ML17174A581

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DOP 6900-9,Revision 1, Station Battery Isolation & Return to Normal for Discharge Testing Unit 2 or U3 24/48 Vdc Battery
ML17174A581
Person / Time
Site: Dresden 
Issue date: 08/31/1979
From:
COMMONWEALTH EDISON CO.
To:
Shared Package
ML17174A578 List:
References
6900-9, NUDOCS 8012160525
Download: ML17174A581 (5)
v • d • e


Text

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STATION BATTERY ISOLATION ANO Hl~TURN TO NORMAL FOR DISC!l:\\RGE TESTING UNIT 2 OR.U3 21+/48 VDC BATTERY PURPOSE

  • DOP 6900*-9 Rcvisi.on 1 i\\11gus t 19 79
  • The p.1i i:po:,c.of this procedure is to prov i.cle the steps neccsr;nry to isola.te the Unit 2 or Unit 3 24/48 VDC. bilttcry for the battcry <llscharge test nnd then return the Unii 2 o~ Unit 3 24/48 voe battery to norm.11.

B.

REFER.t-=NCES I.

DOS 6900-2 (Station Battery Capilcity Test).

2..

DMP 8300-6 (Bat tei:y Db charge Tests - load box.connection)

3.

12E2324 C.

PREREQUISITES Notify the Shift Supervisor and the appropriate Unit Operator of the intention to isolate the U2 or U3 24/48 VDC battery.

D~

PRECAUTIONS Loss of 24/48 VDC would cause SRM and IRM inoperative trips.

Loss of 24/48 VDC woul~ cause a scram if the mode switch was in startup.

E..

LIMITATIONS AND ACTIONS

1.

None.

F.

.PROCEDURE NOTE There is no need to separate loads on the

, 24/48 VDC battery systems because there is no means of cross tying unit batteries.

To isolate the battery system all that is required is that the 100 amp breakers feeding each of the two ba~t~ry banks be opened. {Figure 3 is a schematic representation of the 24/48 VDC system~).

BATTERY ISOLATION

1.

OPEN system A and system B 100 amp breakers as noted on Figure 1 for U2 or Figure 2 for U3.

Operatc:>r ___________ Date_....* ----------

APPRQYED AUG23'79 1

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RACK TO NOF:MAL DOP 6900-9 Revision l

2.

CLOSE system A and system B 100 a1:1p brc;1kers as noted

_on Figure 1 for U2 or Fi!jure.2 for U3.

O;:iera tor ___ :_**-**--*--**'--*---------D;1te __ -*-** -*-*-- *-*----*--*--*--

G~

CHECKLISTS

1.

Figure l

2.

Figure 2

3.

Figure J H.

TECmHCAL SPECIFICATION REFERENCES -

1.
  • 3.9.A.5
2.

3.9.B.3

3.

4.9.B~l

4.

4.9.B.2 5.

4.9.B.3 2

  • APPROVED**

AUG2379 0.0.S.R.

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-0 0

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breaker.for U2 TURBINE BUil 125 voe DISTRIBUTION PANEL #2 A~O 2 /48 voe SWITCH CENfERS.

2A AND 28 l LOCATED IN U2 BATTERY ROOM) 24/48 voe Swl tch Ctr.

2B A

B c

E I

24/48.VDC !

Sw i tf ~ Ctr

  • i D
  • 1 1 125 vo'e 1

1 125 voe Neu,tron Turb. Bldg.

125 VDC

[Turb. Bldg.

1 125 voe

1. 125 voe.

1 2

Monitors H~ln Bus U2 Battery Main Bus 24/48 VOC ~~~b 2 Btfdg and Charger No. 2 to S1Jpply 11 ~

11 Res. *Bu.s

  • Feed to Turb. Bldg.

N 3

Turb.

Bldg.~...,

R *.,~*--2

o.

t---..:;...~--1 Hat n Bus 2

2 125VDe No. 2 Turb. B 1 dg.

125 voe Battery

  • Charger Control Hatn Dus No. 2 to Hain Bus Dlstrlbuticn.

Reactor Bld.9 Dtstr. Pnl.

No. 2 Panel Turb. B_ldg.

Main Bus No. 3 to Neutron Mon i tors

_24/4Bvoc T

  • 1 S_ upp 1 y"A" u rb.. B dg.

