3F0587-02, Submits Addl Info Re NUREG-0737,Item II.E.1.1, Emergency Feedwater Sys Review, Per NRC 870331-0402 Meeting Request

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Submits Addl Info Re NUREG-0737,Item II.E.1.1, Emergency Feedwater Sys Review, Per NRC 870331-0402 Meeting Request
ML20215L488
Person / Time
Site: Crystal River Duke Energy icon.png
Issue date: 05/06/1987
From: Eric Simpson
FLORIDA POWER CORP.
To:
NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
RTR-NUREG-0737, RTR-NUREG-737, TASK-2.E.1.1, TASK-TM 3F0587-02, 3F587-2, NUDOCS 8705120261
Download: ML20215L488 (2)


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Florida Power C 0R POR ATiO N May 6, 1987 3F0587-02 Document Control Desk U.S. Nuclear Regulatory Commission Washington, D.C. 20555

Subject:

Crystal River Unit 3 Docket No. 50-302 Operating License No. DPR-72 NUREG 0737, Item II.E.1.1 Emergency Feedwater System Review NRC Request for Additional Information

Dear Sir:

As a result of the meetings held at CR-3 from March 31, 1987 through April 2,1987, on the above subject, the NRC personnel in attendance requested additional information. This information is summarized below. Due to the volume and nature of this information only one copy, already sent to Mr.

Harley Silver, is hereby placed on the docket.

1. CR3 Loss of Main Feedwater Event Frequency. This data only includes challenges to the Emergency Feedwater (EFW) System resulting from loss of main feedwater. This data includes the detailed basis for the CR3 loss of main feedwater (LFMW) rate, data, and brief description of each event occurring from original plant startup through December 1986.
2. EFW Pump Demand Failure Rate. This data consists of the detailed basis for EFW pump failure rates (demands and failures) through December 1986.
3. CR3 EFW Reliability Study utilizing NUREG-0611 Data consisting of the EFW unreliability combining the EFW model from the current CR3 EFW reliability study wi th the NUREG-0611 data and assumptions.

4 The Human Error reference for the time reliability correlation (TRC) curve used in the CR3 PRA.

8705120261 870506 PDR ADOCK 05000302 p PDR GENERAL OFFICE: 3201 Thirty fourth Street South e P.O. Box 14042

(813) 866 5151 f)N A Florida Progress Company jb

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Letter # 3F0587-02 May 6, 1987

~ Emergency Feedwater System Review 5.. The EFW upgrade Reliability- Analysis for CR3 ' document numbers i32-1125434-02 dated 6/82. and 32-1126041-00 dated 12/81. These documents- are stamped " SUPERSEDED" and have been repl aced - - by other, documents.

6. Three -Pump EFW . Reliability Analysis for CR3 dated 7/81. This document has also been stamped " SUPERSEDED" and has been replaced by the current EFW reliability. study.

Sincerely, E.C. Simpson, Acting Director Nuclear Site Support EMG/am xc: Dr. J. Nelson Grace Regional Administrator,- Region II Mr. T.F. Stetka Senior Resident Inspector