AUG 22 194

MEMORANDUM FOR: R. C. Lewis, Director Division of Project and Resident Programs Pegion II

FROM: Gary G. Zech, Chief Vendor Program Branch Division ot Quality Assurance, Safequards,

and Inspection Programs

SUBJECT: DEFECTIVE SPRING TANGS IN MCDEL PSA-1 AND PSA-3 MECHANICAL SNUBBERS MANUFACTURED BY PACIFIC SCIENTIFIC COMPANY AND FURNISHED FOR USE AT SHEARON HARRIS AND WATTS BAR NUCLEAR FACILITIES (VITS NCS. 83-281 AND 83-283)

During a VPR inspection at Pacific Scientific cnopany (PSCc: at Anaheii;, California, in October 1983 it was verified that the capstan spring tang problem in the PSA-1 and FSA-3 snubbers was evaluated by PSCo anr notification letters were sent to all affected customers. Independent testing demontrated that forming ot the tang after age hardening at 900'F caused high residual stresses which induced hydrogen cracking during silver plating. PSCo has now ý.pecifiea the manufacturing process requiring the spring vendor to torm the spring before age hardening and has imposed a 100 percent ragnetic particle examination of the spring tang root after silver platir.g.

The results of this inspection are documentec in the enclosed VPB inspection report no. 999C0;55/03-O1, which is provided tor information.

Should you have any out-stions concerning this inspection, please contact Mr. R. E. 01ler it FTS 492-%964.

ORCINA L :;IGN, Ei. 9Y ,HA.* · 'E '.

Cary G. !ech, chiet evndui Progran' Rranrch )iv1i,i(in of Quil i.y Assurr, ce, Safeg,,das,

,in(; I .p(ectiorn Prr, rdfniS

Fn( Insurt': [n'.Ipt(. t L n repo t rt a )9l }(),l-, i -01

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B4082890-15 940822 PDR ADOCK 05)000390 0 PRw

DRGANIZATICN: PACIFIC SCIENTIFIC COMF ,N KIN-TECH OIVISION ANAHEIM, CALIFORNIA

REPORT INSPECTION INSPECT:GN NO. 93900255/83-01 DATE(S): 1/31-1 3.N3 ON-SITE HC S: 50

C3RRESPONDENCE ADDRESS: Pacific Scientific Company Kin-Tecn 3ivisicn ATTN: Mr. P. A. Hadnagy

Director, Technical Operations 1346 South State College Boulevard Anaheim, California 92803

ORGANIZTIGNAL CONTACT: Mr. 3 . A. Hadnagy, Director, Technical Operations

'ELEPHONE NUMBER: (714) 774-5217

PRINCIPAL PRODUCT: Mechanical shock arrestors.

N•CLEAR :NDUSTRY ACTIVITY Approximately 53 percent.

).t~e', ~Cpec'~c4.

2 -. m t..on, Re.~ct'.~ :n~yect' o~ .3~c;r

"K/

:<4L::N ' AN % AND SOPE:

A. E A13S L :FR Dart 56, Appendi 1 CR rt

2CL ni s in-Dection wa-; jrform.f T .,- A i rr.m 2

:mDia l en.. i n n the . rPas if tt .. .f Dr , • . - n ni : , ,mn jul l .t...r' n] proceiS Contro , nor" , ' r c -' e ic : ,

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(;n

ENCLOSURE

IT~E~ :L/S3E:-Srj~)

/cS/*'i-^U'.tLO 31

-- CI · ~~

ORCANIZATION: PACIFIC SCIENTIFIC COMPANY KIN-TECH DIVISION ANAHEIM, CALIFORNIA

REPORT INSPECTI3N NO.: 99900255/83-01 RESULTS: PAGE 2 of 5

A. VIOLATIONS:

None

8. NONCONFORMANCES:

1. Contrary to Criterion V of Appendix B to 10 CFR Part 50 and procedure No. 10-19, Revision G, no subcontractor's certificate of calibration for the coordinate measuring macnine SN-QC-3O was maintained for the calibration performed cn June 7, 1983.

2. Contrary to Criterion V of Appendix 3 to 10 CFR Part 50 and oaragraph 7.1.1 of PSCO QAM, Section 7, PSCn Purchase Orcer No. T24950 was placed for capstan springs although the s-pplier was

cnt on the applicable Aporoved ~ Loup'er ist (-SP.

3. "Ontrary to Criterion V of Appeloix 3 *o ,1 CFR 1 art 50, !'anufactjrlng, Assembly Outline io. 13C16.4-J', and Serv•ce Euletin '<c. 198 l-Jl for rewor·i ng PSA-- nc 35-L C k i rres:)'-'', crc6 s' en:n were ict i'c 1U ed for the -aec' , ,ar' "ri ' , ̂ ::Cit;'- ar'-, .- i,c, external inspection stamping wr'cn were obser.eL nse5' :errTrmeC luring tis inspection.

SjNRESCLvED ITEMS:

4;ri;US :3 ' EVIGUS INSPECTION FINOIrGS (v ý CIer:

(Clo~ed) Unresolved Item (82-02): C er',•-rs a: ' . R eir" .ei,: ;n ,amaged snubbers for utilities ar otý,er .rekw ;.L C ecrn.ica' shocK arrestors. written procedures i-e cIle~, "ne es.ti are documented, and the snubbers are rece'-t 'ie, o to t ",. .j-'- _ ',,:le

NF-1 Data Report conditions. mowe4e', trere w3 , .".en pr? gr.,' to contrcl this activity and it is not :,art or th.e , . nr ,;. . .,:-., ... * A

pronram manual.

revlew .rin thi s nspecton e-rli - '" 3 ' ' n "e r . . ..-*:

t. '', L , .' ,t tn e r QA Tr an . s ,.. -. , .r ,

'RGANIZATION. PACIFIC SCIENTIFIC CCMPANY

KIN-TECH DIVISION ANAHEIM, CALIFORNIA

REPORT INSPECTION O. 99900255/83-01 RESULTS: PAGE 3 of 5

E. OTHER COMMENTS OR FINDINGS:

1. Manufacturing Process Control (v5 R. E. 211er): The NRC inspect' reviewed four sections of the PSCO's QA manual to verify that th's activity is controlled by the QA program.

Observations were made in the shop of inprocess assembly operations of shock arrestors. Discussions were also held with QC inspection personnel concerning inspection activities and their dccumentaticn..

A review was also made of: (a) five inspection and manufacturing procedures, (b) two parts manufacturing outline travelers, and

(c) two assembly outline traveler recorad ackagea.

titnin this area, no nonconfor'mances were i'et:fied.

' uon -nfr ma'ces and Correcti e Acti n (yv . E. C"r): The NRC *nsectior e. 'ewed Sect'on 12.c or the IC s A -,.n, to .erify tha tnee ictii-ties are contro'led sy te A

,bt:ervations were made of locKed ca es _:lnta niq ̂ ,ie: :,. . . materials and items.

A review w.a also made of: (3) three relted : c":eres, , a -o;nconforming item log, (c) a i•t 7' materi e. . . "a~ -. ,e 'e s , ind (d) ten record packages c.ons' st¾ .t' te . •d -,-,.t 'e i- 3nd ., '..re Reprts, Failure Analysis and ore ct- e At: n ie rt , ind/r vendor Corrective Action Reourts

itnhin thiSs area, no nonconf-rmances kere .- ntfi 1.

S1 CFR Pirt 21 Requirements ( E. - R spectr examlned the Jocuments ;ost..d i-n the '. C *i n,. n'~. .: . na:,": .nd reviewed tneir deficiency repc't'ng ' r;,: :,,r

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