ML20245F310

Advises That Util 890724 Response to Generic Ltr 89-08 Re Pipe Wall Thinning Induced by Erosion/Corrosion Acceptable. Records of Program & Results from Implementation of Required Monitoring Program Should Be Maintained for Potential Audit

ML20245F310
Person / Time
Site:	Prairie Island
Issue date:	08/04/1989
From:	Di Ianni D, Diianni D Office of Nuclear Reactor Regulation
To:	Parker T NORTHERN STATES POWER CO.
References
GL-89-08, GL-89-8, TAC-73527, TAC-73529, NUDOCS 8908140233
Download: ML20245F310 (2)

Text

-- . - ._ _ - _ - -_- _ - _ _ . _ _ _ _ _ _ _ _ _ _ _ - _ _ - - _ _ _

( August 4,'1989 9

, DISTRIBUTION: ,

Dicket Nos: R0-282,and 50-306 =DoctetF11es5(50-282/306)

NRC/ Local PDRs v . .

.PD31 Gray File 'CYCheng Mr. T. M. Parker, Manager MVirgilio TLChan Nuclear Support Services - .

.DDilanni FWitt Northern States Power Company OGC 414 Nico11et Mall EJordan l  ; Minneapolis,' Minnesota 55401 BGrimes ,

ACRS

Dear Mr. 7,

• '

• GPA/PA

SUBJECT:

. RESFJnx TO GENERIC LETTER 89-08 EROSION / CORROSION - INDUCED PIPE WALL THINNING (TAC NOS. 73527 AND 73529)

On May. 2,1989, the Comission issued Generic Letter (GL) 89-08 dealing with pipe wall thinning induced by erosion / corrosion. In this letter we requested the implementation of-a long-term erosion / corrosion monitoring program that provides assurance that procedure or administrative controls are in place to assure that the NUMARC program or another equally' effective program is imple-mented and the structural integrity of all high energy carbon steel systems is maintained.

By letter dated July 24, 1989, you responded to our GL for the Prairie Island Nuclear Generating Plant Unit Nos. I and 2 by describing the Administrative Controls, procedures, the NUMARC Program and the engineering activities that will be applicable for the erosion / corrosion program. We find that you have provided an adequate response to GL 39-08 and.the response provides assurance that erosion / corrosion will not degrade the pressure boundary to below the

. applicable code design value. This fulfills your requirement in responding to GL 89-08. You should maintain in auditable form, records of the program and the results from implementation of the program. These records may be subject

'to future auditing. This completes our effort under TAC NOS. 73527 and 73529.

Sincerely,

~

Dominic C. Dilanni, Project Manager Project Directorate III-1 Division of Reactor Projects - III, IV, V, and Special Projects Office of Nuclear Reactor Regulation cc: See next page

[PARKERLEJTER]

K+ e 4 ofoi i PM/PD31:DRSP (A)D/PD3: :DRSP l DDilanni: sam LYandell W u f; i  !

8/@/89 8/4 /89 I 8908140233 890004 a PDR ADOCK 05000282 E P PNU 8 t

_ . _ _ _ _ ..___.___.-_._______o

t

/?

l' ' '

August 4, '1989

.Mr. T. M. Parker. .

Prairie Island Nuclear Generating

[ Northern States Power Company Plant V

-CC:

Gerald Charnoff, Esq.

g Shaw, Pittman, Potts and Trowbridge-l2300 N Street, N.W.

Washington, DC 20037 Dr. J. W. Ferman

. Minnesota Pollution Control Agency 520 Lafayette Road St. Paul, MN 55155

' Mr. E. L. Watz1,. Plant Manager Prairie Island Nuclear Generating Plant Northern States Power Csapany Route 2 Welch, Minnesota 55089 Joseph G. Maternowski Assistant Attorney General Environmental Protection Division Suite 200 520 Lafayette Road St. Paul, Minnesota 55155 U.S.' Nuclear Regulatory Commission Resident Inspector's Office 1719 Wakonade Drive East Welch, Minnesota 55089 Regional Administrator, Region III U.S.: Nuclear Regulatory Commission Office of. Executive Director for Operations i 799 Roosevelt Road  !'

Glen Ellyn, Illinois 60137

.Mr. William Miller, Auditor Goodhue County Courthouse Red Wing, Minnesota 55065

_ _ _ - _ _ - - _ _ -