ML17156A572

NRR E-mail Capture - Clinton Power Station - Acceptance Review for License Amendment Request to Clarify RHR Subsystem Operability Requirements During Decay Heat Removal Operations

ML17156A572
Person / Time
Site:	Clinton
Issue date:	06/05/2017
From:	Jennivine Rankin Plant Licensing Branch III
To:	Schrage J Exelon Corp
References
MF9684
Download: ML17156A572 (3)

Text

NRR-PMDAPEm Resource From: Rankin, Jennivine Sent: Monday, June 05, 2017 1:15 PM To: Schrage, John L:(GenCo-Nuc)

Subject:

Clinton Power Station - Acceptance Review for License Amendment Request to Clarify RHR Subsystem Operability Requirements During Decay Heat Removal Operations (CAC No. MF9684)

Good afternoon, By letter dated May 4, 2017 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML17124A121), Exelon Generation Company, LLC (the licensee), submitted a license amendment request for Clinton Power Station, Unit No. 1. The proposed amendment would delete a Surveillance Requirement (SR) Note associated with TS 3.5.1, ECCS - Operating, TS 3.5.2, ECCS - Shutdown, and TS 3.6.1.7, Residual Heat Removal (RHR)

Containment Spray System, to more appropriately reflect the RHR system design, and ensure the RHR system operation is consistent with the TS Limiting Condition for Operation (LCO) requirements. In addition, the proposed amendment would insert a Note in the LCO for TS 3.5.1, TS 3.5.2, TS 3.6.1.7, TS 3.6.1.9, Feedwater Leakage Control System, and TS 3.6.2.3, Residual Heat Removal (RHR) Suppression Pool Cooling, to clarify that one of the required subsystems in each of the affected TS sections may be inoperable during alignment and operation of the RHR system for Shutdown Cooling with the reactor steam dome pressure less than the RHR cut in permissive value.

The purpose of this e-mail is to provide the results of the NRC staffs acceptance review of this amendment request. 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.

Consistent with Section 50.90 of Title 10 of the Code of Federal Regulations (10 CFR), an amendment to the license must fully describe the changes requested, and following as far as applicable, the form prescribed for original application.

Section 50.34 of 10 CFR addresses the content of technical information required. This section stipulates that the submittal address the design and operating characteristics, unusual or novel design features, and principal safety considerations.

The NRC staff has reviewed your application and concluded that it does provide technical information in sufficient detail to enable the NRC staff to complete its detailed technical review and make an independent assessment regarding the acceptability of the proposed amendment 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 NRC staffs ability to complete the detailed technical review are identified despite completion of an adequate acceptance review. If additional information is needed, you will be advised by separate correspondence.

Based on the information provided in your submittal, the NRC staff has estimated that this licensing request will take approximately 230 hours9.583 days <br />1.369 weeks <br />0.315 months <br /> to complete. The NRC staff expects to complete this review in approximately 12 months, which is May 2018.

If there are emergent complexities or challenges in our review that would cause changes to the initial forecasted completion date or significant changes in the forecasted hours, I will communicate the reasons for the changes, along with the new estimates during our routine interactions.

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, unanticipated addition of scope to the review.

If you have any questions, please contact me at (301) 415-1530.

1

Thanks, Jennie Jennie Rankin, Project Manager Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation 2

Hearing Identifier: NRR_PMDA Email Number: 3553 Mail Envelope Properties (Jennivine.Rankin@nrc.gov20170605131400)

Subject:

Clinton Power Station - Acceptance Review for License Amendment Request to Clarify RHR Subsystem Operability Requirements During Decay Heat Removal Operations (CAC No.

MF9684)

Sent Date: 6/5/2017 1:14:53 PM Received Date: 6/5/2017 1:14:00 PM From: Rankin, Jennivine Created By: Jennivine.Rankin@nrc.gov Recipients:

"Schrage, John L:(GenCo-Nuc)" <John.Schrage@exeloncorp.com>

Tracking Status: None Post Office:

Files Size Date & Time MESSAGE 3861 6/5/2017 1:14:00 PM Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:

Recipients Received: