ML20151Z599
| ML20151Z599 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 09/16/1998 |
| From: | Hall J NRC (Affiliation Not Assigned) |
| To: | Horn G NEBRASKA PUBLIC POWER DISTRICT |
| Shared Package | |
| ML20151Z604 | List: |
| References | |
| GL-97-04, GL-97-4, IEB-95-002, IEB-95-2, IEB-96-003, IEB-96-3, TAC-M93897, NUDOCS 9809220038 | |
| Download: ML20151Z599 (4) | |
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t UNITED STATES 8
NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20666 4 001 9
September 16, 1998 Mr. G. R. Hom Sr. Vice President of Energy Supply
^ Nebraska Public Power District 141415th Street Columbus, NE 68601
SUBJECT:
RESPONSE TO NRC BULLETIN 95-02," UNEXPECTED CLOGGING OF A RESIDUAL HEAT REMOVAL (RHR) PUMP STRAINER WHILE OPERATING IN SUPPRESSION POOL COOLING MODE," COOPER NUCLEAR STATION (TAC NO. M93897)
Dear Mr. Hom:
By letter dated November 16,1995, the Nebraska Public Power District (NPPD) submitted its response to NRC Bulletin 95-02, " Unexpected Clogging of a Residual Heat Removal (RHR)
Pump Strainer While Operating in Suppression Pool Cooling Mode," for the Cooper Nuclear
' Station. The enclosure provides the staff's evaluation of the NPPD's response.
NRC Bulletin 95-02 requested that licensees review the operability of their emergency core cooling system and other pumps which draw suction from the suppression pool while performing their safety function. The licensees' evaluations should be based on suppression pool cleanliness, suction strainer cleanliness, and the effectiveness of their foreign material exclusion practices. In addition, licensees were requested to implement appropriate procedural modifications and other actions (e.g., suppression pool cleaning) as necessary to minimize l
foreign material in the suppression pool, drywell, and containment. Licensees were also I
requested to verify their operability evaluations through appropriate testing and inspection. In its response to the bulletin, dated November 16,1995, NPPD described its plans to comply with all of the requested actions. The staff has concluded that NPPD's response to NRC Bulletin 95-02 is acceptable for the Cooper Nuclear Station.
The staff's review of related issues discussed in NRC Bulletin 96-03, " Potential Plugging of Emergency Core Cooling Suction Strainers by Debris in Boiling Water Reactors," dated May 6, 1996; and in NRC Generic Letter 97-04, " Assurance of Sufficient Net Positive Suction Head for 9809220038 980916 i
PDR ADOCK 05000298 i
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- - i, g.- i Mr. G.~ R. Horn ! - Emergency Core Cooling and Containment Heat Removal Pumps," dated October 7,1997, will ' be the subject of separate correspondence. ' If you have any questions, please contact me at (301) 415-1336.- l Sincerely, ORIGINAL SIGNED BY: James R. Hall,' Senior Project Manager' Project Directorate IV-1 Division of Reactor Projects lil/IV Office of Nuclear Reactor Regulation Docket No. 50-298
Enclosure:
Safety Evaluation cc w/ encl: See next page DISTRIBUTION-M. IPOBLIC PD4-1 r/f - i C.Hawes ACRS T. Gwynn, RIV J. Hall ~ OGC (15B18) 1 E. Adensam(EGA1) J.Hannon R; Elliott J. Hickman Document Name: COO 93897.LTR' PD[k4-1 OFC PM/PD4.-1,, LA/PD4-1 LPM /PD3-2! LTR/SCSB NAME JHall/v[' CHAW JHickma@*RElliott b #ahon DATE T/[LV98 $ /10 /98 - 7/h/98 i/1798 O kh8 OFFICIAL RECORD COPY / l i
i e 6 Mr. G. R. Horn, i 1 Emergency Core Cooling and Containment Heat Rernoval Pumps," dated October 7,1997, will j be the subject of separate correspondence, if you have any questions, please contact me at (301)415-1336. Sincerely, j O mn i ames R. Hall, Senior Project Manager Project Directorate IV-1 L Division of Reactor Projects lil/IV i Office of Nuclear Reactor Regulation Docket No. 50-298
Enclosure:
Safety Evaluation cc w/ encl: See next page I' i i~ l l[y l: fl l
o t
- Mr. G. R. Horn
.c Nebraaka Public Power District Cooper Nuclear Station . cc: Mr. John R McPhail, General Counsel: Lincolo Electric System Nebraska Public Power District. ATTN: Mr. Ron Stoddard i P. O. Box 499 ~- 1040 0 Street Columbus, NE 68602-0499-Box 80869 l Lincoln, NE. 68501 l Nebraska Public Power District ATTN: Mr. J. H. Swailes7 MidAmerican Energy. l Vice President of Nuclear Energy ATTN: Dr. William D. Leech, Manager-Nuclear j P. O. Box 98 ~ 907 Walnut Street Brownville, NE 68321 P. O. Box 657 - Des Moines, IA 50303-0657 - . Randolph Wood, Director Nebraska Department of Environmental Nebraska Public Power District Control ATTN: Mr. B L. Houston, Nuclear P. O. Box 98922 _ Lincoln, NE. 68509-8922. Licensing & Safety Manager. i P. O. Box 98 i Brownville, NE 68321 Mr. Larry Bohlken, Chairman l Nemaha County Board of Commissioners Nemaha County Courthouse 1824 N Street - - Aubum, NE 68305 1 . Senior Resident inspector. j U.S. Nuclear Regulatory Commission P. O. Box 218 Brownville, NE 68321 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 1000 Arlington, TX-76011 . Ms. Cheryl Rogers, LLRW Program Manager Division of Radiological Health Nebraska Department of Health ~j 301 Centennial Mall South P. O. Box 95007 - Lincoln, NE 68509-5007 .Mr. Ronald A. Kucera, Department Director .' of intergovemmental Cooperation Department of Natural Resources P.O. Box 176 Jefferson City, MO 65102 _}}