ML18068A359
| ML18068A359 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 07/02/1998 |
| From: | Robert Schaaf NRC (Affiliation Not Assigned) |
| To: | Haskell N CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| References | |
| GL-97-04, GL-97-4, TAC-MA0021, TAC-MA21, NUDOCS 9807100199 | |
| Download: ML18068A359 (5) | |
Text
If Mr. N;:ithpn,L. Haskell e Director, Licensing Palisades Plant 27780 Blue Star Memorial Highway Covert, Ml 49043 July 2, 1998 *
SUBJECT:
PALISADES PLANT-REQUEST FOR ADDITIONAL INFORMATION RELATED TO NRC GENERIC LETTER 97-04 (TAC NO. MA0021)
Dear Mr. Haskell:
The staff issued Generic Letter (GL) 97-04, "Assurance of Sufficient Net Positive Suction Head for Emergency Core Cooling and Containment Heat Removal Pumps," on October 7, 1997. The generic letter requested that licensees provide information necessary to confirm the adequacy of the net positive suction head available for emergency core cooling and containment heat removal pumps. By letter dated January 5, 1998, Consumers Energy Company submitted its 90-day response to GL 97-04. The staff has reviewed Consumers Energy's response and has determined that additional information is necessary. Please provide the information in the enclosed request within 30 days from the date of this letter.
Should you have any questions regarding this request, please contact me at (301) 415-1312.
Docket No. 50-255 Sincerely, Original signed by:
Robert G. Schaaf, Project Manager Project Directorate 111-1 Division of Reactor Projects - Ill/IV Office of Nuclear Reactor Regulation
Enclosure:
Request for Additional Information cc w/encl: See next page
. DISTRIBUTION:
Docket File (50-255) B. Burgess, RI 11 PUBLIC E. Adensam (EGA 1)
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Mr. Nathan L. Haskell e Director, Licensing Palisades Plant 27780 Blue Star Memorial Highway Covert, MI 49043 July 2, 1998
SUBJECT:
PALISADES PLANT - REQUEST FOR ADDITIONAL INFORMATION RELATED TO NRG GENERIC LETTER 97-04 (TAC NO. MA0021)
Dear Mr. Haskell:
The staff issued Generic Letter (GL) 97-04, "Assurance of Sufficient Net Positive Suction Head for Emergency Core Cooling and Containment Heat Removal Pumps," on October 7, 1997. The generic letter requested that licensees provide information necessary to confirm the adequacy of the net positive suction head available for emergency core cooling and containment heat removal pumps. By letter dated January 5, 1998, Consumers Energy Company submitted its 90-day response to GL 97-04. The staff has reviewed Consumers Energy's response and has determined that additional information is necessary. Please provide the information in the enclosed request within 30 days from the date of this letter.
Should you have any questions regarding this request, please contact me at (301) 415-1312.
Docket No. 50-255 Sincerely, Original signed by:
Robert G. Schaaf, Project Manager Project Directorate 111-1 Division of Reactor Projects - 111/IV Office of Nuclear Reactor Regulation
Enclosure:
Request for Additional Information cc w/encl: See next page DISTRIBUTION:
Docket File (50-255) B. Burgess, Rill PUBLIC
- E. Adensam (EGA1)
OGG PDlll-1 Rdg DOCUMENT NAME: G:\\WPDOCS\\PALISADE\\PALA0021.RAI ACRS K. Kavanagh To receive a copy of this document, Indicate In the box: "C" =Copy without attachment/enclosure "E" = Copy with attach OFFICE PM:PD31 LA:PD31 NAME RGSchaaf:d CJamerson DA TE
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UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 Mr. Nathan L. Haskell Director, Licensing Palisades Plant 27780 Blue Star Memorial Highway Covert, Ml 49043 July 2, 1998
SUBJECT:
PALISADES PLANT-REQUEST FOR ADDITIONAL INFORMATION RELATED TO NRC GENERIC LETTER 97-04 (TAC NO. MA0021)
Dear Mr. Haskell:
The staff issued Generic Letter (GL) 97-04, "Assurance of Sufficient Net Positive Suction Head for Emergency Core Cooling and Containment Heat Removal Pumps," on October 7, 1997. The generic letter requested that licensees provide information neces~ary to confirm the adequacy of the net positive suction head available for emergency core cooling and containment heat removal pumps. By letter dated January 5, 1998, Consumers Energy Company submitted its 90-day response to GL 97-04. The staff has reviewed Consumers Energy's response and has determined that additional information is necessary. Please provide the information in the enclosed request within 30 days from the date of this letter.
Should you have any questions regarding this request, please contact me at (301) 415-1312.
Docket No. 50-255 Sincerely,
~ha~rof!!d Project Directorate 111-1 Division of Reactor Projects.- 111/IV Office of Nuclear Reactor Regulation
Enclosure:
Request for Additional Information cc w/encl: See next page
.I
~
Mr. Nathan L. Haskell Consumers Energy Company cc:
Mr. Thomas J. Palmisano Site Vice President Palisades Plant 27780 Blue Star Memorial Highway
.Covert, Michigan 49043 Mr. Robert A. Fenech, Sr Vice Pres Nuclear, Fossil, a*nd Hydro Operations Consumers Energy Company 212 West Michigan Avenue Jackson, Michigan 49201 M. I. Miller, Esquire Sidley & Austin 54th Floor One First National Plaza Chicago, Illinois 60603 Mr. Thomas A. McNish Vice President & Secretary Consumers Energy Company 212 West Michigan Avenue
- Jackson, Michigan 49201 Judd L. Bacon, Esquire Consumers Energy Company 212 West Michigan Avenue Jackson, Michigan 49201 Regional Administrator, Region Ill U.S. Nuclear Regulatory Commission 801 Warrenville Road Lisle, Illinois 60532-4351 Jerry Sarno Township Supervisor Covert Township 36197 M-140 Highway Covert, Michigan 49043 Office of the Governor P. 0. Box 30013 Lansing, Michigan 48909 Palisades Plant U.S. Nuclear Regulatory Commission Resident Inspector's Office Palisades Plant 27782 Blue Star Memorial Highway Covert, Michigan 49043 Drinking Water and Radiological Protection Division Michigan Department of Environmental Quality 3423 N. Martin Luther King Jr Blvd P. 0. Box 30630 CPH Mailroom Lansing, Michigan 48909-8130 Gerald Charnoff, Esquire Shaw, Pittman, Potts and Trowbridge 2300 N Street, N. W.
Washington DC 20037 Michigan Department of Attorney General Special Litigation Division 630 Law Building P.O. Box 30212 Lansing, Michigan 48909
- June 1998
REQUEST FOR ADDITIONAL INFORMATION REGARDING CONSUMERS ENERGY COMPANY'S RESPONSE TO NRC GENERIC LETTER 97-04 PALISADES NUCLEAR PLANT DOCKET NUMBER 50-255
- 1. In response to question 1, it is stated that "the containment water level, which determines hst, is conservatively assumed to be less than the predicted minimum water level following a large break LOCA." What is the predicted minimum water level, e.g;, the containment floor or an amount above the containment floor?
- 2. What is the maximum *sump temperature assumed in the NPSH analyses? Is subcooling credited?
- 3. In response to question 2, eight cases are evaluated. In Case 1, "Left Channel Failure of Safety Injection," the NPSH available is less than the NPSH required for a small amount of time. Why isn't this the design case for Palisades?
- 4. In response to question 3, it is stated that the current NPSH analyses were completed in November 1996 under 10 CFR 50.59. Discuss the changes made to the analyses between the current NPSH analyses and the previous NPSH analyses.
ENCLOSURE