05000316/LER-2078-004, Re Higher Steps of Rod P-8

Re Higher Steps of Rod P-8

ML18219C219
Person / Time
Site:	Cook
Issue date:	01/30/1978
From:	Shaller D Indiana Michigan Power Co
To:	James Keppler NRC/RGN-III
References
LER 1978-004-00
Download: ML18219C219 (7)

LER-2078-004, Re Higher Steps of Rod P-8

Event date:
Report date:
3162078004R00 - NRC Website

text

Wmerloen Eteomo IPowe QSE8 D

NA 8r MICHIGANPOKER COMPANY DONALD C. COOK NUCLEAR PLANT P.O. Box 458, Bridgman, Michigan 49106 January 30, 1978 Mr. J,G.

Keppler, Regional Director Office of Inspection and Enforcement United States Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, IL 60137 Dear Mr. Keppler:

Operating License DPR-58 Docket No. 50-315 Pursuant to the requirements of Appendix A Technical Specifications and the United States Nuclear Regulatory Corinission Regulatory Guide 1.16, Revision 4, Section 2.b, the following report is submitted:

RO 50-315/78-04.

Sincerely, D.V. Shaller Plant Manager

/bab cc:

J.E.

Dolan R.W. Jurgensen

'.E.

Lien R. Kilburn R.J.

Vollen BPI K.R. Baker RO:III R.C. Callen MPSC P.W. Steketee, Esq.

R. Walsh, Esq.

G. Charnoff, Esq.

G ~

Olson J.M. Hennigan PNSRC J.F. Stietzel Dir., IE (30 copies)

Dir., MIPC (3 copies)

'1 0

1I,

PJ l-or'm No. 4494

'5 LICENSEE EVENT REPORT+

CONTROL BLOCK:

UCENSEE NAME LICENSE NUMBER Qpg M

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1 0

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89 14 15 UCENSE TYPE EVENT TYPE 0

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REPORT REPORT CATEGORY TYPE SOURCE DOCKET NUMBER [OD1IooN'T~

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8 57 58 59 60 61

,68 EVENT DATE REPORT DATE 1

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EVENT DESCRIPTION

PN 12-28-77, IT WAS DISCOVERED THAT ON 12-5-77 THE INDICATED POSITION OF ROD P-8 RO-050-315 78- 04 [oa~]

7 8 9 Jog 7

8 9 PRME SYSTEM

CAUSE

COMPONENT CODE CODE COMPONENT CODE SUPPLER [oazj~IE E

I N

ST R

0 N

7 8 9 10 11 12 17:

43 44 47 48 CAUSE DESCRIPTION [gg~]

TECHNICIAN INVESTIGATION REVEALED THE CAUSE TO BE EXCESSIVE DRIFT IN THE SIGNAL W

1 2

9 N

7 8 9

~gg CONDITIONING MODULE (MODEL jIE2-786).

THE SPAN ADJUSTMENT OF THE MODULE WAS 7

8 9,

~03 WAS APPROXIMATELY 1 4 STEPS HIGHER THAN THE INDICATED BANK POSITION.

TH IS EXCEEDS 7

8 9 [onaj I THE 12 STEP LIMIT IMPOSED BY APPENDIX A TECHNICAL SPECIPI 789'0 80 80 80 80 80 7

8 9 tiio)

ADJUSTED FOR THE CORRECT VALUE AND THE INDICATOR WAS SEE SUPPLEMENT 80 7

8 7

8 7

8 7

8 7

8 7

8 9

FACE.ITY STATUS 95 POWER OTHER STATUS E

~10 0

N A 9

10 12 13 FORM OF ACTIVITY COATENT RELEASEO OF RELEASE AMOUNT OF ACTIVITY Z

Z N A 9

10 11 PERSONNEL EXPOSURES 9

11

.12 13 PERSONNEL INJURIES NUMBER

DESCRIPTION

~00 0

N A 9

11 12 OFFSITE CONSEQUENCES N/A 9

LOSS OR DAMAGE TO FACILITY TYPE

DESCRIPTION

~Z N/A 9

10 PUBLICITY N/A 9

ADDITIONAL FACTORS N/A METHOD OF DISCOVERY A

N A 44 45 46 N A 44 45 DISCOVERY DESCRIPTION LOCATION OF RELEASE 80 80 80 80 80 80 80 80 7

89

~19 N/A 7

89 T.

P, BEILMAN PHDNE (61 6) 465-5901 (368) 80 80 GpO eel.eeT

0

'1

SUPPLEMENT TO REPORTABLE OCCURRENCE RO-050-315 78-OO SUPPLEMENT TO CAUSE DESCRIPTION SATISFACTORILY RETURNED TO SERVICE WITHIN THE HOUR.

NO FURTHER PROBLEMS ON THIS CHANNEL HAVE AS YET BEEN ENCOUNTERED.

REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

DISTRIBUTION FOR INCOMING MATERIAL 50-315 REC: 'KEPPLER J G

NRC ORG'HALLER D V

IN 5 MI PWR DOCDATE: 01/30/78 DATE RCVD: 02/06/78 DOCTYPE:

LETTER NOTARIZED:

NO COPIES RECEIVED

SUBJECT:

LTR 1

ENCL 1

LICENSEE EVENT REPORT 78-04 ON 12l5/77 CONCERNING DISCOVERY THAT THE INDICATED POSITION OF ROD P-8 WAS APPROXIMATELY 14 STEPS HIGHER THAN THE INDICATED BANK POSITION.

PLANT NAME: COOK UNIT 1

REVIEWER INITIAL:

XEF DISTRIBUTOR INITIAL:

+<~++++44~HHF+++++4 DISTRIBUTION OF THIS MATERIAL IS AS FOLLOWS INCIDENT REPORTS (DISTRIBUTION CODE A002)

FOR ACTION:

INTERNAL:

EXTERNAL:

BRANCH F DAVIS>>W/4 ENCL REG FILE++W/ENCL PAR='ENG SCHROEDER/IPPOL ITO++W/ENCL NOVAK/CHECK44W/ENCL KNIGHT++W/ENCL HANAUER+4W/ENCL EISENHUT+4W/ENCL SHAO44W/ENCI KREGER/J.

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JOSEPH)

MI++W/ENCL '

IC~~~W/ENCL NS IC++W/ENCL ACRS CAT B++W/16 ENCL NRC PDR++W/ENCL MIPC++W/3 ENCL HOUSTON++W/ENCL GRIMES++W/ENCL BUTLER++W/ENCL TEDESCO+4W/ENCL BAER+>W/ENCL VOLLMER/BUNCH++W/ENCL ROSA++W/ENCL DISTRIBUTION:

LTR 45 ENCL 45 SIZE:

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