ML26029A186
| ML26029A186 | |
| Person / Time | |
|---|---|
| Site: | River Bend  |
| Issue date: | 01/27/2026 |
| From: | Norris G Entergy Operations |
| To: | James Drake Entergy Operations |
| Drake, J | |
| References | |
| EPID L-2025-LLR-0096 VRR-RBS-2025-01 | |
| Download: ML26029A186 (0) | |
Text
From:
NORRIS, GREGORY P To:
Jason Drake Cc:
Couture III, Philip; Mahan, Cecil; McCoy, Jack
Subject:
[External_Sender] RE: Clarification on River Bend Alternative Request VRR-RBS-2025-01 Date:
Tuesday, January 27, 2026 4:42:48 PM
- Jason,
In June 2019, Condition Report CR-RBS-2019-04409 identified that surveillance STP-000-6606 (Safety and Relief Valve Testing) was testing thermal relief valves like SWP-RV91B more conservatively than the ASME OM Code requirements. Prior to this condition report the IST program was testing thermal relief valves in accordance with Mandatory Appendix I-1350 (Test Frequency, Classes 2 and 3 Pressure Relief Valves). SWP-RV91A, SWP-RV91B, SWP-RV91C, and SWP-RV91D were grouped together and 20% of the group was tested every 48 months as required by Mandatory Appendix I-1350. Furthermore, if there was set-pressure failure in the group, scope expansion was completed in accordance with Mandatory Appendix I-1350(c) (Requirements for Testing Additional Valves). This led to SWP-RV91B being tested more frequently than required.
As part of the CR-RBS-2019-04409 response, surveillance STP-000-6606 was revised to separate the thermal relief valves and change their frequencies such that they would be tested every 10 years in accordance with Mandatory Appendix I-1390.
I hope this explanation addresses the question. Please don't hesitate to reach out if you have further questions or would like to discuss this in more detail.
Greg Norris GregoryP. Norris (Greg)
Sr. Staff Technical Specialist Fleet Regulatory Assurance
Entergy Nuclear Headquarters 1340 Echelon Parkway Jackson, MS 39213 Mail stop: M-ECH-26 Office 601-368-5972 Email: gnorris@entergy.com
From: Jason Drake <Jason.Drake@nrc.gov>
Sent: Tuesday, January 27, 2026 6:41 AM To: Couture III, Philip <pcoutur@entergy.com>; Mahan, Cecil <cmahan@entergy.com>; McCoy, Jack
<JMCCOY1@entergy.com>; NORRIS, GREGORY P <GNORRIS@entergy.com>
Subject:
Clarification on River Bend Alternative Request VRR-RBS-2025-01 Importance: High
HIGH RISK: UNTRUSTED EXTERNAL SENDER. DO NOT click links, or open attachments, if sender is unknown, or the message seems suspicious in any way. DO NOT provide your User ID or Password.
- All,
In support of the NRC review for acceptance, please review the following information and provide clarification as noted.
River Bend Alternative Request VRR-RBS-2025-01 submittal, Section 9.0 Basis/Justification for Relief Request provides SWP-RV91B Test History in Table 1 as bellow:
Table 1, SWP-RV91B Test History
Date Work Order Description Results 3/30/2005 00059556 Set Pressure Testing and Replacement of SWP-RV91B Satisfactory 6/4/2009 51512728 Set Pressure Testing and Replacement of SWP-RV91B Satisfactory 6/14/2011 00268580 Set Pressure Testing and Replacement of SWP-RV91B Unsatisfactory, As-found tested lifted high at 173 psig with set pressure tolerance acceptance criteria of 135-165 psig.
(Reference CR-RBS-2011-04695) 6/7/2016 52543321 Set Pressure Testing and Replacement of SWP-RV91B Satisfactory
In Section 7.0 REASON FOR RELIEF REQUEST, states in part that ASME OM Code, 1-1390, 10-year performance requirement will not be met when it is due on February 9, 2026. After this date RBS will not be non-compliant with the ASME OM Code.
NRC staff found in Table 1 that valve SWP-RV91B was tested on 6/7/2016 and ASME OM Code requirement of test is due on February 9, 2026, for which 12-month extension is being requested under this Alternative Request VRR-RBS-2025-1.
Table 1 shows that valve SWP-RV91B tested previously in 2005, 2009, 2011, and 2016, these testing intervals are less than the ASME OM Code Required every 10-year. The licensee is requested to clarify the reason of testing valve SWP-RV91B at interval less that the Code Required 10-year.
Please contact me with any questions or if you would like to schedule a call to discuss.
Thank you,
Jason Drake Project Manager Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation
Phone: (301) 415-8378
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