ML20064G398

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Forwards Summary Tabulation of Control Rods Failing to Fully Insert During Reactor Scram for Calendar Year 1977,per NRC Ltr of 780829.Rept of Drives Replaced During Current Refueling Outage Included in Oct 1978 Monthly Rept
ML20064G398
Person / Time
Site: FitzPatrick Constellation icon.png
Issue date: 12/04/1978
From: Early P
POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK
To: Ippolito T
Office of Nuclear Reactor Regulation
References
FOIA-79-149 JNRC-78-60, NUDOCS 7812110153
Download: ML20064G398 (2)


Text

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POWER AUTHORITY OF THE STATE OF NEW YORK t o Col.uMaus Clact.2 NEW Yonx. N. Y.10019 (212) 397-6200

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FREDERICK R. CLARK

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WILSU R ,G,R O N DE RICHARD M. FLYNN . . . . .

RCEERT l. MILLONZI J December 4, 1978 "" 7;."a',7, .",

wn.uaM r. Luour JNRC-78-60 ""'"""*"."JR.

THO MAS McCJEANN Director of Nuclear Reactor Regulation United States Nuclear Regulatory Commission Washington, D. C. 20555 Attnntion: Mr. Thomas A. Ippolito Operating Reactors Branch No. 3 Division of Operating Reactors

Subject:

James A. FitzPatrick Nuclear Power Plant Summary Tabulation for Calendar Year 1977 Control Rods Failing to Fully Insert on Reactor Scrams Docket No. 50-333

Dear Sir:

In response to the U. S. Nuclear Regulatory Commission's August 29,1978 letter to the Power Authority requesting a review of plant records for calendar year 1977, a summary tabulation of control rods failing to fully insert during reactor scram is enclosed. As

', stated in the tabulation, a report of the drives that were replaced dur-l ing the current refueling outage was included in the FitzPatrick Monthly

! Report to the Commission for October 1978. An ongoing tabulation of any additional such events that may occur during calendar year 1978 -

will be maintained. _

Very truly youg, .

'N 7

l

/bk Paul I[ Early f Assistant Chief Engineer-Projects Cnc.

78121101 C f

- ~ -

James A. FitzPatrick Nuclear Power Plant Summary Tabulation For Calendar Year 1977 Control Rods Failing To Fully Insert On Reactor Scrams Position Date of Event Rods Initial Final 1/22/77 42-39 48 02 2/ 1/77 42-39 48 02 2/28/77 42-39 48 02 4/15/77 42-39 48 02 22-07 48 02 11/12/77 10-35 48 02 6 /21/78 18-15 48 02 9 / 8/78 10-15 48 02 18-15 48 02 14-23 48 02 34-15 48 02 The drives for rods 42-39 and 22-07 were replaced during the 1977 refueling outage and the old drives rebuilt. There was no apparent reason for the events.

The drives for rods 10-35, 14-23 and 34-15 have been replaced during the present refueling outage. Details regarding their

, replacement were included in the FitzPatrick Monthly Report to the Commission for Cetober 1978.

Drives 18-15 and 10-15 are not scheduled to be replaced at

' - this time.

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