ML20196C017
| ML20196C017 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 11/27/1998 |
| From: | Tam P NRC (Affiliation Not Assigned) |
| To: | Gordon Peterson DUKE POWER CO. |
| Shared Package | |
| ML20196C022 | List: |
| References | |
| TAC-MA3415, TAC-MA3416, NUDOCS 9812010234 | |
| Download: ML20196C017 (4) | |
Text
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Mr. Gary R. P:t:rson November 27, 1998 Sita Vic] Prcsidsnt Citawb2 Nucinr St: tion Duke Energy Corporation 4800 Concord Road York, South Carolina 29745-9635
SUBJECT:
CATAWBA NUCLEAR STATION - CAllBRATION TOLERANCES FOR TRIP SETPOINTS IN THE TECHNICAL SPECIFICATIONS (TAC MA3415 AND MA3416)
Dear Mr. Peterson:
By letter dated August 20,1998, Duke Energy Corporation (DEC) requested clarification of the staff's position regarding DEC's current practice of calibrating instrument trip setpoints within a two-sided tolerance band (t). This practice is different from that specified in the Catawba Technical Specifications (TS), Tables 2.2-1 and 3.3-4 for the Reactor Trip System, and the Engineered Safety Feature Actuation System. These tables require that the trip setpoints be set "5" (less than or equal to) or ">" (greater than or equal to) the data specified in the Trip Setpoint column.
]
l DEC stated, in a letter dated September 30,1998, that its existing setpoint calculations account for the two-sided calibration tolerances on trip setpoints. DEC also stated that the two-sided tolerance on the setpoint calibration is also used in the Standard Technical Specifications. Tha staff concludes that the current calibration methodology poses no safety concern and details of its conclusions are provided in the enclosed Safety Evaluation.
This completes the staff's effort on DEC's submittals cited above.
Sincerely, Ori_ginal signed ty Peter S. Tam, Senior Fypj'ect Manager Project Directorate ll-2 Division of Reactor Projects - 1/11 Office of Nuclear Reactor Regulation Docket Nos. 50-413 and 50-414
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Enclosure:
Safety Evaluation cc w/ encl: See next page
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,o November 27, 1998 Mr. Gary R. Peterson Cite Vice President Catawba Nuclear Station Duke Energy Corporation 4800 Concord Road York, South Carolina 29745-9635
SUBJECT:
CATAWBA NUCLEAR STATION - CAllBRATION TOLERANCES FOR TRIP SETPOINTS IN THE TECHNICAL SPECIFICATIONS (TAC MA3415 AND MA3416)
Dear Mr. Peterson:
By letter dated August 20,1998, Duke Energy Corporation (DEC) requested clarification of the staffs position regarding DEC's current practice of calibrating instrument trip setpoints within a two-sided tolerance band (1). This practice is different from that specified in the Catawba Technical Specifications (TS), Tables 2.2-1 and 3.3-4 for the Reactor Trip System, and the Engineered Safety Feature Actuation System. These tables require that the trip setpoints be set "5" (less than or equal to) or ">" (greater than or equal to) the data specified in the Trip Setpoint column.
DEC stated, in a let'er dated September 30,1998, that its existing setpoint calculations account for the two-sided calibration tolerances on trip setpoints. DEC also stated that the two-sided tolerance on the setpoint calibration is also used in the Standard Technical Specifications. The staff concludes that the current calibration methodology poses no safety concern and details of its conclusions are provided in the enclosed Safety Evaluation.
This completes the staffs effort on DEC's submittals cited above.
Sincerely,
[
M Peter S. Tam, Senior Project Manager Project Directorate ll-2 Division of Reactor Projects - 1/11 l
Office of Nuclear Reactor Regulation Docket Nos. 50-413 and 50-414 i
Enclosure:
Safety Evaluation cc w! encl: See next page i
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Catawba Nuclear Station cc:.
l Mr. Gary Gilbert North Carolina Electric Membership Regulatory Compliance Manager Corporation Duke Energy Corporation P. O. Box 27306 4800 Concord Road Raleigh, North Carolina 27611 York, South Carolina 29745 L
Senior Resident inspector l
Mr. Paul R. Newton U.S. Nuclear Regulatory Commission Legal Department (PBOSE) 4830 Concord Road I
Duke Energy Corporation York, South Carolina 29745 I
422 South Church Street l'
Charlotte, North Carolina 28201-1006 Regional Administrator, Region II l
U. S. Nuclear Regulatory Commission J. Michael McGarry, Ill, Esquire Atlanta Federal Center Winston and Strawn 61 Forsyth Street, S.W., Suite 23T85 l
1400 L Street, NW Atlanta, Georgia 30303 Washington, DC 20005 Virgil R. Autry, Director North Carolina Municipal Power Division of Radioactive Waste Management Agency Number 1 Bureau of Land and Waste Management 1427 Meadowwood Boulevard Department of Health and Environmental P. O. Box 29513 Control Raleigh, North Carolina 27626 2600 Bull Street Columbia, South Carolina 29201-1708
. County Manager of York County York County Courthouse L. A. Keller York, South Carolina 29745 Manager-Nuclear Regulatory l
Ll:ensing Piedmont Municipal Power Agency Duke Energy Corporation 121 Village Drive 526 South Church Street t
Greer, South Carolina 29651 Charlotte, North Carolina 28201-1006 Ms. Karen E. Long Saluda River Electric l
Assistant Attomey General P. O. Box 929 North Carolina Department of Justice Laurens, South Carolina 29360 P. O. Box 629
~ Raleigh, North Carolina 27602 Mr. Steven P. Shaver Senior Sales Engineer
' Elaine Wathen, Lead REP Planner Westinghouse Electric Company Division of Emergency Management 5929 Carnegie Blvd.
116 West Jones Street Suite 500 Raleigh, North Carolina 27603-1335 Charlotta, North Carolina 28209 l'
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Catawba Nuclear Station cc:
Mr. T. Richard Puryear Owners Group (NCEMC)
Duke Energy Corporation 4800 Concord Road York, South Carolina 29745 Richard M. Fry, Director Division of Radiation Protection North Carolina Department of Environment, Health, and Natural Resources 3825 Barrett Drive Raleigh, North Carolina 27609-7721 1
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