Containment Building HVAC HJ

Question 0

What is the function of the OSA normal AHU?

Answer 0

Provides required makeup outside air to the control room and control building normal AHUs.

Question 1

What rooms does the control building normal AHU supply ventilation to?

Answer 1

Air handling equipment rooms A & B (74')
A & B switchgear rooms (100')
ABCD battery rooms
Remote shutdown rooms
Lower cable spreading room (120')
Inverter and comm equip room
Corridor
Corridor (140')
Offices or spaces
Upper cable spreading room (160')
Microwave room
Lobby

Question 2

What provides air to the comm room and inverter room?

Answer 2

Control bldg norm AHU

Question 3

What is the function of the ESF switchgear room norm AHUs?

Answer 3

Assists in cooling the DC equipment and ESF switchgear rooms

Question 4

What signals cause the control room essential AHUs to start?

Answer 4

SIAS
CIAS
CRVIAS
CSAS
CREFAS
LOP

Question 5

What causes the ESF switchgear essential AHUs to start?

Answer 5

SIAS OR LOP

Question 6

What causes the ESF equipment room essential AHUs to start?

Answer 6

SIAS or LOP

Question 7

Where does the battery room ventilation normal exhaust fans discharge?

Answer 7

Directly to the outside atmosphere.

Question 8

What ESFAS signal causes the battery room essential ventilation fans to start?

Answer 8

SIAS or LOP

Question 9

What ESFAS signals will cause the toilet and kitchen exhaust fans dampers to isolate?

Answer 9

LOP
SIAS
CREFAS
CRVIAS
Dampers close but fans stay running

Question 10

How many floors can the normal smoke removal fan be aligned to at a given time and how are they aligned?

Answer 10

One floor at a time and must be aligned manually

Question 11

What safety functions are associated with the battery room normal exhaust fans?

Answer 11

Will not draw from a room where the CO2 fire suppression system was recently used to be sure it serves it’s function.
Or when the essential exhaust fan starts

Question 12

What system provides chilled water for the normal control room and control building cooling coils?

Answer 12

WC normal chilled water.

Question 13

What system provides chilled water for the essential train A & B cooling coils?

Answer 13

EC essential chilled water.

Question 14

What system provides air washer make up water?

Answer 14

DS

Question 15

What ESFAS signal is actuated upon rad monitoring alert of contamination?

Answer 15

CREFAS UPON HI HI RAD LEVELS

Question 16

What ESFAS signals will render the smoke removal system disabled.

Answer 16

SIAS or LOP

Question 17

What interlock will prevent the control room normal AHUs from starting?

Answer 17

The outlet dampers must be open.

Question 18

What doe the respective A and B train ESF switchgear essential AHUs cool?

Answer 18

A
Battery room A and C
ESF switchgear room A
B
Batt room B and D
ESF switchgear room B
Each unit has a hi efficiency filter bank, cooling coil and fan

Question 19

What signals cause the ESF switchgear room essential AHUs to start?

Answer 19

SIAS

LOP

Question 20

What do the respective A and B train ESF equipment rooms cool?

Answer 20

A
Equip rooms A and C
Batt rooms A and C
ESF switchgear room A
B
ESF equipment room B and D
Batt rooms B and D
ESF switchgear room B

Question 21

Why is it important to ventilate the battery rooms?

Answer 21

To prevent the build up of hydrogen.

Question 22

What ESFAS signals prevent the smoke removal from the 140’ of the control building until the signal has been reset?

Answer 22

LOP
SIAS
CRVIAS
CREFAS

Question 23

What signals will prevent smoke removal from the 100’ of the control building until the signal has been reset?

Answer 23

LOP

SIAS