[HR] Radwaste HVAC Flashcards
[HR]
Functions? (3)
-maintain ventilation in process equipment areas
-personnel safety in access areas
-restrict spreading of airborne radioactivity
[HR]
Which location features recirculation of air?
How is fresh air and pressurization introduced to recirc location?
-RW Control Room
-Recirc Air mixes w/ RW AHU Supply Air
[HR]
What temp is RW CR maintained?
70 – 80F
[HR]
Why does the system maintain RW Bldg at a negative pressure?
Minimizes amount of uncontrolled/unmonitored release of potentially radioactivity air from RW to O/S atmosphere
[HR]
What 6 systems vent to [HR]?
[GR] Gaseous Radwaste (GR)
[LR] Liquid Radwaste (LR)
[SR] Solid Radwaste (SR)
[CH] Chemical and Volume Control (CH)
- VCT
[SS] Nuclear Sampling (SS)
[RD] Radioactive Waste (RD)
[HR] and [DS]?
[DS] Provides water to air washers (RW A/C)
[HR]
What provides cooling water to the RW CR ACU?
[WC] Normal Chilled Water System
[HR]
What [GR] components vent to the [HR]? (2)
[GR] Waste Gas Surge Tank relief
[GR] Compressor pre-filter, suction filter and package
System release path discharges upstream of the AFUs
[HR]
What components of the [LR] Liquid Radwaste system vent to the [HR] system? (5)
Evaporator,
surface condenser
and heater
Concentrate Monitor tanks
LR system Holdup Tanks
[HR]
What [CH] components vent to [HR]? (2)
- BAC condensate & ion exchanger
[HR] What component of [SS] Nuclear Sampling System vents to [HR]?
O2 Analyzer Exhaust
[HR]
What part of [RD] Radioactive Waste Drain System vents to HR system?
[RD] RW sump
[HR]
What system provides air to the HR air dampers?
What happens if air is lost?
[IA] Instrument air
If [IA] is lost, the dampers fail closed causing the AHUs / AFUs to trip on overload
[HR]
Which radiation monitor tracks the GR system release flowpath?
RU-12
Which radiation monitors keeps track of the plant vent?
RU-143 and 144
The discharge of the Radwaste Building HVAC system is monitored by what component? Where is thi component located?
RU-14, upstream of the AFUs
RW building roof