ML20196B068
| ML20196B068 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 11/24/1998 |
| From: | Colburn T NRC (Affiliation Not Assigned) |
| To: | Langenbach J GENERAL PUBLIC UTILITIES CORP. |
| References | |
| TAC-MA0437, TAC-MA437, NUDOCS 9811300252 | |
| Download: ML20196B068 (3) | |
Text
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UNITED STATES g
,j NUCLEAR REGULATORY COMMISSION o
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WASHINGTON, D.C. 20666 4001 November 24, 1998 Mr. James W. Langenbach, Vice President and Director TMI GPU Nuclear, Inc.
P.O. Box 480 Middletown, PA 17057
SUBJECT:
INSERVICE INSPECTION RELIEF REQUEST REGARDING SEMI-ELLIPTICAL CIRCUMFERENTIAL RV NOZZLE-TO-PIPE WELDS FOR THREE MILE ISLAND, UNIT 1 (TMl-1) (TAC No. MA0437)
Dear Mr. Langenbach:
By letter dated December 19,1997, you sent the NRC a letter, the stated purpose of which was to provide confirmation of the plant specific applicability of a generic NRC staff SER (safety evaluation report) to TMI-1 and to request plant-specific relief from the requirement to perform j
extemal surface examinations of the reactor vessel nozzle-to-pipe welds connected to the TMI-1 Core Flood and Reactor Coolant System hot and cold leg piping. Subsequently, by letter dated June 1,1998, the NRC staff requested additionalinformation (RAI) related to the proposed t
relief request. By letter dated July 9,1998, you responded to the RAI. You stated that the purpose of your December 19,1997, letter was to satisfy the conditional relief granted by the NRC staff in its October 8,1992, safety evaluation (SE) of your requested relief RR-01, RR-01 had been submitted as part of your April 19,1991, second 10-yearinterval inservice Inspection Plans and Schedufes. The staff's October 8,1992, SE stated that the proposed attemative of a volumetric inspection from the inner diameter is acceptable, provided the licensee meets the following conditions:
(1) The remote volumetric examination includes the entire weld volume and heat affected zone instead of only the inner one-third of the weld.
(2) The ultrasonic testing instrumentation and procedures are demonstrated to be espable of 3
detecting outer diameter surface connected defects in the circumferential orientation in a laboratory test block.
O in your December 12,1991, letter you provided your commitment to examine the full weld volume 1
and adjacent base metal % inch on each cide of the weld, and to qualify the contractors b.[
(Babcock and Wilcox Nuclear Services) inspection technique in order to meet the above conditions. The qualification of the inspection technique was pursued generically by the Babcock and Wilcox Owners Group (BWOG) and approved by NRC staff in a letter dated March 21,1996.
In its letter the NRC staff stated that licensees using the BWOG topical report (TR) as a basis for relief must confirm the plant specific applicability by demonstrating that the input stresses under normal / upset and emergency / faulted conditions for its plant are the result of using the bounding transient in the analysis and the material in its inlet, outlet, and core flood nozzles is either A508 Class 2 low a!!oy steel or SA 336 (316) stainless steel.
9811300252 981124 PDR ADOCK 05000289 G
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J.Langenbach ' l Your July 9,1998, letter provided the confirmation noted above related to bounding transients and nozzle materials for TMI-1. Based on the above, the staff concurs with your statement that I no additional reliefis necessary. This completes our review of TAC No. MA0437. If you have questions related to the above, please call me at (301) 415-1402. ' Sincerely, Original signed by Timothy G. Colbum, Senior Project Manager Project Directorate 1-3 Division of Reactor Projects - t/11 Office of Nuclear Reactor Regulation Docket No. 50-289 cc: See next page DISTRIBUTION ^gyXDosiest Filee PUBLIC GHill(2) PDl-3 r/f JZwolinski BMcCabe TColbum TClark - TMcLellan OGC ACRS- ' CHehl, Rl GBagchi - DOCUMENT NAME: G:\\COLBURN\\MA0437.ltr i To receive a copy of this document. indicate in the box: "C" Copy without attachment / enclosure "E" = Copy with attachment / enclosure "N"// Npr copy 0FFICE-P01-3/PN l P01 3/LA Aff) l 'i-POI J/D _ M BCtEM/ l NAME TColburn I" TClark. JiV @#/ G&a(acht # " DATE {// f(. /98 ll / /A /98 72'//A 98 /W M98 0FFICIAL RECORD COPY a
J.Langenbach Three Mile Island Nuclear Station, Unit No.1 cc: Michael Ross Robert B. Borsum Director, O&M, TMI B&W Nuclear Technologies GPU Nuclear, Inc. Suite 525 P.O. Box 480 1700 Rockville Pike Middletown, PA 17057 Rockville, MD 20852 John C. Fomicola William Domsife, Acting Director Director, Planning and Bureau of Radiation Protection Regulatory Affairs Pennsylvania Department of GPU Nuclear, Inc. Environmental Resources 100 Interpace Parkway P.O. Box 2063 Parsippany, NJ 07054 Harrisburg, PA 17120 Jack S. Wetmore Dr. Judith Johnsrud Manager, TMl Regulatory Affairs National Energy Committee GPU Nuclear, Inc. Sierra Club P.O. Box 480 433 Orlando Avenue i Middletown, PA 17057 State College, PA 16803 Emest L. Blake, Jr., Esquire Peter W. Eselgroth, Region i Shaw, Pittman, Potts & Trowbridge U.S. Nuclear Regulatory Commission 2300 N Street, NW. 475 Allendale Road Washington, DC 20037 King of Prussia, PA 19406 Chairman Board of County Commissioners of Dauphin County Dauphin County Courthouse Harrisburg, PA 17120 Chairman Board of Supervisors of Londonderry Township R.D. #1, Geyers Church Road kiddletown, PA 17057 Weyne L. Schmidt Se.'ior Rasident Inspector (TMI-1) U.S. Nue. lear Regulatory Commission P.O. Box 219 Middletown, PA 17057 Regional Administrator Region i U.S. Nuclear Regulatory Commission 475 Allendale Road King of Prussia, PA 19406}}