ML19340E923
| ML19340E923 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry  |
| Issue date: | 12/30/1980 |
| 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 8101160252 | |
| Download: ML19340E923 (2) | |
Text
k
~
m 21 I
- r:
400 Chestnut Street Tower II 1
0 i>w
..i, ', OS
,,7 p;.= g December 30, 1980
=l0"
.d
=1 ml b
l}
~
G o
'd a
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 OF IN EECIION JLND_J.NFORCEMENT BULLETIN 80 RII:J _ 0-259,-260,-2963BROWNSFERRYNUCLEARPLANT In response to the subject bulletin we have performed inspection of the jet pump structures on Browns Ferry Nuclear Plant unit 3.
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 i
l L. M. Mills, Manager Nuclear Regulation and Safety i
I Subscribed and sworn to before me this day of 1980.
I l
Notary Fublic My Commission Expires Enclosure cc: Office of Inspection and Enforcement (Enclosure)
U.S. Nuclear Regulatory Commission i
Division of Reactor Operations Inspection Washington, DC 20555 81011eo25%
Q
.g'-
ENCLOSURE RESPONSE TO IE BULLETIN 80-07 BROWNS FERRY NUCLEAR PLANT UNIT 3 (DOCKET NO. 50-296)
Browns Ferry unit 3 began a scheduled refueling outage on November 23, 1980.
The inspection and examinations required by items A.1 and A.2 of IE Bulletin 80-07 were performed.
Pursuant to item A.3 ve are providing the following report.
On December 4, 5 and 6,1980, the jet pump assemblies in Browns Ferry Nuclear Plant unit 3 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 the jet pump holddown beams was performed by General Electric Company (GE) employees on December 4 and 5. 1980. 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 four-hour examination did not' detect any indications in the holddown beams.
Visual inspection of the jet pump assembly took place on December 5 and 6, 1980. The jet pump holddown beams were inspected by lowering a camera by its power cable. The lower sections were inspected in a similar fashion except a peanut light was taped to the camera to provide lighting.
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. The inspection of the jet pump assemblies took approximately eight hours.