ML20137X170
| ML20137X170 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 04/17/1997 |
| From: | Tam P NRC (Affiliation Not Assigned) |
| To: | Mccollum W DUKE POWER CO. |
| References | |
| TAC-M98040, TAC-M98041, NUDOCS 9704210174 | |
| Download: ML20137X170 (4) | |
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t UNITED STATES j
NUCLEAR REGULATORY COMMISSION 2
WASHINGTON, D.C. 20eeH001 8
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%,..... p April 17,1997 Mr. William R. McCollum Site Vice President 1
l Catawba Nuclear Station Duke Power Company 4800 Concord Road l
York, South Carolina 29745-9635
SUBJECT:
CATAWBA NUCLEAR STATION, UNITS 1 AND 2 - ALTERNATIVES TO REACTOR VESSEL AUGMENTED EXAMINATION REQUEST, RELIEF REQUESTS 97-01 AND 97-02 (TAC NOS. M98040 AND M98041) f
Dear Mr. McCollum:
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Pursuant to 10 CFR 50.55a(g)(6)(ii)(A)(5), you proposed alternatives to the j
augmented examination of the reactor pressure vessel by your letter dated February 18, 1997.
You stated that the required examination coverage of reactor vessel shell. welds specified in Item Bl.10 of Examination l
Category B-A, " Pressure Retaining Welds in Reactor Vessel," in Table IWB-2500-1 of subste. tion IWB of the 1989 Edition of the ASME Code,Section XI, could not be achieved due to the geometry of the weld and physical constraints that obstruct scanning from inside the vessel.
J The staff has reviewed your submittal, and found that additional information l
1s needed to complete the review:
(1)
Discuss the feasibility of examining each weld specified in Item B1.10 of Examination Category B-A from the outside surface of the vessel.
(2)
Provide dimensions of the largest indication (planar and/or linear) in the unexamined volume of each of the above welds found during the i
preservice inspection.
(3)
Confirm that the peak neutron fluence at.the end of the inspection interval for the shell weld will not exceed 10}p nozgle belt weld and the lower head to shell n/cm (E > 1 MeV) based on the test results of surveillance specimens or estimated analytically.
(4)
If the neutron fluence exceeds 10 n/ car (E > 1 MeV), provide the 17 adjusted reference nil ductility transition temperature at the end of the inspection interval for the welds and the heat-affected zones, which could not be examined for 90 percent of the volume, by using the methodology of Regulatory Guide 1.99, Revision 2.
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$hf 210062 1
9704210174 970417 PDR ADOCK 05000413 P
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William R. McCollum 2-April 17,1997
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' Please contact me at 301-415-1451 if you have any questions regarding this i
request for additional information.
Sincerely, 4
i ORIGINAL SIGNED BY:
i Peter S. Tam,' Senior Project Manager Project Directorate Il-2,
Division of. Reactor Projects - I/II-Office of Nuclear Reactor Regulation
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Docket Nos. 50-413 and 50-414 e
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RCrlenjak, RII DOCUMENT NAME: G:\\ CATAWBA \\ CAT 98040.RAI To receive a copy of this documsat, indicate in the box:
dC" - Copy without attachment / enclosure "E" - Copy M th attachmen,t/, enclosure "N" - No copy 0FFICE DRPE\\PDl!*2 %,
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William R. McCollum Please contact me at 301-415-1451 if you have any questions regarding this request for additional information.
Sincerely, r
A Peter. Tam, Senior Project Manager Project Directorate 11-2 Division of Reactor Projects - I/II Office of Nuclear Reactor Regulation Docket Nos. 50-413 and 50-414 cc w/ encl:
See next page i
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Catawba Nuclear Station i
Units 1 and 2 i
cc:
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Mr. M. S. Kitlan 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 i
Mr. Paul R. Newton 4830 Concord Road l
Legal Department (PB05E)
York, South Carolina 29745 Duke Power Company 422 South Church Street Regional Administrator, Region II Charlotte, North Carolina 28242-0001 U. S. Nuclear Regulatory Commission 101 Marietta Street, NW. Suite 2900 l
J. Michael McGarry, III, Esquire Atlanta, Georgia 30323 i-Winston and Strawn l
1400 L Street, NW Max Batavia, Chief Washington, DC 20005 Bureau of Radiological Health South Carolina Department of North Carolina Municipal Power Health and Environmental Control j
Agency Number 1 2600 Bull Street 1
1427 Meadowwood Boulevard Columbia, South Carolina 29201 J
P. O. Box 29513 Raleigh, North Carolina 27626-0513 Mr. G. A. Copp Licensing - EC050 l
Mr. Peter R. Harden, IV Duke Power Company j
Account Sales Manager 526 South Church Street Westinghouse Electric Corporation Charlotte, North Carolina 28242-0001 Power Systems Field Sales P. O. Box 7288 Saluda River Electric Charlotte, North Carolina 28241 P. O. Box 929 Laurens, South Carolina. 29360 County Manager of York County York County Courthouse Ms. Karen E. Long York, South Carolina 29745 Assistant Attorney General North Carolina Department of Justice Richard P. Wilson, Esquire P. O. Box 629 Assistant Attorney General Raleigh, North Carolina 27602 South Carolina Attorney General's Office Elaine Wathen, Lead REP Planner P. O. Box 11549 Division of Emergency Management Columbia, South Carolina 29211 116 West Jones Street Raleigh, North Carolina 27603-1335 Piedmont Municipal Power Agency 121 Village Drive Dayne H. Brown, Director Greer, South Carolina 29651 Division of Radiation Protection N.C. Department of Environment, Mr. T. Richard Puryear Health and Natural Resources Owners Group (NCEMC)
P. O. Box 27687 Duke Power Company Raleigh, North Carolina 27611-7687 4800 Concord Road York, South Carolina 29745