ML20141N179

Rev 0 to Procedure GOP-OLC-001.00, Operator License Candidate:Abnormal Operating Procedures,Loss of Ac Bus Power Sources AB 1203.28

ML20141N179
Person / Time
Site:	Davis Besse
Issue date:	12/31/1985
From:	Gavioli M TOLEDO EDISON CO.
To:
Shared Package
ML20141N145	List: ML20141N144 ML20141N147 ML20141N150 ML20141N153 ML20141N156 ML20141N160 ML20141N163 ML20141N168 ML20141N172 ML20141N176 ML20141N179 ML20141N180
References
GOP-OLC-001.00, GOP-OLC-1.00, TAC-61015, NUDOCS 8603040450
Download: ML20141N179 (13)

Text

Seri21 No. 1242 Att:chment 8 LES,gN PLAN REVISION / REVIEW HISTORY [Oss op[C b3 gg my gg.s /245.2d LESSON PL AN TITLE LESSON PLAN NUMBE R

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GOP-OLC-001.00 Attachment 28 Program

Title:

OPERATOR LICENSED CANDIDATE Course

Title:

PROCEDURES NORMAL, ABNORMAL, and EMERGENCY Lesson

Title:

ABNORMAL OPERATING PROCEDURES Approximate Time: Revision No.: 00 Date: 8510 Resource Materials for the Instructor:

Job Aids: Applicable Abnormal Procedure Audio / Visual Equipment Needed: Overhead Projector List of Transparencies:

Equipment / Tools: N/A Safety Requirements: N/A Instructional Setting: Classroom Student Materials: Pen or Pencil, Paper, Handout Special Considerations: N/A Instructor

References:

AD 1828.10, AD 1805.00, AB 1203, Reg Guide 1, 33 10 CFR 50, Technical Specifications Student

References:

AB 1203 Applicable 1 of 7 1

LOSS OF AC BUS POWER SOURCES AB 1203.28 GOP-OLC-001.00 Attachment 28 OBJECTIVE. OBJECTIVE TEXT NUMBER 0 UPON SUCCESSFUL COMPLETION OF START' -

UP TRAINING, TE

. REACTOR OPERATORS AND SENIOR REACTOR OPERATORS WILL BE ABLE TO PROPERLY APPLY THE ABNORMAL PROCEDURES NECESSARY FOR PROPER TASK PERFORMANCE.

00 TE FOLLOWING ENABLING OBJECTIVES ASSOCIATED WITH THIS LESSON PLAN ARE DESIGNED TO SUPPORE TE " KNOWLEDGE" REQUIREMENTS FOR TE ABOVE TERMINAL OBJECTIVE.

000 TE TRAINEE, WITHOUT REFERENCES (UNLESS OTHERWISE SPECIFIED), ACCORIDNG TO APPROVED PROCEDURES, WILL BE ABLE TO:

01 GIVEN SPECIFIC SYMPTOMS, CORRECTLY RECOGNIZE LE APPLICABLE ABNORMAL PROCEDURE.

02 LIST / STATE TE FINAL PLANT CONDITION THAT THE ABNORMAL PROCEDURE DIRECTS TE PLANT TO BE PLACED IN.

03 RECALL / IDENTIFY TE PLANT EQUIPMENT / SYSTEMS AVAILBLE TO TE OPERATOR DURING TE PERFORMANCE OF TE ABNORMAL PROCEDURE.

04 LIST / STATE TE FINAL CONDITION OF SELECTED PLANT SYSTEM, WHEN TE ABNORMAL PROCEDURE IS COMPLETE.

05 WHEN PROVIDED WITH A SPECIFIC NOTE AND/0R CAUTION, CORRECTLY LIST / STATE THE REASON FOR TE NOTE AND/OR CAUTION.

06 LIST / STATE TE EMERGENCY ACTION LEVEL TE STATION / SITE IS IN WHEN THE ABNORMAL PROCEDURE IS: ENTERED, IN PROGRESS, COMPLETED (SR0 ONLY).

1 07 BRIEFLY DESCRIBE TE ACTION (S) THAT EACH INDIVIDUAL IS DIRECTED TO PERFORM, IN ACCORDANCE WITH TE ABNORMAL PROCEDURE (SR0 ONLY - ALL INDIVIDUALS ACTIONS).

