ML20099H876
| ML20099H876 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 05/07/1984 |
| From: | Kemper J PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| OL-A-134, NUDOCS 8411280372 | |
| Download: ML20099H876 (5) | |
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Subiect:
EIEC 'IE Regie: Letter dated Febre.a..y 9, ic82 23: hspectics of January 11-29, 1982 A' pectics Ie;c t No.- 50-352/82-03 & 50-353/82-02
^ -hs e:ick Generati 4 Statie: - U its 1 a=d 2 File:
QUAL 1-2-2 d52/8 353/82-02) rea: X:. Eaynes:
In res;cuse to the subject letter regardi=g ita:s identified duri=g the subject Espectie of co:st:setic: activities auth::1:ed by
.".'.3.C Lisasse Ncs. C;72-106 asi -1C*T,. We t:s:s=i-herewith the
- follevi=g:
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Attach =est I - Response to 1;;eM'v i Also en 1csed as regi=ed by the Notice of Violatics, is as affidavit relati=g to the res;ctse.
Should you '.. ave a=7 gesticus conce==i=g these 1 e:s, we vould be pleased to it ::ss t' e: vith you.
u Sisterely, 0S// -(
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At.ach=e Cc;y to:
Directo: cf hspecti:= a=i Ef : e=est I
U ited States Nucles: 2erdato:7 Cc==iss10:
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'10C7R 50.55s_ requires :hs: Cisss:1 valvas comply wi:h :he
'ASME D sfc. Code f or Pu=ps and' Valves- (DCPV), -which specifies l
Tin See:1on 314.1.6 :ha: repair welding procedures.be qualified in-accordance vi:h ASMI. Code Section IX..
ASME Code See:Lon IX,' Paragraph V-6= requires welding procedure requalificacion if'thero is a change in the hes: creating temperature.
The-
. repair:velding procedure, QA?-49D, dated May 7, 1971, and
- ?:ocedure Qualifica: ion Record.QA?-49D, dated oc:ober 26, 1971, limic posc-wold heat tren: men: temperncurcs-:o 1100 degree-1300 degree (Fahrenhei:).- Further, DC?V Seccion 314 g
specifies'that nondestrue:1ve ests =us: be performed after
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any heat treatment.
contrary to the.above, fro = Dece=ber 20, 1971 to Tebruary 12,
'1972,. Class 1 Main Steam Isolation valve 3217022D,-Serial No.
.3-683, was repair valded, radion sphod, and posc-wold hos:
c:aa t e d /:e:p a red at 1$0 deg: tee F.
RIS?ONSI TO VIOLATION Thc'rcuponse'co this violscion is addresund in two s,ups:s:e parts:
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1.
Radiography Before Te=pering:
The valve supplier's ande licensee's interpreta: ion of the code requirement for the timing of radiography is:
The March 1970 Addendum of the-Draft Pu=p and valve Code allows radiog-raphy to be_perfor=ed a: 'any. cine.
Paragraph 615.3(b) s:stes:
" Radiographic,, ultrasonic and addy cur:en: examinations _ may be performed before or after any forming or hea trea: ment.".Also, Seccion 314 of-the 1968 Draft AS3E Code for Pu=ps and Valves'for Nuclear Power requires cha:'"non-' dest.uctive exn=inacions for ma:erials shall be performed after any heat treatments'. required
'by the Material Specificacion".
The Material Specification for the MSIV's (ASTM A216-69) requires tha: the ma:erials be either normalized or normalized and tempered.
Thus, the D sfc Pu=p and Valve Code is in=arp;c:od for ASTM A216-69 to mean:
"non-destrue:ive exs=ina: ions for =a:erials s
shall be performed after normalizing'or normalising and ce:pering." l This interpreta: ion is considered as' good engineering' practice because :empering would not cause any change or itow:h of indica ions c defec:s.
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i.L issued :: =aks edi:orial and other The M:::h 1970JAdde.nds was ir' '%
osten:ici changes :o'the November 1963 draftoof :he ASME Code L( '
-for, Pumps and' Valves for Nuc1' ear Power and was invoked in :he c
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- o the. valve-body =anufac:urer.
Philadelphia
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Ilec::1: intends := no:e the us$ cf this Addenda in the'TSAE.
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.e This.in:e: pre:a: ion is consis:en: vich curren: edi: ions cf See:1on III of.cha ASME B&PV Code which' allows radiography :o-h e perfor=ed in any hea: created condition and does not sta:e:
"after'=aterial properties are established".
2.
'Pos: Weld Hos: T cacment At 1340 deg ce 7:
Weld Procedure QAP-49D, da:ed May 7, 1971 was used for-repair welds on MSIV 3227022D.
