ML040780307
| ML040780307 | |
| Person / Time | |
|---|---|
| Site: | University of Missouri-Columbia |
| Issue date: | 03/02/2004 |
| From: | Foyto L Univ of Missouri - Columbia |
| To: | Alexander Adams Office of Nuclear Reactor Regulation |
| References | |
| Download: ML040780307 (5) | |
Text
.Cm, Research Reactor Center University of Missouri-Columbia March 02, 2004 Research Park Columbia, MO 65211 PHONE (573) 882-4211 FAX (573) 882-6360 50-) V;o 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 January 2004. If you have any questions, please contact me at (573) 882-5276.
Sincerely, Leslie Foyto Reactor Manager LM/sm cc. Craig Bassett Enclosure
- ' 71
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u OF onf ssoult RESEAsRCf REACc(OR OPERATPIOS fMo0wt3-fy SWMMNARY January 2004 2Preyare by:
Operations Staff
INTRODUCTION The reactor operated continuously in January with the following exceptions: 4 shutdowns for scheduled maintenance and refueling; one unscheduled shutdown.
MAINTENANCE ACTIVITIES 1/05/04 Refueled - removed core 03-60, loaded core 04-01.
1/12/04 Refueled - removed core 04-01, loaded core 04-02.
1/16/04 Refueled - removed core 04-02, loaded core 04-03.
1/19/04 Refueled - removed core 04-03, loaded core 04-04.
1/26/04 Refueled - removed core 04-04, loaded core 04-05.
UNSCHEDULED SHUTDOWNS Date No.
Tfe Cause 1/16/04 1168 Scram Coolant Charging Pump Suction Valve 515C left in the shut position after maintenance On January 16, 2004, with the reactor operating at 10 MW, the control room operators observed no discemable increase in pressurizer liquid level with the primary coolant charging pump operating. The charging pump had automatically started in response to a pressurizer low liquid level signal generated by level controller 936. The low liquid level condition was a result of normal operating system losses. After observing no level increase for approximately 3 minutes, the reactor was immediately shutdown and the coolant
-charging pump was manually secured. Investigation revealed that coolant charging pump suction valve 515C had been left in the shut position after maintenance; thereby isolating the charging pump from its suction source of makeup water. This resulted in a deviation from Technical Specification 3.1 0.b, which states, "The reactor shall not be operated unless the reactor makeup water system is operable and connected to a source of at least 2,000 gallons of primary grade water." With valve 515C in the shut position, the reactor makeup water system was in a degraded state and not considered operable. Pressurizer liquid level and pressure were within their normal operating ranges at the time of shutdown. A valve line-up checksheet was performed of the pressurizer system to ensure that no other valves were out-of-position and a Standing Order was issued prior to reactor startup that requires valve line-up checksheets to be performed on all systems as part of equipment post maintenance testing.
Licensee Event Report No. 04-01, providing a detailed description of this event and the corrective actions taken, was submitted within the Technical Specification thirty-day time requirement.
OPERA DON
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
Jan-04 1
690.77
[
255,965.67 1
l 687.81 1
252,656.93 _
l 286.70 l MWD l
99,473.60 MWD
-D ) 'j k
/
Submitted by:
MWD Custodlan/Reactor Physicist i~//c2 /IO Date: