Headquarters Daily Report
JUNE 18, 1999
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REPORT NEGATIVE NO INPUT
ATTACHED INPUT RECEIVED RECEIVED
HEADQUARTERS X
REGION I X
REGION II X
REGION III X
REGION IV X
PRIORITY ATTENTION REQUIRED MORNING REPORT - HEADQUARTERS JUNE 18, 1999
MR Number: H-99-0053
NRR DAILY REPORT ITEM
GENERIC COMMUNICATIONS
Subject: Information Notice 99-19, issuing
NRC INFORMATION NOTICE 99-19: Rupture of the Shell Side of a Feedwater
Heater at the Point Beach Nuclear Plant, dated June 23, 1999
The U.S. Nuclear Regulatory Commission (NRC) is issuing this information
notice to alert addressees to the recent rupture of the shell side of a
feedwater heater at the Point Beach Nuclear Plant.
Technical contact: K. Parczewski, NRR Nick Fields, NRR
301-415-2705 301-415-1173
E-mail:kip@nrc.gov E-mail: enf@nrc.gov
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REGION IV MORNING REPORT PAGE 2 JUNE 18, 1999
Licensee/Facility: Notification:
Entergy Operations, Inc. MR Number: 4-99-0018
Waterford 3 Date: 06/18/99
Killona,Louisiana
Dockets: 50-382
PWR/CE
Subject: AUTOMATIC REACTOR TRIP AT WATERFORD 3
Discussion:
On June 14, 1999, the Waterford 3 plant experienced an automatic reactor
trip when the supply breaker to a nonsafety 6.9kV electrical bus tripped
open, causing it to deenergize (Event Notification 35820). Loss of the
bus resulted in loss of power to two of the four reactor coolant pumps
and a subsequent reactor trip. The plant responded as expected following
the loss of the electrical bus and the reactor trip.
Following the trip, the licensee performed diagnostic testing and
troubleshooting on circuits and components that could have caused the
loss of the electical bus. These activities did not reveal any condition
or component failure that could have caused the 6.9kV electrical bus to
deenergize. The licensee was unable to identify the root cause of the
event. The resident inspectors monitored the licensee's activities and
reviewed their conclusions. No issues were identified.
The licensee restarted the plant and connected the main turbine generator
to the electrical grid on June 16. On June 17, Region IV conducted a
conference call with plant personnel to discuss the scope and results of
the root cause evaluation. No issues were identified.
Regional Action:
Resident inspectors will continue to monitor licensee followup activities
associated with the reactor trip.
Contact: PHIL HARRELL (817)860-8250
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