Normal Lighting(QA), Essential Lighting(QB),Emergency lighting(QD)

Question 1

What is normal lighting(QA) used for ?What does QA provide power to ?

Answer 1

-Illuminated 90% of power block of each unit
-120VAC receptacles throughout unit
-Misc. space heaters & fans
-QD lighting rechargeable battery packs
-QD exit signs
-In plant communications(QD)
-Freeze protection system(QJ) Distr. panel at WRF

Question 2

What does Normal Lighting consist of ?

Answer 2

-Non class 480VAC load center
-480VAC lighting D-panel
-480->120VAC transformer
-120VAC lighting D-panel

Question 3

What does NGN-L17 supply power to ?

Answer 3

Four 480VAC MAIN Dpanel(QAND01,QAN-D03,QAN-D05,& QAN-D07)

Sends power through 480/120 transformer to non class load center Dpanel

Question 4

Where do the 480/120VAC lighting distributions panel get there power from ? (NGN-L17)

Answer 4

From 480VAC MAIN Distribution panel

Question 5

What does the 480/120VAC lighting D-Panel supply power to ? (NGN-L17)

Answer 5

Supplies power to lighting in the Aux. building, Fuel Building, and containment Building

Question 6

What does QAN-D01 supply power to ? (NGN-L17)

Answer 6

Supplies 480VAC power to Aux. Building Lighting Distribution Panels
-QAN-D01D
-QAN-D01F

Question 7

What does QAN-D05 supply power to ? (NGN-L17)

Answer 7

480VAC power through 480v/120v transformer to Containment Building Lighting Distribution panel:
-QAN-D05 A-F

Question 8

What does load center distribution panel NGN-D03 supply power to ? (NGN-L17)

Answer 8

Supplies power to the Control Element Drive Mechanism Control System (CEDMCS) control panel internal lighting

Question 9

What does NGN- L18 supply power to ?

Answer 9

Four MAIN D-panels:
-QAN-D02
-QAN-D04
-QAN-D08
-QAN-D09
Two non class 480VAC Load center D panel:
-NGN-D11
-NGN-D13

Question 10

What does Essential Lighting(QB) provide light to ?

Answer 10

-Control room
-Control room envelope
-Remote shutdown Room

Question 11

What percentage of lighting does QB provide for the units ?

Answer 11

10%

Question 12

What is Essential Lighting required to provide sufficient illumination?

Answer 12

-Support local manual operation for safe shutdown in case of a fire
-allows personal safe access/egress during loss of normal lighting

Question 13

How does QA interface with QD ?

Answer 13

Normal lighting supplies emergency light fixtures and exit signs in areas where essential lighting is not installed

Question 14

What’re the TWO subsystems for Essential lighting (QB)?

Answer 14

Control building & other areas

Question 15

What’re the equipment within each of the QB subsystems?

Answer 15

Control Buiding:
-2 voltage regulating transformers
-2 MAIN distribution panels
-Several lighting distribution panels
-Two lighting circuits for control room and remote shutdown

Question 16

Where does Essential Lighting receives its power from ?

Answer 16

Two Class MCC, PHA-M31 & PHB-M32, power all Essential Lighting in Control Room,CR Envelope, & Remote shutdown room

Question 17

What provides power to Essential lighting (QB) that provides light to OTHER areas than the control room ?

Answer 17

Two Class 480 Load Center, PGA-L35 & PGB-L36, provide power through a SIAS breaker to a NON-class Main Distribution panel

Question 18

What does the essential lighting 480VAC main distribution panel supply power to ?

Answer 18

-essential lighting to their respective area
-charging batteries of Emergency Lighying system safe modular
-Fire Protection