ML19210C490

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Responds to 790626 Attachment to 790921 Ltr Requesting Info Re Multiple Equipment Failures.Two Events Resulted in Actuation of High Pressure Injection,Due to Operator Error. Affidavit Encl
ML19210C490
Person / Time
Site: Crystal River Duke Energy icon.png
Issue date: 11/09/1979
From: Griffin B
FLORIDA POWER CORP.
To: Eisenhut D
Office of Nuclear Reactor Regulation
References
TAC-43076, NUDOCS 7911140337
Download: ML19210C490 (3)


Text

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Florida Power C0mnoaaTeoe B.L. Griffin, P.E.

Sernor Vice Presdent Engineenng & Construction November 9,1979 Mr. Darrell G. Eisenhut Ac ting Director Division of Operating Reactors U.S. Nuclear Regulatory Commission Washington, DC 20555

Subject:

Crystal River Unit 3 Docket No. 50-302 Operating License No. DPR-72 Multiple Equipment Failures and Surveillance Testing Errors (9-21-79)

Dear Mr. Eise nhut:

In response to your letter dated June 26, 1979 which was transmitted to us as an attacament to your letter dated September 21, 1979, a review was performed of sll occurrences at our facility to determine if any were similar in nature to the one described in your letter. This review indicated that no occurrences at our facility have resulted in or from a series of multiple equipment failures, but two occurrences with initiating events similar to the one described have occurred at our facility.

Each of these events resulted in an actuation of High Pressure Injection due to operator error but in each case the error was quickly recognized and correctly responded to by the operator. There was no power change or control rod movement resulting from these events and all equipment operated as designed. A review of these events indicated that the potential for problems that had not previously been considered does not exist.

Our review only considered occurrences in Modes one through four since these are the only Modes where our Plant Protective Systems are capable of producing a similar sequence of events to those of the one described.

1323 356 7911140 3 37 p 3201 Thirty fourth Street South . P. O. Box 14042, St. Petersburg, Florida 33733 813 - 866 5151

. s Mr. Darrell G. Eisenhut Page Two November 9, 1979 Also a review was conducted of all applicable Engineered Safety System and Reactor Protective System Surveillance Procedures to determine whether appropriate cautioas are included and to ensure operators and supervisors are aware of the importance of avoiding challenges to the protective features of our facility.

This review indicated that our procedures provide adequate cautions to o pe ra to rs , technicians and supervisors sufficient to ensure that challenges to the protective features of our facility are avoided.

In addition to the above reviews that were conducted, the Nuclear Support Services Department is developing an NSSD procedure that will assure that multiple equipment failures in safety-related systems will be reviewed and analyzed to identify potential failure needs not previously considered, should they exist, that could lead to a significant reduction in the ability of safety systems to function as required. This procedure will be issued by January 15, 1980.

Should you have any questions concerning the above reviews or procedure, please call this office.

Very truly yours, FLORIDA POWER CORPORATION

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Senior Vice Pres [ dent Engineering & Construction EThewR07 D74 File: 3-0. 3. a. 3 1323 357

. s STATE OF FLORIDA COUNTY OF PINELLAS B. L. Grif fin states that he is the Senior Vice President, Engineering & Construction, of Florida Power Corporation; that he is authorized on the part of said company to sign and file with the Nuclear Regulatory Commission the information attached hereto; and that all such statements made and matters set forth therein are true and correct to the best of his knowledge, information and belief.

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LiGriffi/

Subscribed and swor 1 to before me, a Notary Public in and for the State and County above named, this 9th day of November, 1979.

Notary Public Notary Public, State of Florida at Large,

!!y Commission Expires: August 8, 1983 1323 558

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