O.G. 5.23 attachment 3 coordinated positive pressure vent Flashcards
1
Q
The key to effective PPV is _____________________
A
controlling the flow path
2
Q
Opening with overhead doors can be reduced in size by
A
partially closing the door
3
Q
exhaust openings should be what size?
A
3/4 to 1 3/4 the size of the entrance opening
4
Q
removing screens increases efficiency of ventilation by
A
50%
5
Q
________should be considered when using gas blowers?
A
air monitoring
6
Q
Effective ventilation requires _____________
A
sequential ventilation
7
Q
Multi story buildings start from the floor with the ______________
A
lowest contaminated and work towards the top floor
8
Q
List 3 examples of PPV limitations
A
- Combustable dust
- flammable vapors
- concealed spaces