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LOSS OF AC BUS POWER SOURCES AB 1203.28 GOP-OLC-001.00 Attachment 28 i

1.0 INTRODNCTION The intent of thic lesson is to introduce / review the Loss of TP-1 AC Bus Power Sources Abnormal Procedure. The material (s) that you are responsible for is/are stated in the objectives for this lesson.

2.0 PRESENTATION A. Symptoms that indicate entrance into this abnormal OBJ. #1 procedure.

1. Zero volts on the following buses.

a. A

b. B

c. C1

d. C2

e. D1

f. D2

2. Loss of Normal Station Lighting B. The following Automatic Actions will occur OBJ #3 & 7

1. Reactor / Turbine Trip

2. Emergency Diesel Generators START and Energize C1/El and D1/F1 Buses

3. SFRCS Actuation C. Operator Actions

1. Determine the proper procedure section to enter and Details of actions perform the actions. are given in the AB

a. Complete loss of AC power section 6.0

b. Loss of AC to 13.8KV buses (D.G(s) available)

Section 3.

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LOSS OF AC BUS POWER SOURCES AB 1203.28 GOP-OLC-001.00 Attachment 28 l o

2. Action for a complete loss of AC Section 6.0

a. Dispatch operators te locally attempt to start the Diesel Generators and energize C1 or D1 Bus.

(1) If either C1 or D1 can be energized, proceed to EP 1202.01 RPS, SFAS, SFRCS Trip Step 4.1.2.  ;

(2) If not contact Load Dispatcher "take necessary steps to restore offsite power.:

b. Dispatch operators to line up and commence feeding the Steam Generators with the Auxiliary Feedwater System.

c. Strip A, B, C2 and D2 buses TP-2, TP-3

d. If offsite power is available attempt to energize A, B, C1 and D1 buses. If so, go to EP 1202.01 Step 4.1.2.

e. Preserve RCS inventory -

(1) Isolate Letdown MU-3 (2) Isolate Seal return MU-38 (3) Isolate Pressurizer sample line RC-240B

f. Place Diesel Air Compressor in Service

g. Trip previously running MU pump isolate seal supply,

b. IF offsite power is not restored within 20 Attachment 1 minutes reduce load on the station batteries. of A.B.

i. Wait for offsite Power to be Restored.

3. Actions for loss of AC to 13.8KV buses Diesel Generator (s) available.

a. Take Control of Atmospheric Vent Valves (SFRCS blocked) 4 of 7

LOSS OF AC BUS POWER SOURCES AB 1203.28 GOP-OLC-001.00 Attachment 28

b. Trip the following breakers:

(1) Source Bkrs. to A and B Buses TP-2 (2) Load Bkrs. on A and B Buses (3) Source Bkrs to C2 and D2 Buses TP-3 (4) Load Bkrs on C2 an D2 Buses except lighting bkrs.

I READ CAUTION: Care should be taken not to overload the D.C.'s Read aloud when supplying C2 and D2 buses. If an SFAS trip and emphasize occurs, C2 and D2 may have to be deenergized to OBJ #5 prevent overloading the D.G.s.

c. If DG-1 is on C1 close AC110 to TP-4 energize C2 Addendum 3

d. If DG-2 is on D1 close AD1'10 to TP-4 energize D2

e. Turn the essential pressurizer heater control switch to "0N" then "AUT0"

f. Try to Restore Offsite Power

, g. If Not restored and Both D.G.s are available and No cooldown required go to PP 1102.10 (Plant Shutdown) i

h. If Not restored and Both D.G.s are available and cooldown required, go to AB 1203.04 (Depressurization with only Safety Grade Equi ment) i

i. If Not restored and only one D.G. available s Addendum 1 (1) Recover essential bus F1 or El TP-5 i By supplying from:

1. 1 D.G. available C1 to C2 to D1 ,

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C1 to D2 to D1 l l

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LOSS OF AC BUS POWER SOURCES AB 1203.28 GOP-OLC-001.00 Attachment 28

1. 2 D.G. available D1 to D2 to C1 TP-6 or D1 to C2 to C1

j. If restored, reenergize the buses from th'eir normal or alternate sources.

