Chapter 3 (safety) Flashcards
You block switches with what?
4x4 cribbing
How many different sections of third rail can be located at a switching/crossover/interlock?
6
The third rail is a continuous rail (true/false)
False
You can touch the third rail after it’s been deenergized (true/false)
False
The electric power that controls switches is different from third rail power (true/false)
True
How many wheel chocks for a metro car
4
Signalers are positioned how many ft each side of incident
750 ft
Distance for flag gets in amtrack, b&o and csx?
2 miles
Crossovers and interlocks require how many WSAD’s
6
What level of accountability do we use for metro?
3
How many entry control points
One or two, never more than 3
2nd due engine at the secondary station on a tunnel box is responsible for what?
Accountability/control unit
Cars can store electrical current in their resistor grids for _____ minutes after 3rd rail power has been removed
15
FCDS is what?
Filter capacitor discharge switch
FCDS is located at the bottom of chopper control box, power should be discharged in ______ seconds after operation of the FCDS
15
If personnel are working under the train, the _____ must be operated
FCDS
Fan and vent shafts with fix ladders can be used by personnel (true/false)
False, too steep and narrow for adequate safety
A flagger will swing his flashlight ___________
Horizontally
If any member is found to be unaccounted for, _____ attempts will be made to ascertain their accountability and location. If after _____ attempts a mayday will be declared.
2 & 2
FCDS can store power for _____ minutes and power can be discharged in _____ seconds
15 and 15
Stray current may be higher when the 3rd rail is wet (true/false)
True
Personnel will not enter any fan shaft except when?
It is an emergency exit but with permission to make entry
How many wsads for an interlock/crossover
4-6
Generally, there should only be ___or _____ entry control points, never more than _____.
1-2 never more than 3
UDCs get placed where on a metro tunnel box (secondary station)
2nd due engines metro bag at secondary entry control point
Who are the accountability officers on a metro tunnel box?
2nd due Eng OIC (secondary)
3rd due Eng OIC (primary)
Members unaccounted for after ____ attempts with no contact a mayday will be called
2
