ML17219A666

Special Rept:On 870528,city Water Tank 1B Declared Inoperable for More than 7 Days in Violation of Tech Specs to Perform Necessary Maint.Caused by Necessary Repairs to Protective Coating Sys to Prevent Further Corrosion

ML17219A666
Person / Time
Site:	Saint Lucie
Issue date:	07/01/1987
From:	Woody C FLORIDA POWER & LIGHT CO.
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
L-87-278, NUDOCS 8707060691
Download: ML17219A666 (3)

Text

REGUL*TO> INFORMATION D ISTR I BUT lON > STEM ( R I DS 3 ACCESSION NBR:8707060691 DOC. DATE: 87/07/01 NOTARIZED: NO DOCKET FACIL: 50-335 St. Lucie Plant> Unit 1> Florida Poeer 8c Light Co. 05000335 50-389 St. Luci e Plant. Unit 2> Florida Poeer Zc Light Co. 05000389 AUTH. NAME AUTHOR AFF ILIATION NOODY> C O.~ Florida Poojer Light Co.

Zc RECIP. NAME RECIPIENT AFFILIATION Document Control Branch (Document Control Desk)

SUBJECT:

Special rept: on 870528> cit eater tank 1B declared inoperable for more that 7days limited alloUjed by Tech Specs to preform necessary maint. Caused by sandblasting oW tank inner shell Zc evaluated corrosion p itting.

DISTRIBUTION CODE: IE2ZD CQPIES RECEIVED: LTR ( ENCL TITLE: 50. 73 Licensee Event Report (LER>> Incident Rpt>

Q etc.SIZE:

NOTFS:

RECIPIENT COPIES RECIP IENT COPIES ID CODE/NAME LTTR ENCL ID CODE/NAME LTTR ENCL PD2-2 LA 1 1 PD2-2 PD 1 1 TOUR IGNY> E 1

'CRS 1NTERNAL: ACRS MICHEl SON 1 1 MOELLER 2 2 AEQD/DOA 1 AEOD/DSP/ROAB 2 2 AEOD/DSP/TPAB 1 DEDRO 1 1 NRR/DEST/ADE 0 NRR/DEST/ADS 1 0 NRR/DEST/CEB 1 1 NRR/DEST/ELB 1 NRR/DEST/ICSB 1 NRR/DEST/MEB 1 1 NRR/DEST/MTB 1 NRR/DEST/PSB 1 NRR/DEBT/RSB 1 NRR/DEST/SGB 1 NRR/DLPG/HFB 1 1 NRR/DLPG/GAB 1 1 NRR/DOEA/EAB 1 1 NRR/DREP/RAB 1 NRR/DREP/RPB 2 2 N RARMA LRB 1 NRR/PMAS/PTSB 1 1 REG F 02 1 RES DEP Y GI 1 RE > J 1 RES/DE/EI B 1 1 RGN2 FILE 01 1 1 EXTERNAL: EGe<r GROH. M 5 5 H ST LOBBY NARD 1 LPDR 1 NRC PDR 1 NSIC HARRIS> J 1 NSIC NAYS> G 1 TOTAL NUMBER OF COPIES REQUIRED: LTTR 44 ENCL 42

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cJJ P, < 14000, JUNO BEACH, FL 334IOB FLORIDA POWER 8 LIGHT COMPANY god ) l98t L-87-278 IO CFR 50.4 U. S. Nuclear Regulatory Commission Attn: Document Control Desk D. C. 2055S 'ashington, Gentlemen:

Re: St. Lucie Units I and 2 Docket Nos. 50-335 and 50-389 Special Report Date of Event: May 28, l987 IB Cit Water Stora e Tank The attached Special Report is being transmitted pursuant to the requirements of Technical Specifications 3.7. I I. I and 6.9.2. The report provides notification that the IB City.Water Storage tank was out of service for greater than seven (7) days and the actions taken to restore the tank to service.

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

Very truly yours, C. O. Woo Group Vice President Nuclear Energy COW/GRM/gp Attachment cc: Dr. J. Nelson Grace, Re'gional Administrator, Region II, USNRC Senior Resident Inspector, USNRC, St. Lucie Plant 87070bob'yl 87070>

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NRC SPECIAL REPORT IB CITY WATER STORAGE TANK INOPERABLE FOR MAINTENANCE AS ALLOWED BY TECHNICAL SPECIFICATIONS At 235I hours on May 28, l987, the IA City Water Storage Tank (CWST) was declared inoperable as part of scheduled repairs to be performed on the tank.

Recent inspections of the IA and IB CWST performed on January 3, l987, revealed that corrosion pitting was taking place on the interior shell of the tanks. The protective coating is beginning to deteriorate and small areas are exposed to the environment. This resulted in the pitting seen in the tanks. Even though the extent of the pitting was not of immediate concern for the structural integrity of the tanks, it was recommended to repair the tank protective coating system to prevent further corrosion. The IA CWST repairs were completed on January 27, l 987. A Special Report was previously submitted by FPL letter L-87-6 I, dated February 9, I 987.

In accordance with the St. Lucie Unit I and Unit 2 Technical Specification 3.7.I I.I, this Special Report is being submitted to notify the NRC that the IB CWST has been inoperable for greater than the allowed seven (7) days. The following is the plan to restore the equipment to operable status. The reason for declaring the equipment inoperable was the maintenance repair on the IB CWST.

The tank inner shell has been sandblasted and the corrosion pitting has been evaluated by FPL Engineering and Chicago Bridge Incorporated. Weld repairs are being performed and the protective coating will be applied as soon as weld repairs are completed. The expected completion date of the tank repair is July l5, I 987. The I A CWST has remained operable to supply the redundant fire suppression system while the IB CWST is undergoing repairs.

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