ML20084A811
| ML20084A811 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 04/11/1975 |
| From: | Platt C ROCHESTER GAS & ELECTRIC CORP. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| Shared Package | |
| ML20084A805 | List: |
| References | |
| AO-75-09, AO-75-9, NUDOCS 8304050618 | |
| Download: ML20084A811 (1) | |
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ROCHESTER GA5 AND ELECTRIC CORPORATION = 89 EAST AVENUE, ROCNESTER. N.Y.1.tS49 i
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co Ginna Station April 11,1975 Mr. James P. O'Reilly Director U.S. Nuclear Regulatory Co::ssission
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Region 1 631 Park Avenue s
King of Prussin Pa.
19t.05
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Subject:
Abnorcal Occurrence 475-09:
Pinhole leak in cap attached to Magnetic Control Rod Drive Rod Travel Housing K-7
Dear Mr. O'Reilly:
'ihie is to confirn ny phone call to Mr. Paul Kellcgg yesterday to report
~ Abnormal Occurrence 475-09 at Cinna Station.*
At the beginning of the refueling shutdewn that started on March 10, 1975,.
there was en indication of a leak frco K-7 centrol rod housing cap.
This was found by visual inspection. A dye penetrant check of the area did not shcv any lenk.
The head was recoved fron the reaccor and placed on the miwd ou the up.u m. iu ;. fisur uf the evacuit.:uat.
Iu this luc iluu
- t u.s not possible to do any further checking of the area.
On April 10, 1975, with the head back on the reactor, the K-7 control rod cap was inspected further. The area was cledned with a file and polished with e.nery cloth. Another dye penetrant examinatien of the area shcued a pinhole leak approxinately 1/4" to 3/S" above the seal weld that seals the screwed cap to the Rod Travel llousing.
The PORC net and recoccended that a new cap be purchased and installed.
If a ncv cap is not availabic in time for plant startup, a weld repair procedure will be developed to repair the leak.
, 2. W Charles E. Platt Superintendent CEP:bg cc:
C. J. S*.ra r th cut ISSE Corp.
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L. D. White, Jr..KrA' E Corp.
-J; M J. F."Svect, RG6E Corp.
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