05000335/FIN-2011004-02
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Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | Unit 1 TS 3.7.3 requires, in part, that at least two independent CCW loops be operable in Modes 1, 2, 3, and 4. Contrary to this, on December 2, 2010, the licensee discovered the A and B CCW headers cross-tied thru a control room air conditioning unit, rendering the loops as not being independent. Immediate corrective actions taken upon discovery included returning the system valve lineup configuration to normal. This event was documented in CR 598902. The Region II senior risk analyst determined the finding was of very low risk Significance. On August 22, 2011, Unit 1 operators performed a rapid down power and manual reactor plant trip when excessive jelly fish entered the intake canal, causing high differential pressures across the intake cooling water traveling screens, reduced circulating water flows, and lowering condenser vacuum. The inspector was notified at home of the reactor trip and responded to the plant to assess plant conditions and determine if any complications occurred during the trip and reactor plant shutdown. The inspector toured the Unit 1 and Unit 2 intake structures and observed Unit 1 control room activities following the shutdown to hot standby. The inspector reviewed operating chronological logs, control room indications, post trip procedures, and interviewed control room operators to verify that operating restrictions and procedural requirements were met. The inspectors observed control room operator communications, procedure place keeping, and control room annunciator responses by the reactor operators at the control boards. The inspector reviewed documentation and operator actions associated with licensee procedures 1-EOP-01, Standard Post Trip Actions, and 1-EOP-02, Reactor Trip Recovery. |
| Site: | Saint Lucie  |
|---|---|
| Report | IR 05000335/2011004 Section 4OA7 |
| Date counted | Sep 30, 2011 (2011Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | R Reyes T Hoeg D Rich P Capehart M Meeks |
| INPO aspect | |
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Finding - Saint Lucie - IR 05000335/2011004 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Saint Lucie) @ 2011Q3
Self-Identified List (Saint Lucie)
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