ML13112A408

MF1022-NMP1-Letter to Licensee-Supplemental Information Requirements

ML13112A408
Person / Time
Site:	Nine Mile Point
Issue date:	04/24/2013
From:	Bhalchandra Vaidya Plant Licensing Branch 1
To:	Costanzo C Nine Mile Point
Vaidya B, NRR/DORL/LPL1-1, 415-3308
References
TAC MF1022
Download: ML13112A408 (4)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 April 24, 2013 Mr. Christopher Costanzo Vice President Nine Mile Point Nine Mile Point Nuclear Station, LLC P. O. Box 63 Lycoming, NY 13093

SUBJECT:

NINE MILE POINT NUCLEAR STATION, UNIT NO.1 - UNACCEPTABLE LICENSE AMENDMENT REQUEST - RE: DIESEL GENERATOR INITIATION DEGRADED VOLTAGE TIME DELAY SETTING CHANGE WITH OPPORTUNITY TO SUPPLEMENT (TAC NO. MF1022)

Dear Mr. Costanzo:

By letter dated March 8, 2013, Nine Mile Point Nuclear Station, LLC (NMPNS) submitted a license amendment request (LAR) for Nine Mile Point Nuclear Station, Unit No. 1 (NMP1). The proposed amendment would modify Technical Specification (TS) Table 3.6.2i, "Diesel Generator Initiation," by revising the existing 4.16kV Power Board 102/103 Emergency Bus Undervoltage (Degraded Voltage) Operating Time value and updating the Set Point heading title. The purpose of this letter is to provide the results of the U.S. Nuclear Regulatory Commission (NRC) staff's acceptance review of this [amendment/relief] 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 (including the technical specifications) must fully describe the changes requested, and following as far as applicable, the form prescribed for original applications. 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 the information delineated in the enclosure to this letter is necessary to enable the NRC staff to make an independent assessment regarding the acceptability of the proposed [amendment/relief] request in terms of regulatory requirements and the protection of public health and safety and the environment.

In order to make the application complete, the NRC staff requests that NMPNS supplement the application to address the information requested in the enclosure by COB May 16,2013. This will enable the NRC staff to complete its detailed technical review. If the information responsive to the NRC staff's request is not received by the above date, the application will not be accepted for review pursuant to 10 CFR 2.101, and the NRC staff will cease its review activities associated with the application. If the application is subsequently accepted for review, you will be advised of any further information needed to support the NRC staff's detailed technical review by separate correspondence.

C. Costanzo -2 The information requested and associated time frame in this letter was discussed with John Dosa of your staff on April 22, 2013.

If you have any questions, please contact the Nine Mile Point Units 1 and 2 Project Manager, Bhalchandra K. Vaidya, at (301) 415-3308.

Sincerely, Bhalchandra Vaidya, Project Manager Plant Licensing Branch 1-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-220

Enclosures:

As stated cc w/encl: Distribution via Listserv

REQUEST FOR SUPPLEMENTAL INFORMATION REQUI RED TO COMPLETE ACEPTANCE REVI EW REGARDING LICENSE AMENDMENT REQUEST REGARDING DIESEL GENERATOR INITIATION - DEGRADED VOLTAGE TIME DELAY SETTING CHANGE NINE MILE POINT NUCLEAR STATION, LLC (NMPNS)

NINE MILE POINT NUCLEAR STATION, UNIT NO.1 DOCKET NO. 50-220 TAC NO. MF1022 The proposed amendment would modify Technical Specification (TS) Table 3.6.2i, "Diesel Generator' Initiation," by revising the existing 4.16kV Power Board 102/103 Emergency Bus Undervoltage (Degraded Voltage) Operating Time value and updating the Set Point heading title. However, this TS has a related degraded voltage relay dropout setpoint and current value of 2!3705 volts remains unchanged.

The ongoing Component Design Basis Inspections have identified inadequate voltage setpoints at several nuclear plants and the NRC recently issued Regulatory Issue Summary (RIS) 2011-12 "Adequacy of Electric Distribution System Voltages" to inform the industry about the findings at some plants. In order for the staff to complete the review of the proposed amendment request, please provide additional information on the voltage setpoint as requested below.

1. Validate that the voltage setpoint of 3705V satisfies the criterion delineated in the RIS as related to the starting and running voltage requirements for the safety related loads at all busses.

2. Provide excerpts from calculation(s) that establish the limiting voltage at various safety buses for equipment operability with the 102/103 Power Boards at 3705V.

Enclosure

ML13112A408 (*) - No substantial change in the e-mail dated April 16, 2013 OFFICE LPL 1-1\PM LPL 1-1\LA EEEB/BC(A)* LPL 1-1/BC LPL 1-1/PM NAME BVaidya KGoldstein RMathew SMeighan BVaidya DATE 04/24/2013 04/23/2013 04/16/2013 04/24/2013 04/24/2013