ML042030289

June 2004 Monthly Operating Report for University of Missouri Research Reactor Facility

ML042030289
Person / Time
Site:	University of Missouri-Columbia
Issue date:	07/13/2004
From:	Foyto L Univ of Missouri - Columbia
To:	Alexander Adams Office of Nuclear Reactor Regulation
References
Download: ML042030289 (5)

Text

Research Park xLMt Research Reactor Center Columbia, MO 65211 W University of Missouri-Columbia ioNE (573) 882-4211 FAX (573) 882-6360 July 13, 2004 Mr. Alexander Adams, Jr.

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

SUBJECT:

University of Missouri Research Reactor Facility Docket No. 50-186 Monthly Operations Summary

Dear Mr. Adams:

Enclosed is a copy of MURR's Monthly Operations Summary for June 2004. If you have any questions, please contact me at (573) 882-5276.

Sincerely, Leslie Foyto Reactor Manager LM/sm cc. Craig Bassett

Enclosure:

June Operation Summary - 4 pages j7s,:7 AN EQUAL OPPORTnNTY/ADA INSIrrTIOmN

NTJVERSITV IO YJ1isSOrURI

'RESEARCHRETAcrOR OPEP.gT'IOWS moJgcTrf-fLy SUMMAYRY June 2004 Preyarecfdy:

OperationsStaff

INTRODUCTION The reactor operated continuously in June with the following exceptions: 4 shutdowns for scheduled maintenance and refueling; 2 unscheduled shutdowns.

MAINTENANCE ACTIVITIES 6/3/04 Refueled - removed core 04-25, loaded core 04-26.

6/7/04 Refueled - removed core 04-26, loaded core 04-27.

Reinstalled refurbished Secondary Coolant System Distribution Valve S-19.

Replaced cooling water lines to Primary Coolant Pumps 501AIB.

6/14/04 Refueled - removed core 04-27, loaded core 04-28.

6/16/04 Refueled - removed core 04-28, loaded core 04-29.

6/17/04 Shipped eight spent fuel elements to Savannah River Site.

6/21/04 Refueled - removed core 04-29, loaded core 04-30.

Removed the 20 element X fuel storage basket for inspection.

6/28/04 Refueled - removed core 04-30, loaded core 04-3 1.

Placed an epoxy patch on the secondary side of Primary Heat Exchanger 503A.

6/29/04 Loaded new pool de-ionization bed 'F'.

UNSCHEDULED SHUTDOWNS Date No. Type Cause 6/3/04 NA Manual Sample scheduling error Scram On June 3, the reactor was shutdown due to a sample scheduling error which resulted in the incorrect sample being removed on the previous maintenance day. After the shutdown, the correct sample was pulled. The reactor was subsequently returned to 10 MW operation.

6/16/04 NA Manual Inner Airlock Door Positioning Chain Scram On June 16, the reactor was shutdown when it was discovered that the inner airlock door positioning chain had come off it's sprocket due to a loose set screw. Containment integrity was never lost since the outer airlock door remained closed and the seal inflated.

The reactor was secured, and the inner airlock door set screw was replaced with a locking style set screw. The reactor was subsequently returned to 10 MW operation.

OPERATION

SUMMARY

FOR MONTH OF I Jun-04 University of Missour Research Reactor Center (MURR)

HOURS OPERATED THIS PERIOD 644.02 TOTAL HOURS OPERATED, REACTOR 259,209.49 HOURS OPERATED AT FULL POWER, THIS PERIOD 641.69 TOTAL HOURS AT FULL POWER, REACTOR 255,883.97 INTEGRATED POWER THIS PERIOD l 267.53 l MWD TOTAL INTEGRATED POWER, REACTOR l100,818.82 lMWD Submitted by:

_/- I e's MWD Custodian/Reactor Physicist Date: 7/ I ofj-