ML16293A583
| ML16293A583 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 10/17/2016 |
| From: | Pyle S Entergy Operations |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML16293A577 | List: |
| References | |
| 2CAN101602, WCAP-18166-NP, Rev 0 | |
| Download: ML16293A583 (2) | |
Text
~Entergy 2CAN101602 October 17, 2016 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555
SUBJECT:
Reactor Vessel Surveillance Capsule Technical Report Arkansas Nuclear One - Unit 2 Docket No. 50-368 License No. NPF-6
Dear Sir or Madam:
Entergy Operations, Inc.
1448 s. R. 333 Russellville, AR 72802 Tel 479-858-4704 Stephenie L. Pyle Manager, Regulatory Assurance Arkansas Nuclear One In accordance with 10 CFR 50, Appendix H, part IV, Entergy Operations, Inc. (Entergy) is submitting this letter to transmit the Arkansas Nuclear One, Unit 2 (AN0-2) reactor vessel surveillance capsule technical report, WCAP-18166-NP, Revision 0, "Analysis of Capsule 284 from the Entergy Operations, Inc. Arkansas Nuclear One, Unit 2 Reactor Vessel Radiation Surveillance Program," dated September 2016.
This capsule was withdrawn from the AN0-2 reactor vessel on October 25, 2015, in accordance with the capsule withdrawal schedule presented in AN0-2 Safety Analysis Report, Table 5.2-12. The capsule withdrawn is identified as W-284 with a withdrawal time of 30 Effective Full Power Years (EFPY). It was determined by the analysis that the actual capsule exposure time was 29.24 EFPY. The surveillance capsule report, in its entirety, is included in attachment to this letter.
The following are the conclusions based on the results of the Capsule W-284 testing.
- 1.
The measured percent decreases in the upper-shelf energy for the surveillance material contained in Capsule W-284 are less than the Regulatory Guide 1.99, Revision 2 predictions.
- 2.
Based on the credibility evaluation presented in the report, the AN0-2 surveillance plate and surveillance weld material are credible.
- 3.
With consideration of surveillance data, all beltline materials exhibit adequate upper-shelf energy levels for continues safe plant operation and are predicted to maintain an
2CAN101602 Page 2 of 2 upper-shelf energy greater than 50 ft-lb through end-of-license (32 EFPY) as required by 10 CFR 50, Appendix G.
This letter contains no new regulatory commitment.
If you have any questions concerning this submittal, please contact me.
Sincerely, 1!4({1 SLP/rwc
Attachment:
WCAP-18166-NP, Revision 0, "Analysis of Capsule 284 from the Entergy Operations, Inc. Arkansas Nuclear One, Unit 2 Reactor Vessel Radiation Surveillance Program," dated September 2016 cc:
Mr. Kriss Kennedy Regional Administrator U. S. Nuclear Regulatory Commission, Region IV 1600 East Lamar Boulevard Arlington, TX 76011-4511 NRC Senior Resident Inspector Arkansas Nuclear One P.O. Box 310 London, AR 72847 U.S. Nuclear Regulatory Commission Attn: Mr. Thomas Wengert MS 0-08B1 One White Flint North 11555 Rockville Pike Rockville, MD 20852