ML19312D209
| ML19312D209 | |
| Person / Time | |
|---|---|
| Site: | Phipps Bend  |
| Issue date: | 03/14/1980 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NUDOCS 8003210506 | |
| Download: ML19312D209 (3) | |
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TENNESSEE VALLEY AUT'H'ORITY-h; 7
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' CHATTANOOGA. TENNESSEE 374ot
'400 Chestnu't: Street Tower II d
March 14, 1980-
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i Mr. James P.10'Reilly, - Director.
- 0ffice of Inspection.and Enforcement
~. U.S.-; Nuclear Regulatory Commission ;
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. Region II - Suite:3100:
101 Marietta : Street
' Atlanta, Georgia.30303 Dear Mr.-O'Reillyi_
- hs requested ~by F.'W.1 Cantrell-of your staff on' March 7-1980, enclosed'
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is'a revised response.to noncompliance item 553/79-17-01, identified H in C. E. Murphy.'s letter dated January 10, 1980,- RII:BRC 50-553/79-17',
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' 50-554/79-16.i This response supersed_es our' previous response dated
' February.1,:1980, for noncompliance: item 553/79-17-01.~ - If you have
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- any' questions.regarding.this subject,
- please call Jim Domer at
- FTS 854-2014'.'
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Very truly:yours,.
p TENNESSEE VALLEY AUTHORITY IM )
M L. M. Mills, Manager-
' Nuclear _ Regulation and Safety Enclosure ^
cci LMr., Victor Stello, Director _(Enclosure).
Office'of Inspection and Enforcement
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.U.'S.- Nuclear' Regulatory Commission"
. ashington,- DC. 20555.
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- REVISED RESPONSE TOLNRC-0IE LETTER 1FROM C. E.; MURPHY TO H. G. PARRIS
. DATED JANUARY 10, 1930
(
REFERENCE:
RII:BRC-50-553/79-17,L50-554/79-16) fThis~ report isia' revised response to'the Notice of Violation described inlAppendix'A, Item A, of the OIE Inspection Report referenced above, 7This;is provided as? requested by Inspector lF.-W. Cantrell in our s
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' telephone conversation with him on March 7,1980~.
This report supersedes
. our. previous report dated February ~1,1980, on Infraction 553/79-17-01.
-Our: response to; Infraction 553/79-17-02 is unchanged.
.Noncomplihnce' Item --Infraction 553/79-17-01
, A.
-- As required l by Criterion V of Appendix B to 10CFh30,. and as
< implemented by paragraph 17.1A.S.of:the FSAR, " Activities affecting quality shall'be prescribed by documented instructions,
- procedures, and drawings... and shall be accomplished in
-accordanc~e with these instructions, procedures, and drawings."
. Paragraph-14.9 ofEprocess specification 1.M.1.2(b) of General Construction Specification G-29M, applicable to containment shell Twelding, limitsithe_ bead width resulting from weaving to 5/8-inch maximum for'the gas metal arc (including flux coced) process.
Contrary-to the above, on December 12, 1979, bead widths of 3/4-inch'to
- .7/8-inch en containment shell' welds IT 2301629 and IT 2301631, welded Twith the flux cored ~ process, were observed. Discussions with the inspection
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' personnel revealed that weaving the full width' of the -joint until' the joint is.ful1~has been the-practice in the past. This results in a bead width of one ' inch or greater at the top of the joint.'
This:is an infraction.
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- REVISED RESPONSE s1.
' Corrective' Steps'Taken and'Results-Achieved
- AllLwork.-on the two containment shell Celds cited in the infraction was' stopped. LA quality control. investigation report (QCIR) was-written to: document and. follow this situation.: All gas metal' arc flux core welding:in:accordance with General: Construction lSpecificat' ion G-29M is now being accomplished with a 5/8-inch
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l maximum weave 1 width.
' Disposition of theseitwo velds was predicated on the results of
- test. performed at'TVA's Singleton lbterials. Engineering Laboratories-.
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- (Singleton) to; determine.the effect of weave width 11arger than.5/S' inch.
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-Tho'. results Jofath~c; initial ' test"ati. Singleton on which(the
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- : February l1,!1980, response wasl based indicated that; the properties'.,
-fof the : veld' and f adjacentiheat-affected zone met. the ; applicable section P-
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Lof ? the. ASME Code, Sub.section KE, with the llarger weave width. However,
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tlater test'resultsifailed:to %upportLthe originalsconclusion. As a 3 result of;these(1 ster.:'te't-findings, NCR PBN-067.has=been deemed s
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- !' reportable'Eunderjl0CFR50.55(e).- This condition was; reported to; fInspector R. W.1 Wright >on March 6,31980.- In NCR'PBN-067fR1,-
i' eTVA'hasirecommended:the. removal of--the) weld metal disposited in x
iexcess ;of the :5/8-inch maximum.we' veiwidth requireme'nt. - However,.
a 2 the final decision 'on corrective actions-will be l determined by.thef
. Technical? Engineer,-General Electric /C.2F. Braun;
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(2.1 iActi$n TakenLto Prevent' Recurrence n
)Craftisupervision andlqu'ality control inspectors were instructed 2
.E-fon Decemberil7; 1979, to conform.ito requirements of applicable 4
' specifications".and codes on;;all, work.
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IDate When Full <Comol ance Was icnieved.
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[ Full compliance on thrwelds made with' excessive weave widEhs
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.will not be attained.until:NCR PBN-067 Riiis dispositioned and
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- corrective actions'on those welds are~ accomplished. If:lC; F. Braun:
, accepts.; th'e.:TVA, recommendation,' the 7 work' is ' expected-to be, completed
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by; September;30,;1980.s A
lAll' gas: metal arc flux core-welding 1 performed'sub' sequent to-
-December:17,-1979,lhas been in full compliance with GenerallConstruction
_. S;iecification,G 29M.
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