ML19208A083

LER 79-058/03L-0:on 790810,during Normal Operation,Core Spray RHR Pump Running Annunciator Energized W/No Pumps Running.Caused by Malfunction of Pressure Switch E-11-PS-No20A,due to Condensation in Switch Assembly

ML19208A083
Person / Time
Site:	Brunswick
Issue date:	09/07/1979
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19208A082	List: ML19208A081 ML19208A083
References
LER-79-058-03L-01, LER-79-58-3L-1, NUDOCS 7909120508
Download: ML19208A083 (1)

Text

NHC FoH 6 * *

(7 7J)

LICENSEE EVENT REPORT CONTROL BLOCK: l 1

l l l l l lh 6

(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) lo l1l8 9l Nl Cl 7

Bl E l Pl 1l@l15 0 l 0l -

LICENSES CODE 14 0 0l0l0l0l-l0]0l@l4l1l1l1l1l@l LICENSE NUMBER 26 26 LICENSE TYPE 30 l

57 CAT 58 CON'T o

7 1

8 En"$ 60l L @l 0l 5 l 0DOCK G1 l -ETlNUM8ER 01 3 l 2 l 685 @l 69 0 ]EVENT 8 l DATE 1 l 0 l 7 l 9 75@l 0l 74 9 0lDATE REPORT 7l 7l 9l@ 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h o 2 lDuring normal operation, the operator noticed that the " Core Sprav/RHR Pumo Running" I o 3 jannunciator was energized with no pumps running. I o 4 iTechnical Specification 3.3.3, 6.9.1.9b 10151 1 1 0 6 l l o!7 l l 0 a i l DE CODE SL8C E COMPONENT CODE SL8 CODE SU E O 9 s lv l@ LoJ@ La_l@ I t IN i s Ir l R i uj@ U@ W @ 13 19 20 7 8 9 10 11 12 18 SEcuENTI AL 0:CURRENCE REPOR7 REVISION LE R> Ro VENT YEAR REPORT NO. CODE TYPE NO.

h RE, yu l7l9l t,,,,, 21 22

[--J 23 l0l5l8l 24 26 l/l 27 l 0] 3l 28 29 30 Ll l-l 31 W32 K N AC O ON PL NT MET HOURS S 8 1 D FOR1 8. SUPPLIE MANUFACTURER l33X l@l34Z l@ 35 Zl@ lZl@

36 l0l0l0l0l 31 40 lNl@

41 42 Yl@ l43N ]@ l44G l 0 l 8 l 047 l@

CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h 1 o l An investigation revealed that pressure switch E11-PS-t:020A, was malfunctionine due tol i i leondensation in the switch assembiv. The cover to the switch box housing was loose. 1 I i l 21 IThe microswitch was replaced, the housing dried and cler.ned, and the instrument was calf y l11brated and returned to service. This LER will be reviewed bv all I&C personnel to l m l emphasize the need to install switch box housing covers tightiv. I 7 8 9 80 ST  % POWER OTHER STATUS DlS O RY DISCOVERY DESCRIPTION FiTsl (C_J@ l 0121 Ol@l NA l W@l Operator Surveillance l ACTIVITY CO TENT RELEASED OF RELEASE AMOUN r OF ACTIVITY LOCATION OF RELEASE QW7 8 9

@ W@l NA 10 11 44 l l 45 NA 80 PER ' JENEL EXPOSURES NUMBER TYPE DESCRIPTION lil7ll0 0 l0 l@l Zlhl NA ' '

l PE RSONNe't%u' RIES NUMBER DESCRIPTION Rl0 7 8 9 l 0 l 0 l@l NA 11 12 80 l

LOSS OF OR DAMAGE To FACILITY O y l Z l@l NA TYPE DESCRIPTION 6 4'%

909120Sep l 7 8 9 10 80 D

• ISSU ED 2 o Whl ESCRIPTION NA lllllllll ll}

7 8 9 10 68 69 80 5 NAME OF PREPARER PHONE: