ML052630339
| ML052630339 | |
| Person / Time | |
|---|---|
| Site: | University of Missouri-Columbia |
| Issue date: | 09/09/2005 |
| From: | Foyto L Univ of Missouri - Columbia |
| To: | Alexander Adams NRC/NRR/DRIP/RNRP |
| References | |
| Download: ML052630339 (5) | |
Text
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0 Research Reactor Center University of Missouri-Columbia Research Park Drive Columbia, MO 65211-3400 PHONE (573) 882-4211 FAX (573) 882-6360 wEBsrrE http://Ieb.nissouri.edu/-murrw-wv September 9, 2005 Mr. Alexander Adams, Jr.
U.S. Nuclear Regulatory Commission Mail Stop 012-G13 Washington, DC 20555-0001
REFERENCE:
SUBJECT:
Docket No. 50-186 University of Missouri-Columbia Research Reactor Amended Facility License R-103 MURR Operations Monthly Summary
Dear Mr. Adams:
Enclosed is a copy of MURR's Monthly Operations Summary for August 2005. If you have any questions, please contact me at (573) 882-5276.
Sincerely, QL °2(7V es e P. Foyto Reactor Manager LPF/djr Enclosure 4021 2,-q FiGTrrNG CANCER iwnri TOMORROW'S TECINOLOGY.
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UNIVERSITY OF MISSOURI RESEARCH REACTOR OPERATIONS MONTHLY
SUMMARY
August 2005 Prepared by:
Operations Staff
.1 INTRODUCTION The reactor operated continuously in August with the following exceptions: 5 shutdowns for scheduled maintenance and refueling; 1 unscheduled shutdown (power reduction).
MAINTENANCE ACTIVITIES 8/1/05 Refueled - removed core 05-35, loaded core 05-36.
Replaced the Fan Failure Logic Relay (CP-1) in the building exhaust ventilation fan failure circuit.
8/8/05 Refueled - removed core 05-36, loaded core 05-37.
8/15/05 Refueled - removed core 05-37, loaded core 05-38.
Transferred the used Be reflector and the tantalum wedge from pool storage to a cask stored in the facility basement.
Installed the rebuilt instrument cabinet cooling fan.
8/22/05 Refueled - removed core 05-38, loaded core 05-39.
8/29/05 Refueled - removed core 05-39, loaded core 05-40.
Page 2 of 3
UNSCHEDULED POWER REDUCTIONS Date No.
Type Cause 8/22/05 1183 Rod Run In Nuclear Instrumentation Short Period On August 22, during a normal reactor startup, a Nuclear Instrumentation Channel No. 3 Short Period Rod Run-In occurred when an "Anti-Siphon Tank Hi-Lo Pressure" annunciator alarm initiated. The control rods had been withdrawn to a height of approximately two inches from the fully inserted position when the rod run-in occurred. Anti-Siphon System pressure had lowered to the alarm set point as a result of system cool-down prior to startup. The rod run-in was most likely caused by electrical "noise" from the annunciator alarm. A reactor startup was subsequently performed to 10 MW operation.
Page 3 of 3
OPERATION
SUMMARY
FOR MONTH OF University of Missour Research Reactor Center (MURR)
HOURS OPERATED THIS PERIOD TOTAL HOURS OPERATED, REACTOR HOURS OPERATED AT FULL POWER, THIS PERIOD TOTAL HOURS AT FULL POWER, REACTOR INTEGRATED POWER THIS PERIOD TOTAL INTEGRATED POWER, REACTOR I
Aug-05 1
671.53 1 268,419.49 1
669.82 1 265,053.27 1
279.19.0 L 104,641.02- _
MWD MWD D104 k
Submitted by.
Date:
MWD Custodian/Reactor Physicist geo
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