ML20199E453

Off-Normal Operating Procedure 9408.2, Energizing 4 Kv Buses Using Cranking Diesels Bus Tie Lines or Startup Transformer from Opposite Unit

ML20199E453
Person / Time
Site:	Turkey Point
Issue date:	08/23/1985
From:	FLORIDA POWER & LIGHT CO.
To:
Shared Package
ML20199E404	List: L-85-372, Commits to Apply Appropriate Tech Spec Requirements to Address Auxiliary Feedwater Pump Availability & Performance Monitoring.Several Items Discussed in IE Operational Readiness Insp Team 850913 Exit Meeting Resolved ML20199E398 ML20199E411 ML20199E432 ML20199E453 ML20199E461 ML20199E480 ML20199E486 ML20199E503
References
FOIA-85-729 9408.2, NUDOCS 8603270226
Download: ML20199E453 (11)

Text

1 4

i. t ia l

FLORIDA POWER AND LIGHT COMPANY TURKEY POINT UNITS 3 AND 4 I

~ 0FF-NORMAL OPERATING PROCEDURE 9408.2 AUGUST 23, 1985 j.

1.0

Title:

3 ENERGIZING 4KV BUSES USING THE CRANKING OIESELS 8US TIE LINES OR STARTUP j

TRANSFORMER FROM.THE OPPOSITE UNIT 2.0 Approval and List of Effective Pages:

2.1 Approval

~

}

Change Dated 8/23/85 Reviewed by Plant Nuclear Safety Committee:

85-140 1

and Approved by Plant Manager - Nuclear: 8/23/85 1

2.2 List of Effective Pages:

h Date Page Date Page Date h

Date 1

8/23/85 4

8/23/85 7

8/23/85 10 8/23/85 2

8/23/85 5

8/23/85 8

8/23/85 11 8/23/85 3

8/23/85 6

8/23/85 9

8/23/85 3.0 Purpose and Discussion:

3.1 Purpose

This procedure provides instructions to be followed when -a loss of nomal power supplies requires an alternate method of feeding the 4KV bus (es) for l

the purpose of supplying emergency loads.

The breakers required to perform the energizing 'of the 4KV buses discuss herein are locked breakers and j

requires authorization of PS-N to be racked in.

3.2 Discussic :

-l l

3.2.1 This procedure can be utilized to energize.and load the A, B and C l

4KV buses and their respective load centers and emergency loads.

l l

3.2.2 This procedure can be utilized to l

Unit Startup Transformer (for A Bus) provide power from the Opposite or the Cranking Diesels (for C, and "A" or "B").

1 3.2.3 This procedure can.be utilized to energize a dead 4KV bus either j

because there isn't the ab_ility to sync. check prior to closing the

{

breaker or because bus clearing must be in to close the breaker.

3.2.4 The Cranking Diesel tie line and breakers are rated at no more than SMVA.-,Qo not allow Cranking Diesel Ammeter indication exceed a total of 630 amps.

8603270226 860106 PDR FOIA WEISS85-729 PDR DM.

i m

u.

m.--

e.

m.

m

l

~

?

s 8/23/85 3

0FF-NORMAL OPERATING PROCEDURE 9408.2, PAGE 2 ENERGIZING 4KV BUSES USING THE CRANKING DIESELS BUS TIE LINES OR STARTUP TRANSFORMER FROM THE OPPOSITE UNIT 3l 3.2.5 Interlocks that affect the closure of the Cranking diesel Incoming

)

Breaker at the l*C 4KVl Bus 3AC03 (4AC03):

4W26466 must be closed.

.i AND

>f 3AC01 (4AC01) must be open.

AND 3AC16 (4AC16) must be open.

j AND il l'

3C(4C) Bus Differential Relay must not be tripped.

l AND I

Control Switch to CLOSE.

t

i 3.2.6 Interlocks that affect the closure of Cranking Diesel tie breaker at the Cranking Diesel Bus 4W26466.

Must not have a Cranking Diesel Bus Lockout.

AND Cranking Diesel Incoming Breaker at the 3C Bus - 3AC03 must be lRackedInlandOpen.

AND i

i Cranking Diesel Incoming Breaker at the 4C Bus - 4AC03 must be lRackedInlandOpen.

AND

.j Control Switch to CLOSE.

l 3.2.7 Interlocks that affect the closure of Load Center 3E(4E) Feeder Breaker 3AC04(4AC11).

>j 1.

