Radwaste Building HVAC

Question 1

What does the Radwaste Building HVAC do?

Answer 1

-Maintain Ventilation in process equipment areas
-Provide personnel safety access areas
-Restrict spreading of airborne radioactivity

Question 2

What does Radwaste Building HVAC consist of ?

Answer 2

-Radwaste building supply
-Radwaste Building Exhaust air system
-Radwaste Building Control Room recirculation

Question 3

How many Radwaste Building Normal AHUs are there? What do they do ?

Answer 3

-There are two normal AHU
-They condition outside air for Radwaste Building

Question 4

What is the evaporator cooling pad & evaporative Recirc. Pump used for on the Radwaste Normal AHU ? Where does it get water from ?

Answer 4

-Level is maintained by float level & uses domestic water to
-Water is pumped from evaporative module Recirc pump to top of evaporative cooling pad

Question 5

What does the RU-14 monitor ?

Answer 5

Samples & monitors radioactive particles &noble gasss exhausted from Radwaste Building

Question 6

What does the RU15 monitor ?

Answer 6

Monitors combined exhaust from Waste Gas system area

Question 7

What do RU-143 & 144 monitor?

Answer 7

Monitors plant vent

Question 8

How would the BAC be affected if Radwaste Building AHU& AFU are lost ?

Answer 8

Could impact BAC releases which causes exhaust humidity set point to exceed

Question 9

What happens if Radwaste exhaust humidity set point is exceeded?

Answer 9

BAC release flow rate would need to reduced to low humidity

Question 10

What happens instrument air going to damper drops below 30psig ?

Answer 10

Dampers will fail close & will trip fans on thermal overload