ML19320D307
| ML19320D307 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek, Callaway, Sterling  |
| Issue date: | 06/26/1980 |
| From: | Robert Carlson NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Petrick N STANDARDIZED NUCLEAR UNIT POWER PLANT SYSTEM |
| References | |
| NUDOCS 8007210231 | |
| Download: ML19320D307 (1) | |
Text
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TW m*%o, UNITED STATES 8
NUCLEAR REGULATORY COMMISSION o
5 j
REGION 1 631 PARK AVENUE 4,*****,&,c KING OF PRUSSIA, PENNSYLVANIA 19406 Docket Nos. 50-482 50-483 50-485 50-486 SNVPPS ATTN:
Mr. Nicholas A. Petrick Executive Director 5 Choke Cherry Road Rockville, Maryland 20850 Gentlemen:
Subject:
Centrifugal Charging Pump Operation Following Secondary Side High Energy Line Rupture (Your letter SLNRC 80-28 of June 6, 1980)
Thank you for your letter,) referenced above, which forwarded an interim report pursuant to 10 CFR 50.55(e regardingthesubjectmatter.
Your report will be reviewed and evaluated, and should we require additional information concerning this matter, we will contact you.
Your cooperation with us is appreciated.
Sincerely,
$k R. I. Carlson, Chief Reactor Construction and Engineering Support Branch cc:
J. E. Arthur, Chief Engineer, RG&E C. R. Anderson, Manager, QA, RG&E Lex K. Larson, Escuire Gerald Charnoff, Esquire i
8007210 2.3/
j'**f SNUPPS Standardised Nuclear Unit Power Mont System 5 Choke Cherry Road Nicholas A. Petrick v
land 20850 Executive Director June 6, 1980 SLNRC 80 28 FILE: 0491.10.2 SUBJ : ' ' Centrifugal ' Charaing Pump Operation Following Secondary
' Side High Eneray Line RuDture
- r. Boyce Grier Director, Region I U.S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pennsylvania 19406 Docket Nos.: STN 50-482, STN 50-483, STN E0-485, STN 50-486 Ref: Westinghouse letter (T.M. Anderson), NS-TMA-2245, to USNRC (V. Stello), dated May 8,1980, same subject
Dear Mr. Grier:
On May 8,1980, SNUPPS informed the Nuclear Regulatory Commission, Region I Office of Inspection and Enforcement, of a potential deficiency in-vol'ing centrifugal charging pump operation following a secondary side line rupture. The information was communicated by telephone to Mr.
Richard McGaughy of your staff pursuant to 10 CFR 50.55(e).
The referenced letter prcvide'd detailed information on the deficiency, described plant-specific calculations that are required, and discussed possible corrective modifications.
The SNUPPS plants will have qualified, saSty-related pressurizer power-operated relief valves. Thus the pro-blem described by Westinghouse does not appear to be applicable to SNUPPS.
How("ar, additional evaluation is required on the responaa of a SNUPPS olant to the transient described in the referenced letter.
This evaluation is expected to be complete in about one month and the NRC will be infonn-ed of the results.
Very truly yours,
-e?t <st flicholas A. Petrick RLS/jdk cc: Mr. James G. Keppler, Director, Region III, USNRC Mr. Karl V. Seyfrit, Director, Region IV,USNRC Mr. Victor Stello Jr., Director, Office of Inspection and Enforcement, USNRC, Washington, D.C. 20555 a
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