ML19210A189
| ML19210A189 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 10/31/1975 |
| From: | Arnold R METROPOLITAN EDISON CO. |
| To: | |
| References | |
| GQL-1662, NUDOCS 7910240910 | |
| Download: ML19210A189 (4) | |
Text
+
RIBUTION FOR PART 50 DOCK ATERIAL NRf -
(TEMPORARY FORM)
CONTROL NO: I 7 le 37-
- l LE: I?! CIDE!?T REPORT FI --
FROM: netropolitan Edison Co DATE OF DOC DATE REC'D LT WX RPT OTHER g Pa t0-31-75 11-3-75 XXX gc n
TO:
ORIG CC OTHER SENT AEC PDR XX lit one signed SENT LOCAL PDR CLASS UNCLASS PROPINFO INPUT NO CYS REC'D DOCKET NO:
XXXXX 1
30-289 DESCRIPTION:
ENCLOSURES:
Ltr regorting abnormal Occurrence #72-38 on lu-21-72 concerning inadequacy in the laplemen-c 64 tion of a Gentrol, Rod Program Vertiication...
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PLANT N AME:
taree Mile islano #1 FOR ACTION /INFORMATION 11-0-75 ehf BUTLER (L)
SCHWENCER (L) ZIEMANN (L)
REGAN (E)'7&d (3)
W/ Copies W/ Copies W/ Copies W/ Copics CLAhK (L)
STOLZ (L)
DICKER (E)
LE AR (L)
W/ Cooies W/ Copies W/ Cocies W/ Copies PAR R (L)
VASSALLO (L)
KNIGHTON (E)
SPELS W/ Copies W/ Copies W/ Copics W/ Copics KNIEL (L)
PURPLE (L)
YOUNGBLOOD (E)
W/ Copics W/ Copies W/ Copics W/ Copies INTERNAL DISTRIBUTION Em " ' '_
TECH REVIEW DENTON llc ASST A/T IND.
NRC POR pSCHROEDER 9 RIMES R. DIGGS (L)
BRAITMAN
}OGC, ROOM P 506A f
- MACCARY GAMMILL H. GE ARIN (L)
SALTZMAN GOSSICK/ST AF F KNIGHT KASTNER E. GOU LBOURNE (L)
MELTZ CASE PAWLICKi BALLARD P. KREUTZER (E) f GIAMBUSSO SHAO SPANG LE R J. LEE (L)
PLANS BOYD
MCDONALD MOORE (L)
- HOUSTON ENVIRO S. REED (E)
CHAPMAN
- f DEYOUNG (L)
,.NOVAK MULLER M. SERVICE (L)
DUBE (Ltr)
SKOVHOLT (L)
ROSS DICKER S. SHEPPARD (L)
E. COUPE GOLLER (L) (Ltr) lPPOLITO KNIGHTON M. SLATER (E)
PETERSON f
P. CO L LI N S
/TEDESCO YOUNGBLOOD H. SMITH (L)
HARTFIELD (2)
DENISE J. CCLLINS REGAN S. TEETS (L)
KLECKER REG OPR LAIN AS PROJECT LDR G. WILLI AMS (E)
EISENHUT
/I'll E & REGION (2)
BENAROYA V. WILSON (L)
- WIGGINTON f. '!L"C / P E (a,)
,VOLLMER H AR LESS R. INGRAM (L)
F. WILLla!S
.j STEELE M. DUNCAN M
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METROPOLITAN EDISON COMPANY PCGT CFFICE BOX 542 RE ADING, PENNSYLVANI A 19603 TELEPHCNFr245-029-3601
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Cetc ?cer 31, 1975 GQL 1662
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.\\A,i' re-Director of IIuclear Reacter Regulation
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U.S. :!uclear Regulatory Cc==ission Washingten, D.C.
20555
Dear Sir:
Dcchet :To. 50-289 Operating License Uc. CFR-50 In acccrdance with the Technical Specifications of cur Three Mile Island Nuclear Statica Unit 1 (T'4I-1), we are repcrting the folleving abncr al cccurrence.
(1)
Repcrt Number: A0 50-289/75-36 Y g'n~/s
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(2a) Report Date: October 31, 1975 pocxy g
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(2b) Occurrence Date: October 21, 1975 b
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- . 3 (3)
Facility: Three Mile Island Nuclear Station Unit 1 unh @' '* '
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L s (h)
Identification of Cccurrence:
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N mi hP
Title:
Inadequacy in the imple=entation cf a Centrol Red N
Fregra: Verificatien.
Type:
An abncr:al cccurrence as defined by the Technical Specifications, paragraph 1.8g, in that the surveillance requirements Of Technical Specificaticn h.7.2.1 vere not satisfied during a Centrol Rcd Progra 7erificatien.
(5)
Conditions Frier to Occurrence:
Fever: Cere:
89%
Ilec.: 773 :Ge EC Flcv: 138 x 10 lbs./nr.
EC Pressure: 2155 psig hh\\
RC Temp..
579 F FR".2 *.evel.
237" nc-rR c.,e:p.
opu :
MM2
J
_2_
(6)
Description of Cccurrence:
Cn Cctcber 21, 1975, during a Plant Cperation Eeview Cc==ittee review of the results of the Ccntrol Ecd Progrs= 7erification, it was fcund that the surveillance requirements cf Technical Specification L.T.2.1 were not catisfied. The surveillance was performed by =cving a group cf rods the required distance and verifying that the cceputer input for each red respended. The procedure requires that each rcd in the group shculd be =cved separately.
The Plant Cperation Review Ccnmittee concluded that the surveillance, as performed, verified _that the rods were in the correct grcup.
In addition, a visual inspection of each patch plug was perferred and assured that aneh red was trcterly connected within the groun..
(7)
Eesignation of Apparent Cause of Cccurrence:
The cause of this cccurrence has been determined to be personnel /
precedure in that the personnel invcived =isinterpreted the Centrol Red Progrs= lerification prccedure. Procedure inadequacy centributed to the cccurrence since the surveillance precedures do not conclusively state that each red must be =cved individually to assure a satisfactcry test.
(B)
Analysis of Cecurrence:
It has been determined that this cccurrence did not constitute a threat to the health and safety of the public in that; a.
The incorrect precedure used in the surveillance dida not result in any improper connecticn cf centrol rods and did not affect the ner=al cperation of the equipment involved and b..
if an incorrect red assignment within a grcup would have occurred, flux distribution during ncr=al operation vculd have not been affected since all rods within a group are =cved together.
(9)
Ccrrective Acticn:
In addition to i=nediate action described abcve, lcng ter= corrective acticns are as follows:
a.
The Surveillance Procedure vill be revised to clearly state that individual rod =cve=ent is a require =ent for the performance of the Centrol Ecd Frcgr1=
Verification.
b.
Cperations perscnnel vill be cautioned that strict cct-pliance with surveillance procedures is required.
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(10) 7ailure Cata: Not Applicable Similar Cccurrences: Ncne Sincerely, n
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. ' Ih R. C. Arnold Vice Dresident
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