None 3.2.8 Interlocks that affect the closure of load Centers 3F and 3G (4F and

]l 4G) Feeder Breaker 3AC04(4AC04).

I 1.

None I!

4.0 Symptoms

4.1 All supply breakers to the affected 4KV Bus are OPEN 4.2 No voltage indication on the affected 4KV bus.

p i

j 8/23/85 7

0FF-NORMAL OPERATING PROCEDURE 9408.2, PAGE 3 J

ENERGIZING 4KV. BUSES USING THE CRANKING DIESELS t.

BUS TIE LINES GR STARTUP TRANSFORMER FROM THE OPPOSITE UNIT

5.0 Instructions

5.1 Irmoediate Automatic Actions:

5.1.1 None 5.2 Immediate Operator Actions:

5.2.1 Stabilize the unit using appropriate Off-Nonnal Operating Procedures.

5.2.2 l_I_, an SI signal exists or 1,f, an. SI signal is actuated during this procedure, it ghould be reset to pennit manual loading ' of equipment i

on the 4KV bus.i 5.2.3 Place following equipment switches in PULL-TO-LOCK or 0FF position:

1.. High-head SI_ pumps 2.

RHR pumps jj 3.

Containment Spray Pumps c

1{

4.

CCW pumps J'

5.

Emergency Containment Filter and Cooler Fans 4

6.

Intale Cooling Water Pumps 5.3 Subseauent Operstor Actions:

II 5.3.1 lPerfonn the following to energize th'e *C 4KV bus utilizing the d-cranking diesel:

1.

On the *C 4KV Bus, UNLOCK and RACK IN 3AC03 and 4AC03.

l].

NOTE:

Low voltage does not trip the load center feeder breakers and therefore.have a high, probability of being CLOSED and i'

will need to-be OPENED.

2.

On the *C 4KV Bus to be energized, verify by visual local check that all breakers are OPEN.

CAUTION:

The Cranking Diesel Generator should not be operated S

unloaded greater than 15 minutes.

Operation at s

a periods longer than 15 minutes could result in

]

turbochargerfire.l 3.

Notify Unit 1 and 2 Control Room to perform the following:

(1)

Install control power fuses (4), remove tag, UNLOCK and RACK u

IN 4W26466.

[

(2) close their associated output breakers l,gn, dead bus,1Qr$,l a Start at least two cranking diesels n

=

i

<v-me w.

e

,qy

,,44

r

-8/23/85 1

0FF-NORMAL OPERATING PROCEDURE 9408.2, PAGE 4 ENERGIZING 4KV BUSES USING THE CRANKING DIESELS

.}

BUS TIE LINES OR STARTUP TRANSFORMER FROM THE OPPOSITE UNIT a

(3) Close 4W26466 and notify the Plant Supervisor-Nuclear. that 4W26466 is closed.

4.

On the *C 4KV bus to be energized (from the Control Room), CLOSE

• AC03.

5.

Verify *C Bus voltage to be approximately 4KV.

6.

If necessary to energize the remaining *C.4KV bus, perform-the 3

following for the bus to be energized:

j NOTE:

Low voltage does not trip the load center feeder breakers and therefore have a high probability of being CLOSED and will need to be OPENED.

i (1) Verify by visual local inspection that all breakers are OPEN.

(2) Close *ACO3 (from the Control Room) 1 (3) Verify *C 4KV bus voltage is approximately 4KY.

t l

CAUTION:

If Auxiliary Feedwster is not available, the Standby Steam Generator Feedwater System shall be utilized to supply feedwater in accordance with Operation Procedure 7201.1, Standby Steam Generator Feedwater System - Operating Instructions.

l 7.

If the Auxiliary Feedwater System is unavailable and Standby Steam Generator Feedwater System Operation is required, CLOSE the i

Standby Steam Generator Feedwater Pump breaker for the.*C 4KV bus being loaded:

(1) 3AC06 - SSGFP A f

(2) 4AC10 - SSGFP B l CAUTION:

The Cranking Diesel tie line and breakers are rated at no more than 5 MVA.

Do not exceed 630 Amps Total j

on the Cranking Diesel ammeters.

I 8.

To load either *C 4KV bus perfom step 5.3.2.

E.

l To energize *A or *8 4KV Bus from *C 4KV Bus, perform step 5.3.3.

Do not perTorm both steps 5.3.2 and 5.3.3.

