ML12268A153
| ML12268A153 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 01/30/2012 |
| From: | Exelon Generation Co |
| To: | NRC/RGN-III |
| References | |
| FOIA/PA-2012-0287 | |
| Download: ML12268A153 (2) | |
Text
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0Go Back Print I New Search I Home AR 01319908 Report Aff Fac:
Byron Aff Unit:
02 Aff System:
SY AR Type:
CR Owed To:
ACAPALL Status:
APPROVED Due Date:
02/29/2012 Event Date:
Disc Date:
01/30/2012 01/30/2012 CR LevellClass:
How Discovered:
WR/PIMS AR:
2/A H01 Orig Date:
01/30/2012 Equip Tag:
Action Request Details
Subject:
U2 REACTOR TRIP DUE TO ELECTRICAL FAULT AND UNUSUAL EVENT
==
Description:==
(b)(6)
(b)(6)
Originator: I Supv Contacted:
Condition
Description:
At 1002 U2 reactor tripped due to an aparent electrical fault. A loss of offsIte power followed. 2A and 2B Diesel generators energized the ESF buses. U2 SAT was Isolated based on reports of smoke. Investigation shows a failure of C Phase at the SAT disconnect.
Immediate actions taken:
Enteed 2BEP 0. The Main steam isolation valves were closed. Initiated actions per the BEPs.
Recommended Actions:
Perform a root cause. Subsequent IR's will be written for repairs.
Operable Basis:
Reportable Basis:
Functionality Basis:
(b)(6)
SOC Reviewed by:
01/30/2012 16:28:00 CST SOC Comments:
Send to Ops to generate root cause actions. Level 2 event due to plant trip per LS-AA-120. ZINWR 1/30/12 Assignments Assign #:
01 Assigned Status:
AWAIT/C To:
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Aff Fac:
Byron Prim Grp:
ACAPALL Due Date:
02/04/2012 Assign Type:
TRKG Sec Grp:
Orig Due Date:
Priority:
Schedule Ref:
Unit Condition:
Subject/Description:
U2 REACTOR TRIP DUE TO ELECTRICAL FAULT AND UNUSUAL EVENT