ML18348A279

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License Event Reports 1976-029-00, 1976-030-00, & 1976-031-00 Re Control Rod Drives
ML18348A279
Person / Time
Site: Palisades Entergy icon.png
Issue date: 09/21/1976
From: Bixel D
Consumers Power Co
To: James Keppler
NRC/RGN-III
References
LER 1976-029-00, LER 1976-030-00, LER 1976-031-00
Download: ML18348A279 (4)
v • d • e


Text

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consumers

  • Power company September 21, 1976 Mr James G Keppler Office of Inspection & Enforcement Region III US Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137 DOCKET 50-255, LICENSE DPR PALISADEq PLANT, CONTROL ROD DRIVES -

ER-76-29, -30 AND -31 Attached are three Licensee Event Reports which relate to our Palisades Plant.

Normal plant reporting requirements require these to be reported in thirty days; however, the Palisades special Technical Specifications intended that these events be reported under an old specification requirement which is equiva-lent to the present Prompt Notification requirements. In the future, it is our intention to report these events as required under the present Prompt Notifica-tion requirements.

David A Bixel Assistant Nuclear Licensing Administrator SEP z3 '1976

r-9CENSEE EVENT REPORT Palisades

  • CONTROL BLOCK: L 1-~-*

J__j' I_ 6I_ (PE..l':..AVZE Pmro*rr f...!J. Pl!~GUffif.0 !!'<'IFOl\il':lli~l'&4:rn.lJ UC ENS!: EVENT LICENSE NUMBER TYPE TYPE L9 I o1-* lo I o I o I oI ol -1 o I o25I L4 I 1 I 1 I 1JJ:J l_Q_J2J 15 26 30 31 32 REPORT REPORT TYPE. SOURCE DOCKl;T NUMBER EVENT DATE REPORT DATE

@12) CONlj..____.___.. L1'59...I L1J W-2..L o1-1 o I 2 I s I sJ 1018121717161 lol9l2l1irl6I 7 8 57 58 60 ~ 68 69 74 75 80 EVENT DESCRIPTION

@I?] !While maintaining Rx critical at low power. control rod motion was necessary whicLJ 7 8 9 80

@:@.! t:esult~. in two occasions when rod No 37 was misaligned by up to -11. 2 inches. Each j 7 8 9 80

