Letter Sequence Supplement |
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MONTHYEARL-21-028, 10 CFR 50.55a Request Number SR-2, Revision 0, Snubber Testing Extension2021-01-15015 January 2021
10 CFR 50.55a Request Number SR-2, Revision 0, Snubber Testing Extension
Project stage: Request
ML21027A2032021-01-27027 January 2021
NRR E-mail Capture - Perry Nuclear Power Plant - Acceptance of Relief Request Regarding Snubber Testing Extension
Project stage: Acceptance Review
ML21032A3422021-02-0101 February 2021
NRR E-mail Capture - Final RAI - Perry Request for Relief - Proposed Alternative Request SR-2, Rev. 0
Project stage: RAI
L-21-060, Response to Request for Additional Information Regarding 10 CFR 50.55a Request Number SR-2, Revision 0, Snubber Testing Extension2021-02-0808 February 2021
Response to Request for Additional Information Regarding 10 CFR 50.55a Request Number SR-2, Revision 0, Snubber Testing Extension
Project stage: Response to RAI
ML21049A2702021-02-16016 February 2021
NRR E-mail Capture - Perry Nuclear Power Plant - Request for Additional Information for Proposed Alternative Request SR-2, Rev. 0 (EPID: L-2021-LLR-0005) (2nd Round RAI)
Project stage: RAI
L-21-077, Response to Request for Additional Information Re 10 CFR 50.55a Request Number SR-2 Revision 0 Snubber Testing Extension2021-02-19019 February 2021
Response to Request for Additional Information Re 10 CFR 50.55a Request Number SR-2 Revision 0 Snubber Testing Extension
Project stage: Response to RAI
ML21055A8812021-02-24024 February 2021
10 CFR 50.55a Request Number SR-2, Revision 0, Snubber Testing Extension, RAI-EMIB-08 Supplement
Project stage: Supplement
ML21063A2532021-03-0505 March 2021
Issuance of Relief Request SR-2, Revision 0, from Certain Requirements of the ASME OM Code (EPID L-2021-LLR-0005 (COVID-19))
Project stage: Approval
2021-02-16
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Text
energy Energy Harbor Nuclear Corp.
Perry Nuclear Power Plant harbor 10 Center Road Perry, Ohio 44081 Rod L. Penfield 440-280-5382 Site Vice President, Perry Nuclear February 24, 2021 L-21-088 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001
Subject:
Perry Nuclear Power Plant Docket No. 50-440, License No. NPF-58 10 CFR 50.55a Request Number SR-2. Revision 0. Snubber Testing Extension.
RAI-EMIB-08 Supplement (EPID: L-2021-LLR-0005)
By letter dated January 15, 2021 (Accession No. ML21018A004 )), Energy Harbor Nuclear Corp. submitted 10 CFR 50.55a request SR-2, Revision 0, to the Nuclear Regulatory Commission (NRC). Request SR-2 proposed a one-time extension of operational readiness testing for Perry Nuclear Power Plant snubbers scheduled for testing during the upcoming spring 2021 refueling outage. By letters dated February 8, 2021 and February 19, 2021 (Accession Nos. ML21039A785, and ML21050A417, respectively) Energy Harbor Nuclear Corp. responded to NRC requests for additional information. The NRC requested clarification of the February 19, 2021 letter during a February 23, 2021 telephone conference call. Energy Harbor Nuclear Corp. provides the supplemental information below to clarify the February 19, 2021 letter.
The Lisega hydraulic snubber defined test plan group (Lisega DTPG) selected for the spring 2021 refueling outage includes the four snubbers listed below that have service life end dates in 2021 and 2023.
Lisega Snubber 1B21-H0445 1B21-H0453 1E51-H0073 1E51-H2078
Perry Nuclear Power Plant L-21-088 Page 2 The four listed snubbers were selected for replacement in accordance with ISTD-5311, "Initial Sample Size and Composition," paragraph b, due to their service life end dates in 2021 and 2023. Energy Harbor Nuclear Corp. plans to physically remove, test, and replace the four listed snubbers in the spring of 2021 refueling outage to support their continued service life beyond the spring of 2023 refueling outage. Except for the four listed snubbers, Energy Harbor Nuclear Corp. does not plan to physically replace snubbers monitored for service life during the spring 2021 refueling outage.
Since Energy Harbor Nuclear Corp. requested relief from operational readiness testing for the spring of 2021 refueling outage, and the four listed snubbers had been selected as part of the Lisega DTPG 10-percent testing sample plan, the four listed snubbers will be removed from the Lisega DTPG and replaced with four different snubbers selected in accordance with ISTD-5300, "The 10% Testing Sample," prior to the spring of 2023 refueling outage to ensure compliance with code requirements.
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.
Sincerely, Penfield, Rod 55166 site vp Pmfldd, Rod 55166 I am approving this document Feb 24 2021 5:09 l'M Docu ~ .
Rod L. Penfield cc: NRC Region Ill Administrator NRC Resident Inspector NRR Project Manager
