ML20136C096

Site Problem Rept 125,Revision 1,re Failure of Matl in Makeup Pump Stretched Studs to Meet Requirements of Certificate of Conformance.Ke Moore 790712 Memo to RP Williamson Re Necked Makeup Pump Case Stud Encl

ML20136C096
Person / Time
Site:	Three Mile Island
Issue date:	09/29/1977
From:	Pletke L, Rise D, Rogers L BABCOCK & WILCOX CO.
To:
References
TASK-TF, TASK-TMR 125-01, 125-1, PROB-770929, NUDOCS 7909140390
Download: ML20136C096 (3)

Text

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O o SITE PROBLEM

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REPORT TPJJ13MITTAL

• • • • CLEARED ****

FILE: 13- g- /25.of TO: Change Control For Distribution CONTRACT NO: 620-00 o'6 S . II. Klein -

Quality Ascuranee SPR / 7 r-o /

Central Engineerine Files TIEC meAn L. s cHz emyn- Tnc.k Enginect 4 ,, ,

/ ./P. 6 7 rx E - Project Mancrer DATE: 9-no -7 )

STATUS CODE C L. C. Rogers - MET. ED. 6/. /~uNd Foo '> f 4 F. R. Taist - TOLEDO .

J. R. Bohart - Intl. Support .

. J. L. Donnell - 0FR B. A. Karrasch - Plant Integration Attached is one copy of Site Probic:n Report No. /; c-a / which was processed on Contract 620-00 c4 . Future contracts have been reviewed for the potential of a similar probicm. This probics isdis not considered applicabic to other contracts .

PIMARKS:

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NUCLEAR SERVICE SUPPORT ENGINEER 7 9 0914 0 3cj(y f _A; ;$ .5 ,hx:\ .3 )

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L. Rogers /'b.a//A

• Jersey Central 13 - 620-0006 125 ci P.A. NO. PAR 1 MO./lA5h NO. Grove no. M Q. h0.

YENDOR Bingha: 021-861LV 35 h0 1,2,3 111LE (HAI .30 CHAkACTEp5) PROBLEH COM1ACT .

IUP-lC Stretched Casing Studs E. G. Schaedel [/

, DESCRIPil0N Of PROBLEH:

As analysis of one of the stretched studs, by GPU, revealed that the caterial was not A-193-GR 16 as specified on the Certificate of Conformance. Tnis has raised questions concerning the validity of the Bingha: Q.A. data package.

See attached copies of CFU's analysis and MUP-1A,3,C Certificates of Confer =ance E

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5, y STA195-AC110h TO DATE, IKCLUDING PERSONS CONTACTED:

R. Willia = son L. Pletke ,

FURTHER AC110N RECOHHEHOED BY Lill PERSONNEL:

1. GPU has requested the test results of B&W's analysis and any conclucions regarding the stud elongation.

2. Advise if the Certificates of Confor=ance are valid for IUP-1A and 1B and IC.

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cc: H. F. Dobel THE BABC0CK & WILCOX COMPANY S. Funkhauser POWER GENERATION GROUP R. A. Fearing - Mt.

Vernon To l/

V R. P. WILLIAMSON, NUCLEAR SERVICE From K. E. MOORE, MC&C, TECHNICAL STAFF (7 Coh ses m .s Cust. File No.

THI-2 or Ref..

• #

• JULY 12, 1977

" NECKED" MU PUMP CASE STUD i

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The Materials, Chemistry and Codes Unit was requested to coordinate  !

the testing of an "overtorqued" makeup pump case stud from TMI-2. The l j

stud'given to MC&C was approxicately 6 in. in length x 1 in. diameter marked B-6. Evidence of necking was apparent over about a 3 in. length.

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The stud was subjected to hardness testing and emission spectroscopic analysis at Mr. Vernon Works - QA Metallurgy Lab. The verbal report from i Mt. Vernon indicates the following:

1. Hardness values equivalent to an ultimate tensile strength of

-110 ksi.

2. The chemical composition of 416 S.S. ,

Mr. R. A. Fearing - Mt. Vernon, will transmit his test report confirming these results at a later date.

While the measured hardness values were slightly lower than the MTR, ',

for this stud, certified by ESCO, there is no reason to bla=e cither the '

composition or the strength properties of this stud for the observed necking. '

8 geq K. E. Moore KEM/od ,

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. trk- ~.1 1 SPECIFICATION FOR ALLOY-STEEL BOLTING MATERIALS FOR dc55 d HIGH ';EMPERATURE SERVICE

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(D S S A-193 .

