IR 05000220/2015004

Integrated Inspection Report 05000220/2015004 and 05000410/2015004

ML16039A151
Person / Time
Site:	Nine Mile Point
Issue date:	02/04/2016
From:	Anthony Dimitriadis Reactor Projects Branch 1
To:	Bryan Hanson Exelon Generation Co, Exelon Nuclear
Dimitriadis A
References
EA-14-192 IR 2015004
Download: ML16039A151 (37)

Text

{{#Wiki_filter:ary 4, 2016

SUBJECT:

NINE MILE POINT NUCLEAR STATION, LLC - INTEGRATED INSPECTION REPORT 05000220/2015004 AND 05000410/2015004

Dear Mr. Hanson:

On December 31, 2015, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at the Nine Mile Point Nuclear Station, LLC (NMPNS), Units 1 and 2. The enclosed inspection report documents the inspection results, which were discussed on January 13, 2016, with Mr. Peter Orphanos, Site Vice President, and other members of the NMPNS staff.

NRC inspectors examined activities conducted under your licenses as they relate to safety and compliance with the Commissions rules and regulations and with the conditions of your licenses. The inspectors reviewed selected procedures and records, observed activities, and interviewed personnel.

No NRC-identified or self-revealing findings were identified during this inspection.

In accordance with Title 10 of the Code of Federal Regulations 2.390 of the NRCs Rules of Practice, a copy of this letter, its enclosure, and your response (if any) will be available electronically for public inspection in the NRCs Public Document Room or from the Publicly Available Records component of the NRCs Agencywide Documents Access and Management System (ADAMS). ADAMS is accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).

Sincerely, /RA/ Anthony Dimitriadis, Chief Reactor Projects Branch 1 Division of Reactor Projects Docket Nos. 50-220 and 50-410 License Nos. DPR-63 and NPF-69

Enclosure:

Inspection Report 05000220/2015004 and 05000410/2015004 w/Attachment: Supplementary Information

REGION I== Docket Nos. 50-220 and 50-410 License Nos. DPR-63 and NPF-69 Report Nos. 05000220/2015004 and 05000410/2015004 Licensee: Exelon Generation Company, LLC (Exelon) Facility: Nine Mile Point Nuclear Station, LLC (NMPNS) Unit 1 and Unit 2 Location: Oswego, New York Date: October 1, 2015, through December 31, 2015 Inspectors: K. Kolaczyk, Senior Resident Inspector E. Miller, Resident Inspector G. Stock, Resident Inspector J. DeBoer, Emergency Preparedness Inspector T. Fish, Senior Operations Engineer C. Franklin, General Engineer S. Horvitz, Project Engineer A. Rosebrook, Senior Project Engineer B. Sienel, Resident Inspector Approved by: Anthony Dimitriadis, Chief Reactor Projects Branch 1 Division of Reactor Projects Enclosure

SUMMARY

Inspection Report 05000220/2015004 and 05000410/2015004; 10/01/2015 - 12/31/2015;

NMPNS, Units 1 and 2; Routine Integrated Inspection Report.

This report covered a 3-month period of inspection by resident inspectors and announced inspections performed by regional inspectors. No findings were identified. The U.S. Nuclear Regulatory Commissions (NRCs) program for overseeing the safe operation of commercial nuclear power reactors is described in NUREG-1649, Reactor Oversight Process, Revision 5.

REPORT DETAILS

Summary of Plant Status

Unit 1 began the inspection period at 100 percent power. On October 3, 2015, operators reduced reactor power to 70 percent to place reactor recirculation pump 15 into service and perform a rod sequence exchange. Operators restored power to 100 percent the same day.

On October 23, operators reduced reactor power to 85 percent to restore reactor recirculation pump 11 to service and perform control rod blade leakage testing. Operators restored power to 100 percent the same day. On December 12, operators reduced reactor power to 50 percent to perform main steam isolation valve (MSIV) partial stroke testing, turbine stop valve testing, and control rod stroke time testing. Operators restored reactor power to 100 percent the same day.

Unit 1 remained at or near 100 percent for the remainder of the inspection period.

Unit 2 began the inspection period at 100 percent power. On December 4, 2015, operators reduced reactor power to 83 percent to perform turbine valve testing and a rod pattern adjustment. On December 5, during turbine combined intermediate valve testing, the combined intermediate stop valve and intercept valve pair #4 failed to open following stroke testing.

Operators held reactor power at 80 percent during troubleshooting. On December 6, following replacement of the test solenoid valve for combined intermediate valve #4, the valves were successfully reopened. Operators continued with the planned rod pattern adjustment and reduced reactor power to 70 percent. Following the rod pattern adjustment, operators returned Unit 2 to 100 percent power on December 6. Unit 2 remained at or near 100 percent for the remainder of the inspection period.

REACTOR SAFETY

Cornerstones: Initiating Events, Mitigating Systems, and Barrier Integrity

==1R04 Equipment Alignment

.1 Partial System Walkdown

a.

==

Inspection Scope The inspectors performed a partial walkdown of the Unit 2 diesel generator building normal system ventilation prior to planned testing of the Division II diesel generator on December 1, 2015.

The inspectors selected this system based on its risk-significance relative to the reactor safety cornerstones at the time it was inspected. The inspectors reviewed the applicable operating procedures, system diagrams, the Updated Final Safety Analysis Report (UFSAR), technical specifications (TSs), and the impact of ongoing work activities on redundant trains of equipment in order to identify conditions that could have impacted the systems performance of its intended safety functions. The inspectors also performed field walkdowns of accessible portions of the systems to determine if system components and support equipment were aligned correctly and were operable. The inspectors examined the material condition of the components and observed operating parameters of equipment to verify that there were no deficiencies. The inspectors also reviewed whether Exelon staff had properly identified equipment issues and entered them into the corrective action program (CAP) for resolution with the appropriate significance characterization. Documents reviewed for each section of this inspection report are listed in the Attachment.

b. Findings

No findings were identified.

.2 Full System Walkdown

a. Inspection Scope

On December 21, 2015, the inspectors performed a complete system walkdown of accessible portions of the Unit 1 hydrogen and oxygen concentration in containment monitoring system to verify the existing equipment lineup was correct. The inspectors reviewed operating procedures, surveillance tests, drawings, equipment lineup check-off lists, and the UFSAR to verify the system was aligned to perform its required safety functions. The inspectors also reviewed electrical power availability, equipment line heating, and hanger and support functionality. The inspectors performed field walkdowns of accessible portions of the systems to verify system components and support equipment were aligned correctly and operable. The inspectors confirmed that systems and components were aligned correctly, free from interference from temporary services or isolation boundaries, environmentally qualified, and protected from external threats. The inspectors also examined the material condition of the components for degradation and observed operating parameters of equipment to verify that there were no deficiencies. Additionally, the inspectors reviewed a sample of related issue reports (IRs) and work orders (WOs) to ensure Exelon appropriately evaluated and resolved any deficiencies.

b. Findings

No findings were identified. ==1R05 Fire Protection