PNO-I-96-087, on 961206,reactor Was Manually Scramed Due to EHC Oil Leak at Turbine Control Valve 2.Licensee Implemented One Wk Maint Outage to Repair EHC Pressure Switch & Several Other Balance of Plant & Drywell Items: Difference between revisions
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l | l DCS No.:05000352961206 Date: | ||
DCS No.:05000352961206 | Decereber 10, 1996 e | ||
PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE PN1-1-96-087 This preliminary 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 the Region I staff on this date, Facility: | |||
PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE PN1-1-96-087 This preliminary 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 the Region I staff on this date, Facility: | Licensee Emergency Classificatior; Notification of Unusual Event | ||
[ | [ | ||
Docket No.: | PECO Energy Alert l | ||
Limerick 2 Site Area Emergency l | |||
Philadelphia, Pennsylvania General Emergency BWR/GE-4 X Not Applicable l | |||
Docket No.: | |||
50-353 l | |||
License No.. | |||
NPF-85 Event No.: | |||
31419 Event Location Code: | |||
POW | |||
==SUBJECT:== | ==SUBJECT:== | ||
MANUAL REACTOR SCRAM AND SHUTDOWN GREATER THAN 3 DAYS At 11:38 pm on December 6.1996, operators at Limerick Unit 2 manually scrammed the reactor due to an electro-hydraulic control (EHC) oil leak at the No. 2 turbine control valve. Unit I was not affected by the Unit 2 event. An EHC pressure switch broke free from its support and ruptured the oil line. Plant personnel were alerted to the event by a turbine control valve half-scram and low EHC reservoir level. Following the scram the EHC leak was isolated to allow reactor pressure control with turbine bypass valves. Post-scram reactor response was as expected. | MANUAL REACTOR SCRAM AND SHUTDOWN GREATER THAN 3 DAYS j | ||
The licensee has implemented a one week maintenance outage to repair the EHC pressure switch and several other balance of plant and drywell items. The licensee expects to restart the unit on Friday. December 13. | At 11:38 pm on December 6.1996, operators at Limerick Unit 2 manually scrammed the reactor due to an electro-hydraulic control (EHC) oil leak at the No. 2 turbine control valve. Unit I was not affected by the Unit 2 event. An EHC pressure switch broke free from its support and ruptured the oil line. | ||
The resident inspectors will continue to follow the event. The licensee has issued a j | Plant personnel were alerted to the event by a turbine control valve half-scram and low EHC reservoir level. | ||
l | Following the scram the EHC leak was isolated to allow reactor pressure control with turbine bypass valves. | ||
this PN. | Post-scram reactor response was as expected. | ||
The licensee has implemented a one week maintenance outage to repair the EHC pressure switch and several other balance of plant and drywell items. | |||
The licensee expects to restart the unit on Friday. December 13. | |||
The resident inspectors will continue to follow the event. The licensee has issued a j | |||
press release. | |||
l The Commonwealth of Pennsylvania has been informed of this information contained in this PN. | |||
I | |||
==Contact:== | ==Contact:== | ||
Walter Pasciak (610)-337-5258 Neil Perry | Walter Pasciak (610)-337-5258 Neil Perry (610)-327-1344 I | ||
9612100080 961210 PDR | 9612100080 961210 PDR I&E PNO-I-96-087 PDR | ||
o DISTR.JBUTION: | |||
DISTR.JBUTION: | ~ | ||
0WFN TWFN LSI Mail: DCD Chairman Jackson AE00 PDR DOT:Trans only** | |||
0WFN | l Comm. Rogers IRM l | ||
l | Comm. Dicus ACRS OCAA NRC Ops Ctr OIP OCA NMSS OGC OIG INPO** | ||
I OPA RES NSAC** | |||
I | EDO OE OSP NRR** (Phone Verif: Violet Bowden 415-1168 or 415-1166) | ||
EDO OE OSP | SECY Regional Offices RI Resident Office Licensee: | ||
SECY Regional Offices | |||
(Reactor Licensees) | (Reactor Licensees) | ||
M General list for sending PNs by FAX Region I Form 83 (Rev. March 1996) 2 l}} | M General list for sending PNs by FAX Region I Form 83 (Rev. March 1996) 2 l | ||
--}} | |||
{{PNO-Nav|region=I}} | {{PNO-Nav|region=I}} | ||
Latest revision as of 02:19, 12 December 2024
| ML20135D660 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 12/10/1996 |
| From: | Pasciak W, Neil Perry NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | |
| References | |
| PNO-I-96-087, PNO-I-96-87, NUDOCS 9612100080 | |
| Download: ML20135D660 (2) | |
- - _ -. - - -
l DCS No.:05000352961206 Date:
Decereber 10, 1996 e
PRELIMINARY NOTIFICATION OF EVENT OR UNUSUAL OCCURRENCE PN1-1-96-087 This preliminary 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 the Region I staff on this date, Facility:
Licensee Emergency Classificatior; Notification of Unusual Event
[
PECO Energy Alert l
Limerick 2 Site Area Emergency l
Philadelphia, Pennsylvania General Emergency BWR/GE-4 X Not Applicable l
Docket No.:
50-353 l
License No..
NPF-85 Event No.:
31419 Event Location Code:
POW
SUBJECT:
MANUAL REACTOR SCRAM AND SHUTDOWN GREATER THAN 3 DAYS j
At 11:38 pm on December 6.1996, operators at Limerick Unit 2 manually scrammed the reactor due to an electro-hydraulic control (EHC) oil leak at the No. 2 turbine control valve. Unit I was not affected by the Unit 2 event. An EHC pressure switch broke free from its support and ruptured the oil line.
Plant personnel were alerted to the event by a turbine control valve half-scram and low EHC reservoir level.
Following the scram the EHC leak was isolated to allow reactor pressure control with turbine bypass valves.
Post-scram reactor response was as expected.
The licensee has implemented a one week maintenance outage to repair the EHC pressure switch and several other balance of plant and drywell items.
The licensee expects to restart the unit on Friday. December 13.
The resident inspectors will continue to follow the event. The licensee has issued a j
press release.
l The Commonwealth of Pennsylvania has been informed of this information contained in this PN.
I
Contact:
Walter Pasciak (610)-337-5258 Neil Perry (610)-327-1344 I
9612100080 961210 PDR I&E PNO-I-96-087 PDR
o DISTR.JBUTION:
~
0WFN TWFN LSI Mail: DCD Chairman Jackson AE00 PDR DOT:Trans only**
l Comm. Rogers IRM l
Comm. Dicus ACRS OCAA NRC Ops Ctr OIP OCA NMSS OGC OIG INPO**
EDO OE OSP NRR** (Phone Verif: Violet Bowden 415-1168 or 415-1166)
SECY Regional Offices RI Resident Office Licensee:
(Reactor Licensees)
M General list for sending PNs by FAX Region I Form 83 (Rev. March 1996) 2 l
--