PNO-II-96-065, on 960924,steam Line Rupture Occurred in Oconee Unit 2 Turbine Bldg.Licensee Activated Technical Support & Operations Support Ctrs to Assist in Response to Event.Nrc Resident Inspectors Responded Onsite to Event
| ML15239A376 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 09/25/1996 |
| From: | Carroll R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| References | |
| PNO-II-96-065, PNO-II-96-65, NUDOCS 9609260111 | |
| Download: ML15239A376 (2) | |
REGULA RY INFORMATION DSRBTOSSE LABY SYSTEM(RIDS)
ACCESSION NBR,-9609260111 DOC.DATE: 96/09/25 NOTARIZED: NO DOCKET #
FACIL:50-270-Oconee Nuclear Station, Unit 2, Duke Power Co.
-05000270 AUTH.NAME AUTHOR AFFILIATION CARROLL,R.E.
Region 2 (Post 820201)
RECIP.NAME RECIPIENT AFFILIATION
SUBJECT:
PNO-II-96-065:on 960924,steam line rupture occurred in Oconee Unit 2 turbine bldg.Licensee activated Technical C
Support & Operations Support Ctrs to assist in response to event.NRC resident inspectors responded onsite to event.
A DISTRIBUTION CODE: IE34F COPIES RECEIVED:LTR ENCL SIZE:
T TITLE: 50 Docket & Vendors PNO/Non-Routine Event/Safeguards Event (PN)
E NOTES:
G RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL 0
INTERNAL: ACRS 1
IL CENTER 1
R NRR/DISP/PIPB 1
N7D RPM P
3 1
NUDOCS FULL TXT
.1 OE DIR 1
RES/DET/EIB 1
RES/DRA 1
RES/DRA/DEPY 1
RES/DST 1
RES/DST DEPY 1
RES/RPHEB 1
1 RGN2 FILE 01 1
EXTERNAL: LITCO-BRYCE,J H 1
NOAC 1
NRC PDR 1
D 0
C U
M E
N T
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0 TOTAL NUMBER OF COPIES REQUIRED: LTTR 8'ENCL 16
- tember 25, 1996 PRELIMXNARY NOTIFICATION OF EVENT ORTUNUSUAL OCCURRENCE PNO-II-96-065 This preliminary notification constitutes EARLY notice of eventi
-POSSIBLE safety or public interest significance. The information is as initially received without verification or evaluation, and is basically all that is known by Region II staff in Atlanta, Georgia on this date.
Facility Licensee Emergency Classification Duke Power Co.
X Notification of Unusual Event Oconee 2 Alert Seneca,South Carolina Site Area Emergency Dockets: 50-270 General Emergency Not Applicable
Subject:
NOTIFICATION OF UNUSUAL EVENT - OCONEE UNIT 2 On September 24, 1996, at 4:44 p.m., a steam line rupture (located on an 18-inch diameter line between the second stage reheater drain tank 2B and the feedwater heaters) occurred in the Oconee Unit 2 turbine building. Unit 2, which was in the process of returning to power after a short maintenance outage, was manually tripped from about 55 percent power by the operators in response to indications of the break. The unit responded as expected and was stabilized in hot shutdown. The steam discharge was isolated when the unit was manually tripped, and there were no known radiological problems associated with the event. A Notification of Unusual Event (NOUE) was declared at 8:20 p.m., due to the discovery of collateral damage to equipment during a walkdown of the affected area.
The NOUE was terminated at 8:40 p.m., once it was determined that the collateral damage did not affect control of Unit 2 while it is shutdown.
The licensee activated their Technical Support and Operations Support Centers to assist in the response to this event. Seven employees sustained injuries and were transported offsite for medical treatment.
The injured personnel were not radioactively contaminated.
Unit 2 is currently being taken to cold shutdown to effect repairs and the licensee is preparing to conduct a corporate-led team investigation into the cause of the event. Cold shutdown is expected around 6:00 p.m.,
on September 25, 1996. Units 1 and 3, unaffected by this event, continue to operate at 100 percent power.
The NRC resident inspectors immediately responded onsite to the event. A Region II Branch Chief and additional inspectors were dispatched to the site.
The Region is conducting a special, reactive inspection of this event.
The State of South Carolina has been notified. There was considerable media interest and the licensee has issued several news releases. The NRC Headquarters Duty Officer was notified of this event at 5:55 p.m., on September 24, 1996.
This information is current as of 9:30 a.m., on September 25, 1996.
Contact:
R. E. CARROLL (404)331-5543 9609260111 960925 O
PDR I&E IN PNO-II-96-065 PDR