ML17221A687

Special Rept:On 880314,steam Generator Blowdown Bldg Exhaust Noble Gas Radiation Monitor Failed.Caused by Failed Central Processing Unit Processor Board.Portable Particulate,Iodine & Noble Gas Monitor Installed Until New Monitor in Place

ML17221A687
Person / Time
Site:	Saint Lucie
Issue date:	03/25/1988
From:	Conway W FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
L-88-146, NUDOCS 8803290210
Download: ML17221A687 (4)

Text

ACCELERATED D1SPUTION DEMONSTRA'g)N SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)

ACCESSION NBR:8803290210 DOC.DATE: 88/03/25 NOTARIZED: NO DOCKET FACIL:50-335 St-. Lucie Plant, Unit 1, Florida Power & Light Co. 05000335 50-.389 St. Lucie Plant, Unit 2, Florida Power & Light Co. 05000389 AUTH. NAME - AUTHOR AFFILXATION CONWAY,W.F. Florida Power & Light Co.

RECIP.NAME'ECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

SUBJECT:

Special rept:on 880314,steam generator blowdown bldg exhaust noble gas radiation monitor out of svc.

DISTRIBUTION CODE: IE22D COPIES RECEIVED:LTR ENCL SIZE: I TITLE: 50.73 Licensee Event Report (LER), Incident Rpt, etc. D NOTES:

8 RECIPIENT COPIES RECIPIENT COPIES ID CODE/NAME LTTR ENCL XD CODE/NAME LTTR ENCL PD2-2 LA 1 1 PD2-2 PD 1 1 TOURIGNY,E 1 1 INTERNAL: ACRS MICHELSON 1 1 ACRS MOELLER 2 2 D

AEOD/DOA 1 1 AEOD/DSP/NAS 1 1 AEOD/DSP/ROAB 2 2 AEOD/DSP/TPAB 1 1 ARM/DCTS/DAB 1 1 DEDRO 1 1 NRR/DEST/ADS7E4 1 0 NRR/DEST/CEB8H7 1 1 NRR/DEST/ESB 8D 1 1 NRR/DEST/ICSB7A 1 1 NRR/DEST/MEB9H3 1 1 NRR/DEST/MTB 9H 1 1 NRR/DEST/PSB8D1 1 1 NRR/DEST/RSB 8E 1 1 NRR/DEST/SGB 8D 1 1 NRR/DLPQ/HFBlOD 1 1 NRR/DLPQ/QAB10A 1 1 NRR/DOEA/EAB11E 1 1 NRR/DREP/RAB10A 1 1 NRR/DREP/RPB10A 2 2 NRB+)RIS SIB9A1 "1 1 NRR/PMAS/ILRB12 1 1 02 1 1 RES TELFORD,J 1 1 RES/DE/EXB 1 1 RES/DRPS DIR 1 1 RGN2 FILE 01 1 1 EXTERNAL: EG&G GROH,M 4 4 FORD BLDG HOY,A 1 1 H ST LOBBY WARD 1 1 LPDR 1 1 NRC PDR 1 1 NSIC HARRIS,J 1 1 R NSIC MAYS,G 1 1 l

A

.TOTAL NUMBER OF COPIES REQUIRED: LTTR 45 ENCL 44

P. O. BOX 14000, JUNO BEACH, Pt 33408.0420 MARCH 2 5 f988 L-88-146 Tech Spec 6.9.2 U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, D. C. 20555 Gentlemen:

Re: St. Lucie Units 1 and 2 Docket Nos. 50-335 and 50-389 Special Report Date of Event: March 14, 1988 Steam Generator Blowdown Building Exhaust Noble Gas Radiation Monitor Out of Service The attached 14 day Special Report is being transmitted pursuant to the requirements of St.Lucie Unit 1 Technical Specification'.3.3.1, Table 3.3-6, 2.c.ii, Action Statement 15, and Unit 2 Technical Specification 3.3.3.1, Table 3.3-6, 2.c.iii, Action Statement 27 and pursuant to Technical Specification 6.9.2. The report provides notification that the Steam Generator Blowdown Treatment Facility Building Exhaust System, Noble Gas Radiation Monitor was out of service for greater than fourteen (14) days, the cause of the inoperability and the plans and security to restore the system to service.

Should there be any questions on this information, please contact us.

Very truly yours, Acting Group Vice President Nuclear Energy WFC/GRM/gp Attachment cc: Dr. J. Nelson Grace, Regional Administrator, Region II, USNRC Senior Resident Inspector, USNRC, St. Lucie Plant6 GRM23'. SR 8803290210 880325 PDR ADOCK 05000335 S DCD an FPL Group company

SPECIAL REPORT STEAM GENERATOR BLOWDOWN RADIATION MONITOR OUT OF SERVICE DUE TO COMPONENT FAILURE This Special Report is being submitted pursuant to the requirements of St. Lucie Unit 1 Technical Specification 3.3.3.1, Table 3.3-6, 2.c.ii and St. Lucie Unit 2 Technical Specification 3.3.3.1, Table 3.3-6, 2.c.iii.

On March 14, 1988, at 1630 hours0.0189 days <br />0.453 hours <br />0.0027 weeks <br />6.20215e-4 months <br />, the Steam Generator Blowdown Building Noble Gas Radiation Monitor was determined to have failed.

The cause of the failure was determined to be a failed central processing unit processor board. The monitor was manufactured by Nuclear Measurement Corporation, Model GA2-TMO. This particular monitor is now obsolete, and can no longer be repaired due to the unavailability of spare parts.

In accordance with Technical Specifications, an alternate means of radiation monitoring was initiated. At 1100 hours0.0127 days <br />0.306 hours <br />0.00182 weeks <br />4.1855e-4 months <br /> on March 16th, a portable General Atomics Particulate, Iodine and Noble Gas (PIG) monitor was installed.

A plant change/modification package which provides for the installation of a permanent General Atomics PIG unit, Model RM-80, has been approved by the sit'e Safety Review Group and is ready for implementation.

The portable General Atomics Unit will be in place until the installation of the new monitor is completed, which is scheduled for completion no later than October of '1988.