ML20245A101

Forwards Safety Evaluation Accepting Util 890515 & 19 Submittals Re Circumferential Crack Flaw Found in Iconel 182 Butter Area of Inconel Weldment Between N4-A Feedwater Nozzle & Carbon Steel Safe End

ML20245A101
Person / Time
Site:	River Bend
Issue date:	06/15/1989
From:	Paulson W Office of Nuclear Reactor Regulation
To:	Deddens J GULF STATES UTILITIES CO.
Shared Package
ML20245A102	List: ML20245A101 ML20245A105
References
TAC-73115, NUDOCS 8906210078
Download: ML20245A101 (3)

Text

m q g y

7 .

g. 4 j - -

.. E June 15, 1989 bocke No. 50-458 i

Gulf States Utilities

! ATTN: Mr. James C. Deddens SeniorVicePresident,(RBNG)..

Post Office Box 220 St. Francisv111e, Louisiana 7077E

SUBJECT:

~CRACKINDICATIONINTHEINLETFEEDWATERN0ZZLE{N4-A)TOSAFEEND '

oj WELD . RIVER BEND STATION (TAC NO. 73115) ,

The NRC staff has reviewed your May 15 -and'19,1989 submittals regarding the1 .

circumferential. crack flaw found in the Inconel 182 butter area of the Incorel, weldment-between the.N4-A feedwater nozzle and carbon steel safe end. This: '

flaw was' found during your 1989. refueling outage. Based on our review of your flaw evaluation, we conclude that River Bend Station, Unit 1;can be safely.

operated for one additional 18-month fuel cycle in its present configuration pending satisfactory results of the mid-cycle ultrasonic examination ofythe flawed weld. We request that the results of the mid-cycle ultrasonic examination be submitted to NRC for review prior to plant start-up from the mid-cycle outage to ensure that the structural. integrity of the weldment is maintained.

The staff's Safety Evaluation'is enclosed as discussed in our May 23, 1989 '

letter. The reporting and/or recordkeeping requirements contained in this letter affect fewer than ten-respondents; therefore, OMB clearanceLis not required under P.L.96-511.

Sincerely,

'/s/  !

Walter A. Paulson,' Project ' Manager : )

Project Directorate - IV< l Division of Reactor Projects III,. ^

IV, V.and Special Projects i

l. Office of Nuclear. Reactor Regulation' j

Enclosure:

l Safety Evaluation DISTRIBUTION: .

4*chetJindh NRC PDR ' Local PDR PD4 Reading 1 cc w/ enclosure: L. Rubenstein ,Ft'Hebdon P. Noonan W. Paulson j See next page C. Y. Cheng ' E., ' Jordan :B. Grimes "ACRS(10) '

G. Holahan OGC-Roc kville ' PD4 Plant File

[RBCRACKINDICATIONS]

l t

PD4/U\k PNoonan PD4/P WPa n:cs PD4/D

.FHebdon tg

]

L 06/l6/89 06/pf/89 06/p5/89 -/  :

I .

bS0c?0?,0Qg  ;

i PNU ~

L_-- - _ _ _ - _ - . _ -

i l

SD KfC I

8 '

o g UNITED STATES f

, g NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 k...+);E June 15, 1989 Docket Mo. 50-458 Gulf States Utilities-ATTN: Mr. James C. Deddens SeniorVicePresident(RBNG)

-Post' Office Box 220 St. Francisville, Louisiana 70775

SUBJECT:

CRACKINDICATIONINTHEINLETFEEDWATERN0ZZLE(N4-A)TOSAFEEND WELD . RIVER BEND STATION (TAC N0. 73115)

The iff. staff has reviewed your Nay 15 and 19,1989 submittals regarding the cirettferential crack flaw fcund in the Inconel 182 butter area of the Inconel weldment between the H4-A feedwater nozzle and carbon steel safe end. This flaw was found during your 1989 refueling outage. Based on our review of your flaw evaluation, we conclude that River Bend _ Station, Unit I can be safely cperated for one additional 18-month fuel cycle in its present configuration pending satisfactory results of the mid-cycle ultrasonic examination of the flawed weld. We request that the results of _ the mid-cycle ultrasonic examination be submitted to NRC for review prior to plant start-up from the mid-cycle outage to ensure that tfre structural integrity of the weldment is maintained.

The staff's Safety Evaluation is enclosed as discussed in our May 23, 1989 letter. The reporting and/or recordkeeping requirements contained in this letter affect fewer than ten respondents; therefore, OMB clearance is not required under P.L.96-511.

Sincerely, i h h. 4 Walter A' Paulson, Project Manager' Project Directorate - IV Division of Reactor Projects III, IV, V and Special Projects Office of Nuclear Reactor Regulation I

Enclosure:

l Safety Evaluation ec w/ enclosure:  ;

'See next page  ;

-_- __ =___a

3 Mr. James C. ' Deddens Gulf States Utilities Company River Bend Nuclear Plent CC*

Troy B. Conner, Jr., Esq. Mr. J. . E. Booker Conner and Wetterhahn Manager-River Bend Oversight 1747 Pennsylvania Avenue, NW P. O. Box 2951 Washington, D.C. 20006 Beaumont, TX 77704 Mr. Les England Mr. William H. Spell, Administrator Director - Nuclear Licerising Nuclear Energy Division Gulf States Utilities Company Office of Environmental Affairs P. O. Box 220 P. O. Box 14690 St. Francisville.-LA 70775 Baton Rouge, Louisiana 70898

- Richard M. . Troy, Jr. , Esq.

Assistant Attorney General in Charge. Mr. J. David McNeill, III State of Louisiana Department of Justice William G. Davis, Esq.

234 Loyola Avenue Department of Justice New Orleans, Louisiana 70112 Attorney General's Office 7434 Perkins Road Resident Inspector Baton Rouge, Louisiana 70808 P. O. Box 1051 St. Francisville, Louisiana 70775 H. Anne Plettinger 3456 Villa Rose Drive Gretchen R. Rothschild-Reinike Baton Rouge, Louisiana 70806 Louisianians for Safe Energy, Inc.

2108 Broadway Street New Orleans, Louisiana 70118-5462 President of West Feliciana Police Jury Regional Administrator, Region IV P. O. Box 1921 U.S. Nuclear Regulatory Comission St. Francisville, Louisiana 70775 Office of Executive Director for Operations Mr. Frank J. Uddo '

611 Ryan Plaza Drive, Suite 1000 Uddo &~ Porter Arlington, Texas 76011 6305 Elysian Fields Avenue  ;

Suite 400 -!

Philip G. Harris New Orleans, Louisiana 70122' Cajun Electric Power Coop. Inc. .

10719 Airline Highway P. O. Box 15540 ,

Baton Rouge, LA 70895 i