Res.BusNo.2 2 125 voe Turb. Bldg.

Res. Bus No. 2 to

.

  • IReactorB 1 dg t
  • Distr.Panel

. 1No. 2 i 3 I

125 voe *!2 j

24/48 voe 3

  • Dtstributio1 Panel Spare 2 125 voe 2/3 Charger to U2 Battery Turb.Bldg. !

1

.--.*----4Res. Distr.

24/48 VDC

~

2 Panel Dlstributio No. 2 Panel Spare

---, i-**-,,*

____, --- I

~-- ~ c.::r r_-_-5 1_-.:.

'I c,:-_:::, c_-_-,

I J::-.J l::.J C:j C:J r--J r_-_-J 1::.-1 i r*-; c-,

4 3 125 voe

,---; i--- I Spare

~oc~~rger I ---,-'.

Battery 24/48.*voe

  • "------'-------a...------.~--.-:°"

.. ------~-------~

.. ------------~--- breaker:. *for 24/48 11811

.* VDC S'/Stem 11A11 system Ftgure 1

00

(,)

0

< -0 VI O'

--\\..0 0

0

J 0 I-'

I.

.. \\.D

I.*.

I 100 amp- -

breaker for*

  • 24/48 voe-*

.system "A

24/48 voe Swl tch Ctr.

  • ~A
  • .\\

.:'{

  • 1

,.,/~

Neutron

t. Mon I tors 24/48 voe Sispply 11A11 r.::'J c::-J

___! i.r:::. c::1 3

TURBINE AND BUILDING 125 VDC DISTRIBUTION PANEL #3 24/48 VDC SWITCH CENTERS 3.A AND. 3B (LOCATED IN ~).BATTERY ROOM)

A 1 125 voe Turb.Bldg.

Main Bus No. 3 to Turb. Bldg.

Res.BusNo.~

2 l 25VDC Turb. B 1 dg.

Main Bus No. 3 to Reactor Bldg Dis.tr..

Panel No. 3

  • B c

1 125 voe 1 125 voe 1 125 voe U3 Battery Tu~b. Bldg.

  • and Charge1 Main Bus Feed to No. 3 to Turb. Bldg Turb. Bldg.

Ma In Bus IRoc:. R11dfo

~

No:. 3 2

2 125 voe 2/3 Chg_.

to U3 Battery 3

125 voe 3 Charger to U3 ISattery 125 voe Turb *.Sldg.

Main Bus Distr.Pnl.

.~:o. 3 Figure 2 2

Battery Charger Control Spare E

1 125 voe iurb. Bldg.

~1a in Bus No. 2 to 1

~urb. Bidg.

l:;ioc R11c:.Nn

'2 24/48.VDC

)

Sw i t ch C tr. \\

38 l

1 Neutron !

    • Monitors :

24/48 VD\\:*

Supply 11811 Q 125 voe j

rrurb. Bldg. I Res. Bus I

No. 3 to J

Reactor i

Bldg. Dlstr, i

?n 1. No. 3 I l

I j

3 125 voe

!2 Turb. Bldgj i

Res. Bus 24/48 VDe ;

N6. 3 Dist 1Distri~uti~~

Panel i

Panei J

I c-::1. L --*'

I ;_-_-j

~ F~~ c::, :

I -*-- r_:-:.

j I

I I

i I

iL

-=-~~~ ~;;]

l 00 amp I ---*

L - -*

i ~.

~~~-~~e~D~~r system 11811 I

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    • ~ ~j~.. **** *-**-*-~*,. ** ****--C--- *-£'

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FEED FROM Cf-f.'l.RGER AC INST A(+)

BUS DOP 6900-9 Revision 1 4812.(V

  • . N !.

BATFERY'--&rt.--~=------~'--~----~--------:~---<)---~~~-(}-----jf--~--~

(B SIMIU\\A)

'.CHARGER A(-)

. FEED FROM AC INST eus

)100A.

0 *.

~~.-*

~~--~

. * (-) 24V

.. ~~.

48/24-VdcSYSTEM t'"lQ'JCl0

  • APP~ I~,;;.

F.tgure 3

~w:~ 2::f79

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  • -~ -~----* _____ :-.__,..----~---,-:*-~: s*,ti ~~iT..

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