ML20064E150

/03L-0 on 781007:daily Tech Spec 4.3.1.1.1.,Table 4.3-1,items 2.a & 2.b,Nuc Pwr Surveillance & Delta-T Pwr Channel Calibr Not Performed Due to Personnel Error. Supervisors Told to Perform Req Surveillance

ML20064E150
Person / Time
Site:	Millstone
Issue date:	11/06/1978
From:	Kelley J NORTHEAST UTILITIES
To:
Shared Package
ML20064E149	List: ML20064E147 ML20064E150
References
LER-78-025-03L, LER-78-25-3L, NUDOCS 7811140205
Download: ML20064E150 (1)

Text

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- LICENSEE EVENT REPORT r . .u .

(PLE ASE PRINT C3 TYPE ALL REQUIRED INPc1MATl!N)

CONTROL SLOCK: l l l l l l lh l lg 8 I c l T l M l N lS 12 Jgl150 l0 l- uCENSEhvMSER 14 l0 l0 lo 10 l- 10 10 29 lo l@l4 26 LICENSE 11TVPEl140l1 l1 l@l 5 7 CA T 58 y 3 9 LeCENSEE CODE CON *T lOlil

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60 St DOCetET NUMgER 7 s EVENT DESCRtPTION AND PROS ABLE CONSEQUENCES h l pl During a power reduction from 100% to 50%, the daily surveillance required by Technical Specification 4.3.1.1.1, 'rable 4.3-1, items 2.a and 2.b. Nuclear Power l gi The surveillance i

,o g , , and Delta -T power channel calibrations, were not performed.

[

,o,,j, requirements were completed the following day and showed all. channels to be within i

,o g y 3 specification. Similar event LER 76-32/3L I

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9 10 11 18 19 20 REVISION 7 OCCURRENCE REPORT SEQUENTIAL NO.

CODE TYPE REPORT NO.

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@ ,ajg/RO 17191 EVENT YEAR 8 In121sl M 10 l3 i M M LLJ 30 b3 d

32 23 24 24 27

_2n 22 S St IT D POR 8. SUP I MAN FACTURER TA N ACT ON PL NT utTh HOURS

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de 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS I

, o ] The required calibration was not performed due to personnel error in assuming that performance of this calibration of nuclear instruments during a Xenon transient y caused by a power reduction would result in an actual instrument decalibration. I lil?I l It was emphasized in writing to all Shift Supervisors and Supervisory Control Operatorp Li ' aJ l that this surveillance is to be performed regardless of Xenon transients. l

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80 T S 9 DIS O Y OtSCOVERY QESCRIPTION ST $  % POWER OTHER STATUS

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', i s [_E_j@ l 1 l 0 l 0 l@l NA I l ACtiveTV CO TENT LOCATION OF RELEASE RELEASE OF RELEASE AMOUNT OP ACTivtTV NA l

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PERsONNst E=POsOEs NuneER TveE OttCRIPTION 1

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' PERsO~Na'iN;u'4Es NUMBE R DESCRIPTION - I NA i a 101010 l@l d L SSOFOR0 AGE TO FactLITY

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- PusteC Tv 2 O 155U E OESCRIPTION l NA I I I l l 111111 I I 80I.

68 69 7 8 9 to

. . KelleY PHONE: 203 447-1791 NAME OF PREPARER

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