ML20004F002
| ML20004F002 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 05/21/1981 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| IEB-80-07, IEB-80-7, NUDOCS 8106160361 | |
| Download: ML20004F002 (2) | |
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400 Chestnut Street Tower II j l !.uy 26 A 3 : 4 1 May 21, 1981 Mr. James P. O'Reilly, Director of 6 ", g,
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Dear Mr. O'Reilly:
0FFICE OF INSPECTION AND ENFORCEMENT BULLETLN 80 RII:JP0 50-259, -260, -296 - BROWNS FERRY NUCLEAR PLANT In response to the subject bulletin we have performed inspection of the jet pump structures on Browns Ferry Nuclear Plant unit 1.
Fursuant to 13em A.3 of the bulletin we are submitting the enclosed description of how the inspection was performed and the results of the inspection. If you have any questions, please call Jim Domer at ETS 857-2014 To the best of my knowledge, I declare the statements contained herein are completis and true.
Very truly yours, TENNESSEE VALLEY AUTHORITY rg N
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l U M. Mills, Manager Nuclear Regulation and Safety Enclosure cc: Office of Inspection and Enforcement (Enclosure)
Division of Reactor Operations Inspection U.S. Nuclear Regulatory Commission i
Washington, DC 20555 16Il s
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8106160 } [
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o ENCLOSURE RESPONSE TO IE BULLETIN 80-07 BROWNS FERRY NUCLEAR PLANT UNIT 1 (DOCKET NO. 50-259) 3rowns Ferry unit 1 began a scheduled refueling outage on April 11, 1981. The inspection and examinations required by items A.1 and A.2 of IE Bulletin 80-07 were performed. Pursuant to item A.3 we are providing the following report.
On May 4, 1981, the jet pump assemblies in Browns Ferry Nuclear Plant unit 1 reactor were inspected in accordance with TVA Mechanical Maintenance Instruction 14.3-A.
This procedure meets all of the requirements in IE Bulletin 80-07, including ultrasonic examination of the jet pump holddown beam.
Ultrasonic examination of th > jet pump holddown beams was performed by General Electric Company PGE) employees on May 4,1981, in accordance with GE procedure TP-508.0654, Revision C.
This procedure is for BWR/4 jet pump holddown beams and is equivalent to the procedure referenced in IE Bulletin 80-07, GE procedure TP-508-0642, Revision A.
The 14-hour examination did not detect any indications in the holddown beams.
Visual inspection of the jet pump assembly took place on May 4, 1981. The jet pump holddown beams were inspected by lowering a camera by its power cable. The lower sections were inspected in a similar f&shion except a peanut light was taped to the camera to provide lighting. The resolution of the camers was verified by observing 1-mil cracks on a metallurgical sample. The inspection of i
the jet pump assemblies took approximately four hours and no abnormalities were found. Total exp'osure to the six individuals performing the UT and visual inspections was 60 mrem.
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