However, in March of 1973, Phila-dalphis.Elce::ic Co=pany identified a noncompliance to :his procedure during a. source audit:
weld repairs'in excess of the-qualified size range were made.. Corrective action to this finding was to modify,the procedure.
Previous to this finding, a qualification of this procedure was performed and a'PQR:exis:ed
. for the larger velds.- The modified procedure was back dated October'26,.1971 to =atch tha date of che PQR.
The October 26,
-1971 procedure was submi:ced as part of the final documentation package'for the valve and therefore this was the procedure used in reviewing the final records.
QAP-49D dated Occober 26, 1971-did not limit post vuld huac creatment temperatures..
In addition, the DCPV did not lisit the r/
- emperatures as do more_ current editions of the Code.
(Section fi IIT scarced in 1973 to li=it PWMT comperneures to 1250 degroo 7
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for carbon stec1).
f.ls o, Succion IX of.che Code was a=higuous-in regard to wha: change in heat treatman: temperatures cons:1:u:ed the need for procedure requalification.
However,,recen: editions' of Section IX have cleared the ambiguicy.
In. view cf the curren:
iacurpretaciuu..wu are in the process of qualifying the veld
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procedure for the post veld heat.crea: men: - compara:ures used.
We expect to have the qualification tes:s complaced and evalua:ed 1
i L'y May 31, 1982.
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We have reviewed the docu=enta:$on of several other icens supplied g<
by the sa=a foundry and samples of other. suppliers and have determined that the high post veld heac creat=ent temperaturer are-isola:ed to the MSIV's.
Also, since 1973 the Code has limi:ed I
post' weld heat creatman: temperatures.
Therefore, other than L'
the above described actions, no additional ac: ion :o preven:
l recurrence is needed.
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10C7R 50-Appandix B Cri:arion VL equires that sc:1vi:iss affecting quali:y be perfor=ed,in accordar.ca with procedures.
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Project Special Provision Notic's PSP C-6.1, Kevison 3, Paragraph 3.1.5, specifies'that inspection hold.poir.:s are mandatory and' work shall no: proceed to a point where work is no longer inspec: bic.
Qu 11:y Con:rol Instruction W-2.00, Paragraph 2.4.a.1, requires that =ini=u: prehea: and in:e: pass temperatures be verified for full penetration groove velds as a hold point inspe :1on-
. Con :ary :o :he abova. reviews.on January 21, 1982, disclosed
'tha: the:prehes; and in:e: pass te=pera:ure hold poin: inspe::icns for full penet nrion nrnove velds listed on quality con:rol-Inspeccion Record C-1415-W-1 had not been performed, ar.d the.
welds had b,een co=pleted withou: :hes.
Responso to Violation Eachtel Power Corpora:1on'NCR 5353 was. written reporting that the prehea: had no: boon verified on Quality Control Inspection Record C-1415-W-1.
The NCR has been disposicioned by Bechtel design engineers to "use-as-is".
The':stionale for this decision is : hat the prehea:. requirements for these welds are to prehea: to 70 degree F'if'the ambione compara:urauis below 32 degree F.
The subject welds
' wc c performed during May and June of 1979,.when the'subient E
e' temperature was above 32 degree 7.
The subject Quali:7 Con::o1
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Inspection Reco'd C-1415-W-1 did no: require interpass :e=pera:u're
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inspection.
In an effort :o de:er=ine if this inspec:or had missed other prehea:
hold point inspec: ions, twelve (12) other inspection records ec=-
placed by him were reviewed for si=1lar discrepancies.. No other 4
discrepancias or =issing' sign-offs were found on these records.
All open Civil Quality Con::o2 Inspection Records were reviewed for-
- preheat requirements and sign-offs.
All, vere found-in conformance vich the applicable procedures.
A t:Aining session was held on January 13, 1982 for Qus11:7 Con :al Welding Inspec: ors e=phasi:i=g
- the proper prehea: requirements.
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~CEI S. IE L-a, being fi:st dul',r svc== da;cses and says:
'.~:st he is Ti:e ?:ssitent of Philadelphia I'.ne::1:
Cc=;asy, the h:1 der of Cctst=: tic: Pe=its C??2-1C6 asi
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C??a-107 fc: -* erick ce=erating Statics r=dts 1 asi 2; that he has sad the foregoing Res;cese to Inspectic: Re;c t No. 5C-352/82-03 and 50-353/52-02 and 'c:vs the ec: tests thereof; asi tha.t the sta.tesents and stters set fc th therein a:s t=e asi ce=ect to the best of his 'covledge, inf =atics and belief.
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