ML19308D552
| ML19308D552 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 07/29/1977 |
| From: | Stewart W FLORIDA POWER CORP. |
| To: | |
| Shared Package | |
| ML19308D548 | List: |
| References | |
| NUDOCS 8002280984 | |
| Download: ML19308D552 (2) | |
Text
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l 4 l 1 l1 l1 l 1l 26 30 l0 [3 l 31 32 CATEooRY TYPE sEE DOCKET NUMBER EVENT DATE REPORT DATE 0 1 CONT l _ l _ l l Ll l Ll lo ls lo l-lo l3 lo l9 l l0 l7 l0 l7 l7 l 7l l 0 l 7 l2 l 9l 7l7 '
7 8 57 58 59 S3 61 68 69 74 75 E EVENT DESCRPTION 33 l The Auxiliary Building exhaust fan AHF-14D would'not restart after being secured for 7 89 -
t g l charcoal' filter sampling resulting in a condition contrary to Technical Specification 7 89 .
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, M l 3. 7.8.1. Redundancy was maintained with fans AHF-14A & 14C. This occurrence was non-7 89 . t.
g l repetitive. The low flow switch for AHF-14D was calibrated and fan restored operable 7 09 E
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gtg lwithin 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. (LER 77-76) '
7 89 pnug 6 sysitM causE COMPONENT COMPONENT CoCE CODE COMPONENT COCE suppuER MANuPACTupER violation
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7 89 10 11 12 l Cl Kl Tl Bl Rl Kl 17 lAl 43 44 l A l 1l 6 l 0 l 47 W48 -
CAUSE OESCR!PTION / ,
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e l This occurrence was due to the ARF-14D low flow switch shifting calibration. The low flow 7 89 6 a9 l switch was cali', rated and AHF-14D restored operable.-
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s % POWER oTHER STATUS Cs VE OSCoVERY CESC3PT:CN 1 y l1l~1l0l0l NA l @ l NA
! 78 9 10 12 ~~1 44 45 46. SC o O ELEASE AMOUNT OF ACTMTY LOCATON CF RELEASE 7 8 1
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Bi PERSONNEL EXPOSURES ,
NUMBER TYPE DESCRPTCN M l 0l 0l 0l (Z_j l NA 7 89 11 12 13 66 PERSONNEL IN. LURES -
s NUMBER DESCRPTON M l0l0l0l l NA 7 89 11 .1 2 BC OF'FSITE CONSECUENCES 7 89 nl -
NA UL LOSS OR OAMAGE TO FACILITY TYPE DESCRPTON .
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80 Ql 10 NA LC PUBLICITY 17 l va 7 89 UC ADOITIONAL FACTORS V8 9 l 80'29on9M9 0 ' F ud DE I .See Attached Supplementary Information 7 89 NAME*.
l W. P. Stewart -
PHONE: (813) 866-4159 5.
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GPO 481.,667 '
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.} ,, SUPPLEMENTARY INFORMATION C.
%. Repoet No.: 50-302/77-76
- 2. Facility: Crystal River Unit #3 *
- 3. Report Date: 29 July 1977
- 4. Occurrence Date: 7 July 1977
- 5. Identification of Occurrence:
Less than the minimum required number of Auxiliary Building exhaust fans in operation contrary to Technical Specification 3.7.8.1.
- 6. Conditions Prior"to Occurrence:
Mode 1 power operation.
- 7. Description of Occurrence: ;
At 1450 the Auxiliary Building ventilation fan AHF-14D was secured for required charcoal ll filter sampling. Upon completion of sampling, AHF-14D would not restart. AHF-14D nor- ;
mally is utilized with AHF-14B as one pair of required exhaust fans. With the loss of one pair of fans the 7 day action statement of Tech. Spec. 3.7.8.1 was entered. Mainten-ance was performed and ARF-14D was restored operable in approximately 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
- i. Designation of Apparent Cause:
The cause of this event was due to the fan's low flow switch being out of calibration.
- 9. Analysis of Occurrences The safety and health of the plant and public were not affected, as redundant auxiliary ventilation fans AHF-14A and AHF-14C were operable and in service.
- 10. Corrective Action:
The Auxiliary Building exhaust fan AHF-14D low flow switch was recalibrated and fan restored operable.
- 11. Failure Data:
This was the first occurrence of this event.
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