Containment Ventilation Flashcards
1
Q
What happens to containment ventilation on a containment isolation Phase A (CIA)?
A
CEQ Fans start,
CUV’s and instrument room vent fans stop
2
Q
What happens to containment ventilation on a Containment Ventilation Isolation (CVI) signal?
A
These fans trip off and their containment isolation valves go close - Containment purge relief fan Upper containment purge supply Upper containment purge exhaust Instrument room purge supply Instrument room purge exhaust Lower containment purge supply Lower containment purge exhaust
3
Q
What happens to containment ventilation system on a Containment isolation B (CIB)?
A
These fans stop. Pressurizer Enclosure fans CRDM fans Lower containment ventilation fans Reactor cavity fans
4
Q
What gives you a CVI?
A
High Radiation in upper or lower, SI, Phase A or B
5
Q
What gives you a Phase A
A
1lb lower containment
MANUAL
6
Q
What gives you a Phase B?
A
Lower containment High pressure 2.8lb
7
Q
What drains into the containment vent unit drain pot?
A
CUV
CLV
Instrument room vent fans.
