ML17252B021

Letter Confirming a 09/25/1972 Conversation Concerning High Flow Switches on the Isolation Condenser Being Out of Calibration - Dresden Unit 3

ML17252B021
Person / Time
Site:	Dresden
Issue date:	09/25/1972
From:	Worden W Commonwealth Edison Co
To:	Grier B US Atomic Energy Commission (AEC)
References
Download: ML17252B021 (3)

Text

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I I LD001 TOVE MORRIS ILLINOIS SEPTEMBER 25, 1972 10:35AM.

BOYCE GRIER, DIRECTOR DIVISION OF COMPLIANC[

REGION 3 U.S. ATbMIC ENERGY COMMISSION 799 ROOSEVELT ROAD GLEN ELLYN !LLINOIS 60137 SUBJECT DPR-25 DRESDEN NUCLEAR POWER STATION UNIT 3 THIS WILL CONFIRM THE CONVERSATION WITH H. DANCE OF YOUR OFF IGE AT 0915 HOURS TH IS DATE CONCERN !f'.IG HIGH FLO\!J SWITCHES ON THE ISOLATION CONDENSER BEING OUT OF CAL I BRAT ION. mJ 9 . 22 72 A FOUT I NE THREE MONTH C/\L I E3Rl\ TI mJ

\tJ.A.S PERFORMED m~ THE Hl GH FLOV*.1 ISOLATION SVJ ITCHES. /\LL FOUR SV! ITCHES SET PO I ~ns \riERE FOUND GREP.TER THAil THE LIMIT IN~TABLE 3.2.1. OF THE TECHNICAL SPECIFICATIONS.

THE HIGH STEAM FLOW SWITCHES, DPIS 3-1350 A&B, WERE FOUND SET AT 426.5 AND 435.5 INCHES OF WATER. THE LIMIT WU 1201 (R 5-69)

IN TABLE 3.2.1. CORRESPONDS TO 425 INCHES OF WATEF ,. ~

• THE HIGH CONDENSATE FLOW SWITCHES, OPIS 3-1349 A&B. WERE FOUND SET AT 33.:?1 AND 33.5 INC~ES CF ltJATER. THE Ll,MIT I ~J Ti\OLC: 3. 2.1. IN 32 I NCH ES OF WATER.

SWITCHES DPIS 3-1350 A&B WERE RESET TO 416.5 AND 417.5 INCHES OF WATER. SWITCHES DPIS 3-1349 A&G WERE RESET TO 29.9 ANO 30.1 INCH~S OF WATER. PRESENT PLAN ARE TO i CHANGE THE AS LEFT SETTINGS ON THESE SWITCHES TO A LOWER, VALUE Ai THE Nt:XT CALIBRATION. "

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\f.J. P. ~vORDEN, SUPER It.JTENDENT DRESDEN NUCLEAR POWER STATION WU 1201 (R 5-69)

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R B TWX 624 USAEC HQS GTWN - I WU WSH TLXA226 (47)DEA064 KA2'48 K VEC134 PDF TOVE MORRIS ILL 25 1035A CDT EDWARD J BLOCH ACTING DIRECTOR DIRECTORATE OF LICENSING

, US ATOMIC EN.ERGY COMM *WASHDC 20545 SUBJECT DPR-25 DRESDEN NUCLEAR POWER STATION UNIT 3 THIS WILL CONFIRM THE CONVERSATION WITH MR'~ DANCE OF YOUR OFFICE AT 0915 HOURS THIS DATE cdNCERNING HIGH FLOW SWITCHES ON THE ISOLATION .CONDENSER BEING OUT OF bALIBRATION. ON 9/22/72 A ROUTINE THREE MONTH CALIBRATION WAS ~ERFORMED ON THE 1 HIGH FLOW ISOLATION SWITCHES. ALL FOUR SWITCHES SET POINDS WERE FOUND .GREA'TER THAN THE LIMIT IN. TABLE 3.2.l OF THE TECHNICAL

