ML042110138
| ML042110138 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 07/26/2004 |
| From: | Korsnick M Constellation Energy Group |
| To: | Clark R Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| BL-04-001 | |
| Download: ML042110138 (4) | |
Text
Maria Korsnick 1503 Lake Road Vice President Ontario, New York 14519-9364 585.771.3494 585.771.3943 Fax maria.korsnick~constellation.com Constellation Energy R.E. Ginna Nuclear Power Plant July 26, 2004 Mr. Robert L Clark Office of Nuclear Regulatory Regulation U.S. Nuclear Regulatory Commission Attn:
Document Control Desk Washington, D.C. 20555-0001 Subject Response to Bulletin 2004-01 R.E. Ginna Nuclear Power Plant Docket No. 50-244
Dear Mr. Clark:
This letter is in response to Bulletin 2004-01, "Inspection of Alloy 82/182r600 Materials Used in the Fabrication of Pressurizer Penetrations and Steam Space Piping Connections at Pressurized Water Reactors", dated May 28, 2004.
RG&E has verified that no Alloy 821182/600 materials were used in the fabrication of the Ginna pressurizer or attached piping/penetrations. Details of the construction of the pressurizer and penetrations are provided in the Attachment.
Very truly yours, Mary G. Korsnick STATE OF NEW YORK
- TO WIT:
COUNTY OF WAYNE 1, Mary G. Korsnick, being duty sworn, state that I am Vice President - R.E. Ginna Nuclear Power Plant, LLC (Ginna LLC), and that I am duly authorized to execute and file this response on behalf of Ginna LLC. To the best of my knowledge and belief, the statements contained in this document are true and correct. To the extent that these statements are not based on my personal knowledge, they are based upon Information provided by other Ginna LLC employees and/or consultants. Such information has been reviewed in accordance with company practice and I believe it to be reliable.
i~%AJIO
Subscnbed and sworn before me, a Notary Public in d
State of New York and County of 6
7=
el--,
,this X4 day of _
.a..
2004.
4deV__62 WITNESS my Hand and Notarial Seal:
My Commission Expires:
Attachment Cc:
Mr. Robert L Clark (Mail Stop 0-8-C2)
Project Directorate I Division of Licensing Project Management Office of Nuclear Regulatory Regulation U.S. Nuclear Regulatory Commission One White Flint North 11555 Rockville Pike Rockville, MD 20852 Notary Public V
a Date MICHALENE A BUNTS Notary Public, State of New York Registration No. 01BU6018576 Monroe County Commission Expires Jan 1/, 66?01 Regional Administrator, Region I U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406 U.S. NRC Ginna Senior Resident Inspector James M. Petro Jr., Esquire Counsel Constellation Energy 750 East Pratt Street, 5th Floor Baltimore, MD 21202 Daniel F. Stenger Ballard Spahr Andrews & Ingersoll, LLP 601 13th Street, N.W., Suite 1000 South Washington, DC 20005
ATTACHMENT 1 )
The pressurizer at Ginna Station is an 800 ft3 series 84 pressure vessel. The top and bottom heads are plain carbon steel castings (SA 216 Type WCC), and the shell is SA 302 Grade B carbon steel. The interior surfaces of the heads and shell are clad with austenitic stainless steel deposited by weld overlay processes. The steam space piping is connected to the spray, safety and relief nozzles in the top head by means of Type 316 stainless steel safe ends which are welded to the nozzles with stainless steel weld metal. These welded joints are full-penetration welds. All weld metal (including buttering layers) used in these joints is austenitic stainless steel. An austenitic stainless steel thermal sleeve is welded to the safe end on the spray nozzle by a fillet weld. The weld metal used to make this joint is austenitic stainless steel.
The heater penetration joints in the bottom head are entirely of austenitic stainless steel construction. The heater well sleeves are Type 316 stainless steel. The sleeves are rolled into holes in the head and then welded to the cladding on the interior of the head with a partial penetration weld. The immersion heaters are welded to each sleeve using austenitic stainless steel weld metal.
NRC CORRESPONDENCE TRAVELER NSL Engineer_
Date Received:
6 6E7-2, rY-'7 a 6e
~-/ VK& p M/21a/0 y
-Date of Letter:.
&~
/~o Tno Frm:
m -ET
-7
_
Due Date to NRC:.
CATS No.:_
Reviewers Date to Reviewer Review to NSL B}evs/1v1 7 //
zV_
Comments: (Attach or mark up pages.)
Prepared by Discipline.
Reviewed by Licensing:
Approved by Department Manager:,
NSL Pls:
(NSL Use Only)
Revision of Response
° Action Reports 0
Schedule 0 /V IU I S