ML20149L264
| ML20149L264 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 02/21/1996 |
| From: | Berkow H NRC (Affiliation Not Assigned) |
| To: | Tuckman M DUKE POWER CO. |
| References | |
| TAC-M90566, NUDOCS 9602260035 | |
| Download: ML20149L264 (4) | |
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Mr. M. S. Tuckman February 21, 1996
'e Senior Vice President e
Nuclear Generation Duke Power Company P.O. Box 1006 Charlotte, NC 28201
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION - STEAM GENERATOR REPLACEMENT, CATAWBA NUCLEAR STATION, UNIT 1 (TAC NO. M90566)
Dear Mr. Tuckman:
On September 30, 1994, as supplemented on September 18, 1995, you submitted an application to change the' Technical Specifications (TS) for the Catawba Nuclear Station, Units 1 and 2 in support of tha replacement of the steam generators (SG) at Catawba Unit l'.
The proposed TS changes would revise the low-low and high-high steam, generator water level setpoints, the reactor coolant system volume, and' the nominal ~ average reactor coolant system temperature.
It would also delete delete reference to repair methods, which are not applicable to the replacement st'eam generators and update topical report references in TS 6.9.
As a result of our review to date, we have identified a need for additional information as set forth in the Enclosure.
l Since_ rely, Original signed by V. Nerses for:
Herbert N. Berkow, Director Project Directorate 11-2
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Division of Reactor Projects - I/II N
Office of Nuclear Reactor Regulation 4
Docket Nos. 50-413 and 50-414
Enclosure:
Request For Additional Information cc w/ encl:
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i February 21, 1996 J
Mr. M. S. Tuckman Senior Vice President Nuclear Generation Duke Power Company i
P.O. Box 1006 Charlotte, NC 28201
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION - STEAN GENERATOR REDLAC CATAWBA NUCLEAR STATION, UNIT I (TAC NO. M90566)
Dear Mr. Tuckman:
On September 30, 1994, as supplemented on September 18, 1995, you submitted an application to change the Technical Specifications (TS) for the Catawba Nuclear Station, Units 1 and 2 in support of the replacement of the steam i
generators (SG) at Catawba Unit 1.
The proposed TS changes would revise the low-low and high-high steam generator water level setpoints, the reactor coolant system volume, and the nominal average reactor coolant system temperature.
It would also delete reference to repair methods, which are not applicable to the replacement steam generators and update topical report references in TS 6.9.
As a result of our review to date, we have identified a need for additional information as set forth in the Enclosure.
Sincerely, Herbert N. Berkow, Direc or Project Directorate II-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation Docket Nos. 50-413 and 50-414
Enclosure:
Request For Additional Information cc w/ encl:
See next page
Duke Power Company Catawba Nuclear Station cc:
Mr. Z. L. Taylor North Carolina Electric Membership Regulatory Compliance Manager Corporation Duke Power Company P. O. Box 27306 4800 Concord Road Raleigh, North Carolina 27611 York, South Carolina 29745 Senior Resident Inspector Mr. Paul R. Newton Route 2, Box 179 N Duke Power Company, PB05E York, South Carolina 29745 422 South Church Street Charlotte, North Carolina 28242-0001 Regional Administrator, Region II U. S. Nuclear Regulatory Commission J. Michael McGarry, III, Esquire 101 Marietta Street, NW. Suite 2900 i
Winston and Strawn Atlanta, Georgia 30323
)
1400 L Street, NW I
Washington, DC 20005 Max Batavia, Chief Bureau of Radiological Health North Carolina Municipal Power South Carolina Department of Agency Number 1 Health and Environmental Control j
1427 Meadowwood Boulevard 2600 Bull Street P. O. Box 29513 Columbia, South Carolina 29201 Raleigh, North Carolina 27626-0513 Mr. G. A. Copp Mr. T. Richard Puryear Licensing - EC050 Nuclear Technical Services Manager Duke Power Company Westinghouse Electric Corporation 526 South Church Street Carolinas District Charlotte, North Carolina 28242-0001 2709 Water Ridge Parkway, Suite 430 Charlotte, North Carolina 28217 Saluda River Electric P. O. Box 929 County Manager of York County Laurens, South Carolina 29360 York County Courthouse York, South Carolina 29745 Ms. Karen E. Long Assistant Attorney General Richard P. Wilson, Esquire North Carolina Department of Justice 1
Assistant Attorney General P. O. Box 629 South Carolina Attorney General's Raleigh, North Carlina 27602 Office I
P. O. Box 11549 Elaine Wathen, Lead REP Planner Columbia, South Carolina 29211 Division of Emergency Management 116 West Jones Street Piedmont Municipal Power Agency Raleigh, North Carolina 27603-1335 121 Village Drive Greer, South Carolina 29651 Mr. William R. McCollum Site Vice President Dayne H. Brown, Director Catawba Nuclear Station Division of Radiation Protection Duke Power Company N.C. Department of Environment, 4800 Concord Road Health and Natural Resources York, South Carolina 29745 P. O. Box 27687 Raleigh, North Carolina 27611-7687 t
., b REQUEST FOR ADDITIONAL INFORMATLQJi STEAM GENERATOR REPLACEMENT 1.
With respect to the proposed changes in steam generator (SG) low-low and high-high water level setpoints and the change in nominal average reactor coolant temperature, and the change in reactor coolant system volume, please identify which transients and accidents are affected from each TS change.
Identify the most limiting transient or accident for the specified TS change.
Provide supporting analysis results for the limiting case demonstrating how it meets the acceptance criteria with respect to system pressure and fuel performance (DNB, etc).
2.
SR t.4.5.4.b, TS page 3/4 4-16a The standard TS reads as follows: "The steam generator shall be determined OPERABLE after completing the corresponding actions (plug all tubes exceeding the plug limit and all tubes containing through-wall cracks) required by Table 4.4-2."
Duke Power did not include the phrase in the parentheses in its submittal. The staff believes that the phrase in the parentheses should be restored to the Catawba TS because the replaced steam generators are not exempt from this requirement.
3.
BASES 3/4.4.5, TS page B 3/4 4-3a Duke Power should delete the sentence that reads as follows: " Tubes experiencing outer diameter stress corrosion cracking within the thickness of the tube support plates are plugged or repaired by the criteria of 4.4.5.4.a.13."
This statement is no longer applicable to Catawba Unit I after the replacement of the steam generators.
ENCLOSURE
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