ML18348A630

Abnormal Occurrences 75-21 and 75-22. AO 75-21, Involved a Reduced Concentration of Boric Acid in the Safety Injection Tanks. AO-75-22, Involved the Failure of High-Pressure Safety Injection Valve MOV-3007

ML18348A630
Person / Time
Site:	Palisades
Issue date:	09/15/1975
From:	Slade G Consumers Power Co
To:	Baker K NRC/RGN-III
References
AO-75-21, AO-75-22
Download: ML18348A630 (4)

Text

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')f.t' FAILED CROM CLUTCH. THE PLANT.WAS TAKEN Off ..

RF:P."1I:1ED A'\JD PLANT RETURNED TO SERVICE LATE THE ..

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REGION III 79' RG0SEVELT ROAD GLEN ELLYN, IL c/,o/.3/

SUBJECT:

PALISADES PLANT 0 A&Nl9RMAl.

THIS IS TO INFORM YOU OF Twe ABNORMAL ©CCURRENCES WHICH TG0K PLACE AT THE PALISADES PLANT OVER THE LAST WEEKEND., THE FIRST " 1 ' *;.,,J..., INVOLVED A REDUCED CONCENTRATION CF ACID IN THE SAFETY w --** sF-1201 <Ftf.fbECTI©N TANKS.. THE CONCENTRATI©NS WERE M!OUT 20 FPM BEL@W

[f fr THOSE REQUIRED BY TECH SPECS. THE SECGND OCCURRENCE INVOLVED THE FAILURE OF HIGHePRESSURE SAFETY INJECTION VALVE M@V-3007., FLOW CSULD EE DEMONSTRATED THRGUGH THE VALVE; THEREFelRE, WE HAVE ALIGNfl1ENT SUCH THAT THE REDUNDANT HIGH-PRESSURE SAFETY INJECT ION SYSTEM IS BEING UT IL I ZED AS A REPLACEMENT FOR THE NORMAL PATH. WE FEEL THAT THIS MEETS REQUIREMENTS

©F TECH SPECS. FURTHER INF©RMAIIIDN ON B0TH GF THESE eCCURRENCES WILL DE TRANSMITTED WITHIN THE REQUIRED 10 DAYSo G I SLADE PALISADES FLANT POWER CDMPANY (_ SF-1201 (1eft ..,J. '. I .

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799 ROOSEVELT ROAD DATE: DID. Cf// J?_ TI:n7. ___ GLEN ELLYN, ILL 60137 ATTEMPT.S

'l-*o SUBJ-PALISADES PLANT ABNORMAL OCCURRENCES 75-21 AND 75-22 THIS IS TO CONFIRM VERBAL NOTIFICATION TO MR K.R BAKER OVER THE PAST WEEKEND CONCERNING TWO ABNORMAL OCCURRENCES AT PALISADES FOLLOWS--BORON CONCENTRATION WAS FOUND TO BE ABOUT 1700 PPM IN *u SIRW TANK AND SI BOTTLES AS OPPOSED TO TECHNICAL SPECIFICATIONS LIMIT OF 1720 PPM. ALL TANKS WERE BORATED TO ABOVE 1720 PPM WITHIN 12 HOURS OF SAMPLE CAUSE IS SPECULATIVE AT THIS TIME SINCE SIRW TANK WAS TOO FULL TO BE DILUTED FOLLOWING A 1770 PPM SAMPLE TAKEN THREE DAYS PRIOR. INVESTIGATION CONTINUES AND DETAILS WILL FOLLOW IN 10 DAY REPORT *. AO 75-21 -HIGH PRESSURE SAFETY INJECTION VALVE MOV-3007 WAS FOUND INOPERABLE WITH THE DISK APPARENTLY SEPARATED.

WE HAVE SWITCHED TO THE REDUNDANT HPSI HEADER AND THE ASSOCIATED VALVES WHICH OPERATE AUTOMATICALLY ON SIS SIGNAL. THE VALVE WILL BE DISASSEMBLED AND *FAILURE ANALYZED AT THE NEXT COLD SHUTDOWN.

J G LEWIS SF-1201 (RS-69) CONSUMERS POWER COMPANY END JC NNNN .. .. -*. I a .. ---I fl @ 8 A. UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT REGION Ill IE Inspection Report Transmittal Date Distribution:

IE Chief, FS&EB IE:HQ (5) DR Central Files Regulatory Standards Licensing (13) IE Files 799 ROOSEVELT ROAD GLEN ELLYN, ILLINOIS 60137 No. Distribution:

IE Chief, FS&EB lE:HQ (4) L:D/D for Fuels (3) DR Central Files IE Files IE Chief, M&PPB & L:D/D for Reactor Materials Project B. IE Inquiry Report No. Transmittal Date Distribution:

IE Chief, FS&EB IE:HQ (5) DR Central Files Regulatory Standards (3) Licensing (13) IE Files Distribution:

IE Chief, FS&EB IE:HQ DR Central Files IE Files C. Incident Notification From: Consumers Power CmWcany *. SOB. (Licensee

& Docketo. (or Li:Se No.) Transmittal Date Distribution:

IE Chief, FS&EB IE:RQ (4) Licensing (4) DR Central Files IE Files Sept. 23, 1975

• Palisades Plant Distribution:

IE Chief, FS&EB IE:HQ (4) L:D/D for Fuels & Materials DR Central Files IE Files