Metrorail Emergency Service

Question 1

May the emergency stop switch on the kiosk escalator monitoring panel be used to stop escalators?

Answer 1

No, because this emergency stop switch has been disconnected;
the emergency stops are located only on the escalators.

Question 2

Each yard and service facility is composed of several buildings and areas. Which buildings typically contains a “stinger” 750-volt system that allows power to be supplied to the rail cars to move them in and out of the building?

Answer 2

The service and inspection shop.

Question 3

What statements about the wayside telephone system is CORRECT?

Answer 3

Conference calls can be made from a wayside telephone by notifying the Operations Control Center (OCC).

Question 4

When a fire alarm is received from a zone in a station, the automatic public address announcement system (APAAS) activates to provide the station manager with a pre-alert of a fire alarm that needs attention. The station manager will have_____ to react to the alarm.

Answer 4

2 minutes

Question 5

Five types of sensors are used in the Metrorail fire alarm system. Which type is used in sensitive or critical areas, such as train control rooms and communication rooms?

Answer 5

Ionization detectors.

Question 6

An alarm is transmitted by flammable vapor and gas detection (FV&G) sensors if ambient vapor levels are exceeded. The system is calibrated so that a warning is transmitted if _____ percent of the lower flammable limit for the product is reached, and an alarm is transmitted if _____ percent of the limit is reached.

Answer 6

20; 40

Question 7

What statements about the warning strobe and alarm device (WSAD) is CORRECT?

Answer 7

Should one of the WSAD paddles fall off of the third rail or running rail, the warning horn will activate.

Question 8

When passengers are trapped in an elevator, several procedures should be rechecked or attempted to see if the problem can be corrected without the assistance of the elevator mechanic. What should DCFEMS attempt FIRST in this situation?

Answer 8

Shutting down and restoring the main electrical power in the elevator machine room.

Question 9

According to the Metrorail Emergency Services Manual, for elevators , to originate a call from the kiosk, personnel should depress the _____.

Answer 9

appropriate elevator car or landing button and then depress the “press-to- talk” button

Question 10

According to the Metrorail Emergency Services Manual, what is the recommended procedure for removing entrapped passengers from an escalator?

Answer 10

Prying the steps away from the sideboards.

Question 11

What shall apply when evacuating passengers from a tunnel?

Answer 11

Prior to evacuating passengers into the tunnel, all third rail power must be shut down between the emergency scene and the planned exit locations.

Question 12

There are three separate types of electrical loads found in the Metrorail system: non-essential, essential and emergency. What is/are considered an emergency load?

Answer 12

Communications equipment.

Question 13

Tunnel ventilation is achieved by four different modes of operation. In the high temperature mode (above 95 degrees Fahrenheit), _____.

Answer 13

dampers are open and fans are operating in the exhaust setting

Question 14

The Metrorail Emergency Services Manual includes what tactical considerations for using tunnel fans during evacuations?

Answer 14

If fans are not in operation, shafts may experience the chimney effect.

Question 15

The types of flammable gases and vapors encountered near the Metrorail right-of- way are gasoline, liquefied petroleum gas (LPG) and natural gas. What gases and vapors are the MOST likely substances to be found?

Answer 15

Gasoline and LPG.

Question 16

According to the Metrorail Emergency Services Manual, what is/are the PRIMARY means of emergency evacuation from a station?

Answer 16

Escalators

Question 17

When a station fire alarm is activated, the electrical power to the escalators providing entry into the station will be shut down automatically. There is up to a _____ delay from the time of fire alarm activation to the time of escalator stoppage.

Answer 17

2-minute

Question 18

Chain markers are part of a system of measurement along the right-of-way. The second piece of information in a typical marker, a number, indicates the _____.

Answer 18

track number

Question 19

What statements about tunnel emergency exit shafts is CORRECT?

Answer 19

In the tunnels proper, emergency exit shafts may be located in vent shafts, fan shafts or single-use “emergency exit shafts” between stations.

Question 20

When AC electric power is out, emergency battery power will supply lighting and communications in stations for up to _____ hour(s).

Answer 20

three

Question 21

In the emergency trip switch (ETS) box is a red mushroom button. This button is used to _____.

Answer 21

trip breakers in the traction power substation to shut down electrical power and should only be pushed when there is an imminent threat to life safety

Question 22

Tunnel ventilation is achieved by four different modes of operation. In the normal temperature mode (59 to 95 degrees Fahrenheit), _____.

Answer 22

dampers are open but fans are not operating

Question 23

If DCFEMS personnel are going to operate tunnel fans in manual mode, they____.

Answer 23

Must explain the reason for doing so to the OCC and return the fans to the automatic mode after the operation.

Question 24

There are two types of magnetic sensors that are used as intrusion alarms. One type has a key override capability and is used on ______.

Answer 24

Doors

Question 25

In which station component are monitors for the passenger emergency reporting system (PERS) typically located?

Answer 25

The kiosk

Question 26

What is considered the PRIMARY mean of emergency evacuation at a station?

Answer 26

Escalators

Question 27

In the event that passengers are trapped in an electronic-hydraulic elevator, the station manager will attempt to free the passengers prior to the arrival for fire/ rescue units. After conferring with the station manager to see what efforts have been attempted, fire / rescue personnel should take which action first?

Answer 27

Ensure that an elevator mechanic has been dispatched to the scene.

Remove power from elevator using the main power switch in the machine room

Question 28

A pressure switch is coated on each escalator at teh sidewall panel where the steps flatten out, prior to passing the comb plate at the top or bottom of the escalator, it stops the escalator should it detect something causing between the side wall panel and the step. It requires ___ pounds of pressure to activate.

Answer 28

150

Question 29

The metro rail emergency service Manual includes considerations for emergency evacuation of people from a train into the tunnel?

Answer 29

Hand lights will be in emergency exit shafts to highlight potential problem area and trip hazards to the evacuees.

Question 30

The ____is usually the largest building in a yard and service facility, containing rail car maintenance and repair facilities. This building contains a “stinger” 750-volt system that allows power to be supplied to the rail cars to move them in and out of the building.

Answer 30

Service and inspection shop

Question 31

In the emergency trip switch (ETS) box is a red mushroom button. This button is used to ____.

Answer 31

Trip breakers in the traction power substation to shut down electrical power and should only be pushed when there is an imminent threat to life safety.

Question 32

The emergency tunnel evacuation car (ETEC) is used to remove non ambulatory passengers. From the site of an incident. How many passengers can it handle?

Answer 32

4