ML20236U922

PN-75-118:on 751101-03,fish Mortality on Intake Screens of Circulating Water Sys Exceeded Environ TS Action Level of 5000 Per Day on Three Consecutive Days.Two Circulating Water Pumps Were Shutdown on 751103 & One Was Shut Down on 751104

ML20236U922
Person / Time
Site:	Indian Point
Issue date:	11/05/1975
From:	Jennifer Davis, Dreher F, Thornburg H NRC OFFICE OF INSPECTION & ENFORCEMENT (IE)
To:
References
PN-75-118, NUDOCS 9807310180
Download: ML20236U922 (1)

Text

~y y.sy< wvvrev w g pDV y VGKwfw PRELIMINARY NOTIFICATION - NOT FOR PUBLIC DISCLOSURE November 5, 1975 (3 t_-

PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE --PN-75-118

,, This preliminary notification constitutes EARLY notice of events of POSSIBLE safety or public interest significance. The information presented is as initially received without verification or evaluation and is basically all that is known by OIE staff as of 8:00 a.m. on the date of this notification. IT SHOULD BE SPECIFICALLY NOTED THAT THIS NOTIFICATION MAY CONTAIN INFORMATION THAT LATER MAY BE DETERMINED TO BE INACCURATE OR INCONSISTENT. AN OFFICE OF INSPECTION AND ENFORCEMENT

. NOTIFICATION OF AN INCIDENT OR OCCURRENCE (BLUE SHEET) SUBSEQUENTLY WILL BE ISSUED IF WARRANTED.

Facility: Indian Point-2 (DN 50-247)

Subject:

POWER REDUCTION DUE TO HIGH FISH MORTALITY  :,

On November 1, 2, and 3, 1975, fish mortality (primarily white perch and i blueback herring) on the intake screens of the Circulating Water System i was 11,600, 13,400 and 7200 respectively. These values exceeded the  !

Environmental Technical Specification action level of 5000 per day on three consecutive days. To reduce mortality two circulating water pumps were shutdown on November 3 and one was shut down on Novembe'r 4. This ggg reduced power from 100% to 30%. ~

l

.,.m Although fish mortality is unpredictable on a given day, values of this  :

(' magnitude were projected in the Environmental Reviews of this plant and l action levels were established to prevent unnecessary excessive con- l tinued mortality. '

Media interest is expected because of press attention given to environmental matters and plant availability.

A press release is not planned.

The State of New York has been informed. k' OIE received notification of this occurrence by telephone from T. Ferrera, d{

Engineer and W. Cahill, Vice President at 4:30 p.m. and 5:15 p.m., November N 3, respectively.

3 A

Contact:

FADreher, IE x7261 HDThornburg, IE x7353 JGDevis, IE x7541 Distribution:

Chairnan Anders Commissioner Mason S. J. Chilk, SECY l Commissioner Gilinsky Commissioner Rowden G. F. Murphy, JCAE l Commiss 6ner Kennedy' C. C. Kammerer, CA - -

l L. V. Gossick, EDO D. F. Knuth, IE J. A. Harris, PA  ;

i B. C. Rusche, NRR J. La Fleur, ISP T. J. McTiernan, AIA K. R. Chapman, NMSS H. K. Shapar, ELD

. Transmitted: P Bldg f  ; H St Rk ; MNBB Crk ; Luge e,1 k=

' O'RELIMINARY NOTIFICATION - NOT FOR PUBLIC DISCLOSURE 9807310100 751105

• PDR I&E PN-75-118 PDR t