PNO-IV-99-032A, on 990801,Waterford 3 Operators Manually Tripped Reactor from 100% Power in Response to Indications of Failure of RCP 2B Seal.Pump Was Secured Immediately Following Plant Sd.New Baffle & Seal Assembly Was Installed: Difference between revisions
StriderTol (talk | contribs) StriderTol Bot insert |
StriderTol (talk | contribs) StriderTol Bot change |
||
| Line 14: | Line 14: | ||
| page count = 1 | | page count = 1 | ||
}} | }} | ||
{{#Wiki_filter:p | {{#Wiki_filter:p j | ||
_ ,This p,reliminary notification constitutes EARLY notice of events of 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 IV staff in Arlington, Texas on this date. | August 12,1999 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE PNO-IV-99-032A | ||
Facility | _,This p,reliminary notification constitutes EARLY notice of events of 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 IV staff in Arlington, Texas on this date. | ||
Facility Licensee Emernency Classification Entergy Operations, Inc. | |||
Notification of Unusual Event i | |||
Waterford 3 Alert f | |||
Killona, Louisiana Site Area Emergency Dockets: 50-382 General Emergency X Not Applicable | |||
==Subject:== | ==Subject:== | ||
' PLANT STARTUP FOLLOWING COMPLETION OF REPAIRS TO REACTOR | ' PLANT STARTUP FOLLOWING COMPLETION OF REPAIRS TO REACTOR | ||
- COOLANT PUMP SEAL This is an update to Preliminary Notification (PN) issued on August 3,1999. | |||
On August 1 at 9:49 p.m. (CDT), Waterford 3 operators manually tripped the reactor from 100 percent power in response to indications of a failure of the Reactor Coolant Pump 2B seal. Operators observed a loss of Reactor Coolant Pump 2B controlled bleed off flow which resulted in a high seal temperature. Plant procedures required that the reactor be manually tripped in response to the failed seal. The pump was secured immediately following the plant shutdown. The senior resident inspector responded to the site and verified that operator actions were appropriate and that plant equipment functioned as expected following the reactor trip. | On August 1 at 9:49 p.m. (CDT), Waterford 3 operators manually tripped the reactor from 100 percent power in response to indications of a failure of the Reactor Coolant Pump 2B seal. Operators observed a loss of Reactor Coolant Pump 2B controlled bleed off flow which resulted in a high seal temperature. Plant procedures required that the reactor be manually tripped in response to the failed seal. The pump was secured immediately following the plant shutdown. The senior resident inspector responded to the site and verified that operator actions were appropriate and that plant equipment functioned as expected following the reactor trip. | ||
The licensee cooled down the plant to Mode 5, cold shutdown, and drained the reactor coolant system to reduced inventory conditions to investigate the cause of the seal failure and perform repairs. The cause was identified as a cracked seal water heat exchanger baffle. A preliminary determination of fatigue failure was made, and further investigation will be pe formed by the licensee. A new bafne and seal assembly was installed and Reactor Coolant Pump 2B was retumed to service satisfactorily. | The licensee cooled down the plant to Mode 5, cold shutdown, and drained the reactor coolant system to reduced inventory conditions to investigate the cause of the seal failure and perform repairs. The cause was identified as a cracked seal water heat exchanger baffle. A preliminary determination of fatigue failure was made, and further investigation will be pe formed by the licensee. A new bafne and seal assembly was installed and Reactor Coolant Pump 2B was retumed to service satisfactorily. | ||
| Line 29: | Line 32: | ||
==Contact:== | ==Contact:== | ||
Tom Famholtz _ | Tom Famholtz _ | ||
Kriss Kennedy (504)783-6253 (817)860-8140 | |||
M_Ih9-032APDR 120025}} | \\ | ||
o\\ | |||
9908130177 990812 M_Ih9-032APDR 120025 | |||
'}} | |||
{{PNO-Nav|region=IV}} | {{PNO-Nav|region=IV}} | ||
Latest revision as of 01:41, 6 December 2024
| ML20210Q211 | |
| Person / Time | |
|---|---|
| Site: | Waterford  |
| Issue date: | 08/12/1999 |
| From: | Thomas Farnholtz, Kennedy K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | |
| References | |
| PNO-IV-99-032A, NUDOCS 9908130177 | |
| Download: ML20210Q211 (1) | |
p j
August 12,1999 PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE PNO-IV-99-032A
_,This p,reliminary notification constitutes EARLY notice of events of 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 IV staff in Arlington, Texas on this date.
Facility Licensee Emernency Classification Entergy Operations, Inc.
Notification of Unusual Event i
Waterford 3 Alert f
Killona, Louisiana Site Area Emergency Dockets: 50-382 General Emergency X Not Applicable
Subject:
' PLANT STARTUP FOLLOWING COMPLETION OF REPAIRS TO REACTOR
- COOLANT PUMP SEAL This is an update to Preliminary Notification (PN) issued on August 3,1999.
On August 1 at 9:49 p.m. (CDT), Waterford 3 operators manually tripped the reactor from 100 percent power in response to indications of a failure of the Reactor Coolant Pump 2B seal. Operators observed a loss of Reactor Coolant Pump 2B controlled bleed off flow which resulted in a high seal temperature. Plant procedures required that the reactor be manually tripped in response to the failed seal. The pump was secured immediately following the plant shutdown. The senior resident inspector responded to the site and verified that operator actions were appropriate and that plant equipment functioned as expected following the reactor trip.
The licensee cooled down the plant to Mode 5, cold shutdown, and drained the reactor coolant system to reduced inventory conditions to investigate the cause of the seal failure and perform repairs. The cause was identified as a cracked seal water heat exchanger baffle. A preliminary determination of fatigue failure was made, and further investigation will be pe formed by the licensee. A new bafne and seal assembly was installed and Reactor Coolant Pump 2B was retumed to service satisfactorily.
A reactor startup was commenced and criticality was achieved at 6:50 a.m. on August 10.
The main generator was connected to the grid, and the plant reached 100 percent power at 1:25 a.m. on August 11.
This information has been discussed with the licensee and is current as of August 12, 1999, at 8 a.m (CDT).
Contact:
Tom Famholtz _
Kriss Kennedy (504)783-6253 (817)860-8140
\\
o\\
9908130177 990812 M_Ih9-032APDR 120025
'