ML17338A272

NRR E-mail Capture - Exelon Fleet Request for Alternative to Revise Main Steam Isolation Valve Testing Frequency

ML17338A272
Person / Time
Site:	Dresden, Nine Mile Point, Oyster Creek, Clinton, Quad Cities, FitzPatrick, LaSalle
Issue date:	12/04/2017
From:	Blake Purnell Plant Licensing Branch III
To:	Deborah Neff Exelon Generation Co
References
L-2017-LLR-0134
Download: ML17338A272 (3)

Text

NRR-DMPSPEm Resource From: Purnell, Blake Sent: Monday, December 04, 2017 9:41 AM To: Neff, David B:(GenCo-Nuc)

Cc: david.helker@exeloncorp.com; Wrona, David

Subject:

Exelon Fleet Request for Alternative to Revise Main Steam Isolation Valve Testing Frequency (EPID L-2017-LLR-0134)

Mr. Neff:

By application dated November 1, 2017 (ADAMS Accession No. ML17306A014), Exelon Generation Company, LLC (the licensee) submitted a request in accordance with Paragraph 50.55a(z)(1) of Title 10 of the Code of Federal Regulations (10 CFR) for a proposed alternative to the requirements of 10 CFR 50.55a and the American Society of Mechanical Engineers Code for Operation and Maintenance of Nuclear Power Plants at Clinton Power Station, Unit No. 1; Dresden Nuclear Power Station, Units 2 and 3; James A. FitzPatrick Nuclear Power Plant; LaSalle County Station, Units 1 and 2; Nine Mile Point Nuclear Station, Units 1 and 2; Oyster Creek Nuclear Generating Station; and Quad Cities Nuclear Power Station, Units 1 and 2. The proposed alternative would allow the licensee to eliminate the quarterly partial-stroke exercise testing of the main steam isolation valves for each of these facilities.

The purpose of this email is to provide the results of the U.S. Nuclear Regulatory Commission (NRC) staffs acceptance review of this proposed alternative. The acceptance review was performed to determine if there is sufficient technical information in scope and depth to allow the NRC staff to complete its detailed technical review. The acceptance review is also intended to identify whether the application has any readily apparent information insufficiencies in its characterization of the regulatory requirements or the licensing basis of the plant.

The NRC staff has reviewed your application and concluded that it provides technical information in sufficient detail to enable the staff to complete its detailed technical review and make an independent assessment regarding the acceptability of the proposed alternative in terms of regulatory requirements and the protection of public health and safety and the environment. Given the lesser scope and depth of the acceptance review, as compared to the detailed technical review, there may be instances in which issues that impact the staffs ability to complete the detailed technical review are identified despite completion of an adequate acceptance review.

You will be advised of any further information needed to support the staffs detailed technical review by separate correspondence.

Based on the information provided in your submittal, the NRC staff estimates that review of this request will take approximately 200 hours8.333 days <br />1.19 weeks <br />0.274 months <br /> to complete. The staff expects to complete its review by May 31, 2018. These estimates are based on the staffs initial review of the application and they could change due to several factors, including requests for additional information. If there are emergent complexities or challenges in our review that would cause changes to the initial forecasted completion date or significant changes to the forecasted hours, I will inform you of the reason for the change and provide the new estimates.

Sincerely, Blake Purnell, Project Manager Plant Licensing Branch III Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission 1

Docket Nos. 50-461, 50-237, 50-249, 50-333 50-373, 50-374, 50-220, 50-410, 50-219, 50-254, and 50-265 2

Hearing Identifier: NRR_DMPS Email Number: 17 Mail Envelope Properties (Blake.Purnell@nrc.gov20171204094100)

Subject:

Exelon Fleet Request for Alternative to Revise Main Steam Isolation Valve Testing Frequency (EPID L-2017-LLR-0134)

Sent Date: 12/4/2017 9:41:01 AM Received Date: 12/4/2017 9:41:00 AM From: Purnell, Blake Created By: Blake.Purnell@nrc.gov Recipients:

"david.helker@exeloncorp.com" <david.helker@exeloncorp.com>

Tracking Status: None "Wrona, David" <David.Wrona@nrc.gov>

Tracking Status: None "Neff, David B:(GenCo-Nuc)" <david.neff@exeloncorp.com>

Tracking Status: None Post Office:

Files Size Date & Time MESSAGE 3206 12/4/2017 9:41:00 AM Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:

Recipients Received: