05000318/LER-1979-022-03, /03L-0 on 790619:containment Gaseous & Particulate Radioactivity Monitoring Sys Failed.Caused by Loss of Sampling Pump.Pump Restarted After 45 Minutes.No Specific Maint Action Taken to Correct Cause of Failure

From kanterella
(Redirected from ML19241B903)
Jump to navigation Jump to search
/03L-0 on 790619:containment Gaseous & Particulate Radioactivity Monitoring Sys Failed.Caused by Loss of Sampling Pump.Pump Restarted After 45 Minutes.No Specific Maint Action Taken to Correct Cause of Failure
ML19241B903
Person / Time
Site: Calvert Cliffs Constellation icon.png
Issue date: 07/19/1979
From: Davis S, Lagiewski J
BALTIMORE GAS & ELECTRIC CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19241B900 List:
References
LER-79-022-03L, LER-79-22-3L, NUDOCS 7907250304
Download: ML19241B903 (1)


LER-1979-022, /03L-0 on 790619:containment Gaseous & Particulate Radioactivity Monitoring Sys Failed.Caused by Loss of Sampling Pump.Pump Restarted After 45 Minutes.No Specific Maint Action Taken to Correct Cause of Failure
Event date:
Report date:
3181979022R03 - NRC Website

text

,, ~..., _

mm LICENSEE EVENT REPORT

- TONTMGL BLOCK:

l l

l l

l lh (PLEASE PRINT _OR TYPE ALL REQUIRED INFORMATION) 1 6

O MI 01 c cl NI 2l@15l' O l 0l Ol 0 0 OlOI_ 01Ol@l4 i l1Ill11@l l

l@

o LICENSEE CODE 14 LICENSE NUMBER 25 26 LICENSE TYPE JO

$7 CAT 58 8 9 CCN'T oI2 sf!"CI I t l@l015 lo 10 10 13 11 18 l@l 0161 11917 I o l@l 017 l 11 ol 7 I o l@

7

_8 60 61 DOCK ET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h o

2 l At 2315 tha Unit 2 contai rmont casect.2 and particulate radioactivity monitorino l

systems failed due to a loss of the samolino cumo (T.S.3.4.6.1.).

The cumo was I

0i2 o

4 i restarted at 0001 6/20/79, returning the gaseous and particulate radioactivity I

ois I monitoring systems to service. The containment sumo level alam system remained l

0 is I ooerable during the event.

I O

7 l

0is i

I s9 80 CO E CODE SU C E COMPONENT CODE SL8 CODE S

DE l Bl Bl@ l Xl@ l X l@ l Z l Z j Z l Z l Z l Z @ l Zl@

Zl@

O 9

7 8

9 10 11 12 13 18 19 20 SEOU ENTI AL OCCURRENCE REPORT AEVISION LE R /RO EVENTYEAR REPORT NO.

CODE TvPE N

@,REgg l217l9l

__l l0l2l2l l/l l0 l3 l

[ Ll l __l l 2)l 22 23 24 26 27 28 29 30 31 6 3:

TAKEN ACT ON ON PLANT MET HOURS 22 s SMI O

FOR B.

su" lN[g lNjg lIIElg l1 lU9l9[9lg

    • AN ACTURER Z jgl34Z lg l35 Z lg l36Zjg l0l0l0l l

37 40 41 42 43 44 47 3J CAUSE DESCRIPTION ANO CORRECTIVE ACTIONS h l As stated above, ouro was restarted acoroximately 45 minutes after it stopced; no a

I specific maintenance action had been taken to determine or correct the cause of the i

failure.

It is supposed that a spurious high flow signal occurred causing the nJnninai

,,, i pump to trip and preventing the backup pump from starting. Since the exact initiating 3

event could not ce duplicated, no further maintenance action could be taken.

i i

7 8 9 80

$TAk@ ll08ER 0lgl Sk"ER STATUS dis T jgl Operator dEservaElon RY D

VERY D QRIPTION ls ~ l l

l l

1

'8 8

ACTIVITY CO TENT

"']'f'l"'i'l^f'

^" ""M'*" " " O l l

NA l

e PERso~~Et ExPossEs DesCR,PT,0N@

3

~UoeER TvPe lZlZlZl@lZl@l NA l

i 7

$o PERso~~E t IN;u'J,Es DEsCRiPnON@ NA

~ uo n R l 0l 0 0l@l l

a 13 8.9 11 12 go

' ?e ' Us'C"^ M " '" @

7907250W/,

Tv P

Zl@l NA l

i 9

7 8 9 10 B0 issVEf@DE CRIPTION i

l N l

NA

- ( ~

e l

llllllllli il lj 2

o 7

8 9

  • O 68 69 80 g J

S. M. Davis /J. S. Lagiewski (301) 234-7942 o

NAME OF PREPARER PHONE: