ML20202J120

Monthly Operating Rept for Sept 1997 for Univ of Missouri Research Reactor

ML20202J120
Person / Time
Site:	University of Missouri-Columbia
Issue date:	09/30/1997
From:	MISSOURI, UNIV. OF, COLUMBIA, MO
To:
References
NUDOCS 9802230087
Download: ML20202J120 (2)

Text

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~i Fl h UNIVERSITY OF MISSOURI RESEARCH REACTOR OPERATIONS MONTHLY

SUMMARY

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September 1997 Prepared by:

Operations Staff 9002230087 970930

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1 September 1907 The reactor operated continuously in September with the follow.3g execptions: one shutdown of approximately 6 days duration (from 2106 9/7/97 to 2350 9/13/97) for : placement of the beryllium redector per Special Maintenance Procedure #11; five shutdowns for othe. scheduled maintenance, refueling, or nux trap changes; two unse't.eduled shutdowns.

On September 14, a rod not in contact with magnet rod run in occurred when control blade *D" separated from its magnet during a startup. The blade housing was inspected and subsequently re aligned centering the anvil within the guide tube.

On September 14, a wide range momwr (Channel #4) high power rod run.in occurred during a startup when the operator failed to shift the range switch up scale. The rod run in was reset and the startup was subsequently completed with no further problems. The operator invgived was reminded of his responsibility to be cognizant of instrument indications at all times, and particularly during the critical phases of the startup.

Major maintenance items for the month included: replacing the beryllium reflector per SMP 11; installing licamport *D" collimator liner; completing Modification Package 941 on Beamport *D" -

this completes the modification of removing the experimental cans on all of the beamports; replacing the regulating blade " jog out" switch; replacing the breaker for coolir.g tower fan #3; installing the new rod position indicator unit on the control panel, UNSCIIEDULED SIIUTDOWNS DATE # TYPE CAUSE 9/14/97 1067 Rod Run In lilade "D" separated from magnet.

9/14<97 1068 Rod Run In Failure to shift scales on Channel #4, Wide Range Monitor OPEltATION

SUMMARY

llOURS OPERATED TIIIS PERIOD 520 TOTAL llOURS OPERATED 206,703 IIOURS AT FULL POWER Tills PERIOD 510 TOTAL IIOURS AT FULL POWER 203,629 INTEGRATED POWER Tills PERIOD 212 MWD TOTAL INTEGRATED POWER 78,996 MWD

MAINTENANCE ACTIVITIES 09/07/97 Shutdown a-A .iefueled core removed core 97 39 for SMP 11 replacement of beryllium reflector.

09/11/97 Installed Beampo.t *D' collimator liner.

09/12/97 Installed new rod position indicator unit in control panel.

09/13/97 Loaded core 97 40.

09/14/97 Refueled removed core 97-40, loaded core 97 41.

09/16/97 Completed Modification Package 941 remaval of beamport experimental cans.

09/22/97 Refueled removed core 97 41, loaded core 97 42. s 9/29/97 Refueled . removed core 97 42, loaded core 97 43. Replaced regulating bladejog out switch. Replaced breaker for cooling tower far #3.

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