ML20072N250
| ML20072N250 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 03/25/1983 |
| From: | Tucker H DUKE POWER CO. |
| To: | Adensam E, Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8304010488 | |
| Download: ML20072N250 (7) | |
Text
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e DUKE POWER GOMPANY P.O. ISOx 33180 CHARLOTrE, N.C. 28242 IIAL II. Tt*CKER TE1.EPItONE wwrrammanent (yM) ayMMt March 25, 1983
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Mr. Harold R. Denton, Director Office of Nuclea; Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Attention:
Ms. E. G. Adensam, Chief Licensing Branch No. 4 Re: Catawba Nuclear Station Units 1 and 2 Docket Nos. 50-413 vnd 50-414 Preservice and Inservice Inspection Program
Dear Mr. Denton:
Please find attached a request for relief from a requirement of the ASME Code for volumetric examination of certain integrally welded vessel supports for Catawba's Preservice and Inservice Inspection Program.
Very truly yours, dA cc al B. Tucker RWO/php Attachment cc:
Mr. James P. O'Reilly, Regional Administrator U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30303 Mr. P. K. Van Doorn NRC Resident Inspector Catawba Nuclear Station Mr. Robert Guild, Esq.
Attorney-at-Law P. O. Box 12097 Ol Charleston, South Carolina 29412 O
1 Palnatto Alliance 2135h Devine Street Columbia, South Carolina 2M05 0304010488 830325 gDRADOCK 05000413 PDR
Mr. Harold R. Denton, Director March 25, 1983 Page 2 cc:
Mr. Jesse L. Riley Carolina Environmental. Study Group 854 Henley Place Charlotte, North Carolina 28207 Mr. Henry A. Presler, Chairman Charlotte-Mecklenburg Environmental Coalition 943 Henley Place Charlotte, North Carolina 28207 t
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ia-Seria l No.
CH-1-003 Page 1 of 2 DUKE POWER COMPANY Request For Relief From inservice inspection Requirement Station: CATAWBA NUCLEAR STATION Unit:
1&2 Reference Code:
ASME Boiler and Pressure Vessel Code Section XI 1974 Edition including addenda through Summer-lo75 1.
Component for which exemption is requested:
a.
Name and Identification Number:
Pressurizer integrally welded supports Seismic-_ Lugs to shell Support Brackets to shell National Board Nur.ber 7245 (Unit 1) b.
Function:
Restraint of Class i Vessel c.
ASME Section lli Code Class:
Class 1 d.
Valve Category:
NA
- 11. Reference Code Requirement that has been determined to be impractical:
Section XI Table IWB-2500, Examination Category B-H, requires that 100% of all support lug attachments to Class 1 Vessels shall be examined.Section XI Table IWB-2600, Item #B2.8, requires volumetric examination for integrally welded vessel supports.
Ill. Basis for Requesting Relief:
The Inservice Inspection Plan will be written to the ASME Boiler and Pressure Vessel Code Section XI 1980 Edition, or later edition if adopted prior to commercial operation.Section XI Table IWB-2500-1, e amination Category B-H integral attachments for vessels, will require surface examination of these attachment welds. Performing a surface examination for the preservice inspection will provide a basis for
. comparing future inservice inspection data.
Serial No. CN-1 -003 Page 2 of 2 lll.
Basis for Requesting Relief (cont.)
Reference drawing # - CNM-1201.01-175 Reference figure #'s - IWB-2500-13 IWB-2500-15 IV.
Alternate Examination:
Surface examination will be performed-on all seismic. lug and support bracket welds to the Class 1 pressure boundary.
4 V.
Implementation Schedule:
Surface examination data will become the Preservice Inspection record.
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