ML19340B744
| ML19340B744 | |
| Person / Time | |
|---|---|
| Site: | Marble Hill |
| Issue date: | 10/27/1980 |
| From: | Fiorelli G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Shields S PSI ENERGY, INC. A/K/A PUBLIC SERVICE CO. OF INDIANA |
| References | |
| NUDOCS 8011120049 | |
| Download: ML19340B744 (1) | |
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Docket No. 50-546-Docket-No. 50-547 Public Service of Indiana ATTN:
Mr. S. W. Shields Senior Vice President Nuclear Division Post Office Box 190 New Washington, IN 47162 Gentlemen:
-Thank you for your final report dated October 14, 1980, pursuant to 10 CFR 50.55(e) regarding Westinghouse Type W-2 switches. We will j
complete our review of this matter during a future inspection.
Your cooperation with us is appreciated.
Sincerely, l
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Gaston Fiorelli, Chief Reactor Construction and Engineering Support Branch cc: Director, RCI/IE Director, AEOD Chief, OEB/MPA IE Files Mr. G. N. Brown, Project l
Director C. Kammerer, CA
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cc w/1tr dtd 10/14/80:
Central Files PDR Local PDR NSIC l
TIC LeBoeuf, Lamb, Leiby & MacRae Mr. Dave Martin, Office of I
Attorney General Mr. John _R. Galloway, Staff Director, Environment, Energy _
and Natural Resources Subcommittee i
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S. W. Shields Vece President Eleetnc System October 14, 1980 Mr. James G. Keppler, Director Docket Nos..
STN 50-546 U. S. Nuclear Regulatory Commission STN 50-547 Region III Construction Fermit Nos..
799 Roosevelt Road CFFR - 170 Glen Ellyn, Illinois 60137 CFFR - 171 Marble Hill Nuclear Generating Station - Units 1 and 2
Dear Mr. Keppler:
On June 19, 1930, Mr. T. D. Geib of Public Service Company of Indiana, Inc., (PSI) notified your office of a potentially reportable item as required by 10 CFR 50.55 (e). The same item was also reported by Westinghouse under 10 CFR 21 (see Westinghouse letter no. NS-TMA-2264, dated June 18, 1980, to the Director, Office of Inspection and Enforcement).
Westinghouse identified intermittent contact operation as a problem occuring in their Type W-2 switch when it is set in the neutral position.
j This switch is used in a number of safeguards systems and this problem can defeat the automatic actuation function of the switch.
Westinghouse has been studying intermittent contact operation of their Type W-2 switches and presently continues to recommend the interim solution of rewiring indicator lights as described in Westinghouse NSD Technical Bulletin No. NSD-TB-80-9.
PSI will implement this interim solution if a permanent solution is not available six months prior to fuel load. PSI will continue to monitor the efforts of Westinghouse in this matter and implement the necessary changes.
This letter is intended to fulfill the requirements of a final report as defined in 10 CFR 50.55(e).
If you have any questions on this report, please feel free to contact me.
Sincerely, S. W.
Shields TDG/cg
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1)dF6 SOLO 3oot-/sy6168 1000 East Main Street, Plainfield, Indiana
'317. 839.9611
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i PUBUC INDIANA Letter: James G. Keppler October 14, 1980 SERVICE Director of Inspection and Enforcement cc:
U. S. Nuclear Regulatory Commission Washington, D. C.
20555 E. R. Schweibinz, P. E.
J. J. Harrison
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