ML19317G192

RO-77-86:on 770712,SP-511 Acceptance Criteria Not Met by Unit 1 & 2 Batteries While in Mode 1 Operation.Caused by Recording Specific Gravity Prior to Battery Stabilization After Electrolyte Addition

ML19317G192
Person / Time
Site:	Crystal River
Issue date:	08/08/1977
From:	Stewart W FLORIDA POWER CORP.
To:
Shared Package
ML19317G191	List: ML19317G190 ML19317G192
References
NUDOCS 8002280834
Download: ML19317G192 (2)

Text

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[ r CONTROL r OCK:l l l l l l l (PLEA 7E PRINT ALL REQUIRED INFCRMAT;r.

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25 26 30 31 32 CATEcoRv "'7PE T $$RE CCCx!T NUMBER EVENT DATE REPCRT CATE O 1 CON T l -l -l l Ll l Ll l 0 l 5 l 0 l --l 0 l 3 l 0 l 2 l l0 l7 l1l2 l7 l 7l l 0 l 8 l 0 l 8 l 7 l 7.

7 8 57 58 59 60 61 68 69 74 75 EVENT DESCRIPTION O l In mode 1 operation, Unit #3 was notified that Units 1 & 2 batteries had failed to meht 7 89 .

c3 l the acceptance criteria of SP-511, contrary to Tech Specs 3.8.1.1.a.

Redundancy was main-7 89 04 l tained with the emergency geaerators. First time occurrence. The SP was re-run and tile y f batteries were declared operable within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.

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<tER 77-863 e 7 89 PauE E CCE COMPONENT CCCE SUPPUER 7tMR VCLADON -

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7 89 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION s Oe lThe previous quarterly specific gravity rsadings were recorded prior to the batteries " I

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Os l stabilizing after an electrolyte addition. The specific gravity of any cell was not belew _,

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,,y_l the Tech Spec requirement of 1.20.

6 FacuTv METuco cp ST&TUS -  % POWER oTHER STATUS CISCOVE.RY OtSCOVERY DESCRtPTION - - -

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ACTMTV CCATENT

- AELIASED~ cF RELEASE AMOUNT CF ACTMTY -

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12 1zl LrJ l NA I I Ni 7 8 9 10 11 44 45 EC PEDSONNEL EXPOSURES NUMBER TYPE DESCMTCN ~

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7 89 11 12 13 EC PERSONNEL INJURIES -

NUMBER CESCRIPTCN 14 8'9 l0l0!0l l NA' 7 11' 12 BC OFFSITE CONSECUENCES .

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~ 7 89 . SC LOSS OR DAMAGE TO FACIUTY TYPE CESCRPTON

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NA 7 89 10 c; PUBUCITY '

._7 $89l . i; ADDITIONAL FACTORS

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l SEE A1TACHED SUPPLEMENTARY INFORMATION '

7 89 W. P. Stewart ( i \Q

! - NAME*. \ PHONE: 813/866-4159 ww . . . . . .

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SUPPLEMENTARY INFORMATION

1. Report No.: 50-302/77-86 .

2. Facility: Crystal River Unit #3

3. Report Date: 8 August 1977

4. Occurrence Date: 12 July 1977

5. Identificatica of Occurrence:

Failure to have two independent circuits between the offsite transmission network and the onsite class 1E distribution system contrary to Technical Specification 3.8.1.1.a.

6. Conditions Prior to Occurrence:

Mode 1 power operation.

7. Description of Occurrence: f At 1110, Unit #3 was notified that the Units 1 & 2 batteries had not met the acceptance 5' criteria of the Quarterly Battery Check, Surveillance Procedure SP-511. The Units 1 & 2 batteries had exceeded the .01 drop in the specific gravity from the previo ts quartkr's surveillance. A start of the emergency diesels was made to verify opera-bility. The batteries were determined to be operable as the specifi:: gravity was greater than the Technical Specification requirement of 1.20.

8. Designation of Apparent Cause:

The greater than .01 drop in the specific gravity was due to the previous quarter's readings being recorded before the batteries had stabilized after an electrolyte addition.

9. Analysis of Occurrence:

There was no safety hazards to the plant or public as the batteries were functional at all times, and the emergency diesels were operable, and available.

10. Corrective Action:

None required as the batteries were well within all Tech Spec requirements.

11. Failure Data:

This was tha first occurrence of the specific gravity dropping more than the .01 limit.

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