ML19317G205

RO 77-81E:on 770712,discharge Point Temp Exceeded Tech Spec Limits for More than 3-h.Caused by High Intake Temp & High Power Level.Incident Revealed During 770727 Environ Data Review.Temp Increase Notification Requires Prompt Action

ML19317G205
Person / Time
Site:	Crystal River
Issue date:	08/04/1977
From:	Stewart W FLORIDA POWER CORP.
To:
Shared Package
ML19317G199	List: ML19317G198 ML19317G205
References
NUDOCS 8002280842
Download: ML19317G205 (2)

Text

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I.

s UCENSEE EVENT REPORT

[ (V'~') CONTROL BLOCK:l l l l l l l

[PLEASE PRINT ALL REQUIRCD INFCR?.1 ATlCTC 1 B I AE

• ECENSE NUMBER *

. TYPE '

lT lL l Cl Rl Pl 3l l 0 l 0*l-l 0 l 0 l 0 l 0 l 0 l-l 0 l 0 l l 4l 1l 1l 1l 1l l0 l4 l 7 09 14 15 25 23 . 30 31 32 CATEConY TP u DOCKET NUM0ER EVEr47 cATE REPoni cATE O 1 CONT l - l - l lT l lL l l 0 l 5 l 0 l-l 0 l 3 l 0 l 2 l l 0 l 7 l1 l2 l7 l 7l l 0 l 8 l0 l4 l7 l7 l 7 8 57 50 59 60 61 68 69 74 75 GO EVENT DESCRIPTION E5 l An Environmental Data Review on 27 July 1977 revealed that the point of discharge temperaturp 7 09 0 l exceeded 103 F for a period greater than 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> on 12 July 1977 contrary to ETS' 2.2.1. .B 7 n9 . gg O4 l Redundancy NA. First occurrence. The POD temperature returned to acceptable limits 7 89 l 6

g l within a period of 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />.

7 09 bl 7 09 (LER 77-81E) pnME SO E CoCE COMPONENT CoCE Tu R VOLATCN

• O 7 89 10 lWlEl [F_l lZ lZ lZ lZ l Z lZ l l Zl l Zl 9 l9 l9 l l Nl 7 11 12 17 43 44 47 48 -

CAUSE DESCRIPTION 'S laloj l This. event was a result of the combination of high intake temperature and the high power j.

7 89 80 Q l levels of Units 1, 2, and 3. Prompt action upon notification of impending temperature l

7 lL9 increases will preclude recurrence. 60 l

l uCuTY uCTwoo or *

$1&TUS  % POWER oTHER STATUS cGCovEAY oSCoVERY CESCAPTON 70 1

9 W 10 l1l0l0l l 12 13 NA l 44 lBl 45 l

46 NA l

CO ACTMTY CosTENT

• nELEASEo AMOUNT CF ACTMTV . LoCATCN OF AELEASE 1

l Zl of[Zj RELEASE l NA l l NA l

7 0 9 10 11 44 45 00 PERSONNEL EXPOSURES NUMDER TYPE DESCRIPTON 8 I ol of ol 7 89 11 L2]

12 I

13 NA l 60-PERSONNEL INJuniES NUM0ER DESCRnPTON

[1jdj l0l0l0l l NA l

7. 89 11 12 60 OFFSITE CONSECUENCES DE I NA .

l 7 00 00 LOSS OR OAMAGE TO FAC:LITY TYI'E CESCIT.PTON

@dl NA 7 89 10 l LO PUBLICITY Ql 7 89 NA l

i;O DITIONAL FACTCRS a

7 au See attachad Supplerentary In formation b9og ggQ # Q' ,j ou unJ l 7 09 d j uu NAME: T. P. Stewart f _/ fHONE: (813) 866-4159 CPO 4 ?. t . a. r. 7

SUPPLEMENTARY INFORMATION .

1. Report No.: 50-302/77-81E

2. Facility: Crystal River Unit #3

3. Esport Date: 4 August 1977

4. Occurrence Date: 12 July 1977 (discovered 27 July 1977)

5. Identification of Occurrence:

The point of discharge temperature exceeded 103 0 F for a time greater than 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />, contrary to Environmental Technical Specification 2.2.1. .

6. Conditions Prior to Occurrence:

Mode 1 power operation.

i

7. Description of Occurrence: .

At 1300 it was reported that as a result of reviewing Environmental Data, it was discovered that the point of discharge temperature exceeded 103 F for a period in.

excess of 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> between 2000 on 12 July and 0100 on 13 July 1977. The maximum recorded temperature of this time period was 103.30F. As the load demand of Units 1 and 2 were decreased, the temperature of the point of discharge returned to acceptable values.

j 8. Designation of Apparent Cause:

This event was caused by high intake temperature and the high power levels of Units 1, 2, and 3.

1 4

9. Analysis of Occurrence: i There

• ere no safety implications as a result of this event.

10. Corrective Action:

Prompt action upon notification of temperature increases approaching the specified  ;

limit will preclude recurrence. This action is require.d by =v4== circulating  ;

water discharge temperature Surveillance Procedure SP-439.

11. Failure Data: l This was the first occurrence of this event.

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