ML20209B615

Responds to NRC Request for Info Re Y2K Readiness at Nuclear Power Plants.Gl 98-01 Requested Response on Status of Facility Y2K Readiness by 990701.Y2K Readiness Disclosure Attached

ML20209B615
Person / Time
Site:	Monticello
Issue date:	06/25/1999
From:	Hammer M NORTHERN STATES POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
GL-98-01, GL-98-1, NUDOCS 9907070280
Download: ML20209B615 (3)

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. fy Northern States Power Company i Monticello Nuclear Generating Plant 2807 West County Road 75 Monticello, MN 55362 June 25,1999 Document Control Desk Nuclear Regulatory Commission Washington, D.C. 20555 MONTICELLO NUCLEAR GENERATING PLANT  !

l Docket No. 50-263 License No. DPR-22 I i

Subject:

Response to Generic Letter (GL) 98-01, " YEAR 2000 READINESS OF COMPUTER SYSTEMS AT NUCLEAR POWER PLANTS" 1

The purpose of this letter is to respond to the Nuclear Regulatory Commission's request for I information regarding Year 2000 readiness at nuclear power plants. Generic Letter 98-01 requested a l response on the status of facility Y2K readiness by July 1,1999.

On January 14,1999, the Commission issued Supplement 1 to Generic Letter 98-01 to modify the request for information in the original generic letter.

The Supplement stated:

"In responding to this supplement to GL 98-01, the addressee should confirm Y2K readiness of the facility with regard to those systems within the scope of the license and NRC regulations, and those systems required for continued operation of the facility after January 1,2000. For those systems which are not Y2K ready as of July 1,1999, the addressee should provide a status and completion schedule for achieving readiness by the year 2000."

In response Monticello is voluntarily reporting facility readiness as outlined in Supplement I to Generic Letter 98-01. Enclosed is the Year 2000 Readiness Disclosure for Monticello, reporting the status of facility Y2K readiness. This disclosure is submitted under the guidelines of the " Year 2000 Information and Readiness Disclosure Act" (Public Law 105-271).

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Michael F. Hammer Site General Manager Monticello Nuclear Generating Plant c: Regional Administrator-Ill, NRC State of Minnesota $b NRR Project Manager, NRC Resident inspector, NRC Attn: Steve Minn Nuclear Energy Institute M

9907070280 990625 PDR ADOCK 05000263 P PDR 6 2$ W $151:i!JCINSEGeeris 1.eues3GLD80lRESP. doc

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Enclosure to letter Year 2000 Readiness Disclosure This year 2000 readiness disclosure is made for the Monticello Nuclear Generating Plant under the " Year 2000 Information and Readiness Disclosure Act" (Public Law 105-271).

This disclosure addresses the Y2K readiness of the facility with regard to those systems within the scope of the license, NRC regulations, and other systems required for continued operation of the facility after January 1,2000. A facility that is "Y2K Ready" has followed a prescribed program to identify and resolve Y2K issues so the facility can operate reliably while meeting commitments.

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Northern States Power has conducted a year 2000 readiness program similar to that outlined in Nuclear Utility Year 2000 Readiness, NEI/NUSMG 97-07. The program applies to software, hardware and firmware whose failure due to a Y2K problem would prevent the performance of the safety function of a structure, system or component. Additionally, the program applies to l; any software, hardware, or firmware whose failure due to a Y2K problem would prevent continued operation of the nuclear facility well beyond December 31,1999. The facility program also includes identifying and, where appropriate, remediating embedded systems.

The program provided for risk management efforts and development of contingency plans for key rollover dates.

The Y2K readiness program has been completed through the detailed assessment phase for those systems required for operation of the Monticello Nuclear Generating Plant. The following remediation remains to achieve year 2000 readiness at Monticello:

1. TIP Services Application The TIP (Traversing Incore Probe) Services application collects TIP information from the Automated Traversing Incore Probe units while monitoring reactor power, ,

rod position and core flow. The TIP Services application is not required during ]

affected Year 2000 rollover dates and does not impact plant operations or safety because it executes "On-Demand" only. The TIP Services application is only used every 2000 hours0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br /> and during reactor startup. After the transition to the Year 2000, this application will not be required until after the scheduled outage. 4 Monticello site testing, which has been completed to date, has shown this application will function properly. The vendor has stated that this application will  !

function properly. Testing done at other sites with this application and similar  !

configurations has demonstrated that this application will function properly during the Year 2000 transition. The TIP Services application is expected to function properly into year 2000 and beyond based on information provided by the vendor, knowledge of the system design, and the testing that has been completed. l However, fully integrated Y2K testing of the TIP Services function has not been completed because the Y2K test environment did not have reactor variables used for a J

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data consistency checking available from a fully integrated 3D Monicore system.

During Y2K testing of the TIP Services function, the 3D Monicore system remairrd configured for monitoring of actual plant operation and isolated from the Y21C ten environment used for testing the TIP Services function.

Additional TIP Services application testing will be performed to confirm proper operation prior to September 1,1999, using simulated plant variables to be provided by a newly-configured duplicate 3D Monicore system.

Upon completion of this item, the Monticello Nuclear Generating Plant will be "Y2K Ready."

Further, contingency plans have been developed to mitigate the impact of Y2K-induced events at key rollover dates.

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