3F0592-17, Special Rept 92-01,on 920506,reactor Bldg Purge Exhaust Duct Monitor Was Taken Out of Svc.Caused by Inability to Calibrate RM-A1 Noble Gas Activity.Monitor mid-range Channel Was Recalibrated

Special Rept 92-01,on 920506,reactor Bldg Purge Exhaust Duct Monitor Was Taken Out of Svc.Caused by Inability to Calibrate RM-A1 Noble Gas Activity.Monitor mid-range Channel Was Recalibrated

ML20098D985
Person / Time
Site:	Crystal River
Issue date:	05/26/1992
From:	Boldt G FLORIDA POWER CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
3F0592-17, 3F592-17, 92-01, 92-1, NUDOCS 9206010160
Download: ML20098D985 (2)

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Florida Power 0 $e o. Y May 26, 1992 3f0592-17 U. S. Nucles.r Regulatory Commission Attention: Doc.ument Control Desk Washington, D.C. 20555

Subject:

Special Report 92-01

Dear Sir:

Enclosed is Special Report 92-01 which is submitted in accordance with Technical Specification 3.3.3.9.

Should there be any questions, please contact this office.

Very truly yours,

)

Gsry F. Boldt Vice President, Nuclear Production JLB: mag Enc.

xc: Regional Administrator, Region 11 NRR Project Manager Senior Resident inspector i

9206010160 9205"6 PDR ADOCK-05008302_.

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POST OFFICE BOX 219 + CRYSTAL RIVER, FLORIDA 326234219 * (904) 795-6486

' A Florida Progress Company \_

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'. SPECIAL REPORT 92-01 Backaround Crystal River Unit 3 Technical Specification 3.3.3.9, Radioactive Caseous Effluent Monitoring Instrumentation, identifies the radioactive gaseous effluent monitoring instrumentation channels which are required to be OPERABLE in accordance with the requirements of the specification. The specification further requires that with the number of OPERABLE channels less than required by the Minimum Channel (s) OPERABLE requirements, initiate the preplanned alternative methods of monitoring the appropriate parameter (s)within72 hours,and:

1) Either restore the inoperable Channel (s) to OPERABLE status within seven days of the event, or -l

2) Prepare and submit a Special Report to- the Commission pursuant to l Specification 6.9.2 within 14 days outlining the action taken, the cause of the inoperability, and the plans and schedule for restoring l

the system to OPERABLE status.

On May 6,1992 at 0717 hours0.0083 days <br />0.199 hours <br />0.00119 weeks <br />2.728185e-4 months <br />, the mid range channel of the noble gas activity monitor of the reactor building purge exhaust duct moniter (RM Al) was taken out of service during a routine surveillance for calibration. The I mid range channel was calibrated and placed back in service cn May 14, 1992 i at 1215 hours0.0141 days <br />0.338 hours <br />0.00201 weeks <br />4.623075e-4 months <br /> which exceeded the seven day time period referenced above.

Calibration of the mid range channel was scheduled to be completed within the seven day time period; however, this could not be accomplished as scheduled.

The purpose of this report is to comply. with 2) above in that the kM Al noble gas r,.tivity ronitor mid range channel was not restored to operable status within the sevei. day time frame referenced by 1) above.

ACTION TAKEW The following actions have been taken regarding this event:

1) The RM-Al noble gas activity monitor mid range channel was recalibrated-and placed in operable status.

2) Crystal River' Unit 3 initiated " the preplanned- alternate method of.

monitoring the appropriate parameter (s) within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. This. involved the use of the Reactor; Building . Atmosphere and Noble Gas Effluent Monitoring System and-the Nuclear Data Automated Isotopic and Chemical Measuring Systems (RANGE AIMS). Use of the RANGE AIMS enables the same monitoring capabilities provided by the' RM Al- noble gr.: activity monitor mid range channel, x- _ _ _ _ _

'Cause The cause of this event was the inability to calibrate the RM-Al noble gas activity monitor mid range channel and restore it to operable status within the seven day time period identified by Crystal River Unit 3 Technical Specification 3.3.3.9. A delay was experienced on two occasions when broken electrical ediing was discovered when attempting to place the mid range channel back in service. An additional delay occurred due to operational parameters associated with the Refuel 8 cutage.

Plans and Schedele for Restorina the System to ODerable Status '

The RM-Al noble gas activity monitor mid range channel was calibrated a.id '

I restored to operable status on May 14, 1992 at 1215 hours0.0141 days <br />0.338 hours <br />0.00201 weeks <br />4.623075e-4 months <br />.

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