ML20236U565
| ML20236U565 | |
| Person / Time | |
|---|---|
| Site: | Fort Saint Vrain  |
| Issue date: | 11/20/1987 |
| From: | Heitner K Office of Nuclear Reactor Regulation |
| To: | Robert Williams PUBLIC SERVICE CO. OF COLORADO |
| Shared Package | |
| ML20236U568 | List: |
| References | |
| TAC-65992, NUDOCS 8712030167 | |
| Download: ML20236U565 (2) | |
Text
HOV&0 W Docket No. 50-267 Mr. R. O. Williams, Jr.
Vice President, Nuclear Operations Public Service Company of Colorado P. O. Box 840 Denver, Colorado 80201-0840
Dear Mr. Williams:
SUBJECT:
INTERIM SAFETY EVALUATION ON HELIUM CIRCULATOR S/N C-2101 DAMAGE AND COMMITMENTS BY LICENSEE FOR CONTINUING OPERATION OF FORT ST. VRAIN NUCLEAR GENERATING STATION (TAC N0. 65992) i We have reviewed the preliminary engineering evaluation submitted by the Public Service Company of Colorado on September 11, 1987, relative to the damage sus-J tained by helium circulator S/N C-2101.
We have also reviewed the commitments
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to support continued operation of the Fort St. Vrain Nuclear Generating Station i
in your letter of September 21, 1987 (P-87327).
l We conclude from our review that the basic cause of helium circulater S/N C-2101 damage is generic, and that multiple bolt failure is necessary before similar damage would occur in other circulators.
However, the commitments of i
the Public Service Company of Colorado to demonstrate safety performance and i
operability of the installed helium circulators through continuous monitoring and inservice inspection programs justify continued operation of Fort St. Vrain.
It is understood that the reactor will be shutdown until corrective actions are completed in the event similar failure is detected in the installed circulators.
Further, investigation of the failurr will continue until a final engineering report, identifying the corrective actions considered approp-iate, is submitted 3
to the Commission.
I l
Our interim Safety Evaluation is er, closed.
I Sincerely,
>d i
Kenneth L. Heitner, Project Manager Project Directorate - IV l
Division of Reactor Projects - III, IV, V and Special Projects
Enclosure:
As stated cc w/ enclosure:
See next page DISTRIBUTION Docket File NRC PDR Local PDR PD4 Reading DR4A J. Calvo P. Noonan K. Heitner OGC-Bethesda E. Jordan J. Partlow ACRS (10)
PD4 Plant File I'
PD4/D /JV.-
PD4/LAf PD4/PM PNoonaMg KHeitner: sr JCalvo 11/6/87 11/14/87 11/s/87 8712030167 G71120 PDR ADOCK 05000267 P
- b Mr. R.' O. Williams, Jr.
Public. Service Company of Colorado Fort St. Vrain cc:
Mr. ' D. W. Warembourg, Manager Albert J. Hazle, 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, 14/159A Mr. R. O. Williams,. Jr., Acting Manager GA Technologies, Inc.
Nuclear Production Division 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 Fuel Division Mr. P. F. Tomlinson, Manager Public Service Company of Colorado Quality Assurance Division P. O. Box 840 Public Service Company of Colorado Denver, Colorado 80201-0840 16805 Weld County Road 19-1/2 Platteville, Colorado 80651 Senior Resident Inspector U.S. Nuclear Regulatory Commission Mr. R. F. Walker P.'O. Box 640 Public Service Company of Colorado Platteville, Colorado 80651 Post Office Box 840 Kelley, Stansfield & 0'Donnell Public Service Company Building Commitment Control Program l
Room 900 Coordinator l
550 15th Street Public Service Company of Colorado Denver, Colorado 80202 2420 W. 26th' Ave. Suite 100-0 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, Texas 76011 Chairman, Board of County Commissioners
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of Weld County, Colorado Greeley, Colorado 80631 Regional Representative I
Radiation Programs Environmental Drotection Agency 1 Denver Place 999 18th Street, Suite 1300 Cenver, Colorado 80202-2413 1
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