2CAN022001, Response to Request for Additional Information Related to Alternative VRR-ANO2-2019-1
| ML20042E776 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  (NPF-006) |
| Issue date: | 02/11/2020 |
| From: | Gaston R Entergy Operations |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 2CAN022001, EPID L-2019-LLR-0088 | |
| Download: ML20042E776 (4) | |
Text
10 CFR 50.55a 2CAN022001 February 11, 2020 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555
Subject:
Response to Request for Additional Information Related to Alternative VRR-ANO2-2019-1 Arkansas Nuclear One, Unit 2 NRC Docket No. 50-368 Renewed Facility Operating License No. NPF-6
References:
- 1.
Entergy Operations, Inc. (Entergy) letter to the U. S. Nuclear Regulatory Commission (NRC), Request for Alternatives subject to the Fifth 10-Year Interval of the Inservice Testing Program, Arkansas Nuclear One, Unit 2 (2CAN091901) (ML19246B361), dated September 3, 2019.
- 2.
NRC email to Entergy, Request for Additional Information (RAI) Related to Alternative Request VRR-ANO2-2019-1 for the Inservice Testing Program Fifth 10-Year Interval (EPID L-2019-LLR-0088), (2CNA022001)
(ML20036D309), dated February 5, 2020.
By letter dated September 3, 2019 (Reference 1), Entergy Operations, Inc. (Entergy), requested an alternative for Arkansas Nuclear One, Unit 2 (ANO-2) associated with the fifth 10-year in-service testing (IST) interval. Specifically, Entergy proposed, in part, an alternative to ISTC-3630(a), specifically related to the test frequency of certain Service Water (SW) valves (VRR-ANO2-2019-1).
In the course of review, the NRC determined that additional information was required to proceed with the review process (Reference 2). The enclosure provides relevant information from the NRC's request for additional information (RAI), including Entergy's response to the request.
If there are any questions or if additional information is needed, please contact Tim Arnold, Manager, Regulatory Assurance, Arkansas Nuclear One, at 479-858-7826.
Entergy Operations, Inc.
1340 Echelon Parkway Jackson, MS 39213 Tel 601-368-5138 Ron Gaston Director, Nuclear Licensing
2CAN022001 Page 2 of 2 I declare under penalty of perjury that the foregoing is true and correct.
Executed on February 11, 2020.
Respectfully, ORIGINAL SIGNED BY RON GASTON Ron Gaston RWG/dbb
Enclosure:
Response to Request for Additional Information Related to Alternative VRR-ANO2-2019-1 cc:
NRC Region IV Regional Administrator NRC Senior Resident Inspector - Arkansas Nuclear One NRC Project Manager - Arkansas Nuclear One Designated Arkansas State Official
Enclosure 2CAN022001 Response to Request for Additional Information Related to Alternative VRR-ANO2-2019-1
2CAN022001 Enclosure Page 1 of 1 Response to Request for Additional Information Related to Alternative VRR-ANO2-2019-1 RAI VRR-ANO2-2019-1 The alternative request is similar to a previously-approved request with respect to the ANO-2 Fourth 10-year IST interval (
Reference:
NRC letter to Entergy dated January 21, 2010, "Arkansas Nuclear One, Unit 2 - Request for Alternative VRR-ANO2-2009-1 for the Fourth 10-Year Inservice Testing Interval (TAC No. ME2407)" (ADAMS Accession No. ML093370316)).
In the previous alternative request, the licensee committed to perform leak testing of 2CV-1541-1 and 2CV-1560-2 on a rotating basis (once every 3 years for each valve) in accordance with plant procedures. In its previous request, the licensee stated, "If problems are found with the sample valve that results in leakage in excess of the limiting value for operability described in the test procedure, both valves will be tested during the same outage to verify operability." However, a similar statement is not included in the current alternative request.
Please explain the actions that Entergy will take should a valve leakage test value exceed the valve operability threshold, and/or explain why the commitment to leak test the other valve, should the sample valve exceed the operability threshold, is not included in current alternative request VRR-ANO2-2019-1.
Entergy Response As stated in the Reference 1 request, one of the two subject valves will be leak tested each refueling outage on a rotating basis with an individual valve test frequency of once every two refueling outages in accordance with current plant procedures. If problems are found with the valve tested (2CV-1541-1 or 2CV-1560-2) that results in leakage in excess of the limiting value for operability described in the test procedure, both valves will be tested during the same outage to verify operability.
References
- 1.
Entergy Operations, Inc. (Entergy) letter to the U. S. Nuclear Regulatory Commission (NRC), Request for Alternatives subject to the Fifth 10-Year Interval of the Inservice Testing Program, Arkansas Nuclear One, Unit 2 (2CAN091901) (ML19246B361),
dated September 3, 2019.
- 2.
NRC email to Entergy, Request for Additional Information (RAI) Related to Alternative Request VRR-ANO2-2019-1 for the Inservice Testing Program Fifth 10-Year Interval (EPID L-2019-LLR-0088), (2CNA022001) (ML20036D309), dated February 5, 2020.