201.34 Non-Class 1E Vital 120 VAC

Question 1

• 201.34 Non-Class 1E Vital 120 VAC*
• • *

Function of Non-Class 1E Vital 120 VAC

Answer 1

Provide reliable power for Non-Safety Related Vital instrumentation and control loads necessary for normal power generation and shutdown

Question 2

• 201.34 Non-Class 1E Vital 120 VAC*
• • *

Function of 20 KVA 120 V UPS

Answer 2

Located in 31’ TGB battery charging room

• feeds uninterruptable power to DP048A (55’ TGB)

Question 3

• 201.34 Non-Class 1E Vital 120 VAC*
• • *

DP048A location and loads

Answer 3

55’ TGB outside East Stairwell

• Steam Generator Feed Pump indications and vibration monitoring
• EHC Control Cabinet (one of two power supplies)
• N-16 Instrument Cabinet ZLC-950
• RT- 8092 and 8093 29 TGB
• ARM Instrument Air Controller ZLP-134
• other items (POP4-VC-0001 Addendum 17)

Question 4

• 201.34 Non-Class 1E Vital 120 VAC*
• • *

Function of 25 KVA 120 V UPS

Answer 4

Located in EAB 10’ main corridor

• Provides single phase 120 VAC uninterruptable power to DP-005 & DP-006 (EAB 10’)

Question 5

• 201.34 Non-Class 1E Vital 120 VAC*
• • *

DP 005 and DP 006 locations and loads

Answer 5

EAB 10’

• Main Turbine controls
• Main Feedwater control valves
• CVCS controls
• Steam Dumps
• others (0POP04-VC-0001 addendum’s 12, 13, 14,15, and 16 )

Question 6

• 201.34 Non-Class 1E Vital 120 VAC*
• • *

Function of 45 KVA 120 VAC UPS

Answer 6

Located in EAB 60’ MG set room

• feeds DP003 and DP004

Question 7

• 201.34 Non-Class 1E Vital 120 VAC*
• • *

DP003/DP004 locations and loads

Answer 7

EAB 60’ MG Det Room

• DRPI
• Multiple Control Room recorders
• RHR valves
• One source of auctioneered Rod control power Others (0POP04-VC-001 Addendums 10,11, and 14)

Question 8

• 201.34 Non-Class 1E Vital 120 VAC*
• • *

Probable causes of DP048A Inverter/Rectifier Trouble Alarm / Annunciator Location

Answer 8

Annunciated on CP003, 3M02 B-7

• Loss of 480 VAC power to rectifier
• Rectifier trouble
• Loss of all incoming power to inverter
• Inverter trouble
• Instrument failure
• System ground

Question 9

• 201.34 Non-Class 1E Vital 120 VAC*
• • *

Actions for DP048A Inverter/Rectifier Trouble Alarm

Answer 9

• May auto transfer to alternate power source
• Dispatch operator to check local alarm lights

Question 10

• 201.34 Non-Class 1E Vital 120 VAC*
• • *

Probable causes and automatic actions of an “120 VAC INVRTR N1VCIV005 OR N1VCIV006 TRBL” alarm.

Answer 10

Loss of power to inverter

Inverter failure

Instrument failure

May auto transfer to alternate power source

Dispatch operator to check local alarm lights

Question 11

• 201.34 Non-Class 1E Vital 120 VAC*
• • *

DP048A (20KVA) Power Supplies

Answer 11

• Normal - 1F2
• B/U DC - 125 VDC 1A battery bus
• B/U VRT - 1G1 Switchback delay 30 secs

Question 12

• 201.34 Non-Class 1E Vital 120 VAC*
• • *

DP005, DP006 (25KVA) Power Supplies

Answer 12

• Normal - 125 VDC 1B battery bus
• B/U DC - none
• B/U VRT - 1J1 (DP005), 1J2 (DP006) Switchback delay 5 minutes

Question 13

• 201.34 Non-Class 1E Vital 120 VAC*
• • *

DP003, DP004 (45KVA) Power Supplies

Answer 13

• Normal - 1L1 (DP003), 1L2 (DP004)
• B/U DC - none
• B/U VRT - 1G8, 1G8 Switchback delay 30 secs