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% (Identical with ASTM Specificacion A 193-66) l

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? Scope for Lo..Temperaturt sc.Wce ( ASTM Designa-Li* A (b) The austenitic steel shall receive a

1. (c) This speci$ cation covers alloy. carbide solution treatment. This sha!!

d steel bolting material for pressure vesseis, Process

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d. uhes, 6anges, and 5ttings for high. ately af ter rdiirg or forpng to cwl at a coo ],, temperature service (Note 1). The term 2. The steel shall be made by one or rate su5ciently rapid to prevent injury l

3

$ W j *boltirg material" as used in this specifi. both of the following processes: open. to the material. It shah be reheated and cation covers ro' led, forged, or strain hearth cr electric. furnace. held a su5cient time at a ten perature at W

N harder.ed bars, and bolts, screws, studs, and stud bolts.

which the chromium carbide wiH go into Discard solution and shall then be co:!cd in air l i.' $ (b) Eight grades are covered, includ.

• or in a liquid medium at a rate su5cient

'M tag four ferritic steels and four austenitic 3. A su5cient discard shall be made to prevent the reprecipitation of the

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O steels designated E5, DS, etc. Selec. frcm each ingot to secure freedom from ca rbide.

tion wGl hoend upon desirn, service con. injurious pipmg and undue segregation. (c) When increased mechanicd prr p.

.N'N ditions, mechanical proper' ties, and high.

temperature characteristics (Note 2). Heat Treatment erties are desirable, the austenitic boiting materials may be strain hardened.

g{ (c) Nuts for use with this bciting ma. 4. (c) Ferritic steels shall be properly l

d terial are covered in Section 13. heat treated as best suits the charat.

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$ ' 'y$ (() Supplementary requirements (Par. teristics of each grade. Immediately sf ter 5. Each alloy shall ccnform to the N  !

ch, ag raphs Si and S2) of an optional rolling or forging, the boiting maierial requ:rements as to chemical composition l 4 c.ature are provided. These shall apply shall be aHoued to cool to a temrerature prewribed in Table I.

aly aben speci6ed in the inquiry, con. below the cooling critical targe. The ma.

.M tract, and order, terials uhich are to be furnished in the a Ana sis Non L-It ordering material under this liquid-quenched condition shall then be 6. An analysis of each heat of steel e inecihatmn. or ir. orperatie: it as a reference umformly reheated to the proper tem. shall be made by the rnanufacturer to in iny irMdaal snecdcatien. .purcbeers must perature to refme the grain (a group thus determine the percentages of the ele.

. 4

• 6 ;:2te the steel by ide::ti5 cation symbol and reheated being known as a "cuenching ments speci6ed in Section 5. Th swys4. or ataps atone. ned de5citely specify char;:c") and quenched in some liquid shall be made from a test inrot ta' ken f$m T for aNi i$um1 rnper' medium under subst antially uniform during the pouring of the heat. The d Ira ierperaure that at least conforms to the conditions for each quenching charge. chenucal compos; tion thus determined fQT repre:,erts of Secnoa 4 (c) or (t). i The mater:als whkh are to be furnished shall be reported to the purchaser or his l

.TM . Nm 2.-The comrnittee formutatiog this in the normalized or air quenched condi. representative, and shall conform to the be rat c cs e u$eIfor tIp es t ti n shaU be rcheated to lhe prcper requirements speci5ed in Section 5.

d'J J poo.e. Othe ec,peutions siti be considered t emperat ure to re6ne the grain and

.:9 krindusier, by the comittee from time to time cooled uniformly in air to a temperature Check Analysis W u the n-d becces a;mucci. below the conhng critical rance. The Nm 3 -For grades of ahoy. steel bdnec 7. An analysis may be made by the material, whether liquid quenched or purchafer froIn samples representing the h eNr$ere a$pIatNas refe eIe s5c] n rmalized, shall then be uniform!y re. bolting material. The chemical compo31

' '7S b eide to the Sreci:stions for Querated acd heated for tempering. The minimum tion thus determined shall conform to J ,* Ternered AUoy Steel Bedts aad Studs with tempering temperature shaU he at speci. the requirements speci6ed in Section 5.

g 5mtat;e huts ( ASTM Des pat ec: A 354).

hm 4 -For grades of ancy-steel bo!tieg Sed in Table II. The max!=um operat.

. w.q <i., Medal suitat:e ic? use in Imotemperature a;>- ing temE>erature should be at least 100 F Tmue Proputies grf,* pano,3, r.rerene, shwd he marie to the (56 C) lower than the minimum temper- 8. (c) The material shall conform to A .{ $(cchauons for ADoy6 teel Bolting Materials ing temperature.

• [.,h,.;3.E the requirements as to tensiie properties N M. 101 M.;gP(.

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