CNL-17-036, Response to NRC Request for Tva'S Consent to Imposition of New Requirement Related to Mitigation of Beyond-Design-Basis Events

Response to NRC Request for Tva'S Consent to Imposition of New Requirement Related to Mitigation of Beyond-Design-Basis Events

ML17061A121
Person / Time
Site:	Watts Bar
Issue date:	03/01/2017
From:	James Shea Tennessee Valley Authority
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
CNL-17-036
Download: ML17061A121 (3)

Text

Tennessee Valley Authority, 1101 Market Street, Chattanooga, Tennessee 37402 CNL-17-036 March 1, 2017 10 CFR 50.4 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555-0001 Watts Bar Nuclear Plant, Unit 2 Facility Operating License No. NPF-96 NRC Docket No. 50-391

Subject:

Watts Bar Nuclear Plant, Unit 2 - Response to NRC Request for TVA's Consent to Imposition of New Requirement Related to Mitigation of Beyond-Design-Basis Events

Reference:

NRC Letter to TVA, Watts Bar Nuclear Plant, Unit 2 - Request for Tennessee Valley Authority's Consent to Imposition of New Requirement Related to Mitigation of Beyond-Design-Basis Events, dated February 15, 2017 (ML17040A353)

In the referenced letter, the Nuclear Regulatory Commission (NRC) requested that the Tennessee Valley Authority (TVA) consent to the imposition of a new requirement for Watts Bar Nuclear Plant (WBN) Unit 2 without the NRC conducting a backfit analysis. This imposition would take place under the forthcoming Mitigation of Beyond-Design-Basis Events (MBDBE) final rule. The new requirement consists of the need to maintain the spent fuel pool (SFP) cooling strategies and guidelines during the future decommissioning of WBN Unit 2 until all irradiated fuel has been removed from the WBN shared SFP.

In this case, TVA, as the holder of Facility Operating License No. NPF-96 for WBN Unit 2, consents to the imposition of proposed new 10 CFR 50.155(b)(3) (80FR70610) to maintain or restore SFP cooling capabilities until all irradiated fuel has been permanently removed from the SFP without the NRC conducting a backfit analysis for this imposition on WBN Unit 2. TVA understands that a corresponding requirement is currently in place for this SFP under the license for WBN Unit 1 that does not end when WBN Unit 1 begins decommissioning; consequently, there is no safety issue and this consent is offered solely to address a regulatory gap efficiently.

U.S. Nuclear Regulatory Commission CNL-17-036 Page 2 February xx, 2017 The enclosure to this letter lists the new regulatory commitment associated with this submittal. Please address any questions regarding this response to Ed Schrull at 423-751-3850.

e President, Nuclear Licensing

Enclosure:

New Regulatory Commitment cc (Enclosure):

NRC Regional Administrator- Region II NRC Senior Resident Inspector- Watts Bar Nuclear Plant NRR Project Manager- Watts Bar Nuclear Plant

Enclosure 2 Watts Bar Nuclear Plant, Unit 2 New Regulatory Commitment Commitment Due Date/Event In accordance with 10 CFR 50.155(b)(3), TVA will revise the The next Updated Final Updated Final Safety Analysis Report to maintain or restore Safety Analysis Report spent fuel pool (SFP) cooling capabilities until all irradiated update following issuance fuel has been permanently removed from the SFP for WBN of 10 CFR 50.155(b)(3)

Unit 2.

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