2CAN099804, Requests Approval to Use ASME Code Cases 2142-1 & 2143-1 of RCS for ANO-2.Application for Subject Code Cases Will Permit Util to Use Welding Procedures & Performance Qualifications Previously Qualified for F-No 43 Matls for Fabrication
| ML20151V430 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 09/09/1998 |
| From: | Vandergrift J ENTERGY OPERATIONS, INC. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| 2CAN099804, 2CAN99804, NUDOCS 9809140307 | |
| Download: ML20151V430 (2) | |
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O Entergy operations,Inc.
1448 SR 333 RussdMio, AR 72801 Td 501858 5030 September 9,1998 2CAN099804 i
U. S. Nuclear Regulatory Commission j
Document Control Desk Mail Station OPI-17 Washington, DC 20555 hbjic.:
Arkansas Nuclear One - Unit 2 Docket No. 50-368 License No. NPF-6 Request To Use ASME Section IX Code Cases 2142-1 And 2143-1 Gentlemen:
)
In accordance with the provisions of 10CFR50.55a(a)(3), Entergy Operations Incorporated -
(Entergy) requests approval to use American Society of Mechanical Engineers (ASME) Code Cases 2142-1 and 2143-1 on the Reactor Coolant System for Arkansas Nuclear One, Unit 2 (ANO-2).
Entergy is in the process of fabricating replacement steam generators for installation on our ANO-2 facility. The replacement steam generators will be using Alloy 690 clad material which has been proven to be more corrosion resistant than Alloy 600 for RCS applications.
The application of Nickel-Chromium-Iron (Ni-Cr-Fe) welding materials similar to Alloy 690 is i
necessaiy in the fabrication and installation of the replacement steam generators. Code Case 2142-1 specifies the alternative rule requirements which may be applied to grouping UNS N06052 Ni-Cr-Fe weld filler metal and Code Case 2143-1 specifies the alternative rule requirements which may be applied to grouping UNS W86152 Ni-Cr-Fe welding electrodes.
These welding materials provide a better weld interface with Alloy 690. The original Code Cases 2142 and 2143 were approved by ASME in 1992; and were subsequently revised in June 1995 with no substantive change.
These welding materials provide a superior level of safety and quality in their ability to provide an improved corrosion resistance similar to Alloy 690. The. application of these code cases will permit ANO-2 to use welding procedures and performance qualifications previously qualified for F-No. 43 materials for the fabrication of our replacement steam generators without any compromise in the level of quality or safety to the RCS.
9809140307 980909 PDR ADOCK 05000368
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U. S. NRC September 9,1998 2CAN099804, Page 2 Similar requests for relief has been submitted and approved by the NRC for Commonwealth Edison's Byron and Braidwood facilities and other nuclear facilities.
If you have any questions concerning this request please contact Steve Bennett of my staff at 501-858-4626.
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truly yours, D
Ji y D. Vander Director, Nuclear Safety i
JDV/sab cc:
Mr. Ellis W. Merschoff Regional Administrator U. S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-8064 NRC Senior Resident Inspector Arkansas Nuclear One P.O. Box 310 London, AR 72847 Mr. William D. Reckley NRR Project Manager Region IV/ANO-1 & 2 U. S. Nuclear Regulatory Commission NRR Mail Stop 13-H-3 One White Flint North 11555 Rockville Pike Rockville, MD 20852