1 l

j i

f 8/23/85 OFF-NORMAL OPERATING PROCEDURE 9408.2, PAGE 5 ENERGIZING 4KV BUSES USING THE CRANKING DIESELS-BUS TIE LINES OR STARTUP TRANSFORMER FROM THE OPPOSITE UNIT 5.3.2 To load either *C 4KV Bus:

1.

If necessary to energize *E load center, perform-the following:

[

(1) CLOSE 3AC04 for 3C bus E 4AC11 for 4q, bus - supply to *E load center.

p (2) START n,!gglgl, equipment fed from the *E load center, using h

care to assure _T_oji_al amperage on Cranking Diesel ammeters does not exceed 630 amps.

1 2.

If necessary to energize *F and *G load centers, perform the following:

j (1) CLOSE 3AC11 for 3C bus E 4AC04 for 4C bus - supply to *F and j

• G load centers.

(2) START needed equpment fed from the *F load center, using care to assure "otal ' amperage on Cranking Diesel anneters does not exceed 630 amps.

t j

(3) START needed equipment fed from the *G l' ad center, using o

care to assure Total am ammeters does not exceed 6TfTmps.perage on - Cranking Diesel i

l 3.

Repeat steps 5.3.2.1 and 5.3.2.2 to load the other *C 4KV bus if t

desired.

CAUTION:

Verify F Load Center (s) tie breaker 41408-is opened after closing 3AC04 or 4AC11.

i 1

5.3.3 To energize A E B 4KV Bus from C 4KV bus:

1l CAUTION:

The *C 4KV bus should be unloaded, 'unless a Standby Steam l

Generator Feedpump(s) is required due to a ' loss of Auxiliary Feedwater, to ensure amperage requirements are i

i not exceeded on the Cranking Olesel tie line and breakers i

when the *A or *B 4KV bus is energized.

j 1.

Ensure that the *A or *8 4KV bus to be energized has a CCW pump

,g!d, an. Intake Cooling Water Pump available.

2.

Verify by visual local check that all breakers on the A g 8 4KV bus to be energized, are OPEN.

CAUTION:

00 NOT energize both A and 8 4KV Buses on a unit with the C 4KV Bus tie.

3.

On the associated unit, unlock *AC13.

4.

Rack in associated *AC13.

5.

Close the associated *AC13.

8/23/85 9

0FF-NORMAL OPERATING PROCEDURE 9408.2, PAGE 6 ENERGIZING 4KV SUSES USING THE CRANKING DIESELS BUS TIE LINES OR STARTUP TRANSFORMER FROM THE OPPOSITE UNIT 6.

To energize the associated A 4KV Bus, perform the following:

. UNLOCK *AA09.

RACK IN *AA09.

CLOSE *AA09.

4) VERIFY A 4KV Bus Voltage to be,approximately 4160 volts.

7.

To energize the associated B 4KV Bus, perform the filowing:

1) UNLOCK *AB22.

2) RACK IN *AB22.

l

3) CLOSE *AB22.

4) VERIFY B 4KV Bus Voltage to be approximately 4160 volts.

8.

To load A 4KV Bus, perform the following:

1 (1)

If plant conditions require, energize a CCW pump and Intake Cooling Water Pump on the A 4KV bus energized:

i j

3A 4KV Bus t

3AA12 - 3A CCW Punp j

3AA17 - 3C CCW Pump 3AA19 - 3A Intake Cooling Water Pump 4A 4KV Bus 4AA12 - 4A CCW Pump 4AA17 - 4C CCW Pump 4AA19 - 4A Intake Cooling Water Pump (2) CLOSE needed 480 Volt Load Center breakers as follows:

• A Bus 4KV Bus

• AA08 Feed to A 480 Volt Load Center

• AA14 Feed to C 480 Volt Load Center (3) START needed Emergency Equipment from *A or *C 480V load centers, using care to assure Total amperage does not exceed 630 amps.

(4)

If plant conditions require, energize a charging pump on the load center energized:

3A Charging Pump - 30105 3A - 480 V Load Center 3C Charging Pump - 30308 3C - 480 V Load Center or 4A Charging Pump "T0105 4A - 480 V Load Center 4C Charging Pump - 40308 4C - 480 V Load Center i

9.

To load *B 4KV bus, perfonn the following:

I.

. I *

.. I.

[

1.*.

