ML19296A220

Monthly Operating Rept for Jan 1979

ML19296A220
Person / Time
Site:	Farley
Issue date:	02/14/1979
From:	ALABAMA POWER CO.
To:
Shared Package
ML19296A219	List: ML19296A216 ML19296A220
References
NUDOCS 7902210237
Download: ML19296A220 (8)

Text

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JOSEPH M. FARLEY NUCLEAR PLANT UNIT 1 NARRATIVE

SUMMARY

OF OPERATIONS JANUARY, 1979 In January, 1979, there were four unit shutdowns (all automatically initiated) and three power reductions. The unit tripped January 16 when inverter 1B tripped. An investi-gation revealed a grounded choke coil which caused the DC input fuse to blow. The choke coil and fuse were replaced and a unit startup was initiated January 17. Before the generator was tied to the grid on January 17, the unit tripped on S/G LO-LO level. The unit was returned to power on January 17.

The unit tripped January 18 due to RCP Bus Undervoltage.

An STP was being performed by the electricians when a fuse for the UV relay under test blew. When the fuse block was pulled to replace the blown fuse, both UV relays for one RCS loop were de-energized causing the unit trip. The unit was returned to power on January 18. While starting up the unit, delta-flux exceeded its band which resulted in more than 60 penalty points. The unit had to be limited to 300 MWe until January 19 when the unit was returned to 100%

power.

The unit tripped January 20 following a turbine trip due to loss af condenser vacuum (both circulating water pumps tripped during a rain storm). An investigation verified operability of 1A circulating water pump and the grounding of all 3 phases of 1B circulating water pump motor. Caus.e of the motor failure is unknown. The unit was returned to power January 21. After starting the unit up, unit power was limited to 600 MWe by condenser vacuum while a Unit 2 circulating water pump motor was being exchanged for 1B circulating water pump motor. Condenser vacuum allowed the unit power to be increased to 660 MWe on January 25. The unit was returned to 100% power on January 31.

The following significant safety-related maintenance was performed in January:

1. Replaced S/G blowdown pump 1A.

2. Replaced choke coil on 1B inverter.

7 9 0 2 210 /L376

3. Replaced 1B circulating water pump motor

4. Overhauled 1A&lc service air compressors

5. Repaired RPM indicator on 1-2A Emergency Diesel

6. Replaced bearings on Boric Acid Batching Tank Agitator Motor

7. Rocker arm inspection on 1-2A, 1B und 2B Diesel Engines

8. Replaced mechanical seal on lA BIT recirculating pump

9. Overhauled A train river water air compressor

10. Replaced B vacuum pump and an acid pump at the WTP

11. Doble tested various 550 KV and 230KV breakers

( OPERATING DATA REPORT DOCKET NO. 50-348 DATE 2/1/79 COMPLETEP ltY UGl:airston,1II TELEPlidNE (205)a W 5156 OPERATING STATUS Notes

1. Unit Name: Jomb M.

Farlev Unit 1

2. Reporting Period: January, 1979 1/Cummulative dat;a since

3. Licensed Thermal Power (MWt):

2652 12/1/77, date of commer-

4. Nameplate Rating (Gross MWe): 860 cial operation.- -

5. Design Electrical Rating (Net MWe): 829 -

6. Maximum Dependable Capacity (Grow MWe): 860*

7. Maximum Dependable Capacity (Net MWe): 829*

8. If Changes Occur in Capacity Ratings (Items Number 3 Through 7)Since Last Report. Gise Reasons:

N/A

9. Power Lesel To Which Restricted.lf Any (Net MWe): N/A *'

10. Reasons For Restrictions,if Any: _ N/A

(

This Month Yr. to Date Cu'rnulatise 1L llours In Reporting Period 744 744 10,248

12. Number Of flours Reactor Was Critical 684.9 684.9 8,928.7

13. Reactor Resene Shutdown llours 59.1 59.-1 1,066.6

14. Ilours Generator On Line 668.4 668.4 8,754'.1

15. Unit Resene Shutdown Ilours 0 0 -

0

16. Gro60 penalty points).

05 790120 F 21.7 A 3 N/A IIF Motorx Unit trip following a turbine trip

. due to low vacuum in the condenser.

Both circulating water pumps tripped during a rain storm. Electricians verified operability of 1A pump motor.

1B motor grounded in all 3 phases,00C.

(Replacing with Unit 2 motor.) The unit was returned on line with only one circulating water pump available.

I 2 3 4 F: Forced Reason: Method: Exhibit G -Instructions S: Schedu'ed A Equipment Failure (Explain) 1-Manual for Preparatioa of Data B Maintenance or Test 2. Manual Scram. Entry Sheets for Licensee c-Refueling 3. Automatic Scram. Event ReporI (LER) File (NURCO.

D Regulatory Restriction 4 Other (Explain) 0161)

E Operator Training & License Examination F. Administrative 5 G-Operational Error (Explain) Exhibit I . Same Source (9/77) ll Other (Explain)

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.s A ^ /q

( l UNITSIlUTDOWNS AND POWER REDUCTIONS DOCKET NO. 50-348 UNIT NA31E Farlev L'n i t 1 DATE 2-1-79 COAfPLETED DY t' c u ,1 -o n , III REPORT 5!ONTil January TELEPfl0NE (2C D 800-5156 w.

, ,!? 3 .Y Licensee E r, "o Cause & Corrective No. Date 3g .a s 5  ?

F R

y-s 5

Event Report #

17 mU gU-o Action to Prevent Reciirrence 1 di =!

e u 6

06 790121 F 88 A N/A N/A HF Motorx Unit operating at a reduced load of 600 E'e due to IB circulating water motor 00C. Condenser vacuno is limit for operating the unit.

07 790125 F 141.4 A N/A N/A HF Motorx Condenser vacuum allowed t:ra Unit power to be increased to 660 MWe.

Replaced pump notor and returned unit to 100% load. -

I 2 3 4

' F: Forced hiethod:

Reason: Exhibit G Instructions S: Scheduled A Equipment Failure (Explain) 1 htanual for Prep.iration of Data B htaintenance or Test 2 h!anual Scram. Entry Sheets for Licensee C-Refueling 3 Automatic Scram. Event Report (LER) File (NUREG-D. Regulatory Restriction 4-Other (Explain) 0161)

E-Operator Training & License Examination F Administrative 5 G Operational Error (Expla!n) Exhibit I Same Source (9/77) li Other (Explain)

.