ML20136C688

Responds to Ke Suhrke 790414 Memo,Instruction 461,re Relief Valve Performance.Forwards Tables Providing Electromatic Relief Valve Open/Close Times,State of Fluid Passing Through Valve,Flow Rate & Integrated Flow

ML20136C688
Person / Time
Site:	Crane
Issue date:	04/15/1979
From:	Bonaca M, Coad R, Vosburgh R BABCOCK & WILCOX CO.
To:	Suhrke K BABCOCK & WILCOX CO.
References
TM-0950, TM-0955, TM-950, NUDOCS 7910010520
Download: ML20136C688 (5)

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TMI DOCUMENTS DOCUMENT NO:

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S' COPY MADE ON OF DOCUMENT PROVIDED BY METROPOLITIN, EDISON COFJANY.

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'[TH5'k}ABCOCK&WILCOXCOMPANY INSTRUCTION #461 POWER GENERATION GROUP To l

K. E. SUHRKE

.. roen M. V. BONACA/R. O. VDSBURGH/R. B. C0AD

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RESPONSE TO SITE REQUEST ON RELIEF:

VALVE PERFORMANCE APRIL 15,,1979,

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IN RESPONSE TO YOUR MEMO (INSTRUCTION NO. 461), THE ATTACHED TABLE PROVIDES THE ELECTR0MATIC RELIEF VALVE OPEN/CLOSE TIMES, STATE OF THE FLUID PASSING THROUGH THE VALVE, FLOW RATE AND INTEGRATED FLOW.

IT MUST BE CAUTIONED THAT THIS SEQUENCE IS BASED ON DATA INTERPRETATION AND IS NOT SUBSTANTIATED

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BY ALARM OR UTILITY PRINTOUT (NOT AVAILABI.E). THE AMOUNT OF RADI0 ACTIVITY

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PASSED THROUGH THE VALVES CAN BE ASSUSED TO BE ZERO (0) UP UNTIL TIME 24 HOURS AFTER TURBINE TRIP. THE ACTIVITY LEVEL IN THE COOLANT AFTER THE TIME'IS SHOWN IN THE ATTACHED TABLE. NO RELIEF OCCURRED AT ANY TIME THROUGH THE CODE i

SAFETY VALVES.

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TH BABC0CK & WILCOX COMPANY INSTRUCTIONNO.45[

POWER GENERATION. GROUP

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V. BONACA From K. E. SUHRKE i

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SITE REQUEST FOR INF0 ON RELIEF)ALVE PE.RFORMANCE 4/14/79 2230 g v u. i....,........... o.-.........,w.a -ir.

LIBBY SCHLOMER CALLED D. W. BERGER AT 2115 ON APRIL,14 REQUESTING INFORMATION ON THE ELE

.ATIC' AND CODE RELIEF VALVES DURING THE INITIAL PERIOD OF THE TRANSIENT.

m THIS INFORMATION IS NEEDED TO SUPPORT A MEETING WITH THE NRC TOMORROW MORflING.

SPECIFIC INFORMATION REQUESTED INCLUDES:

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1.

WHAT IS THE TIfE HISTORY OF THE ELECTR0!% TIC AND CODE RELIEF VALVES? INFOR-MATION ON OPENING AND CLOSING TIMES IS DESIRED, AS WELL AS THE STATE (WATER

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OR STEAM).0F FLUID PASSING THROUGH THE VALVES.

WHAT IS THE ESTIt%TED' FLOW IEATE AND INTEGRATED FLOW THROU 2.

1 THROUGH THE CODE RELIEF?

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WHAT IS THE ESTIMATED RADIOACTIVITY LEVEL OF THE FLUID PASSING THROUGH THE YALVES?

PLEASE RESPOND VERBALLY TO LIBBY OR TO JIM GEDDINGS AT (717)-367-4887 AND BE SURE WE UNDERST.JD ALL THE. DESIRED INFORfMTION.

PLEASE DOCUMENT THE INFORfMTION TRANSMITTED FO'R SUBSEQUENT FORMAL TRANSMITTAL.

MAY I HA.VE YOUR DOCUMENTED INFORMATION BY 4:00 A,M ON APRIL 15. PLEASE REFERENCE THE INSTRUCTION NUMBER AB0VE.

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