ML20198D059

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Forwards 908813, Final Rept - Fort St Vrain CRD & Orificing Assembly High Temp Functional Test. No Failure of Assembly Component Experienced
ML20198D059
Person / Time
Site: Fort Saint Vrain Xcel Energy icon.png
Issue date: 05/16/1986
From: Warembourg D
PUBLIC SERVICE CO. OF COLORADO
To: Berkow H
Office of Nuclear Reactor Regulation
Shared Package
ML20198D062 List:
References
P-86374, TAC-61601, NUDOCS 8605230125
Download: ML20198D059 (2)


Text

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2420 W. 26th Avenue, Suite 1000, Denver, Colorado 80211 May 16, 1986 Fort St. Vrain Unit No. 1 P-86374 Director of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Attn: Mr. H.N. Berkow, Director Standardization and Special Projects Directorate Docket No. 50-267

SUBJECT:

CRDM Assembly

REFERENCES:

1) PSC Letter, Lee to Johnson, dated January 30, 1985 (P-85032)
2) PSC Letter, Warembourg to Butcher, dated November 5, 1985 (P-85380)
3) PSC Letter, Brey to Berkow, dated December 12, 1985 (P-85463)
4) PSC Letter, Warembourg to Berkow, dated December 19, 1985 (P-85478)
5) PSC Letter, Warembourg 8605230125 060516 7 to Berkow, dated PDR ADOCK 0500 January 30, 1986 P

(P-86071)

Dear Mr. Berkow:

PSC has committed to perform a high temperature (300 degrees Fahrenheit) test of a CRDM assembly, and to advise the NRC of the results of those tests (References 1 and 2). The NRC was advised of the preliminary results of the test in Reference 5.

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P-86374 Page 2 May 16, 1986 This letter fulfills our commitment to submit a final test report (copy attached) on the 300 degree Fahrenheit high temperature test on a CRDM assembly. The actual testing was completed on January 22, 1986, and as indicated in our preliminary report, the CRDM assembly performed the required operation of scram, operation of the CRD drive motor, and operation of the orifice valve drive motor, without incident. The position indication switches and potentiometers were monitored and functioned throughout the test. No failure of any CRDM assembly component was experienced.

If you have any questions concerning this subject, please contact Mr.

M.H. Holmes at (303) 480-6960.

Very truly yours, bD. W.

/YWaremboug,

/YM uM&eager Nuclear Engineering Division '

DWW/JRR:jmt Attachment i

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