ML20126E364

Informs of Delays in Resizing FE2812 & FE2811 & Recalibr of FT2163 & FT2162,to Improve Indications to Operators During Range of Flows Re Core & Backup Core Spray Sys.Devices to Be Installed in First Cold Shutdown.Requests Concurrence

ML20126E364
Person / Time
Site:	Big Rock Point File:Consumers Energy icon.png
Issue date:	03/09/1971
From:	Walke G CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	Morris P, Skovholt D US ATOMIC ENERGY COMMISSION (AEC)
References
NUDOCS 8101230386
Download: ML20126E364 (3)

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9 AS DISCUSSED TODAY VITH TOUR STATT, CONSUMERS POWER COMPANY HA e,

EXPERIENCED DELAYS IN RESIZING TE2EI2 AND TE2811 AND REC TT2163 AND TT2162. THESE DEVICES ARI TO DE RIV05tKED SO THAT VILf. PROVIDE M5ANINGTUL INDICATIONS 70 THE OPIRATOR THE RANGE OT TLOVS EXPECTED OVER TXE SPICTRUM OT OPERA TIONS OF THE CORE SPRAY AND BACKUP CORI SPRAT SYSTEMS. TH

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OF r THE ORITICIS CONSISTS OF INLARGING TNI TLOV PASSAGE 50 TH WIDER RANGE OF TLOVS MAY SE OBTAINED OTER THE OPERATING R  ;

! TRANSMITTERS WILL E RIVORIED To MATCN TIE NIV ORIFICE SIZE.

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g! 4l' INESE BEVICES ERI INSTALLED TO PROTIDE BACKUP BATA TOR POSSIBLE f CORE SPRAY SYSTEM PIPI BREAKS. FT412 SHOWN ON W-123 IS THE PRIMARY M INDICATION JOR DITIRMINATION AT PROPER CORE SPR.AY SYSTIE OPE wy@).iUC3 ${e_ .' c.

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AS THESL DEVICES b # ARFr?NSTALLED

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THE ORIFICES ARE SIZED SUCH THAT THEY DO NOT HAVE A SIGNIFICANT EFFECT ON SYSTEM FLOW CHARACTERISTICS.

WE PLAN TO RETURN TO OPERATION THE LATTER PART OF THIS WEEK WITH THE CORE SPRAY AND BACKUP CORE SPRAY SYSTEMS INSTALLED AS STATED IN PRO-POSED CHANGE 27 TO THE TECHNICAL SPECIFICATIONS WITHOUT FE2812, FE2811, FT2163 AND FT2162. THESE DEVICES WILL BE INSTALLED AT THE FIRST TIME THE BIG ROCK POINT PLANT IS COOLED TO A COLD SHUTDOWN CONDITION FOR MAINTENANCE OR TESTING FOLLOWING THE RETURN TO POWER OPERATION.

PLEASE NOTIFY US IMMEDI ATELY IF YOU DO NOT CONCUR WITH THIS PLANNED COURSE OF ACTION.

GERALD J WALKE NUCLEAR FUEL MANAGEMENT ADMINISTRATOR '

l CC- R L HAUETER R B SEWELL C J HARTMAN, BIG ROCX POINT

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