@Bj I oc_:asion lasted for less than one minute. (ER-76~029)

~~~-,.,...--~~-,.,...*-*~*~~-J 7 B 9 7~8 9L~------------------~--------~ so 7

lfilfil8 9L.~--~---------------------------------------------~~--------__J PR1ME 80 SYSTEM CAUSE COMPONENT COMPONENT CODE CODE COMPDr~ENT CODE SUPPLIER MANUFACTURER VIOLATION

@0 I RIB I ~ IC!OINIRIOIDJ l!J Ix I 9 I 9 I 91 Ll!..J 7 8 9 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION pjaj !Rod No 37 failed to move with its group due to problems with the motor/brake assem- I 7 B 9 80 faJ91 1bly. The motor/brake assembly was replaced and brake inspection procedures are _J

. 7 8 9 80 I

r1f~ 13ei?g developed. The Combustion Engineering motor/brake assembly (see Line 18)

B 8 80 FACILITY METHOD OF STATUS  % POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION

@TI ~ lo! ol ol NA ~ NA 7 8 9 10 12 13 44 45 46 80 FORM OF ACTIVITY CONTENT 7

rn 8 RELEASED

~

9 OF RELEASE L!J 10 AMOUNT OF ACTIVITY

. _ _ I_ _ _ _

11 N_A_ __ ,

44 45 LOCATION OF RELEASE NA 60 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION 7

ITEiB 9I 01 °I 0 I

11

~

12 13 NA 80 PERS"ONNEL INJURIES NUMBER DESCRIPTION 7

EEi8 9l.QJ~J11 12L NA 80 J

. PROBABLE CONSEQUENCES El§ !None.

7 8 9 80 LOSS OR DAMAGE TO FACILITY EEJ.8 9 7

w TYPE 10 DESC.RIPTION NA 80 PUBLICITY

[!IZ}s 7

NA s"-~~~~~~~~~~~-"-~~~~~--'-~~~~~~~~~~~~~~~~~~~~~~~-s-'o ADDITIONAL FACTORS

. . I piece number J.s CND-SD-2108. The assembly is manufactured by IMC Magnetics Corp,

. 8 9 80 IT§ f Eastern Di vision, 570 Main Street, Westbury, NY 11591. _ _ _ _J 7 8 9 80.

~:ENSEE EVENT REPORT Palisades

  • ~ONTROL BLOCK: L_l__l_,__,_~__.J_J [PJ!LE!:t9E P~ll'JT AU.. ~~~:imum lN!FO~l1i'H4-TiON) 1 6 LICENSEE LICENSE EVENT

~JAME LICENSE NUMBER TYPE TYPE

  • . ~ I M1 I l Pl A_l_L L!J W~::J o ! o I o I o i o 1-1 o I oJ [4111111111 I0 1 1I 7 8 9 14 15 25 26 30 31 32 REPORT REPORT TYPE. SOURCE UOCKl;T NUMBER EVENT DATE REPORT DATE
  • @ill cowr Ll_J 7 8 57 56 w59 L&J 60 Lo I 5 I o 1--1 o ITT I 2 I 5 1sJ 68

~1617161 69 74

!2-Ji_l 2 l 1 I 7 I 6J 75 BO EVEtJT DESCRIPTION m:@ L~RD Jfo 39 failed to withdraw during power escalatidn. A rod drop test was performed!

7 B 9 80

@I3] I satisfactorily but attempts to wi thdra.w the rod were unsuccessful. Resultant opera-I 7 8 9 80

{£0 L._t_i_o_n_(_b_e_low 50% power) was within the Technical Specificatic*as (3.10.3 and 3.10.4). I 7 8 9 80

~ (ER-76-30) I 7 B 9 80 lQJsl L_ *------------------*---- I 7 8 9 PRME 80 SYSTEM CAUSE COMPON!:NT COMPONENT CODE CODE COMP01JENT CODE S'.JPPUER MANUFACTURER VIOLATION 7

@El 8 9

!RIB 10 I [J;;J 11 Le I oI. N ~.ltl.£..117 12

~

43 LU.9 J 919 I 44 47

~

48 CAUSE DESCRIPTION

~ l The most probable cause of the failure. is considered to__b_e_~sociated. with the __J 7 B 9 80

[oJ91 I motor /brake assembly. The motor/brake assembly was replaced and::th~_:RDM opera~

7 8 9 ' 80 l sa;~isfactc;,E~ly. _ Br~:ke ins,pection procedures are being developed. ' (see Line J.8 r .L

  • 8 g F~CiLrTY STATUS  % POWER OTHER STATUS METHOD OF DISCOVERY UISCOVERY . DESCRIPTION 80 EE]

