05000318/LER-1980-040-03, /03L-0:on 800901,control Element Assembly 34 Dropped to Bottom of Core.Electrical Test Disclosed No Cause.Review of Rod Drop Occurrences Underway

/03L-0:on 800901,control Element Assembly 34 Dropped to Bottom of Core.Electrical Test Disclosed No Cause.Review of Rod Drop Occurrences Underway

ML19338E894
Person / Time
Site:	Calvert Cliffs
Issue date:	10/01/1980
From:	Rizzo P, Wenderlich R BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19338E889	List: 05000318/LER-1980-040, Forwards LER 80-040/03L-0 05000318/LER-1980-040-03, /03L-0:on 800901,control Element Assembly 34 Dropped to Bottom of Core.Electrical Test Disclosed No Cause.Review of Rod Drop Occurrences Underway
References
LER-80-040-03L-01, LER-80-40-3L-1, NUDOCS 8010060273
Download: ML19338E894 (1)

LER-1980-040, /03L-0:on 800901,control Element Assembly 34 Dropped to Bottom of Core.Electrical Test Disclosed No Cause.Review of Rod Drop Occurrences Underway

Event date:
Report date:
3181980040R03 - NRC Website

text

_

G.

i

. LICENSEE EVENT REPORT j.

CONTROL BLOCK: l 1

l l

l l lh ULEASE PRINT 03 TYPE ALL REQUIRED INF07.MATIO4!

l 6

lo lil l MI of cl c l nl 21@l 0101 -l 0101 o l o f a l-lo l o l@l411111111 l@l I

KA 7

8 9 LICENSEE CODE 14 IS LICENSE NUMBER 25 28 LICENSE TYPE JG

$7 CAT 58 CON'T A

EUE lLl@l 015101010131118)@l01910111810l@l11010111810 l@

i 8

$0 81 DOCKET NUM8ER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h 10121 l At aooroximately 1504. while returnino to full oower. received indication i

r5T37 I that CEA No. 34 had dropped to the bottom of the core. Commenced oower-1 I O 14 i i decrease to less than 70% pursuant to T.S. 3.1.3.1.

Recovered CEA and with-I

i O i s i i drew fully by 1610. All other CEA's were operable during this event. LER I

i iO le i I 80-12 (U-1) describes a similar event.

I l0 l 7 } l l

IO la i l I

80 7

8 g E

CODE S' 8C E COMPONENT CODE St.,8C QE SU 10191 i R l B l@ l X l@ l X l@ [X,, IX lX lX IX lX l@ l Z l@ - [.,Z.J @

7 8

9 10 11 12 13 18 19 20 SEQUENTI AL OCCURRENCE REPORT R EVISION LE RiR EVENTYEAR R EPORT NO.

CODE' TYPE N O.

O ag"O 18 io I l-l 1014101 y

l Ol 31 lL l

[-]

101 s

_ 21 22 23 24 26 27 28 29 30 31 J2 Kf AC O

- O P NT ME D

HOURS 8 i FC 8.

SUPPL ER MA UPAC RER lXl@lXl@

[ B_j@

[Ij@

10101011I

[!Lj@

l N l@

l NI@

l Z l9 19 19 @

33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h I i i O I I An electrical test of the CEA durinn its oneration disclosed nn cause for the i

L1_L.J l event.

A review of rod dron occurrences is oresantly haing ennanetad by I

ii2 I members of olant staff. The coal of this review is to detect similarities I

li 6 a l l amona such occurrences which will aid in trouble'shootino efforts.

I 11 141 I l

80 7

8 9 ST U

% POWER OTHER STATUS IS Y

DISCOVERY DESCRIPTION Ii I 5 l LEJ@ lo I 9 I7 l@i NA l

[a j@l Ocerator Observation I

1 0

46 80

',$nviTv CO0 TENT RELEASED OP RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE NA I

l flA l

[1,,,.[6.] LIJ @ LIJ@l l

7 8 2 to 11 44 45 80 PERSONNEL EXPOSURES NUveER TYPE CESCRIPTION tj_Lu l ol o l o l@LIJ@l NA l

PERSONNEt iN;UWiES oESCRirTiON@

NuveER lolol01@l NA

_]

i a

,7 8 9 11 12 80 T PE DESCR PT ON l,,.Zj@l NA I

1 9 7

8 8 10 80 tuojt_u.[81 80100ac 2_7 %

i i i iiiiiiiiiili ISSUE DESCRtPTION Na

[

68 69 80 ;

7 8,S 10 (3011 269-4776 E,

NAME OF PREPARER R.!

Wenderlich/P. Rizzo PHONE:

~