ML15112A576
| ML15112A576 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 02/09/1998 |
| From: | Labarge D NRC (Affiliation Not Assigned) |
| To: | Mccollum W DUKE POWER CO. |
| References | |
| TAC-M99487, TAC-M99488, TAC-M99489, NUDOCS 9802240232 | |
| Download: ML15112A576 (4) | |
Text
February 9, 1998 Mr. W. R. McCollum Vice President, Oconee Site Duke Energy Corporation P. O. Box 1439 Seneca, SC 29679
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION - EMERGENCY CONDENSER CIRCULATING WATER SYSTEM (TAC NOS. M99487, M99488, AND M99489)
Dear Mr. McCollum:
During our review of your submittal dated August 28, 1997, related to proposed Technical Specification changes to incorporate modifications to the Emergency Condenser Circulating Water System, the staff has determined that additional information is necessary to complete its review. In order to maintain our review schedule, we request that you respond to the enclosed request for additional information within 30 days from the date of this letter.
Sincerely, ORIGINAL SIGNED BY:
David E. LaBarge, Senior Project Manager Project Directorate 11-2 Division of Reactor Projects - 1/Il Office of Nuclear Reactor Regulation Docket Nos. 50-269, 50-270, and 50-287
Enclosure:
As stated cc w/encl: See next page Distribution:
0b0ket!Filery HBerkow ACRS PUBLIC LBerry JJohnson, RII PD 11-2 Rdg DLaBarge COgle, RII JZwolinski OGC DOCUMENT NAME:. G:\\OCONEE\\OCO86027.RAI To receive a copy of this document, indicate in the box:
"C" = Copy without attachment/enclosure "E" = Copy with attachmentlenclosure "N" = No copy
/
7 OFFICE PDII-2/
PDII-2/
JCJ P NAME DLaB e:cn LBerry HMe DATE 2/
1/98
/98 '
/ 198 OFFICIAL RECORD COPY 9802240232 980209
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PDR ADOCK 05000269 P
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 February 9, 1998 Mr. W. R. McCollum Vice President, Oconee Site Duke Energy Corporation P. 0. Box 1439 Seneca, SC 29679
SUBJECT:
REQUEST FOR ADDITIONAL INFORMATION - EMERGENCY CONDENSER CIRCULATING WATER SYSTEM (TAC NOS. M99487, M99488, AND M99489)
Dear Mr. McCollum:
During our review of your submittal dated August 28, 1997, related to proposed Technical Specification changes to incorporate modifications to the Emergency Condenser Circulating Water System, the staff has determined that additional information is necessary to complete its review. In order to maintain our review schedule, we request that you respond to the enclosed request for additional information within 30 days from the date of this letter.
Sincerely, David E. LaBarge, Senior Project Manager Project Directorate 11-2 Division of Reactor Projects - 1/Il Office of Nuclear Reactor Regulation Docket Nos. 50-269, 50-270, and 50-287
Enclosure:
As stated cc w/encl: See next page
Oconee Nuclear Station cc:
Mr. Paul R. Newton Mr. J. E. Burchfield Legal Department (PBO5E)
Compliance Manager Duke Energy Corporation Duke Energy Corporation 422 South Church Street Oconee Nuclear Site Charlotte, North Carolina 28242 P. 0. Box 1439 Seneca, South Carolina 29679 J. Michael McGarry, III, Esquire Winston and Strawn Ms. Karen E. Long 1400 L Street, NW.
Assistant Attorney General Washington, DC 20005 North Carolina Department of Justice Mr. Robert B. Borsum P. 0. Box 629 Framatome Technologies Raleigh, North Carolina 27602 Suite 525 1700 Rockville Pike L. A. Keller Rockville, Maryland 20852-1631 Manager - Nuclear Regulatory Licensing Manager, LIS Duke Energy Corporation NUS Corporation 526 South Church Street 2650 McCormick Drive, 3rd Floor Charlotte, North Carolina 28242-0001 Clearwater, Florida 34619-1035 Mr. Richard M. Fry, Director Senior Resident Inspector Division of Radiation Protection U. S. Nuclear Regulatory North Carolina Department of Commission Environment, Health, and 7812B Rochester Highway Natural Resources Seneca, South Carolina 29672 3825 Barrett Drive Raleigh, North Carolina 27609-7721 Regional Administrator, Region II U. S. Nuclear Regulatory Commission Atlanta Federal Center 61 Forsyth Street, S.W., Suite 23T85 Atlanta, Georgia 30303 Max Batavia, Chief Bureau of Radiological Health South Carolina Department of Health and Environmental Control 2600 Bull Street Columbia, South Carolina 29201 County Supervisor of Oconee County Walhalla, South Carolina 29621
Request for Additional Information Upgraded Emergency Condenser Circulating Water (ECCW) System
(
Reference:
Duke Energy Corporation ECCW amendment submittal dated August 28. 1997) 1.
On page 7 of the technical justification section, a study/calculation was performed to assess the impact of the additional electrical loads on the capacity of the emergency power system.
- a.
What are the assumptions that are used for this study/calculation? Discuss why each of these assumptions is considered valid/conservative.
- b. What findings from this study/calculation are used to conclude that the emergency power system is able to support the additional electrical loads with no significant impact on the power distribution system?
- 2.
Page 12 of the technical justification section states that the cable derating also assures that the cables and fault protection are coordinated such that faults are cleared and cables are protected.
Discuss this statement as it applies to specific cases.
- 3.
Page 14 of the technical justification section discusses a solenoid valve that is located in the common Essential Siphon Vacuum (ESV) seal supply piping section downstream of each ESV pump's seal supply cross-connect valve.
Where are these solenoid valves powered from and are they deenergized to open or energized to open?
Enclosure