ML051460268

Notes from 04/17/2005 Millstone 3 Alert

ML051460268
Person / Time
Site:	Millstone
Issue date:	04/17/2005
From:	- No Known Affiliation
To:	Office of Nuclear Reactor Regulation
References
FOIA/PA-2005-0207
Download: ML051460268 (6)

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(R) 0829 Mill-3 Rx and SI Trip because of low steam pressure on WBb steam line. MSIVs closed. Several main steam safety valve lifted. Primary safety lifted and then reseated. Entered E-0.

0842 Millstone 3 declared an Alert Cidue to main steam safety relief valve lift on UBI steam generator (20 Main steam safety valves total at Millstone-3). Reactor trip occurred. SI occurred.

0953 NRC entered Monitoring Mode NRC Requested ERDS to be initiated - Dominion having some difficulty in establishing ERDS 1005 First responder arrived in Region I IRC 1010 NRC Requested ERDS to be initiated - Dominion having some difficulty in establishing ERDS 1040 NYS contacts NRC Ops Center to request event briefing.

1045 R. Bores contacted RI IRC. CT notified and NYS (A. Feeney) will be notified.

Bores ETA @ IRC - 11:30.

1054 Status update - Terry turbine started and then tripped restarted currently feeding with three aux feed pumps.

1058 SRI in the Millstone control room. MSIV's are closed, ADVs are being used for pressure, three AFW pumps in service 1105 Status update from Dominion - Cause for trip is not determined. Dominion has considered tampering and has no reason to believe that tampering is an issue.

After SI pressurizer went solid. Met SI termination criteria. Established normal charging currently pressurizer level 64% and pressurizer pressure 2002 psig.

Dominion has send some individuals to the armory but state personnel are not present. Dominion has some personnel in its corporate EOF. Radiation levels are normal. No evidence of a primary/secondary leak. Dominion is developing criteria for terminating from the Alert. An increase of level in the PRT indicates evidence of some primary system leakage.

1113 ERDS has not yet been established 1130 W. Lanning requested SRI to provide briefing on the event.

1132 W. Lanning / Max Schnieder updating Ellis - PRL 64% PRT 82% increasing slowly 2200 RX pressure. Dominion developing termination criteria. No evidence of tampering but still being purused. ADVs controlling pressure. During the week replaced power supply on pressure instruments for the WB" steam line.

Page 1

I - _'n I Robert Bores - Millstone IR 1 update.doc Page I1 Page 11 I Robert Bores Millstone IR 1 uDdate.doC FEMA, Region One 99 High Street Boston, MA 02110 617-956-7501 INCIDENT REPORT

1. INCIDENT REPORT: #1 (Update)

2. TYPE OF INCIDENT: CT-Alert Millstone-04/17/05

3. INCIDENT OCCURANCE: 04/17/05,0843

4. INCIDENT REPORT: 04/17/2005,1225

5. DESCRIPTION: An Alert, Charlie One, Classification of an event at the Millstone Nuclear Power Station, Unit 3, occurred on the morning of 4/17/05 at 0843. There was an un-isolatable steam break in the secondary unit which did not involve a release of radiation. Since then the valve has been closed manually. The plant status is stable and there has been NO RELEASE OF RADIATION. There is no risk to off-site personnel.

Unit 2 is off-line for refueling at this time and there are 600 working on-site for this refueling. There have been no injuries and no evacuations on-site or off-site. The Utility EOF is fully staffed and the State EOC staff is either there or on their way. CT DEP Radiation Control Unit Staff and Dominion personnel are at the State EOC.

Unit 3 will go into a cold shutdown until it is determined what caused the valves to trip.

This could take some time due to the need to cool down at a rate of 100 degrees per hour.

A News Release has been issued by Dominion and the State EOC is getting that out to the locals and contiguous states.

The DEP Radiological Unit has sent an individual to the State EOC. Dr. Wildes, the Direcotr of the Radiation Program for CT concurs with the Licensee's control room and EOF staff that there has been NO Radiological release and there is NO radiological contamination on site because this incident occurred on the secondary side of the unit where there is no radiation.

This is considered to be a minor event and will hopefully be closed out today.

6. LOCATION: Millstone Nuclear Power Station, Unit 3, Waterford, Connecticut

IRobert Bores - Millstone IR 1 upate.doc Pae2I21 Page I Robert Bores- Millstone IR1 update.doc

7. SOURCE OF INFORMATION: State of Connecticut lead Radiological Planner; State of Connecticut Operations Officer.

8. STATE AND LOCAL RESPONSE: State EOC is staffed with Emergency personnel, Department of Environmental Protection staff and Licensee Liaisons

9. FEDERAL ASSISTANCE: FEMA Region I's State Liaison Officers to the State of Connecticut have been placed on standby. At this time the State does not expect to request their deployment.

10. ADDITIONAL INFORMATION and CONTACT: There will be another conference call at 1330. The Region will participate and be in communication with Connecticut and the Nuclear Regulatory Commission until the incident closes.

CONTACT: Deborah S. Bell, Technical Services Branch Chief and RAC Chair Home lelephone: 207-938-2378 Cellular: 617-447-0484 Email: Deborah.bell@dhs.gov