05000315/LER-1979-040, Forwards LER 79-040/03L-0

Forwards LER 79-040/03L-0

ML17317B494
Person / Time
Site:	Cook
Issue date:	08/22/1979
From:	Shaller D INDIANA MICHIGAN POWER CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17317B495	List: 05000315/LER-1979-040, Forwards LER 79-040/03L-0 05000315/LER-1979-040-03, /03L-0 on 790726:during Moderator Coefficient Test,Reactor Power Decreased from 79% to 58% in 43 Minutes. Iodine Isotopic Analysis Not Performed in Required Time. Caused by Poor Communication Between Operator & Supervisor
References
NUDOCS 7908290423
Download: ML17317B494 (4)

LER-1979-040, Forwards LER 79-040/03L-0

Event date:
Report date:
3151979040R00 - NRC Website

text

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~ q DONALD C. COOK NUCLEAR PLANT P.O. Box 458, Bridgman, Michigan 49106 August 22, 1979 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 h

Operating License DPR-58 Docket No. 50-315

Dear Mr. Keppler:

Pursuant to the requirements of the Appendix A Technical Specifications the following report/s aresubmitted:

RO 79-040/03L-O.

Sincerely, D.V. Shaller Plant Manager

/bab cc:

J.ED Dolan R.W. Jurgensen R.F. Kroeger R. Kilburn R.J. Vollen BPI R.E.

Masse RO:III R.C. Callen MPSC P.W. Steketee, Esq.

R. Walsh; Esq.

G. Charnoff, Esq.

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

Dir., MIPC (3 copies)

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NRC FORM 4366 U. S. NUCLEAR REGULATORY COMMISSION I7.7,7) s LICENSEE EVENT REPORT

'42ONTROL B LOCK:

Q1

{PLEASE PRINT OR TYPE ALLREQUIRED INFORMATION) 1 6

M I D

C C

Ips 0

0 0

0 0

0 0

0 0

0 ops 4

1 1 11 Ps~p 7

8 9

LICENSEE CODE 14 15 I.ICENSE NUMBER 25 26 LICENSE TYPE 30 57 CAT 58 CON'T O

1

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2 2

7 9

Qe SOURCE 7

8 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES ~10

~s s

DURING MODERATOR COEFFICIENT TESTING, STARTING AT 0022

HOURS, REACTOR POWER DECREASED FROM 79 PERCENT TO 58 PERCENT'N 43 MINUTES.

THE

~O3 SURVEILLANCE REQUIREMENT OF T. S.

TABLE 4. 4 4 ITEM 4. b (ISOTOP IC ANALYSIS FOR IODINE)

WAS NOT PERFORMED WXTHIN THE REQUIRED TIME s

LIMITS.

~O7

~os 7

8 9

80 7

8 BY OPERATIONS PERSONNEL.

THE EQUXPMENT OPERATOR AND UNIT SUPERVISOR SYSTEM

CAUSE

CAUSE COMP.

VALVE CODE CODE SUBCODE COMPONENT CODE SUBQODE SUlPODE LXXXIQil A

Qls

~A Qls Ql4 ~ Q1s ~ Qis 9

10 11 12 1

13 18 19 20 SEQUENTIAL OCCURRENCE REPORT

~

REVISION 21 22 23 24" 26 27 28 29 30 31 32 ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRD<

PRIME COMP.

COMPONENT TAKEN ACTION ON PLANT METHOD HOURS O22

'UBMITTED FORM SUB.

SUPPLIER MANUFACTURER

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0 0

~F Qss

~N Q24 gJ Qss Qss 33 34 35 36 37 40 41 42 s

43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS A27 CHEMICAL SECTXON PERSONNEL 'WERE NOT NOTIFXED OF THE POWER DECREASE 1

0 BOTH THOUGHT THE OTHER HAD NOTIFIED CHEMICAL PERSONNEL OF THE POWER INCREASE IN IODINE ACTIVITIES..

SEE SUPPLEMENT.

4 7

8 9

FACILITY STATUS

% POWER OTHER STATUS Q 5

8 NA 80 METHOD OF DISCOVERY DISCOVERY DESCRIPTION Q32 Q31 KX3TXNE INSPECTION 45 46 s

~F Qss ~0Qss 7

8 9

10 12 13 44 ACTIVITY, CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITYQ 6

~Z Q33

~ZQ34 NA 7

8 9

10 44 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION A3

~00 0

Q37 Z

Qss 7

8 9

11 12 13 PERSONNEL INJURIES NUMBER DESCRIPTIONQ41 s

~oo o Qs NA.

80 LOCATION OF RELEASE Q36 80 45 80 80 9

11 12 LOSS OF OR DAMAGETO FACILITYQ43 TYPE

DESCRIPTION

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10 PUBLICITY ISSUED DESCRIPTION~

~NQ44 9

10 7

8 80 NRC USE ONLY 80 o 0

7 8

O 68 69616-465-5901 7

8 J. L. Rischling PHONE:

NAME OF PREPARER CHANGE.

A ROUTINE SAMPLE TAKEN AT 0900 XNDICATED ONLY A VERY SLIGHT s

SUPPLEMENT TO. LER ¹79-040/03L-0 I

SUPPLEMENT TO

CAUSE

DESCRIPTION ALTHOUGH AN IODINE SPIKE COULD HAVE OCCURRED AFTER THE TRANSIENT IT WOULD HAVE!~TO HAVE BEEN OF VERY MINUTE PROPORTIONS, AS THE IODINE ACTIVITY WAS AT NORMAL VALUES WITHIN 8 HOURS.

COMPARING THIS DATA TO PREVIOUSLY GATHERED DATA ON IODINE SPIKES FOLLOWING POWER TRANSIENTS, IT IS VERY UNLIKELY THAT AN IODINE SPIKE GREATER THAN 1.0 ~c/gm COULD HAVE OCCURRED IN THIS SHORT A TIME PERIOD.

TO PREVENT RECURRENCE THE IMPORTANCE OF THESE SAMPLES AFTER LOAD CHANGES WAS STRESSED TO THE OPERATORS INVOLVED AND THEY WERE INSTRUCTED TO COMMUNICATE WITH EACH OTHER ON FURTHER LOAD CHANGES.

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