ML022830214

August 2002 Monthly Operations Summary for University of Missouri-Columbia, Research Reactor

ML022830214
Person / Time
Site:	University of Missouri-Columbia
Issue date:	09/26/2002
From:	Hobbs P Univ of Missouri - Columbia
To:	Alexander Adams Office of Nuclear Reactor Regulation
References
Download: ML022830214 (5)

Text

Research Park Research Reactor Center Columbia, MO 65211 University of Missouri-Columbia PiiONE (573) 882-4211 FAX (573) 882-6360 September 26, 2002 Mr. Alexander Adams, Jr.

U.S. Nuclear Regulatory Commission Mail Stop 012-G13 Washington, DC 20555-0001

SUBJECT:

Monthly Operations Summary Enclosed is a copy of MURR's Monthly Operations Summary for August, 2002. If you have any questions, please contact me at (573) 882-5264.

Sincerely, Paul S. Hobbs, PE Reactor Manager PSH/lmcg cc. Craig Bassett Enclosure N_ý AN EQUAL oPPoRrrYN/ADA INSTrrUTION

UNVVERSITY OF MISSOURI RESEARCHREACTOR opEp.qg7oxs,,mo-w7-H'.fy su-,m,,m-/qRy

-AUýýUST'2002 Preyaredby:

Oyerations Staff

INTRODUCTION The reactor operated continuously in August with the following exceptions: four shutdowns for scheduled maintenance and refueling; two unscheduled shutdowns.

MAINTENANCE ACTIVITIES, 8/4/02 Refueled - removed core 02-38, loaded core 02-39.

8/5/02 Refueled - removed core 02-39, loaded core 02-40.

Transferred eight spent fuel elements to the BMI cask in preparation for shipment to the Westinghouse Savannah River Site.

8/12/02 Refueled - removed core 02-40, loaded core 02-41.

8/19/02 Refueled - removed core 02-41, loaded core 02-42.

8/20/02 Refueled - removed core 02-42, loaded core 02-43.

8/26/02 Refueled - removed core 02-43, loaded core 02-44.

UNSCHEDULED SHUTDOWVNS Date No. Type Cause 8/4/02 1144 RRI Blade 'D' not in contact with magnet On August 4, a Rod Not In Contact With Magnet Rod Run-In was automatically initiated when Blade 'D' anvil separated from its magnet during a sample handling evolution. The Blade 'D' Full In Light was lit so the control room operator initiated a manual scram and the reactor was shutdown. It was determined that during sample handling an operator trainee had allowed a 3" silicon holder to bump Control Blade 'D' Offset Mechanism. This bump was sufficient to cause the anvil to separate from the magnet. The reactor was subsequently refueled and returned to power.

Date No. Typ. Cause 8/20/02 1145 RRI Blade 'A' not in contact with magnet On August 20, a Rod Not In Contact With Magnet Rod Run-In was automatically initiated when Blade 'A' anvil separated from its magnet during a sample handling evolution. The Blade 'A' Full In Light was lit so the control room operator initiated a manual scram and the reactor was shutdown. It was determined that during sample handling an operator trainee had allowed a 4" silicon holder to bump Control Blade 'A' Offset Mechanism. This bump was sufficient to cause the anvil to separate from the magnet. The reactor was subsequently refueled and returned to power.

Both of these unscheduled shutdowns were the result of relatively new operators handling samples in close proximity to the reactor control blades. Operations personnel were reminded of the necessity of flawless attention to detail and to use care in sample handling.

OPERATION

SUMMARY

FOR MONTH OF Aug-02 University of Missour Research Reactor Center (MURR)

I 670 56 HOURS OPERATED THIS PERIOD TOTAL HOURS OPERATED, REACTOR 244,793.48 HOURS OPERATED AT FULL POWER, THIS PERIOD I 667.63 TOTAL HOURS AT FULL POWER, REACTOR 241,53863 INTEGRATED POWER THIS PERIOD I27830 IIMWD TOTAL INTEGRATED POWER, REACTOR I9483853 MWD Submitted by.

MWD Custodian/Reactor Physicist Date, f