ML19321B037

Part 21 Rept Re Defective GE Crimp Pins in Electrical Connectors.Cause Not Stated.Encl GE Rept States That QA Procedures Have Been Modified to Preclude Defective Crimping in Future

ML19321B037
Person / Time
Site:	Limerick
Issue date:	07/01/1980
From:	Kemper J PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:
References
REF-PT21-79-159-002 QUAL-2-10-2-(SD, NUDOCS 8007250152
Download: ML19321B037 (9)

Text

ATTACHED IS A PART 21 REPORT FROM IE I%IL UNIT - R00M 359 E/W .

AJA 3 PART 21 IDEIRIFICATION NO. 79-/C Sd 1 C 0'P Ai# R Vc4 E f L A .

DATE OF ETTER. Wf/

DOCKET [0. 520 - 3 n1 ' n - n'a DATE DISTRIBUTED / ?/A7 m ORIGIRALREPORT SUPPEENTARY ,y

-DISTRIBUTION:

REACTOR (R) 1 FUEL CYCE & SAFEGUARDS (S)

IE FIES IEIU ,

IE FIES AD/ROI (2) IE FIES AD/SG AD/RCI (2) AD/FFMSI AD/ROI REGIONS I,II,III,IV,V REGIONS I,II,III,IV,V REGIONSI,II,III,IV,V VB00R BR. R-IV VSODR BR. R-IV VBODR BR R-IV LDEB / IPA NG 5715 iPES / FCMS SS-395 - NRP/DJL AEOD fib 7602 LDEB / IPA NB 5715 g.ES / SG SS-881 NRR/DDE AE00 N G 7602 L0EB / IPA RG 5715 NRR/DSI CENTRAL FILES 016 AEOD MG 7602 '

NRR/ DST CENTRAL FIES ( CHROF0 CBUPAL FIES 016 NRR/ DOL PDR CBHPAL FIES (CHRON) lCSURALFIL13 016 LPDR C6HPAL FIES SS-395 CBERAL FIES (CHROFD TERA pga

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ACTION:

PRELIMINARY EVALUATION OF THE ATTACHED REPORT ItOICATES LEAD RESPONSIBILITY FOR FOLL0h'JP AS SH3NJ BELOW:

gZ NRR IOES OTHER SYROI SG FFMSI 8007250 /N 3 E 7/9/80

PHILADELPHIA ELECTRIC COM PANY 2301 M ARKET STREET P.O. BOX 8699 PHILADELPHI A. PA.19101 JOHN S. KEMPER

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JUL - 11980 Mr. Boyce Grier, Director Office of Inspection and Enforcement Region I United States Nuclear Regulatory Commission i

631 Park Avenue Ring of Prussia, PA 19406

Subject:

Significant Deficiency Report No. 14 Defective Crimps in Electrical Connectors I Limerick Generating Station, Units 1 and 2 NRC Construction Permit Nos. CPPR-106, 107 Attachments: a) Letter G. G. Sherwood (GECo) to R. H.

Engelken (USNRC) dated 9/28/79 b) Letter PE-2274, H. G. DeVoss (GECo) to R. A. Muflord (PECO) dated January 10, 1980 File: QUAL 2-10-2 (SDR #14)

Scar Mr. Grier:

The attachments have brought to our attention deficiencies in crimped pins associated with the General Electric Power Generation Control Complex (PGCC) being supplied for Limerick

, Generating Station (LGS). These deficiencies have been previously reported to the USNRC by General Electric under the provisions of 10CFR, Part 21 (See Attachment a).

The pin. crimp deficiencies associated with the-LGS PGCC were previously evaluated by PECO during April 1979 and, at that time were determined not to be reportable to the USNRC under either 10C FR5 0. 5 5 (e ) or 10CFR, Part 21. That evaluation was made, however, prior to the site inspections of delivered PGCC components at LGS.

The results of the site inspection are contained in attachment 2 and indicate the need for extensive reinspection and repair of crimped pins associated with LCS Unit 2. k'e now consider the subject deficiency to be a significant deficiency per 10CFR50.55(c) and are hereby notifying you as required.

l We believe.that the General Electric report submitted under

the provisions of 10CFR,.Part 21 provides the information required for 10CFR50.55(e) reporting. Therefore we anticipate that this letter will be our only report to you on this subject.

! We will, of course, assure that defective crimps discovered 4 in the LGS PGCC are corrected in accordance with instructions received-from General Electric.

T Sincerely l:

i ~

i j RJL/gra Copy to: Director of Inspection and Enforcement i

p p'Inited States Nuclear Regulatory Coccission 20555 Washington, D.C.

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2nt Office U. S. Ihc1cE oft.Insp@ection and Enforce::latory Ccqnission .

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SU3 JECT:' . REPORTABLE CORDITION C0"*ECTOR d PIN CRIRPING DEFECTS ON PAHEL IHSERT

. ... P853-72C l<:i.N .

This litt.o cdvise the 12C of a reportable conditica pr 100FR Pcrt 21.

It was. reported to Mr. Gobby Fculkenberry of your office by t' alter H.

D' Ardenne. Manager. Safety Evaluation Progrens on Septc6sr 25,1979.

The defect is in pin cricps in Panel H12-PS53 insert 72C. Tha dafect i was jtt,,e4 to be seportcblo ca Septe:bar 24, 1979. Attactgd is a rcpprgqf,thedeft.ct. :rj ~ (

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i General Electric (GE) es the cupplier of the subject ir.:cWEi11 infom the utilitics effected e.nd cdvit.a th:c of GI's inspectica c64 ccpir

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PAMEL H12-PS53 IESERT 72C DEFECTIVE CO*C;ECTC2 PIM CRIM?S Defective cri p s were found on pins used in connectors in th: 72C insert for panel H12-P853 for the Susquehanna plant. This p nel is ccmon to

. both Unit 1 cad Unit.2. It was 'd: torc;ined that a cc 51nction of canufacturine '

personnel error cod criming tool malfcaction es c result of in' adequate ,

QA was responsible ~.for the defective crices. The d:fect coasists of a crig which conot,sett the required pull force.

