and streamlining of the process.
The change in ERO notification from Vesta (ENRS) to Everbridge (EONS) continues to meet and exceed the requirements for this Planning Standard. Everbridge allows for additional means to notify the ERO if the primary means in lost. By integrating ERO notification in EONS, it streamlines and improves the process and time it takes for notifying the ERO by removing several steps from the current process.
NOC-AE-25004133 Page 2 of 3 Description of Changes Item /
(Ref CR) Current Proposed Type / Justification 1
24-8974 Page 15 B.1.a.1.D, responsibilities:
State & County and ENS Communicators:
ERO notification DELETE ERO notification CHANGE:
Responsibility for ERO notification is REMOVED from the ENS communicator. The task is incorporated into the Shift Managers tasks for use of the EONS software.
2 24-8974 Page 36 D.3.1, Unusual Event Classification (UE):
the State, County, and NRC, and activation of the Emergency Notification and Response System (ENRS)
D.3.1, Unusual Event Classification (UE):
of the State, County, NRC, and activation of the ERO notification system CHANGE:
The ENRS system has been incorporated into the existing EONS software. The Emergency Notification and Response System (ENRS) designation has been replaced with ERO notification system without an abbreviation as it is part of the EONS software.
3 24-8974 Page 44 F.1.c, 4th paragraph:
The Emergency Notification &
Response System (ENRS)
F.1.c, 4th paragraph:
The ERO notification system CHANGE:
The ENRS system has been incorporated into the existing EONS software. The Emergency Notification and Response System (ENRS) designation has been replaced with ERO notification system without an abbreviation as it is part of the EONS software.
4 25-5651 Page 54 H.7.1, Second Paragraph:
ICS workstations H.7.1, Second Paragraph:
ERFDADS/ICS data display devices CHANGE:
(EDS) is the current configuration used in the TSCs and EOF for displaying plant data found on ERFDADS/ICS systems. Change allows for the use of varying qualified devices / systems for assessment and monitoring purposes.
5 25-5651 Page 54 H.7.2 Data from the primary tower is relayed to the ICS workstations.
H.7.2, Data from the primary tower is relayed to ICS which is then available to the ERO.
CHANGE:
(EDS) is the current configuration used in the TSCs and EOF for displaying plant data found on ERFDADS/ICS systems. Change allows for the use of varying qualified devices / systems for assessment and monitoring purposes.
6 25-5651 Page 56 H.10. Third Paragraph ICS workstations H.10. Third Paragraph ERFDADS/ICS data display devices CHANGE:
(EDS) is the current configuration used in the TSCs and EOF for displaying plant data found on ERFDADS/ICS systems. Change allows for the use of varying qualified devices / systems for assessment and monitoring purposes.
NOC-AE-25004133 Page 3 of 3 7
25-5651 Page 56 H.10. Fifth Paragraph ICS workstations H.10. Fifth Paragraph ERFDADS/ICS data display devices CHANGE:
(EDS) is the current configuration used in the TSCs and EOF for displaying plant data found on ERFDADS/ICS systems. Change allows for the use of varying qualified devices / systems for assessment and monitoring purposes.
8 25-1905 Page 94 P.2, The Chief Administrative Officer has the overall authority and responsibility for the STPEGS Emergency Plan.
P.2, The Site Vice President has the overall authority and responsibility for the STPEGS Emergency Plan.
CHANGE:
STPNOC eliminated the position of Chief Administrative Officer. Roles and responsibilities for implementation of all EPlan requirements has been assumed by the STPNOC Chief Nuclear Officer, a position of higher responsibility in the corporate structure.
9 24-8974 Page 96 P.10, 1st paragraph:
The ENRS contains comprehensive P.10, 1st paragraph:
The ERO notification system contains comprehensive CHANGE:
The ENRS system has been incorporated into the existing EONS software. The Emergency Notification and Response System (ENRS) designation has been replaced with ERO notification system without an abbreviation as it is part of the EONS software.