ML20036A798
| ML20036A798 | |
| Person / Time | |
|---|---|
| Site: | Ohio State University |
| Issue date: | 05/05/1993 |
| From: | Cruz J OHIO STATE UNIV., COLUMBUS, OH |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9305170001 | |
| Download: ML20036A798 (4) | |
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l T-HE Engineering Experiment Station 167 Hitchcock Hall 2070 Neil Avenue
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Columbus, OH 43210-1275 k'
Phone 614-292-4903
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UNIVERSITY,
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May 5, 1993 j
Docment Control Desk US Nuclear Regulatory Cocmission
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Washington D.C.
20555
Subject:
Request for Technical Specification Change at The Ohio State University Research Reactor (OSURR), License R-75, Docket No. 50-150.
On March 24, 1993 the NRC granted a waiver of Technical Specificati m (T.S.)
3.2.3.13 for a period of 15 days to allow measurement of rod drop times with magnet currents up to 100 m.
The purpose was to determine if while operating with magnet currents at 100 ma the rods would be inserted in less than 600 milliseconds as required by Technical Specification 3.2.1.
The staff of the OSURR conpleted this testing on March 25, 1993; April 1,1993; and April 2, 1993. The results are attached.
It is the conclusion of the OSURR staff that T.S. 3.2.1 will be met with magnet currents as high as 100 ma and therefore T.S. 3.2.3.13 should be amended to read as follows:
Rod drop will occur for any control rod which has excess magnet current a 100 ma.
The results of the testing and proposed Technical Specification change were also reviewed and approved by the Reactor Operations Cmmittee at their April 14, 1993 meeting as required by T.S. 6.2.4(3).
If you have questions on this proposed Technical Specification Change please contact Mr. Richard Myser at 614-292-6755.
Since ely,
(
ose B. Cru, Jr., Director cc.
with enclosure Don W. Mi11er, OSUNRL Richard D. Myser, OSUNRL Theodore S. Michaels, US!ac I
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