05000315/LER-1980-018-03, /03L-0:on 800806,during post-refueling Startup,Rcs Average Temp Fell Below 541 F Contrary to Tech Spec 3.1.1.5. Caused by Unbalance Between Turbine Load & Reactor Power. Turbine Load Reduced

/03L-0:on 800806,during post-refueling Startup,Rcs Average Temp Fell Below 541 F Contrary to Tech Spec 3.1.1.5. Caused by Unbalance Between Turbine Load & Reactor Power. Turbine Load Reduced

ML17331A433
Person / Time
Site:	Cook
Issue date:	09/05/1980
From:	Chadwell H INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML17331A434	List: 05000315/LER-1980-018, Forwards LER 80-018/03L-0 05000315/LER-1980-018-03, /03L-0:on 800806,during post-refueling Startup,Rcs Average Temp Fell Below 541 F Contrary to Tech Spec 3.1.1.5. Caused by Unbalance Between Turbine Load & Reactor Power. Turbine Load Reduced
References
LER-80-018-03L-01, LER-80-18-3L-1, NUDOCS 8009110348
Download: ML17331A433 (4)

LER-1980-018, /03L-0:on 800806,during post-refueling Startup,Rcs Average Temp Fell Below 541 F Contrary to Tech Spec 3.1.1.5. Caused by Unbalance Between Turbine Load & Reactor Power. Turbine Load Reduced

Event date:
Report date:
3151980018R03 - NRC Website

text

NRC FORM 366 I7.77)

LICENSEE EVENT REPORT

~ a

~01 7

8 CON'T

~s1 7

8

~03

~O4

~OB

~06

~07 CONTROL BLOCK:

I M

I D

C C

1Q2 9

LICENSEE'ODE 14 Q)

(PLEASE PRINT OR TYPE ALLREQUIRED INFORMATION) 6 0

0' 0

0 0

0 0

,4>>

I IQ4~Ps 25 26 LICENSE TYPE 30 57 CAT 58 Q

LICENSE NUMBER THE TEt1PERATURE WAS RETURNED ABOVE 541 DEGREES lt(ITHIN TWO MINUTES.

IN THE SECOND CASE THE TEMPERATURE WAS ABOVE 541 DEGREES WITHIN FOUR MINUTES.

THERE WERE NO PROBABLE CONSE(UENCES.

PREVIOUS OCCURRENCES INCLUDE LER NOS. 50-316/78-092 AND

.50-316/78-095.

~LQB 0

5 0

0 0

3 Q7 0

8 0

6 8

0 QB 0

9 0

5 8

0 QB 60 61 DOCKET NUMBER 68 69 FVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES ~10 ON TWO OCCASIONS DURING UNIT STARTS AFTER REFUELING THE RCS AVERAGE TEMPERATURE DROPPED BELOW 541 DEGREES.

THIS IS CONTRARY TO T.S. 3.1.1.5.

IN THE FIRST CASE

~OB 80 7

8 7

8 SYSTEM

CAUSE

CAUSE COMP.

VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE [OO~)

~CB Qss X

pn

~ZQ>>

Z Z

Z Z

Z Z

Q>4 Uzpls UZ Q)s 9

10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION LERJRO EVENT YEAR REPORT NO.

CODE TYPE

~ NO.

Q>>

<<sssT

~80 U

~01 8

U>

~03 UL U

UO 21 22 23 24 26 27 28 29 30 31 32 ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRDQ PRIME COMP.

COMPONENT TAKEN ACTION ON PLANT METHOD HOURS Q22 SUBMITTED FORM SUB.

SUPPLIER MANUFACTURER UNQ1s UZp>>

gpss Uzps' 0

0 0

Y Qss UNpss UZQss Z

9 9

9 Qss 33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 27 o

IN EACH CASE THE EVENT TOOK PLACE WITHIN A FEW MINUTES AFTER THE GENERATOR HAD BEEN PARALLELED TO THE GRID.

AT THIS TIME MOST CONTROLS ARE IN MANUAL AND THE CHANGES IN TAVE OCCURRED AS A RESULT OF THE BLOCK OF LOAD THAT WAS ASSUMED IMMEDIATELY FOLLOWING 3

PARALLEL.

IN BOTH CASES THE UNBALANCE BETWEEN TURBINE LOAD AND REACTOR POWER CAUSED TAVE TO DROP.

TURBINE LOAD WAS REDUCED TO HALT THE TEMPERATURE DROP BUT NOT BEFORE CCI Q~p Ip ACTIVITY CONTENT RELEASED OF RELEASE AMOUNTOF ACTIVITYQ QtZ UZps Z

Q34 NA 7

8 9

10 11 45 PERSONNEL EXPOSURES NUMBER TYPE

DESCRIPTION

~00 0

Qs7 UZQss NA 7

8 9

11 12 13 PERSONNEL INJURIES LOCATION OF RELEASE Q NA 44 7

8 9

FACILITY

~3O METHOD OF STATUS BB POWER OTHER STATUS 0 DISCOVERY DISCOVERY DESCRIPTION Q32 1

5 C

26 0

2 0

29 NA A

31 OPERATOR OBSERVATION 80 80 80 80 7

8 7

8 9

10 P U8 LICITY ISSUED DESCRIPTION~

~NQ 9

10 O

I 8

NAME OF PREPARER 9

11 12 LOSS OF OR DAMAGETO FACILITY 43 TYPE

DESCRIPTION

Z P4~

NA H.

M.

CHADWELL 80 FPOQ(ld 5 flicUSE ONLY a

(616) 465-5901 EXT 13@

i

~

1

CAUSE DESCRIPTION AND CORRECTIVE ACTIONSIT HAD,FALLEN BELOW THE MINIMUM OF 541 DEGREES.

ALL LICENSED OPERATORS WILL BE REQUIRED TO REVIEW THESE EVENTS TO.MAKE THEM AWARE OF THE POTENTIAL FOR THIS

~

TYPE OF OCCURRENCE AND THE ACTION TO TAKE TO PREVENT IT.

NO FURTHER ACTION IS PLANNED.

e