3F1093-17, Special Rept 93-02:on 931011,primary Meteorlogical Sys Taken Out of Svc for Performance of TS Surveillance 4.3.3.4 & TS 3.3.3.4 Entered Since Backup Sys Out of Svc.Surveillance Performed & Sys Returned to Operation on 931019

Special Rept 93-02:on 931011,primary Meteorlogical Sys Taken Out of Svc for Performance of TS Surveillance 4.3.3.4 & TS 3.3.3.4 Entered Since Backup Sys Out of Svc.Surveillance Performed & Sys Returned to Operation on 931019

ML20059C954
Person / Time
Site:	Crystal River
Issue date:	10/27/1993
From:	Boldt G FLORIDA POWER CORP.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
3F1093-17, 93-02, 93-2, NUDOCS 9311020071
Download: ML20059C954 (2)

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Power coeeosATion Crystal River Unit 3 Doc.ket No, s0-302 October 27, 1993 3F1093-17 U. S. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D. C. 20555

Subject:

Special Report 93-02

Dear Sir:

Enclosed is Special Report 93-02 which is submitted in accordance with Technical Specification 3.3.3.4.

Sincerely, G. L. ldt  ;

Vice President '

Nuclear Production  !

EEF: mag Enclosure xc: Regional Administrator, Region 11 Project Manager, NRR Senior Resident Inspector 011in, o 9311020071 931027 PDR ADOCK 05000302 Fl M 8 S ,4 l '1 pyg 3 A FIvrida Progress Company

SPECIAL REPORT 93-02 TECHNICAL SPECIFICATIONS REQUIRED METEOROLOGICAL INDICATIONS UNAVAILABLE FOR GREATER THAN 7 DAYS On October 11, 1993, Florida Power Corporation's (FPC) Crystal River Unit 3 (CR-3) was in MODE 1 (POWER OPERATION) at 75% power. This special report provides information concerning the cause and corrective action for inoperable meteorological monitoring instrumentation as required by Technical Specifications (TS) 3.3.3.4 and 6.9.2.

At 1245 on October 11, 1993, the primary meteorological system (MMP-3) was taken out of service for the performance of TS Surveillance 4.3.3.4, a semiannual calibration. At that time, TS 3.3.3.4 was entered since the back-up system (MMP-1) 175 ft. elevation wind direction indicator (MM-2A-MI) was out of service due to inconsistent wind direction indications relative to the 33 ft. and 175 ft. primary system wind direction indications.

Performance of the semiannual calibration surveillance procedure is normally expected to require about 80 hours9.259259e-4 days <br />0.0222 hours <br />1.322751e-4 weeks <br />3.044e-5 months <br />. Completion of the procedure was substantially extended due to unforeseen complications, including a radio frequency module failure. At 0545 on October 19, 1993, the primary meteorological system 175 ft. elevation wind direction instrumentation was restored to normal operation, thus exiting TS 3.3.3.4.

This report is being written because the wind direction instrumentation located at the 175 ft. elevation was inoperable for more than seven days.

The significance of this event was minimal since the 33 ft. elevation data, which was operable, is primarily used in offsite dose calculations.

Further actions planned by FPC include the relocation of the meteorological system specification from TS to the Offsite Dose Calculation Manual.

Appropriate procedural revisions will allow the plant computer to be utilized as an alternate source for meteorological data.

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