ML20236T410
| ML20236T410 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 07/22/1998 |
| From: | Hernan R NRC (Affiliation Not Assigned) |
| To: | Scalice J TENNESSEE VALLEY AUTHORITY |
| References | |
| GL-97-04, GL-97-4, TAC-MA0043, TAC-MA0044, TAC-MA43, TAC-MA44, NUDOCS 9807280167 | |
| Download: ML20236T410 (4) | |
Text
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UNITE 3 STATES s
NUCLEAR RESULATCRY CEMMISSION h
WASHINGTON, D.C. 30006 4001 July 22, 1998 Mr. J. A. Scalice Chief Nuclear Officer and Executive Vice President Tennessee Valley Authority 6A Lookout Place 1101 Market Street Chattanooga, TN 37402-2801
SUBJECT:
COMPLETION OF LICENSING ACTION FOR GENERIC LETTER 97 SEQUOYAH NUCLEAR PLANT, UNITS 1 AND 2 (TAC NOS. MA0043 AND MA0044)
Dear Mr. Scalice:
The U.S. Nuclear Regulatory Commission (NRC) issued Generic Letter (GL) 97-04, " Assurance of Sufficient Net Positive Suction Head for Emergency Core Cooling and Containment Heat Removal Pumps," to all holders of operating licenses or construction permits on October 7,1997. The NRC issued GL 97-04 to confirm the adequacy of the net positive suction head (NPSH) available for emergency core cooling (including core spray and decay heat removal) and containment heat removal pumps under all design-basis accident scenarios.
In GL 97-04, the NRC staff specifically requested that licensees provide the information outlined below for each of their facilities.
- 1. Specify the general methodology used to calculate the head loss associated with the ECCS suction strainers.
- 3. Specify whether the current design-basis NPSH analysis differs from the most recent analysis reviewed and approved by the NRC for which a safety evaluation was issued.
- 4. Specify whether containment overpressure (i.e., containment pressure above the vapor pressure of the sump or suppression pool fluid) was credited in the calculation of available NPSH. Specify the amount of overpressure needed and the minimum overpressure available.
- 5. When containment overpressure is credited in the calculation of available NPSH, confirm that an appropriate containment pressure analysis was done to establish the minimum containment pressure.
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Mr. J. A. Scalice In response to GL 97-04, you provided letters dated November 4,1997, and December 22,1997, for the Sequoyah Nuclear Plant, Units 1 and 2. These submittals provided the information requested by GL 97-04. The staff has reviewed your response and has concluded that all 4
requested information has been provided; therefore, we consider GL 97-04 to be closed for your facilities. Thank you for your prompt and complete response.
If you have any questions regarding this matter, please contact me at 301-415-2010.
I Sincerely, Original signed by Ronald W. Hernan, Senior Project Manager Project Directorate ll-3 Division of Reactor Projects - 1/11 i
Office of Nuclear Reactor Regulation j
Docket Nos. 50-327 and 50-328 cc: See next page j
DISTRIBUTION:
Docket File PUBLIC i
SON Reading File JZwolinski ACRS OGC DSkay, Lead PM JKudrick, NRR KKavanagh, NRR LPlisco, Region ll DOCUMENT NAME: G:\\sqn\\974ctose.ltr Te receive a copy of this document. Indicate in the box: "C" = Copy without enclosures "E" = Cop r with er "N" = No copy I -- OFFICE PD!l-3/PM q PDil-3/LA G
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f Mr. J. A. Scalice !
In response to GL 97-04, you provided letters dated November 4,1997, and December 22,1997, for the Sequoyah Nuclear Plant, Units 1 and 2. These submittals provided the information j
requested by GL 97-04. The staff has reviewed your response and has concluded that all requested information has been provided; therefore, we consider GL 97-04 to be closed for your l
facilities. Thank you for your prompt and complete response.
If you have any questions regarding this matter, please contact me at 301-415-2010.
Sincerely, uL-
?rbpkw Ronald W. Hernan, Senior Project Manager Project Directorate 11-3 Division of Reactor Projects -l/ll Office of Nuclear Reactor Regulation Docket Nos. 50-327 and 50-328 cc: See next page i
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Mr. J. A. Scalice SEQUOYAH NUCLEAR PLANT l
Tennessee Valley Authority i
cc:
Senior Vice President Mr. Pedro Sales, Manager Nuclear Operations Licensing and Industry Affairs Tennessee Valley Authority Sequoyah Nuclear Plant 6A Lookout Place Tennessee Valley Authority i
1101 Market Street P.O. Box 2000 Chattanooga, TN 37402-2801 Soddy Daisy, TN - 37379 l-Mr. Jack A. Bailey Mr. J. T. Herron, Plant Manager Vice President Sequoyah Nuclear Plant Engineering & Technical Services Tennessee Valley Authority Tennessee Valley Authority P.O. Box 2000 6A Lookout Place Soddy Daisy, TN 37379 1101 Market Street Chattanooga, TN 37402-2801
- Regional Administrator U.S. Nuclear Regulatory Commission -
Mr. Masoud Bajestani Region il Site Vice President 61 Forsyth Street, SW.
Sequoyah Nuclear Plant Suite 23T85 Tennessee Valley Authority Atlanta, GA 30303-3415 P.O. Box 2000 Soddy Daisy, TN 37379 Mr. Melvin C. Shannon Senior Resident inspector General Counsel Sequoyah Nuclear Plant Tennessee Valley Authority.
U.S. Nuclear Regulatory Commission
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2600 Igou Ferry Road j
400 West Summit Hill Drive Soddy Daisy, TN 37379 Knoxville, TN 37902 Mr. Michael H. Mobley, Director Mr. Raul R. Baron, General Manager TN Dept. of Environment & Conservation Nuclear Assurance Division of Radiological Health
. Tennessee Valley Authority '
3rd Floor, L and C Annex SM Lookout Place 401 Church Street 1101 Market Street -
Nashville, TN 37243-1532 Chattanooga, TN 37402-2801 County Executive Mr. Mark J. Burrynski, Manager Hamilton County Courthouse Nuclear Licensing Chattanooga, TN 37402-2801 Tennessee Valley Authority j
4X Blue Ridge.
1101 Market Street -
l Chattanooga, TN 37402-2801 l
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