05000302/LER-1978-003-03, /03L-O:on 780104,Unit 2 Battery Failed to Meet Quarterly Battery Test SP-511 Criteria.Caused by Electrolyte Stratification Due to Battery No Lead Condition.Request for Engineering Info Initiated to Evaluate & Recommend Solut

/03L-O:on 780104,Unit 2 Battery Failed to Meet Quarterly Battery Test SP-511 Criteria.Caused by Electrolyte Stratification Due to Battery No Lead Condition.Request for Engineering Info Initiated to Evaluate & Recommend Solution

ML19308D303
Person / Time
Site:	Crystal River
Issue date:	01/27/1978
From:	Cooper J FLORIDA POWER CORP.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19308D300	List: 05000302/LER-1978-003, Forwards LER 78-003/03L-0 05000302/LER-1978-003-03, /03L-O:on 780104,Unit 2 Battery Failed to Meet Quarterly Battery Test SP-511 Criteria.Caused by Electrolyte Stratification Due to Battery No Lead Condition.Request for Engineering Info Initiated to Evaluate & Recommend Solut
References
LER-78-003-03L, LER-78-3-3L, NUDOCS 8002270749
Download: ML19308D303 (2)

LER-1978-003, /03L-O:on 780104,Unit 2 Battery Failed to Meet Quarterly Battery Test SP-511 Criteria.Caused by Electrolyte Stratification Due to Battery No Lead Condition.Request for Engineering Info Initiated to Evaluate & Recommend Solution

Event date:
Report date:
3021978003R03 - NRC Website

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(SEE ATTACHED SUPPLEMENTARY INFORMATION SHEET) l s002270 7

s SUPPLEMENTA.3 INFORMATION

\\' Report No.:

50-302/78-03/03L-0 2.

U M11ty:

Crystal River Unic #3 3.

Report Date:

27 January 1978 4

Occurrence Date:

4 January 1978 5.

Identification of Occurrence:

Tailure to have two independent circuits between the offsite transmission network and the onsita Class 1E distribution system contrary to Technical Specification 3.8.1.1.a.

6.

Conditions Prict to.0ccurrence:

Mc + 1 power operation.

7.

Descripidon of Occurrence:

At 1500 Unit #3 was notified that the Unit #2 battery had failed to meet the requirements-of the Quarterly Battery Test, Surve111mes Procedure, SP-511, Upon notification, Unit,

1. 3 entered action statement A of Tech. Spec. 3.8.1.1.

The operability of both emergency.

diesel generatars was verified and the surveillance procedures for Power Distribution Breaker Alignment, SP-321 and Cable Tunnel Sump Pumps Operability, SP-322 were satis-factorily performed. The battery was charged and restored to the specified requirements within 18 hours2.083333e-4 days <br />0.005 hours <br />2.97619e-5 weeks <br />6.849e-6 months <br /> and 40 minutes of surveillance procedure failure, thus satisfying the Tech. Spec. action statement.

h. Designation of Apparent Cause:

The cause of this occurrence is determined to be stratification of the electrolyte due to the batts-les being in a "no load" condition.

9.

Analysis of Occurrence:

There was no safety hazard to the plant or public as redundant power sourens were available and demonstrated operable.

10.

Corrective Action

Florida Power Production Engineering has initiated a..- uest for Engineering Information (REI) #PD6-77 to evaluate and recommend a solutiot c, this recurring problem.

Corrective action will be taken based upon the recas:mendation of this evaluation.

11.

Failure Data:

This is the fifth occurrence of this event as reported by LER's 77-14, 36, and 132.

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