7 B

[_gJ 9

I 0 I 21 5 I 10 12 13 NA 44 w45 46 NA 80 FORM OF ACTIVITY CONTENT OF RELEASE LOCATION OF RELEASE rn REL.EASED AMOUNT OF ACTIVITY 7 8

!zJ 9

W10 L

11 NA 44 45 rIA _J 80 PERSO!-JNEL EXPOSURES NUMBER TYPE OC:SCRl?TION

[ill] l-9 ! o I QJ11 l1iJ NA J 7 B 9 12 13 80 PERS'ONNEL INJURIES NUMBER DESCR:PTION

~ I 0I 0 I0 j L NA 7 B 9 11 12 80 PROBABLE CONSEQUENCES .

[@! I None. This m.ode of operation is permitted by the Technical Specifications.

7 8 9 80 LOSS OR DAMAGE TO FACILITY 7

~-8 TYPE Lz.J 10L 9

DESCRIPTION NA. ____ ._________.

BO PUBL!CITY 7

EE! 8 9 LN_A~~~~~--~~~----~~~~~~~~~~~~~---~~----~~~~

80 ADDITIONAL 1'ACTORS.

~ l The assembly is manufactured by IMC Magnetics Corp. The Combustion Engineering JBO

, 8 9 E@ I asse1ribly piece number is CND-SD-2iq~:~

7 89 * .. 80

~Ef\!SEE EVENT fiEPORT Palisades l

, QONTROL BLOCK: L.. l--'---'L . I. . __.__..__IJ [Pi.EA9~ Sl'R!ii:lT AU. i-'aEflU&iH~IJ li\:l!FU!illl!lJi.i'1Cn!J 1 6

~ Ui.1 LICENSEE LICENSE EVENT NAME LICENSE NUMBER TYPE TYPE 1 I I p I A I L I J. I I o I o 1-1 o I o l oI o l o.J.=J~...9-J 11~111111111 l 0 11 J 7 B 9 14 15 25 26 30 31 32 REPORT REPORT TYPE. SOURCE DOCKE;T NUMBER EVENT DATE llEPORT DATE 7

@TI] CDN'T L_J_J 8 57 58 L!_J 59 UJ 60 LQ_J 5 I o 1-1 o L?J....uJ_J 6'1 68 10 l9lll 31716J 69 74 .

IOl9l~lj7L6l 75 80 EVENT DESCRIPTION llirfil:,tp~;_e _to seal leakage prob1.ems, CRDM No 13 is being considered inoperable. ~~-_J 7 8 9 80

@~f @..et ion_j._f2__!'._?.ken t~ n:rohibi t additional drive movement which might lead to increas~

7 B 9 80

@@1 !seal leakage. The drive seal will be replaced at the next opportunity consistent J 7 8 g 80

~ twith plant operating requirements. (ER-76-31)

  • __*_J 7 8 9 80 7 8 9 PRr:\.IE 80 SYSTEM CAUSE COMPONENT COMPONENT CODE CODE COMPONENT CODE SUPPLIER MANUFACTURER ViDLATION 7

@El LILW 8 9 10

[.p_J 11 Le I o I N IR I o I D I 12 17 ll!J 43 I c I 4 I 9 Io I 44 47 L!_J 48 CAUSE DESCRiPTION

@18] LThe cause of this event is begim1in_g_§~~l failure on CRDM No 13. The s~al is made J 7 8 9 80

@li3J Lb~ Garlock and is a Mec:hanipak Type 74BH seal (l-1/4" shaft), seal Code 74000-9004 ;j 7 8 9 80

..--@] !Ref Dwg B2975l. ~~~~~--~~~~~~~~~~~~~---'---'!.

8 9 80

  • FACILITY METHOD OF

% POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION w

STATUS 7

EEi8 9 I 0 I 9 I 9 I .____

10 12 13

__;N;,:.:.;;A_._J 44 w45 46 NA 80 FORM OF ACTIVITY CONTENT 7

rn 8 RELEASED 9

~

OF RELEASE

~

10 11 AMOUNT OF ACTIVITY l._____N_A_ _ ___.

44 45 LOCATION OF RELEASE NA 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION EE1 Loj__g_l_.QJ11 UJ 7 8 9 NA 12 13 80 PEAS"ONNEL INJURIES NUMBER OESCRIPrJON E@l l 0 I 0 I 0 I NA J 7 8 9 11 12 80

  • . PROBABLE . CONSEQUENCES

~ l_Eone. The drive remains capable of' performing its safety function.

7 8 9 80 LOSS OR DAMAGE TO FACILITY 7

fili]

8 9 w

TYPE 10 DESCRIPTION NA 80 PUBLICITY 7

E.0El 9LNA_~~~.~~~~~~~~~~~~-~~~~~~~~-'-~* 80 ADiJITIONAL FACTORS 0 LEA__ _ _ _ _ _ _ _ _ _ ___._,  ;":".;;,

_J

' 8 8 80 BO

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