ML17193A561

Forwards LER 80-037/03L-0

ML17193A561
Person / Time
Site:	Dresden
Issue date:	11/17/1980
From:	Scott D COMMONWEALTH EDISON CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17193A562	List: ML17193A561 ML19345A992
References
DJS-80-252, NUDOCS 8011250558
Download: ML17193A561 (2)

Text

• r.*.;')i?'.. ~:~*

e Comm~lealth Dresden RR. #1 Edison r Power Station

• Morris, Illinois* 60450 .

Telephone 815/942-2920

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DJS Ltr. 1180-252

• l"lrS.,.Rl"UUST ~itt ...

iofr I B JON SERVLW*

• BRANCH * * **

James G. Keppler, Regional Director Directorate of Regulatory Operations - Region III U.S. Nuclear Regulatory Connnission 799 Roosevelt Road Glen Ellyn, IL *60137 Reportable Occurrence Report ff80-37/03L-O; Docket #050-249 is being_,*

• submitted to your office in accordance with Dresden Nuclear Power*station Technical Specification 6.6.B*.2. (a), reactor protection system or engineered safety feature instrument settings whichare found to be less conservative than those. established by the technic~l specifications but which do not prevent the fulfillment of.the.functional requirements -of affected systems.

f)mAAlkJd rAt-D. J: .efcotti .

Station Superintendent Dresden Nuclear Pow.er Station DJS/nh Enclosure cc/ .Director of Inspection .& Enforcement Director. of Management Infonnation &* Program Control*

U.S. NRC, Document Management Branch File/NRC

.so112so 558'

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.-:~;;i._;.- ~*- LICENSEE EVENT REPORT -

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IL ID IR I s I 3 101 o I o LICENSEE' CODE.

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• LICENSE.NUMBER lo lo l(DI 25 26 4 I1 I 1 I 1 I 1 101

• LICENSE -TYPE :JO I

57 CAT 58 I

CON'T .

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~ 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION ANO PROBABLE CONSEQUENCES @ . .

iC01Tl I During normal operation, with DIS 500-2 in progress, level switch LIS 263-57B was found to trip at a differential pressure. which corresponded to a level set point of I IIIIJ I less than the Tech. Spec. limit (Table 3.2.1) of 84 inches. This was of minimal. safety!

I0 I 5 I .I significance since channel "A" and the redundant cha.nnel "B" instruments were operable* I

.[§))] There. was no effect on public health or safety previous. occ~rrences. RO. 76-57, Docket -

1 I o *1 7 I t__2E-23 7; 77-51., 80-_23, and 80-24, Docket 050-249*

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SYSTEM CAUSE . CAUSE COMP. VALVE

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_ NUMBER .*

IaI I a I I Loi 317 I  !:;..;-! -lol3I L!J l.=J .l£j 21 22 23 . 24 . 26 27 28 . 29 30 31 32 ACTION. FUTURE EFFECT SHUTDOWN . ~ ATTACHMENT . NPRD-4' . PRIME*COMP. COMPONENT T ..i.KEN ACTION ON PLANT METHOD HOURS 22 SUBMITTED FORM :>US. SUPPLIER

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44 47 CAUSE DESCRIPTION ANO CORRECTIVE ACTIONS @

'.I 1 Io I j* The cause' of this event was instrument drift. The. in~trument was immediately readjus:- I rrm ted and subsequent testing was satisfactor:i:ly performed. DIS 500-2 will continue to JIJTJ I be. done monthly.

~ 9--~~--~~~~~~~~~~~~~~~--~~~~~~-----~~~~~~~~~~~~~~~------80 FACILITY t3i)\ METHOD.OF A

. STATUS  %.POWER OTHER STATUS. \::::::J DISCOVERY DISCOVERY DESCRIPTION ~

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. ACTIVITY 10 CONTENT 12 1'3 C\

44 45 46 80 RELEA.SEO OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE @

w@ W@I....* __....N..../A___.,........_ _ _ ___ N/A

' 9 10 11 44 *45 80 PERSONNEL EXPOSURES ~

NUMBER 'r~ TYPE DESCRIP.TION '

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• 1

. N/A PERSONNEL INJURIES . (,;':;\

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~ I 0 I 0 I 0 I@. . N/A

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• 11 12 80 LOSS*OF OR DAMAGE TO FACILITY G

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