ML19309G422

LER 80-018/03L-0:on 800401,Number 11 Control Room Air Conditioning Unit Taken Out of Operation for Maint.Caused by Need to Calibr Outside Air Temp Transmitter 0-TT-5350. Transmitter Calibr & Placed Back in Svc

ML19309G422
Person / Time
Site:	Calvert Cliffs
Issue date:	04/30/1980
From:	Heibel R, Rizzo P BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19309G420	List: ML19309G419 ML19309G422
References
LER-80-018-03L-01, LER-80-18-3L-1, NUDOCS 8005060276
Download: ML19309G422 (2)

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LICENSEE EVENT REPORT 8 0 05 0 6 0 2 2f,

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CONTROL BLOCK: l 1

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(PLEASE PRINT CR TYPE ALL REQUIRED INFORMATl!N)

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hse l L ]@[0 80 l 51010101311 61 DOCKET NUM8ER 17 l@l014 68 69 l'0 EVENTl118 DATE lo l@lo 1413 74 75 REPORTIn DATEla In80l@

EVENT DESCRIPTION AND FROBABLE CONSEQUENCES h 10121 I At 1030 on April 1,1980, number 11 control mom air conditioning unit was I g 51 ij l taken out of cperation for maintenance. With repairs to the pneumatic control i 10141 l system comolete the unit was returned tn <prvice at 1919 nn anr41 1, 1onn, The l IO l s i I redundant air conditioning unit was operable throuOhout this event. (T.S. 3.7.6.1) I

[5 TE'l IThis is not a repetitive event. I i

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10181 l 7 8 9 E CODE SUSC E COMPONENT CODE SUS ode SU E LO_1p_l l S I G l@ [_E_j@ LEJ @ d l N l 5 l T l R l U l@ l Tl@ lZ._j 20

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7 8 9 10 18 12 13 18 19 SEQUENTIAL OCCURRENCE REPORT REVISION

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EVENT YE AR REPORT NO. CODE TYPE NO.

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JJ 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS I

li 101 IThe reauired maintenance was calibration of nennher 11 air ennditinninn unit'e i i toutside air temperature transmitter 0-TT-5350. This pneumatic instrtunent Linhnenn f li 121 l Controls, Inc. Model T-5210) had been found to have no oradual outnut sinnal channo. I L'_L3_J lresulting in the makeuo air damoer losino ite modulatino canability The tennemit+ar I i 4 Iwas calibrated and placed back in service. I ST 5  % POWER OTHER STATUS is O Y DISCOVERY DESCRIPTION l_'_L_J LE_J@ l 110 l 0 j@l NA l [A_j@loPERAToRoRSFRVATinN I

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ACTIVITY CO TENT AMOUNT OF ACTIVaTY LOCATION OF RELEASE 1 6 RELEASE

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80. E 7 8 9 to NAME OF PREPARER R. P. HEIBELl') n_ p!ZZO PHONE: ( 301 Wo_a7Aziavec E,

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LER NO. 80-18/3L DOCKET NO. 50-317 l EVENT DATE 04/01/80 l REPORT DATE 04/30/80 '

ATTACHMENT l

CAUSE DESCRIPTION AND CORRECTIVE ACTIONS: (CONTINUED)

This instru:.ent is presently calibrated under the Preventive Maintenance Program on an annt.'l basis. No further preventive action is deemed necessary 1 at this time.

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