ML20003H516
| ML20003H516 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 04/15/1981 |
| From: | Daltroff S PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| IEB-80-07, IEB-80-7, NUDOCS 8105060253 | |
| Download: ML20003H516 (3) | |
Text
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PHILAD ELPHI A ELECTRIC COM PANY
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2301 M ARKET STREET C
P.O. BOX 8699 1881 -1981 PHILADELPHI A. PA.19101 SHIELDS L. DALTROFF stsNn5c"[nN ion April 15, 1981 Re: Docket Nos. 50-277 50-278 IE Bulletin 80-07 j
s Mr. Bo yce H. 'Gri.er, - Director.
h, Of fice of Inspection & En forcem ent i
a Region I M/iY 'O <1 1981 %
US Nuclear Regulatory Commission
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631 Park Avenue
{M King of Prussia, PA 19406
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Dear Mr. Grier:
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This letter is in response to the portion of IE Bulletin 80-07 dealing with plants now in a scheduled refueling outage, for war ded to us on April 4, 1980, concerning BWR j et pump assembly failure.' The " Action to Be Taken by Licensees" for -
" Plants Now in Scheduled Refueling Outage Prior to Restart" is restated below with our response.
Action to be Taken by Licensees For Plants Now in Scheduled Refueling Outag e Prior to Restart 1.
Visual inspections assisted by TV camera shall be conducted to assess the integrity of the jet pump structures, the holdown beam assembly, hold-downs, wedge and restrainer assembly.
Particular attention should be given to areas of unusual wear, f ailed keeper welds or other evidence of distress that could be indicative of loss of beam assembly preload.
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2.
Ultrasonic examinations, utilizing GE procedures TP-508.0642 (Rev. A) or equivalent, shall be conducted to assess the integrity of the jet pump hold-down beams at the mid Jength ligament areas bounding the beam bolt.
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Mr. Boyce H. Grier Page 2
Response
The required inspection of Peach Bottom Unit 3 Jet pumps was performed utilizing underwater TV equipment.
-The j et pump hold down, beam inspection was per formed following General Electric procedure TP-508.0654, Rev.
C.
This procedure, which is applicable to BWR 4 plants, was used in place of the procedure reference in Item 2 above which is applicable to earlier plants.
The inspection data was obtained by General Electric Company personnel qualified to ANSI, Level II standards.
The results were reviewed and accepted by the Philadelphia Electric Com p a n y,
Maintenance Department's ISY Senior Engir2er.
Of the 20 jet pumps only j et pump number 6 showed indications under ultrasonic (UT) examination although no reportable indications were found by visual examination.
An interpretation of the UT results shows that the indications are in the. area of 5
the hold down bolts.
It is planned to remove this beam for I
further evaluation during the current refuel / maintenance outage.
A similar inspection program performed on Unit 2 during April 1980, reported to you by letter dated May 2, 1980, found no rej ectable indications.
The j et pump operability surveillance initiated in response to paragraph B.2 of IE Bulletin 80-07 shall continue.
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Very truly yours,
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cc:
U.S.
Nuclear Regulatory Commission Of fice of Inspection and En fo rcem ent Division of Reactor Operations Inspection Washington, DC 20555 t
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e CCMMONWEALTH OF PEllflSYLVANIA :
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COUNTY OF PHILADELPHIA S.
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Daltroff, being first d uly sworn, deposes and says:
That he is Vice President of Philadelphia Electric Company, the Applicant herein; that he has read the foregoing response to IE Bulletin 30-07 and knows the contents thereof; and that the statements and matters set forth therein are true and Q
correct to the best of his knowledge, information and belief.
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j Subscribed and sw n to-i before me this fh day
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