The C 'tivt.pdd panel. 4MM.N)Spinot, cfectiiracreate (c;fety.hi c.ed cricps.cogldhve ca .thfq.;particular c:c::rreda ether panels ~ including..c6%3t'ceuld have < caused a suhtcntitl'Ccfety hazard.

3 Thus the' ce::djen:is L rep 4rtable. -

GE has 1622tificd'a' ttes period for this QA breakdom. Tb2 plants identified that1: q .t:W.56ficqtg61c.4.cro Erend Eulf 1 S 2, LP$ rick 1 & 2, and N- h N, GE his', s. hkhh ctSic!cd't.nir.spection kk: f pMrs= 5 [. drMn?

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tintbr this o to dat deviction cdcts on the cbove centioned plants. Tn plcnts identified teill ba notified of GE'-c plcns for inspection.

This insp0ctica ri be.ccepleted by January 18. 1980. . th re reuork end/or repair'isi,fc; tad to be required, GE will estchlidt a repair / rework schedule" cont /a. tent'uith project schedule requirc:ents. 't,1so manufccturing and QA procedurcs'have been todified to precluda defo;the cricping in the future. TCt:pss/027 m,.G.. ..,@* +T:..

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nuCtt^n ie.i G E [1 E 11 A 1. g) E L E U l 11 I t,IIEl 1.! ;.R) l a, ,3,t,c,;..g S Y S T E fa S DIV 1S I O . GEf 4ERAL ELEC fmC COM?ANY,175 CURTNER AVE., SArt JOSE CALITORNIA 95125 HC 391, (408) 925-5159

              -January 10, 1980 PE- 2274 Mr. R. A. Mulford Projectflanager LG5 Units 1&2 2301 Market Street Philadelphia Electric Co.

Philadelphia, PA 19101

Dear Didk:

StlBJLCT: LlHERICK GEIERATING STATION, ll.11TS 1 & 2 SITE INSPi.CTION RESULT 5 - PA!&L L T-if.t0 PINS The purpose of this letter is to infon.t you of the results of inspec-tion and tests conducted in recent weeks at Lir.:erick Site in accord with F01 Tims (linit 1) and Fui TRCU (Unit 2) on the Panels and Ter-cination Modules. The results are tabulated in Attachments A and B. Pull Test A. The Limerick I Panels had 3 pull test rejects in 834 pins tested. These tailures were In the 14 AWG wire size and the pounds at which they failed were 13.2, 16.2 and 22.8, neasured against a puli test requirement of 23 pounos. Due to tije high poil streosp.i of these three rejects and due also to the low reject percentasy.- (.35% again't a target of .65%) ther.e ;ian.1; are acceptabl<. ra further action is required. B. The lirnerich i Ternination !!cdules had zero pull test rejocti. in

                       '347. }Ilns tested, _ or a def ect rat.e o f 0%.       They are considered as ha.ing pasted the pull test requiren:ents.
                                                                                                                 ,g-,

     . Guwin A L Qi E tttinic
   /    Hr. R. A. Mulford
 !      P::ge 2 January 10, 1980 C. The '.imerick II Panels, had 10 pull test rejects in 778 pins teste        5 cf trie 10 r ejects were reported to have railed at I pr           Due to the high reject prrcentage (1.25% against a tai       s. .65%) anJ the icw value ,it which 60% of t he rejcct, occurred, it is considered that Unit 11 Panels failed the pull test requirenents. An FDI will be issued soon to perform 100^;

pull testing on these panel connections. D. The Lirnerick Il Termination Modules had zero pull test rejects in 384 pin; tested, or a defect rate of 0%. They are considered as having passed the pull test requirements. Very t u G egirs, l

           /:       -  ChY? JS$

H. G. DeVosd Projectliandger Liocrick Generatin.,f.tatica HGD: rra/1444-45 Enclosures (2)

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cc: R. H. Elias

                'd. W. Galbraith W. J. !! cal J.11. Val ton file 3.1/H12/LB

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                                       -              ATTACleiEliT A LIMERICK I Pa.nel s Wire           Total               Total Size            Pins               Conn       Rejects 14              360                  76           3 16              356                  65           0 18                 51                13           0 20                 19                  5          0 22                 48                  8          0 T-!4cds 14          - 162                    27           0 18               138                 23           0 20                 42                   7         0 LIMERICK II Panels               .

Ilire Total Total Size Pins Cunn Rejects 14 362 , 71 6 16 313 62 2 18 47 11 0 20 21 4 2

      .                                    22                 30                5            0 T-J9,d_s.

14 186 31 0 18 156 26 0 20 42 7 0

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  ..                                   ATTACIU! Ell? S l.IMERICK I Panel: - Total Rejects =3
                    !! ire                        Total     Total Size      Panel   Conn        Conn      Pins  Rejects (pounds) 14        648   J104           3        16   13.2 22.8 14        653  J101            2         9   16.2 LIMERICK Il Panels - Total Rejects =10
                   !! ire                       . Total     Total Size       Pa nel Conn        Conn       Pins  Re,iet t s (p,qand,s,},
                's 14        620   Jill           2        20       1 14        609   J147           6        31       1 14        603   J112          15        69       7.4 19.3 16        606   J129           5        19       1 1

20 601 J105 13 49 4 7.5 1 I

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