ML20247K774

Informs That Partial Review of 890125 & 0320 Submittals Re Helium Circulators complete.Ten-yr Insp Recently Conducted on Circulator C-2105.Insp Revealed No Defects or Unacceptable Conditions

ML20247K774
Person / Time
Site:	Fort Saint Vrain
Issue date:	09/15/1989
From:	Heitner K Office of Nuclear Reactor Regulation
To:	Crawford A PUBLIC SERVICE CO. OF COLORADO
References
TAC-68707, NUDOCS 8909220015
Download: ML20247K774 (3)

Text

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[y . September 15, 1989 Docket No. 50-267 Mr. A. Clegg Crawford Senior Vice President, Huclear Operations t

Public Service Company of Colorado Post Office Box 840 Denver, Colorado 80201-0840

SUBJECT:

REPAIR OF CIRCULATOR DEFICIENCIES (TAC NO. 68707)

The staff has completed a partial review of your submittals dated January 25, and March 20, 1989 concerning the Fort St. Vrain (FSV) helium circulators.

These reports summarized the corrective taken after the failures in circulator C-2101 in July 1987. These changes included tighter control of water chemistry changes to fastener materials, better control of preload stresses in fasteners, and improved fastener procuranent.

Additionally, a ten-year inspection was recently conducted on circulator C-2105.

l The inspection revealed no defects or unacceptable conditions.

On September 1,1989, you announced FSV would discontinue further power operation and begin the shutdown and defueling program. At this point, the staff believes

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our further detailed revieu of issues concerning the circulator operation is I unwarranted. Public Service Company of Colorado should continue all programs to support reliable circuiator operation as long as there is fuel in the reactor.

Sincerely,

/s/

Kenneth L. Heitner, Project Manager Non Powcr Reactor, Decommissioning and Environmental Project Directorate Division of Reactor Projects - III, IV, V and Special Projects Office of Nuclear Reactor Regulation cc: See next page DISTRIBUTION cDocket File d NRC PDR Local POR PDNP Reading G. Holahan ADR4 S. Weiss E. Hylton K. Heitner 0GC-Rockville E. Jordan B. Grimes ACRS-(10)

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September 15, 1989 Docket.No. 50-267 Mr. A. Clegg'Crawford Senior Vice President, Nuclear Operations Public Service Company of Colorado

' Post Office Box 840 Denver, Colorado 80201-0840

SUBJECT:

REPAIROFCIRCULATORDEFICIENCIES(TACN0.68707)

The statf has completed a pertial review of your submittals dated January 25, and March 20, 1989 concerning the Fort St..Vrain (FSV) helium circulators.

These reports surr.arizea the corrective taken af ter the failures in circulator C-2101 in July 1987. These changes included tighter control of water chemistry changes to fastener materials, better control of preload stresses in fasteners, and improved fastener procurement.

Additionally, a ten-year inspection was recently conducted on circulater C-2105.

The inspection revealed no defects or unacceptable conditions.

On September 1,1989, you announced FSV would discontinue further power cperatier.

-and begin the shutdown and defUEling program. At this point, the staff believes our further detailed review of issues concerning the circulator operation is unwarranted. 'Public Service Company of Colorado shculd continue all prograros to support relittle circulator operation as long as there is fuel in the reactor.

Sincerely, he xb. Lg Kenneth L. Heitner, Project Manager Non-Power Reactor, Decommissioning and Environmental Project Directorate Division of Reactor Projects - III, IV, V and Special Projects Office of Nuclear Reactor Regulation cc: See next page

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Mr. A. Clegg Crawford~ j Public Service Company of Colorado' Fort St. Vrain CC: l Mr. D.;W. Warembourg, Manager Robert M. Quillen, Director '

Nuclear Engineering Division Radiation Control Division

'Public Service Company Department of Health

.of Colorado 4210 East lith Avenue-

,P. O. Box 840 Denver, Colorado 80220 Denver, Colorado. 80201-0840 Mr. David Alberstein, Manager Mr. Charles H. Fuller

' Fort St. Vrain Services Manager, Nuclear Production ,

GA Internt.tional Services Corporation and Station Manager l

-Post Office Box 85608 Public Service Company of. Colorado-San Diego, California 92138 16805 Weld County Road 19-1/2 Platteville, Colorado 80651 Mr. H.'L. Brey, Manager Nuclear Licensing and Resource Mr. P. F. Tomlinson, Manager Management Division. Quality Assurance Division Public Service Company of Colorado Public Service Company of Colorado P. O. Box 840 16805 Weld County Road 19-1/2 Denver, Colorado 80201-0840 Platteville, Colorado 80651 Senior Resident Inspector Mr. D. D. Hock l U.S. Nuclear Regulatory Commission President and Chief Executive Officer  !

P. O. Box 640 Public Service Company of Colorado Platteville, Colorado 806!' Post Office Box 840-Denver, Coloraco 80201-0840 Kelley, Standfield & 0'Donnell .

ATTN: Mr. J. K. Tarpey Comitment Control Program j Public Service Company Building Coordinator '

L Rocm 900 Public Service Company of Colorado i l .550 15th Street 2420 W. 26th Ave. Suite 100-D l Denver, Colorado 80202 Denver, Colorado 80211 l

I Regional Administrator, Regior. IV l U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 l Arlington, Texas 76011 i

Chairman, Board of County Commissioners of Weld County, Colorado Greeley, Colorado 80631 l Regional Representative Radiation Programs Environmental Protection Agency i 1 Denver Place 999 18th Street, Suite 1300 Denver, Colorado '80202-2413

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