ML17174A582

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DOP 6900-10,Revision 2, Station Battery Isolation & Return to Normal for Discharge Testing U3 125 Vdc Battery
ML17174A582
Person / Time
Site: Dresden 
Issue date: 08/31/1979
From:
COMMONWEALTH EDISON CO.
To:
Shared Package
ML17174A578 List:
References
6900-10, NUDOCS 8012160528
Download: ML17174A582 (5)
v • d • e


Text

.

  • STATION BA'fTl*'.RY ISOLATION AND HE'l'Ul<N TO NORMAL FQ~ DTSCl!ARCE TES'l'lNG U3 125 \\'DC BATTERY DO.P 6900-10 Rcv*is:fon 2 A11*g1is t 19 79 A.

PURPOSE The purpose of this procc~1lure is to. provi cle the steps. nc~ccssary to isolate the U3 125 VDC battery for the b:Ull:ry disck1ree test and theg rctu~ri the U3 125 VDC h:itt~cy to n~nnal.

B.

REFERE?~CES

c.

. * *..-i_:

'-D.

. ; ~...

.1..*

DOS 6900-2 (Station Battery f.ap:icity Tc'st).

2.

mtP 8300--6 (Ila ttcry Discharge *Tests -

load box connection).

3.

12E2322

_4..

12E3055 PREREQUISITES.

Notify the Shift SupcrviSor and the U3 Operator of the intent-ion*

  • to isolate th~ U3 125 VDC battery
  • PRECAUTIONS The fol lowing loads are. fod from the Turbine Building 125 VDC Main Bus No. 3 and failure to properly "Isolate" and."Return

. to Normal" as per this procedure could result in a loss of power to one or more of the following loads: *

1.

125 VDC Reactor Building Distribution Panel No. 3

  • 2.

,.*4160V SW GR Bus 31.

. 3 *'

4160V SW GR Bus 32

.. 4.

.4160V SW GR Bus 33

5.

4160V SW GR Bus 34

.* 6.

'480V SW GR Bus js

7.

480V SW GR Bus _36

8.
  • 480V. SW GR Bus 37 *
9.

M.CB D.C. Bus 10.- >'f,.. '~345-KV 'Sw. Yd Distribution Panel No. 2

11.

Plant Sirens

-'-AUG2 :f79

. o.o.s.R.

su12J._5o_s_~L __.

1

\\.

12..

Co1;1putcr Room T.:~st lknch DOP 6900-10 Rcvisi.on 2 *

13.

Gen. & Trans. Relaying :md Hctcring Panel 903-29.*

14.

Gen. H,_ & S.tator Cooljng P:111cl 27,53--7

15.

Tire Protection System C01 C.1binet

16.

Trans. Fire Prot. Pnl. & Rx Fcedw.::itcr Pu111p- (Water Spray)

17.

Cr:'n. Field A.C.R. & Volt Rq;. Cabi.n,d 7./.53--6

18.

Escape Lighting Turbine Room

19.

Turbine EllC Cabinet 903-31 2d.

Panel 903~39

21.

'Aux. Elect. Equip. Room Panel 903-32

22.

Auto Blowdown Panel 903-32 and 903-57

23.

Trans. Fire Prat. Pnl. & lb.. Seal Oil Unit Cont.

Pnl. (Water Supply)

24.

Flow Reg. Station 480V MCC Main Circuit Breaker

25.

Rx Prot. System Panel 903-15

26.

Annunc. Input Relay Cabinet 903-34

27.

125 VDC Supply to Reserve Bus No. 2

28.

125 VDC Res. Bus No. 3 E.

LIMITATIONS AND ACTIONS

1.

None.

F.

PROCEDURE*

1..

Verify thatthe Ui 125 VDC battery is supplying its normal loads.

2.

Verify that t:he U2 125 VDC battery charger is charging*

the U2 125 VDC battery

  • APPROVED AUG2379 D.O.S.R.

2

DOP 6900-10.

Revision 2 (a) *\\.lose breaker C-1 (Tu1-hine R1dldi.ng Mcii.n Bus 113 to Turbine BidJ~fTng Rc:~~rve Tl1.1s 113) as noted on Figure 1.

Operator _______..

Date (b)

OPEN break,~r B-1 (U3 _125 VDC R.i t tery ;ind Ch:iq~er Feed to Main -niiS 113) as noted on. Figure 1.

Opera.t~r--**-----~----nate ____________....... ****-*------

(c)

  • OPEN breaker B-3 (UJ Charger to Battery) as noted on Figure 1.

Date ---

(d)

Verify that brerlkerB-:-2 (U 3A Charger to Battery) as noted ori Figure 1 is OPE~.

BACK TO NORMAL

4.

(a)

CLOSE breaker B-3 (U3 Charger to Battery) as noted on Figure 1.

Operator -----

(b)

CLOSE breaker B-1 (U3 125 VDC Battery and Charger Feed to Main Bus) as noted on Figure 1.

Operat~r ___________ Date~-------------

(c)

OPEN breaker C-1 (Turbine Building Main Bus fl3 to Turbine Building Reserve Bus 113) as noted on Figure 1.

Operat~r~------~-----Date ______________ ~

G.

CHECKLISTS

1.

Figur~ 1

2.

Figure 2 H.

TECHNICAL SPECIFICATION REFERENCES

  • l.

3.9.A.5

2.

3.9.B.3

3.

4.9.B.l.

4.

4.9.B.2 APPROVED:.

5.

4.9.B.3 AUG2379 3

o.o.s.R.

~*

I

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  • '0 I Cn
0

. I tURBINE BU.ILDING 1-DISTRIBUTIO~ PANEL i/3 AND 24/48 voe ~~

CENTERS 3A AND 3B 24/48 voe Swl tch Ctr

~A A

B 1 125 voe 1 125 voe Turb. Bldg. U3 Battery Neutron Main Bus and tharger Mo~ltors No. 3 to Feed to 2~/48 VOC Turb. Bldg. Turb. Bldg.

Supp 1 y"A" Res. Bus Ma In Bus f.J'n No. 3 2 125 voe Turb *. Bldg.

Main Bus No. 3 to Reactor Bldg. Dlstr Panel No.3 t-------1 2

24/48 voe 3

Oistrlbutloh Spare Panel 4

Spare 2 125 voe 3A Chg.

to U3 Battery 3 125 voe 3 Charger to U3

!Battery c

l 125 voe Turb.Bldg.

Main Bus No. 3 to Turb. Bldg.

Res. Bus No. 3.

2 125 voe Turb. Bldg.

Main Bus

  • D I s tr
  • P n*1 *
  • No. 3 FIGURE 1.

0 1 125 voe Battery Charger Contro.1 E

1 125 voe Turb. B*l dg.

Main Bus No 2 to Turb. 1 Bldg. Res.

Bus No. 3 2 125 voe Turb.* Bldg.

Re.s. Bus No. 3 to Reactor Bldg. Distr~

Panel No. 31 I

24/48 VDC i

Sw Itch.Ctr ~

38 i

1 Neutron I.

i~~~~o~~c I Supp.l y 11B"I J

1

  • I I 3 125 voe j I

Turb. Bldg. 12 1

Res* Bus

24/48 VDC
  • i-------4NO. 3 0 I str. Di stri but i oi1 2

Spare

!Pane 1

. Pane 1 i

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