Metro ESM 10 Flashcards
(29 cards)
From the Metro ESM
What is the movement of air in a tunnel or underground
Ventilation
From the Metro ESM
What are the 2 distinct condition maintained for ventilation
Normal- ventilation/ Emergency Condition
From the Metro ESM
Train movement in the tunnel and useage of mechanical fan to assist fresh air exchange during what condition
Normal- ventilation
From the Metro ESM
Useage of mechanically fan are used to supply mode or exhaust mode during what condition
Emergency Condition
From the Metro ESM
Emergency Condition
To limit or exclude passengers and Fire department personnel from exposure to heat and smoke
From the Metro ESM
Piston effect/ Normal Ventilation system
Method air exchange, as trains move forward in the tunnel it forces air ahead and draw air in behind it, known as
From the Metro ESM
What is located between stations to accomplish the exchange of air
Vent shaft
From the Metro ESM
In case emergency what work in conjunction with the system of a fire.
Vent shaft
From the Metro ESM
In a tunnel what are the 4 different vent modes
High temperature mode/ Emergency mode, Normal temperature mode/50 to 95 degrees Fahrenheit, Low temperature mode/below 50 degrees Fahrenheit,High temperature mode/above 95 degrees Fahrenheit
From the Metro ESM
What mode is fan are operating under, during the control of OCC in the direction necessary
Emergency mode
From the Metro ESM
Can the fire department control the fan once they arrive on the scene
Yes/ IC (Incident Command) take over from OCC
From the Metro ESM
Dose station has undergrounds platform ventilation system
Yes
From the Metro ESM
How does the undergrounds platform ventilation system
Assist in air exchange, consist of fans that exhaust and draw air from the under the train and away from the platform, in order to divert hot bursts air away from passengers
From the Metro ESM
The 5 Station with under-platform vent system fan only in exhaust mode.
Dupont Circle/Farragut North/Metro Center/Judiciary Square/Gallery Place
From the Metro ESM
What is the name of the box that operate the supply and exhaust mode
Control box
From the Metro ESM
Where are those boxes located and how many are there.
Located at each end of the platform/2 control box
From the Metro ESM
When fans are manually operating to exhaust it is called
Emergency exhaust
From the Metro ESM
Emergency supply is when
When fans are manually operating to supply air
From the Metro ESM
Fan operating by the thermostat or un the control of OCC can
Automatic operation
From the Metro ESM
Do all control boxes have a off stting
No
From the Metro ESM
Who will the Fire Department contact if they are going to operate the fans in manual mode
OCC
From the Metro ESM
Fan shaft contain from 2 (two) to 7 (seven) ____in ________ cfm (cubic feet per min) exhaust or ____ cfm supply fans
60in, 50,000, 35,000
From the Metro ESM
Who will begin operation the emergency fan in the direction deemed most appropriate for the condition reported
OCC
From the Metro ESM
The controller of the fan are electric/pneumatic, so when activation it normally take ______ second to start up
40 to 60
