ML19317G023

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RO-76-06:on 760409,review of Surveillance Records Revealed 10 Instances Where Power Range Amplifier Not Calibr Per Tech Specs Table 4.1.1.Caused by Possible Data Error Resulting in False Indications.Data Output Corrected
ML19317G023
Person / Time
Site: Rancho Seco
Issue date: 04/26/1976
From: Colombo R, Eisenhuth F
SACRAMENTO MUNICIPAL UTILITY DISTRICT
To:
Shared Package
ML19317F930 List:
References
NUDOCS 8002210727
Download: ML19317G023 (1)


Text

l UCENSEE EVENT REPORT CONTROL BLOCK:l l

l l

l l

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[PLEASE PRINT ALL REQUIRED INFORMATION) 1 8

AME LEENSE NUMBER E

TV l C l A l Rl Sl Sl 1l l 0 l 0 l-l 0l 0l 0l 0l0 l-l 0 l 0 l l 4l 1l1l 1l 1l l 0l ? l 1

7 89 14 15 25 28 30 31 32

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CATEGORY T

S DOCKET NUMBER EVENT OATE REPORT DATE hCONT l P l 0 l l Ll lL l l0 l 5 l 0 l-l 0 l 3l 1l 2l l0 l 4 l 0l 9l 7l 6l l0 l4 l2 l 6 l 7l 6l 7 6 57 58 59 60 61 68 69 74 75 80 EVENT DESCRIPTION HE I Review of surveillance records revealed 10 instances where a power range amplifier (s) l i

7 89 80; i gg l was not calibrated in accordance with Technical Specifications Table 4.1-1.

In 9 l] l 7 89 80' EE ! cases the difference between indicated neutron power and core thermal power requiring l 7 89 80-h l the calibration was in a conservative direction.

In the other case, two channels l5 7 89 60 HG l were within acceptable tolerances in the 2 out of 4 logic.

(RO 76-6).

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7 89 80 pnug DE CO E COMPONENT CODE SUPPUER R

VIOLATON O

l Il Al ]

[ Il Nl SlT l R l Ul pl l Zl 9l'9l 9l

]

7 89 10 11 12 17 43 44 47 48 g

cal.tSE DESCRIPTION

'9 l Possible data error resulting in false indication of difference in power indications l-O 7 89 807 DE I and misint rpretation of Technical Specification requirements.

Correct data output l

7 89 80' 1O l specified. and requirements clarified.

j.

's*TAE

% POWER QTHER STATUS Os VERY OGCOVERY DESCPipTON h

lFl l 1l 0l 0 l l NA l

lB l l

NA l

7 8 9

10 12 13 44 45 46 80 ACTMTY CONTENT RELEASED OF AELEASE AMOUNT OF ACTMTY LOCATON OF RELEASE

'f H

IZl 0l NA l

l NA l

7 8 9

10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRipTON DE l 0l (j 0 l yl NA l

7 89 11 12 13 80.

PERSONNEL INJURIES NUMBER DESCRIPTON gg l 0l 0 l 0 l l

NA l

7 89 11 12 80 OFFSITE cot: SEQUENCES BE l Minimal l_

7 89 80 -

LOSS OR OAMAGE TO FACIUTY j

TYPE DESCRIPTON gj ]

l NA l

7 89 10 80 PUBLICITY H l Sacramento " Bee" and " Union" were notified April 27, 1976 l"

7 89 80 _{

80 ADDITIONAL FACTORS l

l--

89 80 BE I i_.

7 89 80 R.W. Colombo /F.T. Eisenhuth (916) 452-3211 NAME:

PHONE:

GPO 889 687 m