T I

r

.a

.8/23/85 OFF-NORMAL OPERATING PROCEDURE 9408.2, PAGE 7 ENERGIZING 4KV BUSES USING THE CRANKING DIESELS BUS TIE LINES OR STARTUP TRANSFORMER FROM THE OPPOSITE UNIT 1'

.(1) 1f_ ling Water Pump on the B 4KV bus er.ergized: plant conditions Coo t

3B 4KV Bus 3AB17 - 3B Intake Cooling Water Pump 3AB19 - 3C Intake Cooling Water Pump 7

48 4KV Bus J

4AB13 - 48 CCW Pump 4AB17 - 4B Intake Cooling Water Pump

~

4AB19 - 4C Intake Cooling Water Pump i

9 (2) CLOSE needed 480V load center breakers as follows:

1 J

• B 4KV Bus Feed to B 480 Volt Load Center

• AB09

• AB14 Feed to D 480 Volt Load Center t

(3) START needed EMERGENCY EQUIPMENT from

• B 0R

• 0 load centers. Usina care to assure TOTAL amperage does not exceed 630 amps.

(4)

If plant conditions require, energize' a charging pump on the j

load center energized:

l 3B Charging Pump - 30203 38 - 480 V Load Center or l

48 Charging Pump - 40308 48 - 480 V Load Center

10. If total amperage limits allow, START needed Emergency Equipment Tr~om *A or *B 4KV bus.

3 f

5.4 Using the OPPOSITE Startup Transformer to energize the ASSOCIATED Unit A 4KV t

Bus (B 4KV Bus cannot be enregized from A 4KV Bus):

)

5.4.1 Verify by visual inspection all breakers on the A 4KV Bus to be energized are OPEN or RACKED OUT.

5.4.2 On the A 4KV Bus to be energized, unlock *AA22.

5.4.3 Rack in *AA22.

5.4.4 Verify potential on opposite units startup transformer (white lights above frequency recorder).

j u

i 5.4.5 Close in *AA22.

5.4.6 Verify A 4KV Bus Voltage to be approximately 4160 Volts.

(

---

===-=--==- -===1=-

-=== = =:

=

t 8/23/85 i

0FF-NORMAL OPERATING PROCEDURE 9408.2, PAGE 8 sj ENERGIZING 4KV BUSES USING THE CRANXING DIESELS BUS TIE LINES OR STARTUP TRANSFORMER FROM THE OPPOSITE UNIT j

i 5.4.7 To load the A 4KV bus perform the following:

I 1.

CLOSE the needed Load Center feeder breakers.

y I

(1)

Feed to A Load Center *AA08.

(2) To feed l> Load Center, use the breaker as follows:

I 1.

OPEN *0210, then 2.

CLOSE *0110.

i 3.

Re-energize required loads.

j (3)

Feed to C Lead Center *AA14.

(4) To feed D Load Center, use the tie breaker as follows:

1.

OPEN 20410, then 2.

CLOSE 1310.

3.

Re-energize required loads.

(5) Close in needed Load Center breakers requi red to START EliERGENCY LOADS.

(6) START required 480V EMERGENCY loads.

(7) Start 4KV EMERGENCY Pumps as ' required by plant conditions.

CAUTION:

00 NOT exceed 600 Amps total load on the A 4KV Bus.

NOTE:

To return the' system to nonnal, the bus (es) energized i

by this procedure MJST be DEAD prior to being restored by its nonnal power supply.

l 5.5 To de-energi7e A 4KV bus (powered from opposite unit startup transformer or j

bustie):

5.5.1 Energize the B 4KV Bus.by a nonnel feed breaker (*AB05 or Unit 3 1

3AB20/ Unit 4 4AB21) by using *-0P-005, 4160 Volt Buses A and B.

5.5.2 Transfer loads by starting needed pumps on B 4KV bus and stopping all pumps on A 4KV Bus.

1 l

5.5.3 Transfa- '.oad Centers by:

1.

f tieu to "C" Load Center, transfer D LC by:

Verify *0410 OPEN.

CLOSE *AB14.

OPEN *0310.

CLOSE *0410.

Re-energize required loads.

2.

If "C" Load Center is needed:

OPEN *0302.

CLOSE *0310.

j Re-energize required loads.

4

(

s, n r.

....s..w.-

..n.

_____y______

.m

r

.I t

8/23/85 0FF-NORMAL OPERATING PROCEDURE 9408.2, PAGE 9 ENERGIZING'4KV BUSES USING THE CRANKING DIESELS BUS TIE LINES OR STARTUP TRANSFORMER FROM THE OPPOSITE UNIT l

3.

If tied to A Load Center, transfer B Load Center by:

1) Verify *0210 OPEN.

f; CLOSE *AB09.

p E*

5.

Re-energize required loads.

4.

