ML20236U237
| ML20236U237 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 06/18/1975 |
| From: | Jennifer Davis, Dreher F, Thornburg H NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| To: | |
| References | |
| PN-75-037, PN-75-37, NUDOCS 9807290402 | |
| Download: ML20236U237 (1) | |
Text
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l PRELIMINARY NOTIFICATION - NOT FOR PUBLIC DISCLOSURE June 18, 1975 5k[
PRELD!INARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE
--PN-75-37 This preliminary notification _ constitutes EARLY notice of events of POSSIBLE safety or public interest sir,nificance.
The information presented is as initially received without verification or evaluation and is basically all that is known by OIE staff as of 9:45 a.m. on 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 OF OCCURRENCE (BLUE SHEET) SUBSEOUD!TLY
~
VILL BE ISSUED IF WARRANTED.
...s Facilitv_:
Ginna Rochester Gas and Electric
Subject:
DAMAGE TO FEEDWATER SYSTEM The licensee reported that the turbine was manually tripped at 9:56 a.m.
on June 17, 1975 as a result of excessive feedwater piping vibration.
During startup the flow instability occurred at about 30% power as power level was being increased at the rate of 10% per hour.
A visual inspection revealed no apparent damage to pipe restraints *or containment
_ penetrations; however, some instrument sensing lines were rendered E
l inoperable.
Steam generator levels were normal throughout the transient and the reactor remained stable.
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IE estimates that the plant may be down for at least two days. Licensee evaluations of the problem are in progress.
Media interest is expected because of power outage.
[
The State of New York is being kept informed.
A press release is 8
l not planned.
/
OIE received notification on this occurrence by telephone from Mr. C. Platt, RG&E, at 5:15 p.m., 6/17/75.
Contact:
FADreher, IE x7261 HDThornburg, II x7353 JGDavis, IE x7541 l
Distribution:
Chairman Anders Commissioner Mason S. J. Chilk, SECY Commissioner Gilinsky Commissioner Rowden G. F. Murphy, JCAE Commissierrer Kennedy -
C. C. Kamerer, CA l
L. V. Gos-sich, EDO D. F. Knuth, IE J. A. Harris, PA B. C. Rusche, NRR H. H. Brown, ISP K. R. Chapman, NMSS H. K, Shapar, ELD Transmitted: P Bldg / O 'e % ; H St ' c ' ' c~.-~
- MD Bldg o s e n -.
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PRELIMINARY NOTIFICATION - NOT FOR PUBLIC DISCLOSURE 980'7290402 750618 'l j
PDR I&E i
PN-75-037 PDR 1
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