(1) C2 and D2 buses to normal AC source Emphasize

" dead bus" transfer isolate from diesci Addendum 2 by opening bus tie breakers.

(a) Energize C2 and D2 kuses from AC or BD transformers.

(b) Place Isocronous droop switch in DOUBLE EMPHASIZE

" droop" (c) Place voltage regulator droop switch in "On" (d) Parallel the D.G. with the normal power source close incoming bus

' breaker unload the D.G. trip D.G.

b reak.t r .

k. Restart one RCP per loop

1. Restart a TPCW pump

m. Start a Station Air Compressor

a. Refer to either PP 1102.10 or AB 1203.03 depending on plant conditions.

D. Initial and Final Plant Conditions

1. The plant is assumed to be in mode 1 or 2 at the start of the event.

2. The plant is taken to Mode 3 (hot standby) Obj . #2 when the procedure is followed.

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LOSS OF AC BUS POWER SOURCES AB 1203.28 GOP-OLC-001.00 Attachment 28

3. RCS Heat Removal is via the Steam Generators, Obj. #4

, Auxiliary Feedwater is supplying the S.G.'s, the AVVs or steam safeties are maintaining pressure (Tsat; RCS Temp) Natural circulation is in progress.

4. The Emergency Action Level the plant is in at the: Obj. #6

a. Start is: Unusual Event

b. During: Dependent on plant conditions AC lost > 15 minutes - Site Emergency i

c. Completed: Dependent on plant conditions j refer to (b.) above.

READ CAUTION: If D.G.s are supplying C1 and C2 buses, DO NOT Read Aloud j reset SFAS until off-site power is available.

3.0

SUMMARY

A. Review symptoms B. Review initial plant conditions i

C. Review final plant conditions D. Review Emergency Action levels E. Review cautions 4.0 EVALUATION l A. Ask students to answer the objectives 5.0 ASSIGNMENT l

GOP-OLC-ATTACH. 28 2

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1 LOSS OF AC BUS POWER SOURCES AB 'a203.28 GOP-OLC-001.00 Attachment 28 Addendue 1 ADDENDUM 1 TO ATTAC}DfENT 28 Reasons (s) for recovering of the opposite side essential bus with only one Diesel Generator operating.

1. Restore Power to the Battery Chargers and the Instrument Buses - Prevent Degradation of Plant Control and recovery.

a. Loss of E-1 Buss will result in loss of the following: (assuming no operator action).

1. Inverter YVA - Bus YAU

2. Dip 125VDC

3. Rectifier YRFI - Alt. Pwr. tu Inv YVI

4. Inverter YFI

5. Channel #1 120VAC Y1

6. Inverter YA - Emerg. Pwr to Channel #1 (Y1)

7. Din 125VDC

8. Rectifier YRF3 - Alt Pwr to Inv. YV3

9. Inverter YF3

10. Channel #3 120VAC Y3 Example of Loads Lost SFAS Solenoid Valves Channel Emg. D.G. 1-1 and ACT RPS I and 3 SFAS 1 and 3 SFRCS i i

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LOSS OF AC BUS POWER SOURCES AB 1203.28 GOP-OLC-001.00

. Attachment 28

. Addendum I

b. Loss of F-1 Buss will result in loss of the following:

(Assuming no operator action)

1. Inverter YVB -- Bus YBU

2. D2P 125VDC

3. Rectdfier Y1F Alt Pwr to Inv. YV4

4. Inverter TV4

5. Channel #4 120 VAC T4

6. Inverter YB - Emerg Pwr to Channel #4 (Y4)

7. D2N 125VDC

8. Rectifier YRF Alt Pwr to Inv YV2

9. Inverter YF3

10. Channel #2 120 VAC Y2 Examples of loads lost:

SFAS Solenoid Valves Channel 2 Emg DG 1-2 and Alt RPS 2 and 4 SFAS 2 and 4 SFRCS

2. Restore Power to a needed safety function

a. Loss of C1 or Di Bus will result in Loss of the following:

1. Service Water Pump

2. HP Inj. Pump

3. DH Pump i

4. CC Pump i

l CAf' TION: Closelv monitor the Diesel Generator Load

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i LOSS OF AC BUS POWER SOURCES AB 1203.28 GOP-OLC-001.00 Attachment 28 Addendum 2 Procedure For Removing Diesel Generator 1-1 (1-2) from Service by Powering 1 (D1) from Buss Tie Transformers or C2 (D2).