If "A" Load Center is needed:

(1) OPEN *0102.

(2) CLOSE *0110.

(3) Re-energize required loads.

5.

After Load Centers are transferred:

(1) OPEN *AA08.

(2) OPEN *AA14.

5.5.4 Verify by visual inspection all breakers are OPEN or RACKED OUT except for *AA22 or *AA09, then:

t j

1.

OPEN *AA22 or *AA09.

h 2.

RACK OUT *AA22 or *AA09, i

i 3.

LOCK breaker mechanism to prevent RACK IN of breaker on *AA22 or I

• AA09.

I 4.

A 4KV Bus may be energized using *-0P-005, 4160 Volt Buses A and i

B.

s 5.6 To de-energize B 4KV Bus (powered from bus tie):

J 5.6.1 Energize the A 4KV Bus by a nonnal feed breaker (*AA05 or *AA20) by using *-0P-005, 4160 Volt Buses A and B.

A 5.6.2 Transfer loads by starting needed pumps on the A 4KV Bus and stopping 0

all pumps on B 4KV Bus.

5.6.3 Transfer Load Centers to the A 4KV Bus as required.

1.

If tied to "D" LC, transfer "C" LC by:

(1) Verify *0302 is OPEN.

(2) OPEN *0310.

~

CLOSE *AA14.

CLOSE *0302.

Re-energize required loads.

2.

If "D" LC is needed:

OPEN *0410.

CLOSE *0310.

Re-energize required loads.

_... _ _. _.. ~. _...........

t 1

t 8/23/85

.b 0FF-NORMAL OPERATING PROCEDURE 9408.2, PAGE 10 1

ENERGIZING 4KV BUSES USING THE CRANKING DIESELS

]

BUS TIE LINES OR STARTUP TRANSFORMER FROM THE OPPOSITE UNIT

.j 3.

If tied to "B" LC, transfer "A" LC by:

1 (1) Verify OPEN *0102.

(2) OPEN *0110.

e

'(3) CLOSE *AA08.

(4) CLOSE *0102.

).

(5) Re-energize required loads.

4.

If "B" LC is needed:

il 3

(1) OPEN *0210.

j (2) CLOSE *0110.

d (3) Re-energize required loads.

9 i(

5.6.4 Verify by visual inspection all breakers are OPEN or RACKED OUT

.j except for *AB22.

3 1.

OPEN *AB22.

'i 2.

RACK OUT *AB22.

1 3.

LOCK breaker mechanism to prevent RACK IN of breaker *AB22.

l 4.

B 4KV Bus may be energized using *-0P-005, 4160 Volt Buses Atand

,j B.

j 5.7 To de-energize C 4KV Bus (powered by Cranking Diesels):

5.7.1 If used to power A or B 4KV Bus, perform applicable step 5.5 or 5.6

{

before connencing thTs step.

5.7.2 If *AC13 is not opened, racked out and locked, perform the following:

1.

OPEN *AC13.

2.

RACK OUT *AC13.

3.

LOCK breaker *AC13 to prevent RACK IN.

i 5.7.3 Check *AC04 to be open; if not, OPEN *AC04.

5.7.4 Check *AC11 to be open; if not, OPEN *AC11.

g 5.7.5 OPEN *ACO3.

1 5.7.6 lAfter,both4AC03and3AC03havebeenopened:

N' 1.

RACKOUT3AC03and4AC03l.

)

31 2.

LOCK breaker 3AC03 and 14AC03l to prevent RACK IN.

3 jj 3.

"C" 4KV Bus may be energized using *-0P-005.1, 4160 Volt Bus "C"

i[

6.0

References:

6.1 Emergency Operating Procedure 20007 - Loss of all AC Power.

y 6.2 Operating Procedures:

s

'l '

6.2.1

• -OP-005, 4160 Volt Buses A and B.

?

8/23/85 0FF-NORMAL OPERATING PROCEDURE 9408.2. PAGE 11 d

ENERGIZING 4KV BUSES USING THE CRANKING DIESELS BUS TIE LINES OR STARTUP TRANSFORMER FROM THE OPPOSITE UNIT 6.2.2

• -0P-005.1, 4160 Volt Bus C.

6.2.3 OP-7201.1. Standby. Steam ' Generator Feedwater System Operating

,nstructions!

1 7.9 Records Required:

7.1 Entry into plant logs of evolutions performed in this procedure.

D i

'.?

t

'l

,-j me

.k i

.I

.c

.--..,7~.

_-....~_.....~s._..,