ML18353A854

Licensee Event Report - Improper Conversion of Flux to Power by Inca Power Distribution

ML18353A854
Person / Time
Site:	Palisades
Issue date:	11/03/1975
From:	Elward T, Slade G Consumers Power Co
To:	Baker K NRC/RGN-III
References
Download: ML18353A854 (2)

Text

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_*,;~7..,:_~M\  :,~ 1 ~'JULATORY CO~MISSION (FORMERLY AEC). 7 _,. _, quo s:~ 11i~L T ~~O.'\ :J

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        ~~jJ~cr-                           PALISADES PL4NT-IMPP00ER CONVERSION OF FLUX TO POWER BY
                                             *THE I~CA               POWER DISTRIBUT10N
        ~::r:; 'fl.*JX I*S s~~n- TO FOLLOW UP MY CONVERSATION WITH K R BAKER ON' LE: ArTE11'.'-lOON OF OCTOBER'.29.*. 1975.                                                    IT HAS NOT* YET BEEN .DETERMINED TliAT TL(E 3Ti\ICT DEFINITION FOR AN ABNORMAL OCCURRENCE                                                              INCLUDES THIS

~ .9§ c l '.'l:.. OF' or:currnf:~1CE. l-{0h1EVER. UJ\JTIL WE CAN SHOW THAT IT CLEARLY IS

      ;,JI Ar\J                      .'13~-JORMAL           OCCURRENCE. I/IE WILL _CONTINUE TO TREAT IT AS TF IT 1

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        ~ ~~~1~E CO~ST~~T IS USED TO CONVERT INCORE MILLIVOLT INFORMATION I~TJ POWER I~FanM~TIO~. WP~IME IS A FUNCTION OF BURNUP.                                                                EIGHT SIF~~RENT ~PRI~ES ARE USED FOR THE VARIOUS FUEL TYPES AND RADIAL PJSITIO~JS TJ. TH~ PAL T.SADES COHE..                                                   IT WAS DETERMINED ON OCTOBER 29.

1)75 AT 140~-~0URS THAT IMPROPER WPRIMES WE~E ENTERED INTO THE INCA *J

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       ':3I~*~c;;:::              T:1£ ;\PRIL 1975                     ST~'\:'?T-UP         THE ERROR AS A RESULT OF ERRONEOUS
      ~?Ri~ES ~~S ~E~~ CbNSE~VATIVE*KIE.                                                          HIGHER THAN ACTUAL HEAT RATES

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.e    ~ER~                   ChL~ULAT~D FOR THE CORE LIMITING                                              ASSEMBLIES>. ON OCTOBER 29.

ljJj. IT ~AS JET~RMINED THAT 'FOH JUNE 1973 THE INTE~CHANGED WPRIME CURVE:S F~S.ULTl~D TN ~ NON-CONSEi~VATIVE HEAT RATE BEING*CALCULATED

      ;-Lj~ THE CORE LI!"!!!HlG ASSEMBLIES.                                                       THIS RESULTED IN SETTING A CORE H'.~Af i\,~TE LI!'lIT ~.H!ICl-i ~!AS 2 PEHCENT LARGER THAN IT SHOULD HAVE BEEN.
      ~ 1 llJi1t: !"JET,'\ ILEO HlFORMATION                     .. \       .  . WILL
                                                                                  .          FOLLOW WITH SPECIFIC CURVES AND C~'\u.::~U'\ rIO~lS.

j a SLADE/T ~ EL0ARD f',:\LIS,'\Dr.:::; PLMlT 1 ::u~J~ju:1~:?3 PO';JF.:l~ COMPANY

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I UNITED ST A TES

                      . NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT REGION Ill 799 ROOSEVELT ROAD GLEN ELLYN, ILLINOLS   60137 Incident Notification From:          Consumers Power CompanyC-:J (Licensee & Docket No. (or-~J;icense No.)

Transmittal Date Nb.;,;:;~~Palisades Plant c==~, Distribution: Distribution: IE Chief, Fc&EB IE Chief, FC &EB IE:HQ (4) IE:HQ (4) Licensing (4) L:D/D for Fuels & Materials DR Ceµtral Files DR Central Files IE Files IE Files

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