ML20084A811: Difference between revisions
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ROCHESTER GA5 AND ELECTRIC CORPORATION = 89 EAST AVENUE, ROCNESTER. N.Y.1.tS49 i | ROCHESTER GA5 AND ELECTRIC CORPORATION = 89 EAST AVENUE, ROCNESTER. N.Y.1.tS49 i | ||
.... a.x... s.s e. | |||
Director | co Ginna Station April 11,1975 Mr. James P. O'Reilly Director U.S. Nuclear Regulatory Co::ssission | ||
U.S. Nuclear Regulatory Co::ssission | ~ | ||
Region 1 | Region 1 631 Park Avenue s | ||
631 Park Avenue | King of Prussin Pa. | ||
19t.05 | |||
~ -. | |||
==Subject:== | ==Subject:== | ||
Abnorcal Occurrence 475-09: Pinhole leak in cap attached | Abnorcal Occurrence 475-09: | ||
Pinhole leak in cap attached to Magnetic Control Rod Drive Rod Travel Housing K-7 | |||
==Dear Mr. O'Reilly:== | ==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. | 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. | |||
On April 10, 1975, with the head back on the reactor, the K-7 control rod cap | 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 | |||
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 | *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. | |||
CEP:bg cc: | The PORC net and recoccended that a new cap be purchased and installed. | ||
L. D. White, Jr. .KrA' E Corp. | 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: | |||
4 8304050618 750422 | C. J. S*.ra r th cut ISSE Corp. | ||
gDRADDCK 05000244 | s.. | ||
PDR | L. D. White, Jr..KrA' E Corp. | ||
2 | -J; M J. F."Svect, RG6E Corp. | ||
4 8304050618 750422 gDRADDCK 05000244 e | |||
f PDR l< | |||
2 | |||
.}} | |||
Latest revision as of 05:01, 14 December 2024
| 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) | |
Text
-.
7
@h%.U k s %
. :: u r;r:r
';m:.,
O Q
. M*
/
~
ROCHESTER GA5 AND ELECTRIC CORPORATION = 89 EAST AVENUE, ROCNESTER. N.Y.1.tS49 i
.... a.x... s.s e.
co Ginna Station April 11,1975 Mr. James P. O'Reilly Director U.S. Nuclear Regulatory Co::ssission
~
Region 1 631 Park Avenue s
King of Prussin Pa.
19t.05
~ -.
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.
s..
L. D. White, Jr..KrA' E Corp.
-J; M J. F."Svect, RG6E Corp.
4 8304050618 750422 gDRADDCK 05000244 e
f PDR l<
2
.