View source for 3F1293-07, Special Rept 93-03:on 931124,ODCM Required Radiation Monitor Taken Out of Svc Due to Failure to Pass Check Source Functional Test & Unavailable for Greater than 7 Days. Subj Monitor Restored to Normal Operation on 931206

{{Adams
| number = ML20059B462
| issue date = 12/23/1993
| title = Special Rept 93-03:on 931124,ODCM Required Radiation Monitor Taken Out of Svc Due to Failure to Pass Check Source Functional Test & Unavailable for Greater than 7 Days. Subj Monitor Restored to Normal Operation on 931206
| author name = Boldt G
| author affiliation = FLORIDA POWER CORP.
| addressee name = 
| addressee affiliation = NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
| docket = 05000302
| license number = 
| contact person = 
| document report number = 3F1293-07, 3F1293-7, 93-03, 93-3, NUDOCS 9401040155
| document type = REPORTABLE OCCURRENCE REPORT (SEE ALSO AO LER), TEXT-SAFETY REPORT
| page count = 2
}}

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Florida Power CORPORATION ceped tw una a puden m m ane December 23, 1993 3F1293-07 U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D. C. 20555

==Subject:==
Special Report 93-03

==Dear Sir:==

Attached is Special Report 93-03 which is submitted in accordance with the Florida Power Corporation Nuclear Operations Off-Site Dose Calculation Manual, Table 2-3, Action 29.
Should there be any questions, please contact this office.
Sincerely,
             //1~JJ}'cLLsg G. L. Boldt Vice President                                                                                             i Nuclear Production GLB/JAF:ff Attachment xt:    Regional Administrator, Region II NRR Project Manager Senior Resident Inspector 2803.33 i
CRYSTAL RIVER ENERGY COMPLEX: 15760 W Power Lino St . Crystal River, Florida 344264708 . (904) 7954486 9401040155 931223 PDR i,
ADOCK 0500030g S                     PDR   . L;

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SPECIAL REPORT 93                                                                                                    '
0FFSITE DOSE CALCULATION MANUAL REQUIRED RADIATION MONITOR UNAVAILABLE FOR GREATER THAN SEVEN DAYS This special report provides information concerning the cause and corrective action for the inoperable status of auxiliary building vent high range radiation monitoring instrumentation (RM-A2).         On November 24, 1993, Florida Power Corporation's (FPC) Crystal River Unit 3 (CR-3) was in MODE 1 (POWER OPERATION)
* at 100% power.                                                                         ,
At 0807, RM-A2 was taken out of service due to failure to pass a check source functional test. At that time, Offsite Dose Calculation Manual (ODCM) table 2-3 Action #29 was entered which requires instrument restoration to service within seven days or submission of a Special Report.
Failure of the check source functional test was due to misadjustment of magnetic       i pole pieces in the check source actuation mechanism.             Completion of the adjustments to this mechanism was delayed due to consultation with the detector        -
vendor.. At 1500 on December 6,1993, after being out of service for twelve days,
* RM-A2 was restored to normal operation, thus exiting ODCM table 2-3 Action #29.
This report is being written because the auxiliary building vent high range radiation monitoring instrumentation (RM-A2) was considered inoperable for more       -
than seven days. The significance of this event was minimal .since during the entire event the detector continued to operate properly. Additionally, alternate and independent plant instrumentation was available if necessary.
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