Metro ESM 08

Question 1

From the Metro ESM

The metrorail system has__ types of electrical systems

Answer 1

3 types

Question 2

From the Metro ESM

name the types of metrorail electrical systems ?

Answer 2

1. traction power 2. AC power 3. Battery power

Question 3

From the Metro ESM

The most important electrical system to the fire/rescue service ?

Answer 3

Traction Power System

Question 4

From the Metro ESM

This electrical system conducts the electrical power to propel the rail cars ?

Answer 4

Traction Power System

Question 5

From the Metro ESM

This system provides the the electrical power to run lighting, ventilation and any of the other services not directly involved in propelling the rail cars.

Answer 5

AC Power System

Question 6

From the Metro ESM

This electrical system is found where ever emergency lighting is needed and also for the communications systems to keep them operational when normal electrical power is interrupted

Answer 6

Baterry Power

Question 7

From the Metro ESM

Traction power is used to ______________

Answer 7

Propel the rail cars

Question 8

From the Metro ESM

Traction power is also known as __________

Answer 8

Third rail power

Question 9

From the Metro ESM

AC ( alternating current ) voltage received from local utilities is converted to _______ for transmission to the rail cars.

Answer 9

750 volts DC ( direct current )

Question 10

From the Metro ESM

The energy companies supply Metro with the electric power through a series of ________

Answer 10

Traction Power Substations

Question 11

From the Metro ESM

Each substation is supplied from _____ how many separate feeders

Answer 11

2 separate feeders

Question 12

From the Metro ESM

_______volts is supplied from Potomac Electric company ( PEPCO )

Answer 12

13,800 VOLTS

Question 13

From the Metro ESM

____volts if supplied by virginia power.

Answer 13

34,500 VOLTS

Question 14

From the Metro ESM

Traction power substations are normally located about______________throughout the metro rail system.

Answer 14

Every mile

Question 15

From the Metro ESM

Traction power substations can be found___or ______ground.

Answer 15

above below

Question 16

From the Metro ESM

The transformers contain a coolant that does not contain any____________

Answer 16

PCB’S ( polychlorinated biphenyl )

Question 17

From the Metro ESM

The transformers are located in concrete and/ or block structures with a minimum fire rating of _____hours.

Answer 17

2 hours

Question 18

From the Metro ESM

Are there any sources of combustibles in the substations. True or False

Answer 18

FALSE

Question 19

From the Metro ESM

Each transformer is monitored by a sophisticated system that can shut down the transformer within_____________when a problem arises.

Answer 19

30 milliseconds

Question 20

From the Metro ESM

The traction substations are under the control of_____

Answer 20

OCC

Question 21

From the Metro ESM

________ is the means that electric power is transmitted to the rail cars.

Answer 21

Third rail

Question 22

From the Metro ESM

The third rail is located next to the________ on which the rail cars wheels rest.

Answer 22

Regular runninng rail

Question 23

From the Metro ESM

The Third rail is approximately ______inches higher than the regular rail.

Answer 23

4 1/2 inches

Question 24

From the Metro ESM

The electric power is fed to the third rail by a series of cables which are covered by”_______”.

Answer 24

Pot heads

Question 25

# From the Metro ESM The pot heads are ______or________in color.

Answer 25

orange or yellow

Question 26

# From the Metro ESM A ______color protective fiberglass cover is located over the third rail.

Answer 26

Gray

Question 27

# From the Metro ESM This gray protective fiberglass cover is rated to withstand______pounds per inch of force.

Answer 27

250 pounds per inch

Question 28

# From the Metro ESM The maximum length of a section of third rail is ______feet

Answer 28

800 feet

Question 29

# From the Metro ESM ETS boxes are located at length approximately______feet.

Answer 29

800 feet

Question 30

# From the Metro ESM What is in at ETS box? 1.____2.____3.______

Answer 30

1. telephone 2. schematic 3. red button

Question 31

# From the Metro ESM The primary purpose of these boxes is to allow _______ of the third rail power in an emergency.

Answer 31

de energizing

Question 32

# From the Metro ESM To remove power from a portion of the third rail, pick up the phone in the ETS box, contact OCC, by dialing"___"

Answer 32

"0"

Question 33

# From the Metro ESM When contacting OCC they will require the caller to identify themselves by____,______and______.

Answer 33

name, rank and unit #

Question 34

# From the Metro ESM The red mushroom button should only be pushed when there is an______________________.

Answer 34

imminent threat to life safety

Question 35

# From the Metro ESM ___% of the red buttons have been retrofitted with a guard around them

Answer 35

50%

Question 36

# From the Metro ESM To insure that all power is removed in the area of the emergency you must pick up the phone and dial __ and talk directly with ____

Answer 36

Dial 0 OCC

Question 37

# From the Metro ESM Testing of the third rail requires the use of a _________.

Answer 37

volt probe

Question 38

# From the Metro ESM _____volt receptacles are located throughout the metro system.

Answer 38

110 volt

Question 39

# From the Metro ESM 110 volt receptacles are found under every fluorescent light in the tunnels approximately every _____feet. they are also found under every other bench on the station platform.

Answer 39

80 feet

Question 40

# From the Metro ESM when testing a volt probe and there are no receptacles are available, you can use the_______on the fire apparatus.

Answer 40

power generator

Question 41

# From the Metro ESM For areas where no known electric sources are available, use two different volt probes___________to test third rail.

Answer 41

simultaneously

Question 42

# From the Metro ESM Once third rail power is _____ and _______ a WSAD should be affixed to the third rail.

Answer 42

tested and confirmed down

Question 43

# From the Metro ESM Should one of the WSAD paddles fall off of the third rail or running rail the ____________ will also activate.

Answer 43

warning horn

Question 44

# From the Metro ESM In the Metro system the principle used for electric distribution to run the rail cars is ______ from third rail and ______ return to the running rails.

Answer 44

positive, negative

Question 45

# From the Metro ESM To contact "start-up operations" use any wayside telephone and dial _____.

Answer 45

1081

Question 46

# From the Metro ESM What are the three separate types of electrical loads found in the Metro system?

Answer 46

Non-Essential Loads, Essential Loads and Emegency Loads

Question 47

# From the Metro ESM In the tunnels, emergency battery power will operate _____ of the lighting (every 4th light) above the safety walk.

Answer 47

25%

Question 48

# From the Metro ESM The WSAD will provide an ______ and ______ alarm if third rail power is restored.

Answer 48

audible and visual

Question 49

# From the Metro ESM During the pre-revenue phase testing of a new line, third rail power will be energized and under the control of ___________________.

Answer 49

"Start-up Operations"

Question 50

# From the Metro ESM Pepco supplies ________ volts to all Maryland and District of Columbia Metro Facilities.

Answer 50

13,800 Volts

Question 51

# From the Metro ESM Emergency batteries are designed to supply emergency power in the tunnels for up to ____________?

Answer 51

Three Hours