No. 1-1 (1-2) Diesel Generator is running and tied to Bus C1 (D1).

Bus C1 (D1) is isolated from the system. Breakers AC110 (AD110) and ABDCI (AACD1) are TRIPPED.

The Emergency Control Transfer Switches located on Bus C1 (D1) cubicles for Breakers AC110 (AD110) and ABDCI (AACD1) are in the NORMAL position.

The Shift Supervisor has given his permission to parallel with the system.

Bus C2 (D2) is energized by the system with Breaker AC110 (AD110) TRIPPED or XFMR BD (AC) is energized by

the system with Breaker ABDCI (AACD1) TRIPPED.

Place ISOCHRONOUTS-DROOP SWITCH on Panel C3617 (C3618) in DG Room 1 (2) in the " DROOP" position unless in this position.

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' Place VOLTAGE REGULATOR DROOP SWITCH on Panel C3617 (C3618) in DG Room 1 (2) in the "0N" position unless in this position.

Place DG1 (2) SYNC SELECTOR switch in the BKR TO C2 i

(D2) or TIE BKR TO XBD (XAC) position on Local Control Panel C3615 (C3616).

Adjust the Diesel Generator speed using DG1 (2) SPD control switch on Local Control Panel C3615 (C3616) so that the DG1 (2) SYNCHRON0 SCOPE pointer is revolving slowly in the FAST (clockwise) direction. Adjust the DG voltage using Voltage Reg. Control switch until the INCOMING voltage > the RUNNING voltage.

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1 LOSS OF AC BUS POWER SOURCES AB 1203.28 GOP-OLC-001.00 Attachment 28 Addendum 2 Close the BUS C1 (Di) to BUS C2 (D2) TIE BREAKER control switch for AC110 (AD110) or XFUR BD (AC) to BUS C1 (D1) Control Switch for ABDCI (AACD1) on Local Control Panel C3615 (C3616) when the DG1 (2)

. SYNCHRON0 SCOPE pointer is at the twelve o' clock position or slightly before the twelve o' clock position.

CAUTION: When the DG's receive an auto start signal,

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they automatically go to isochronous mode and remain in isochronous mode. Therefore,

, when the DG is parallelled to the system immediately decrease load and trip the DG output breaker AC101 (AD101).

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LOSS OF'AC BUS. POWER SOURCES AB 1203.28 GOP-OLC-001.00.

Attachment 28 ,

Addendum 3~

$ Procedure for Powering Busa C2 (D2) from C1 (D1) with C1 (D1) being Powered Only from DG 1-1 (1-2).

1 The Diesel Generator is running and serving C1 (D1) bus load only.

! Bus C2 (D2) is de-energized and all breakers are TRIPPED including Breakers AACC2 (ABDD2) and AC110

(AD110).

The Shift Supervisor has given his permission to apply load from Bus C2 (D2) to No. 1-1 (1-2) Diesel Generator.

i The Emergency Control T1ansfer Switch located on Bus C1 (D1) for Breaker AC110 (AL110) is in the NORMAL position.

Place the DG1 (2) SYNC switch HS 6221 (HS6231) in the BKR TO C2 (D2) position on Control Room Panel C5715 or -

place DG1 (2) SYNC SELECTOR switch in the BKR TO C2 (D2)

, position on Local Control Panel C3615 (C3616). t i Place the BUS C1 (D1) TO BUS C2 (D2) TIE BRER control switch for AC110 (AD110) located on Control Room Panel  ;

C5715 in the CLOSE position or place the BUS C1 (D1) '

to BUS C2 (D2) TIE BRKR control switch for AC110 (AD110) located on Local Control panel C3615 (C3616) in the CLOSE position. l Apply load to Bus C2 (D2) as directed by the Shift

! Supervisor.

.i CAUTION: Do not exceed rating limitations of the Diesel

! Genera tor.

t Completed _ Time Date ,

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