. SPECIFICATIONS. THE HIGH STEAM FLOW SWITCHES, DPIS 3-1350 A&B WERE FOUND SET AT 426.5 AND 345.5 INCHES OF WATER. THE LIMIT IN TABLE.3.2.1 CORRESPONDS TO 425 INCHES 'OF WATER. THE HIGH CONDENSATE FLOW SWITCHES. DPIS ~-1349 A&B WERE FOUND SET AT 33.3 AND 33.5 INCHES OF WATER. THE LIMIT IN *TABLE 3.2.1 IN 32 'INCHES OF WA.TER - . ' I

'"'.'*.;.-:~'?;.::£>'.*'.;;,;.;f::'swITCHES DPIS 3-1350 A'&B WERE 'RES°E'T TO. 416.5 AND 417.5 INCHES OF WATER. SWITCHES POIS 3-1349 A&B WERE RESET TO 2~.9

. AND 30.1 INCHES OF WATER-. PRESENT PLAN ARE TO CHANGE THE AS

• LEFT SETTINGS ON THESE SWITCHES TO A LOWER.VALUE AT THE* NEXT CALIBRATION /

W P WORDEN SUPT DRESDEN NUCLEAR POWER STAT ION 1

4XX 522PEDT USAEC HQS GTWN

-z 1972 SEP 25 PM 5 30 USAEC HQS GTWN

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• TLXA226 C47>DEA064 KA248

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K VEC134 P-DF TOVE MORRIS .ILL . .;._,

25 1035A COT

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.EDWARD J BLOCH ACT:ING DIRECTOR, DIRECTORATE OF LICENSIN.G

• US . . .. ..

ATOMIC ENERGY " . , ~~ _, . '......

COMM WASHDC .

20545 SUBJECT DPR-25 DRESDEN NUCLEAR POWER STATION UNIT 3 THIS WILL

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CONFIRM THE CONVERSATION

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• WITH MR~- H DANCE . ' -:. -

OF' . * *

• YOUR ,

OFFICE **** ._.

AT 0915 HOURS ~HIS DATE CONCERNING HIGH FLOW SWITCHES ON THE

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ISOLATION

( - CONDENSER ~ .

B.EING OUT OF CALIBRATION. ON 9/22/72 A

~OUTINE TH~EE_MONTH CALIB~ATION _WAS PERFORMED ON THE HIGH FLOW ISOL_ATION SWl'.fCHES* ALL FOUR SWITCHES SET POINDS WERE

. . ...... .._ ' . _ . . .. ""'* , . ~ ~-- -* '~ ' *-* .

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FO_t,JNP. GREATER THAN THE LJMI T IN TABLE 3.*2.* l __ OF THE TECHNICAL

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• SPECIF'lCATl'ONS*

.. ~ . . .. : -:-..,. .. . THE HIGH

. . . . . STEAM . *. ...... FLOW .. **- .SW-1-TCHES. . DPlS 3*1350 A&B __ WERE- fO_UND SET'. AT 426. 5 AND 345* 5 INCHES OF WAT.ER*_ THE.,

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L~M_IT IN _TABLE 3.2._1. _CORRES~9NQS TO. 4~5_ JNCHES OF WATER~ THE .

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. }i_~GH GONi;>ENSATE FL,OW SWI,i'CHES* DPI$ 3-1349 A&B WERE FOl)NO 'sET

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AT_33~~ AND 33~5 INCHES OF WATER* THE-LlMtT*I~ TABLE 3~2.t IN ~2 JNCHES OF WATER

,SWJTGHES QPIS 3:1350-A&~ WERE RESEr_:TO 416*5_AND 417.S

~NCHES OF_ WAT~.R~ SW!TCHES POIS ~:~~~9 A_&B WERE R_ESET_ TO ~9.9 ANp __ ~~~) ~-~CHES_ CW ~A!~R.,.. _P~~~~*~T PLAN ARE TO ~~~~G~ THE A-S LEf J' SET_TIN~S ON THES~ ~~I TC HES T.O A _LO~-~~ VALU_E ~T THE NEXT G.~-L.J B.RAJ l_()N

_i,J_ ~ WORDEN_ SUPT DRESDEN Nl)CLEAR POWER STATlON

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4XX __522PEOT U_SAEC H~S .GTWN

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