ML051460286
| ML051460286 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 04/17/2005 |
| From: | NRC Region 1 |
| To: | Mcginty T, Jason White NRC Region 1 |
| References | |
| FOIA/PA-2005-0207 | |
| Download: ML051460286 (4) | |
Text
Ieadqu~aters Operations Officer 1 - documents sent to HOO from Millstone-.-
Page 1 From:
To:
Date:
Subject:
Headquarters Operations Officer 1 John White; Region 1 Incident Response Center; Tim McGinty 4/17/05 2:17PM documents sent to HOO from Millstone Headquarters Operations Officer U.S. Nuclear Regulatory Commission Phone: (301) 816-5100 Fax: (301) 816-5151 E-mail: H001 @nrc.gov
>>> Region 1 Incident Response Center 04/17/05 01 :44PM >>>
FAX NO. 860 437 2739 P. 02 NRC Event Notification Form (Sheet 1 of 2)
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EVENT 1-jr Non-Elmergency 4-Hr Non-Eniergency 8-Hr Non-Erergency CIASSIFMCATION 1D CFR 50.72 (b) l) 10 CFR 50.72 (b)(2) 10 CFR 50.72 (b)(3)
GENERAL EMERGENCY TS Devation (I) 7T Required Shat-(ii)(A) Dcgraded Condition down STMARBEAMEROENCY (iv)(A)
ECCS Discharge to (il)(B)
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RCS tion that Dogrades Safety ALEXr 60 Day Optional (iv)(B) RPS Actuatlon (jv)(A) Specificd System Ac X
10 CFR SQ.73 (a)(1)
(_srm) twallad UNUSUAL EVET Invalid Specified System Ac-(xl)
Offslta Notification (v)(A)
Safc Shutdown C-tuation_
pabilijy 50.72 NON-EMEROENCY (v)(B)
R1HR Capability PHYSIC&L SECURrIY (v)(C) Control of Rad Re.
(73.71) leaso MATERIALEXPOSURE (v)(D)
Accident Mitigatian
_fTNESS FOR DUITY (xii)
Offsite Medic;d OTHER UNSPECIFIED RE-(xiii)
Last ENS QUIREMBNT (IDENTIFY)
INFORMATION ONLY (xii)
Lost Othcr Aaess-
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04/17/2005 SUN 13:46
[TX/RI NO 9923] [a002
E APR-17-2005 SUN 01:43 PM MP MANAGER PUBLIC INFO.
s FAX NO.
860 437 2739 P. 03 NRC Event Notification Form (Sheet 2 of 2)
NOTUIICATIONS YES NO WILL BE ANYTHIN UNUSUAL OR NOT yES NOE)
UNDERSTOOPD (EXPLAIN SHEET I)
NRC RESIDENT DID ALL SYSTEMS FUNCrION yES NO 0 AS RFQUIRED7 (EXPLAIN SHEEr I)
STATE MODE OF OPERATION UNTlL CORRECrEDS.
LOCAL EST1h{AXED PBSTART DATE; W
OTHER GOV AGENCIPS ADDmONALINFOONBACK YES NOt MEDIAJPRESS REL WEE RADIOLOGICAL RELEASES: CHE:CK OR FI.L IN APPLICABLE ITEMS LIQUID GASEOUS UNPLANNED PLANNED ONGOING TERMNATED l RLEASE RELEASE RELEA SE RELLASE_
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RM ALARMS AREAS REASE EXCEEDED EVACUATED PERSONNELILXPOSED OR OFFSITE PROTECTIIY ACTIONS State trelutsm path~ in descripzion CONTAMINATED RECOMMENDED I
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%TS. LIMIT HOO GUIDE Total 96 TS. LIMIT KOO GUiDE (C~scc)Activity (Ci)
Noble Gas 0.1 Cl/wc 1000 Ci Todine l0pCi/sec 0.OlCi Pantculate I kCiec, l mCI Liquid (excluding nitlum & dissolved noblC gSes) 10 pCurnin 0.1 Ci iJquid (triiwn) 0.2 Ci~ln 5Ci Tout0 Activity PLANT STACK CONDENSEEJAIR MAIN So OTHER EJECTOR STEAM LINE BLOWDOWN RAD MONITOR READ-INGS:
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RCS OR SC TUIIE LEAKS: CIECK OR FILL IN APPLICAILE ITEMS:
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LIST OF SAF=LY ReLATED EQUIPMENT NOT OPERATIONAL:
SM/DSEO Signature: 74. d 4
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,;>¢ 99 of 115 04/17/2005 SUN 13:46
[TX/RI NO 99231 fa003
APR-17-2005 SUN 01:44 PM MP MANAGER PUBLIC INFO.
FAX NO. 860 437 2739 P. 04 Attachment to April 17, 2005 Event Notification Summary of Event At approximately 0830 on April 17,2005 Millstone Unit 3 experienced an automatic reactor trip from full power. The Reactor is in a stable shutdown condition and is proceeding to Mode 5 cold shutdown. No release of radioactivity other than those minor releases associated with normal plant operation has occurred. There were no personnel injuries associated with the event.
In addition to the Reactor Trip, half-train Safety Injection (SI) and half-train Main Steam Isolation (MSI) actuations occurred. Control room personnel were successful at manually initiating full SI and MSI. SI has since been terminated and RCS pressure control has been restored. Multiple steam line safety valves (MSSV) lifted with at least one MSSV indicating a failure to reclose. As a result, an ALERT was declared at approximately 0853 due to the failure of at least one MSSV failing to reclose. All MSSV's are
.currently closed. Auxiliary Feedwater (APW) actuated automatically as expected, however; the turbine driven auxiliary feedwater pump (TDAFWP) tripped on start-up and was subsequently reset locally. Both motor driven auxiliary feedwater pumps (MDAFWPs) operated as expected to maintain steam generator water levels. Due to the additional inventory injected to the Reactor Coolant System (RCS) as a result of the SI actuation, the pressurizer filled and a primary system safety valve (PSSV) actuated at a lower than expected pressure. All PSSV's are currently closed, however; there is indication of leakage past either a PSSV or Pilot Operated Relief Valve (PORV). Upon alignment of the Charging system to Refueling Water Storage Tank recirculation flow path, 2 valves had indication of packing leakage. Those packing leaks have been terminated.
The cause of the event is under investigation.
04/17/2005 SUN 13:46
[TI/RX NO 99231 aOO4