What is the Station Vent used for?

  • Thread starter MastersBound
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In summary, the station vent is a large stack attached to the side of a PWR reactor building. It is also known as the off-gas vent and is used for purging and venting the auxiliary building in case of accidents or leaks. It also helps maintain negative pressure in the building and all gases are filtered and monitored for radiation. It may also release small amounts of radioactive activity at times.
  • #1
MastersBound
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Typically on PWR's (not sure about BWR's) there is always a rather large stack that is attached to the side outside of the Reactor Bldg. It is known as the station vent. Can anyone tell me what this is used for and how it works? Also, can anyone tell me if this is the same as what is know as the "off-gas vent"?
 
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  • #2
Attached is a picture of the station vent I was inquiring about. Not sure what plant this is but it looks like a PWR.
 

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  • #3
I am thinking it may be the main steam dump valve but those should be on the main steam headers, and on the plant's I've seen they did not have vertical pipes like that. Based on its size that would be my guess though.
 
  • #4
Definitely not Main Steam. The Main Steam relief valves (around 10) are in the same area but do not use the Station Vent. I'm doing more research as we speak but apparently it is used for several different scenarios. It is predominantly used to purge/vent the Auxiliary bldg (not reactor bldg) or the annulus in case of an accident or leak or other scenarios. The aux. bldg remains at negative pressure for this particular reason. All exist "gas" goes through charcoal filters, etc and is rad monitored.

Hopefully I'll have more specifics as the day unfolds but would still like other forum members comments if can provide additional information.
 
  • #5
it's the exhaust stack for plant ventilation systems.
So at times modest amounts of activity will go out through it.
Ours was instrumented and high radiation shuts down vent system bottling everything up.

remember, we plant workers and our families live downwind too.

old jim
 

1. What is the purpose of the Station Vent?

The Station Vent is used to regulate air flow and maintain proper ventilation within a designated space, such as a room or building. It helps to remove stale air and circulate fresh air, promoting a healthier and more comfortable environment.

2. How does the Station Vent work?

The Station Vent works by using a fan or motor to pull air from the room or building and push it outside. This creates a negative pressure, which then pulls fresh air in through other vents or openings to balance the pressure. The process of air exchange helps to improve air quality and regulate temperature.

3. Where is the Station Vent typically located?

The Station Vent is typically located on the roof or exterior wall of a building. It can also be found inside specific rooms, such as bathrooms, kitchens, or laundry rooms, where air circulation is important.

4. What are the benefits of using a Station Vent?

The benefits of using a Station Vent include improved air quality, reduced humidity, and regulated temperature. It can also help to prevent the growth of mold and mildew, as well as reduce the spread of airborne contaminants.

5. Can the Station Vent be controlled?

Yes, the Station Vent can be controlled through a variety of methods, such as manual switches, thermostats, or automated systems. This allows for customizable air flow and temperature control for different spaces and situations.

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