ML19339B174
| ML19339B174 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 10/03/1980 |
| 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 8011060454 | |
| Download: ML19339B174 (2) | |
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TENNESSEE VALLEY AUTH0,RITY.
CHATTANOOGA. TENNESSEE '374o1' 400 Chestnut Street Tower II October 3,21h80 Il E 3
- d2 Mr. James P. O'Reilly, Director Office of Inspection and Enforcement U.S.-Nuclear-Regulatory Commission Region II - Suite 3100 101 Marietta Street Atlanta, Georgia 30303
Dear Mr. O'Reilly:
OFFICE p0FECT-ION-AND ' JFORCEMENT BULLETIN 80
- RII:JEF50-259, -260. -
- BROWNS FERRY NUCLEAR PLANT -
In response to-the subject bulletin we have perforced inspectier: cf the jet pump structures on Browns Ferry Nuclear Plant unit 2.
Pursuant to item 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 -
FTS 857-2014.
Very truly yours, TENNESSEE VALLEY AUTHORITY
.. b,
. M. Mills, Manager Subscribdagdsworntobefpre me this[ 'M dayof[bff. 1980.
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-Notary Public My Commission Expires
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Enclosure oc: Office of Inspection and Enforcement (Enclosure)
U.S. Nuclear Regulatory Commission Division of Reactor Operations-Inspection Washington. DC 20555
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l p-8011060454 CU5C5pf An equ,i opportunity empicy.,
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. ENCLOSURE RESPONSE TO IE BULLETIN 80-07 BROWNS FERRY NUCLEAR PLANT; UNIT 2 (DOCKET NO. 50-260)
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Browns Ferry unit:2 began a scheduled refueling outage on September 5, 1980. The inspection and examinations required by items A.1 and A.2 of IE Bulletin-80-07 vere performed. Pursuant to item A.3'we are providing the following report.
Ultrasonic examination of the jet pump holddown beams was performed by the General Electric Company (GE) employees on September 11, 1980, in accordance with GE procedure TP-508.0654, Revieion C.
This procedure is for BWR/4 jet pump holddown beams and is. equivalent to GE procedure TP-508.0642, Revision A, the procedure referenced in IE Bulletin 80-07.
The six-hour examination did not detect any indications in the holddown beams.
Visual inspe~ction of the jet pump assembly took place on September 12, 14, and 16, 1980. The jet pump holddown beams were inspected by attaching a camera to the bodendieck poles. The lower sections of the jet pump assemblies were inspected by lowering the camera by its power cable. The resolution of the camera was verified by observing 1-mil cracks on a metallurgical sample. The integrity of all jet pump assemblies was. verified.
On jet pump No. 1, a rough area on the surface of the inlet to the mixer was observed. This area will be checked during future inspections and does not compromise the integrity of the jet pump. The inspection of the jet pump assemblies tock.approximately 400 hours0.00463 days <br />0.111 hours <br />6.613757e-4 weeks <br />1.522e-4 months <br />.
When the unit returns to operation, the surveillance program described in item B.2 of IE Bulletin 80-07 will be continued.
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