05000317/LER-1980-048-01, /0LT-0:on 800903 During Maint for Control Room 12 Air Conditioner,Unit 11 Compressor Was Not Running & Later Tripped on Overload.Faulty Reset Switch Replaced & Procedures Revised to Require Check of Air Conditioner

/0LT-0:on 800903 During Maint for Control Room 12 Air Conditioner,Unit 11 Compressor Was Not Running & Later Tripped on Overload.Faulty Reset Switch Replaced & Procedures Revised to Require Check of Air Conditioner

ML19338D637
Person / Time
Site:	Calvert Cliffs
Issue date:	09/17/1980
From:	Pence W, Wenderlich R BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19338D622	List: 05000317/LER-1980-048, Forwards LER 80-048/01T-0 05000317/LER-1980-048-01, /0LT-0:on 800903 During Maint for Control Room 12 Air Conditioner,Unit 11 Compressor Was Not Running & Later Tripped on Overload.Faulty Reset Switch Replaced & Procedures Revised to Require Check of Air Conditioner
References
LER-80-048-01T, LER-80-48-1T, NUDOCS 8009230592
Download: ML19338D637 (1)

LER-1980-048, /0LT-0:on 800903 During Maint for Control Room 12 Air Conditioner,Unit 11 Compressor Was Not Running & Later Tripped on Overload.Faulty Reset Switch Replaced & Procedures Revised to Require Check of Air Conditioner

Event date:
Report date:
3171980048R01 - NRC Website

text

,_

-- _ __. _ - _ - -.~

' LICENSEE EVENT REPORT-N

. i:oNin:L stocs l -1 I -f l 1

i@

hPdAsE'en NT on Tyre ALL nE ue:ED INPuuATi:N) j f5TTl i Mi nl cllcl NI il@15 ol al l o f ol o f 0l 'o l l a l 'o l@284 l 1111 il: 11@l-Il&e

-- 1 ;

8 9 UCEN8EE CODE.

14 s ;Ehid NUMSER 26 UCENSE TYPE JO S3 CAT 58

- CON'T f TTTl

?"'Tef i t. l@l- 01 51'01 01 OI: 3I Ili 1@l 01910131~81 Ol@l Ol 9111718 l O l@

7 tu gJ

' 40 81

.DOCKETNUMSIR Gil 59 EVENT OATE 74 - 75 REPORT DATE 80 4

j.

EVENT DESCRIPTION AND pro 8ABLE CONSEQUENCES h

! LO_LJ l Durino normal' operation.'#12 -Control-Room Air Conditioner was stocoed ~ for 1

- 3 L [ FO TT1 l maintenance ar'd #11 was started. -Twelve minutes later it' was discovered 6-

~

l-3-

a 10 # 4 I i that the compressor for #11 unit was not running.

Two minutes later. it was i

f IO ls i.! discovered that the compressor had tripped on overloaa. The overload was 1

- 10 l6 l l reset at'that time and the unit'tnen started. Momentarily, both units had been I

i 'lOI:I I inocerable. which is a violation of T.S. 3.7.6.1.

I_ER 80-38 (U-1) describes I

j '-l O is l I a similar event.

I y

gg

- 80 0E COO Se OE' COMPONENT CODE 5 8C d6 5

i IM l Sl Gl@ [.E_l@ [_A,_j@ -l C l K I T l B l K l R l@ l Il@ [Z_J @

a

- 7 4

- 9 to 11 12 13 18 9

20 4

SEQUENTIAL OCCURRENCE REPORT R EVislON n (g gf po EVENT YE AR REPORTNO.

CODE TYPE NO.

?

G aiPg 'l1 $Q 1-1 10l4181 l011 l l Tl l-j 10 I u

2 22 23

'24 26 27 28 29 30 31 32

- K N AC O '

.O P NT ME O

HOUR $'

S8 i FOR B.

SUP Lt MA UF UAER l

]

l Al@LG_j@

l Z l@

l Z l@

l1101010l

[ N_J@

lYl@

lAl@

i C 171710 l@

33 34 -

35 36 3) 40 41 42 43 44 47

{

.CAUSE DESCRIPTloN AND CORRECTIVE ACT!oNS h :

.ii 011 A faulty reset-switch on the overload for #11 A/C compressor was found during i

j L2 l 1J l investigation. The resetJswitch was replaced.

Plant procedures are being i

i m 'l revised to reouire an ooerability check of the idle cnnten1 Rnnm Air i

.. I1 i3l I Conditinner when sprorinn the nneratino unit.

I gl l

7 89 80 l

ST

. % POWER OTNER ST'ATUS OS Y

DISCOVERY OESCRIPTION

. li I5 l LEJ@ l 1101 Ol@l NA

_j [A_J@l Operator Observation i

I

~ A TtvlTY C TENT:

RELEASED OPRELEASE -

. AMOUNT OF ACTIVITY LOCATION OF RELEASE i l i is I [1] @'[,1]@l ~

NA l

l NA l

PERSONNEL EXPOS ES' NUMSER-TYPE

DESCRIPTION

j L'_LJ l 010 D l@L_21@l NA l

I

,ERSON~E'aWunS auM8EM DESCRIPTION @

7ia 101010l@l

. NA -

1 7

8 9

11 12 L

80 T E DESCR PT ON Q ITITl [lj@l:

NA~

l 17 8 9

- 10 80 CE CRIPTION t[SS@l

.NA

- l lrliittitlll((

O 3-

.8,9-10 68 89

. 80 5 l

- NAVE ch ' REPARER R. L'.- Wenderlich/W.

B'.'. Pence-

,ggys @@WWE I00'9ss0592L.

j P

1j