TB 162 - Metro Rail Regional Connector Phase

Question 1

The MRCTC project will provide an underground light rail system connecting the what to the 7th/Fig station?

Answer 1

Metro gold line

Question 2

What is the expected completion date for the MRCTC?

Answer 2

2020

Question 3

When did excavation for the tunnel construction begin?

Answer 3

September 2014

Question 4

What are the 3 new underground stations that will be implemented in the project?

Answer 4

1st/central
2nd/broadway
2nd place/Hope

Question 5

What is the budget for the project?

Answer 5

1.366 billion dollars

Question 6

How long is the addition from

The metro rails little Tokyo/arts district to the 7th/fig station?

Answer 6

1.9 miles

Question 7

The connector will provide a 1 seat ride between Azusa and what between east LA and Santa Monica (phase II) without transferring lines?

Answer 7

Long Beach

Question 8

The what site is located between the 1st and alameda branches of the alignment?

Answer 8

“Mangrove”

Question 9

The what will provide the design build contractors use and space for a tunnel boring machine (TBM)?

Answer 9

“Mangrove”

Question 10

The 1st street/central avenue cut and cover station ends beneath the intersection of 1st and alameda, the alignment splits into how many directions?

Answer 10

2

Question 11

The what will be constructed by cut-and-cover excavation methods, with branches extending to east and north?

Answer 11

“Wye” (2 legs of a true eye)

Question 12

The eastern branch extends approximately how many feet within a cut-and-cover excavation to the beginning of an open trench structure?

Answer 12

419 feet

Question 13

The open trench structure extends approximately how many feet father east toward the end of the alignment along 1st street?

Answer 13

401 feet

Question 14

The northern branch adjacent to alameda street extends approximately how many feet within a cut and cover excavation to the beginning of an open trench structure?

Answer 14

812 feet

Question 15

The open trench structure extends approximately how many feet farther north to the beginning of an above grade section?

Answer 15

409 feet

Question 16

The depth of the excavation will range from a few feet approximately how many feet farther north to the beginning of an above grade section?

Answer 16

409 feet

Question 17

The depth of the excavation will range from a few feet to approximately how many feet?

Answer 17

45 feet

Question 18

Along the 1,354 foot long section of the cut and cover tunnels (flower street), the depth of the excavation will range approximately how many feet?

Answer 18

50 to 55 feet

Question 19

For the 1st/central station, the depth of the excavation will be approximately how many feet below existing ground surface?

Answer 19

45 to 50 feet

Question 20

For the 2nd/broadway station, the depth of the excavation will be approximately how many feet below existing ground surface?

Answer 20

95 to 100 feet

Question 21

For the 2nd/Hope station, the depth of the excavation is approximately how many feet below the sidewalk elevation adjacent to hope and general Thaddeus kosciuszko way?

Answer 21

105 feet

Question 22

For the 2nd/Hope street station, the depth of the excavation will be approximately how many feet below the existing ground surface at the west end of the station?

Answer 22

85 feet

Question 23

Where is the 1 minded crossover structure located?

Answer 23

Immediately east of the 2nd street/broadway station

Question 24

The 1 minded cross over structure is how many feet in length?

Answer 24

289 feet

Question 25

The finished internal dimensions of the 1 minded crossover structure would be approximately how many feet wide and high?

Answer 25

56 feet wide | 30 feet high

Question 26

Ground cover over the cavern is approximately how many feet?

Answer 26

60 feet

Question 27

Cross over caverns are anticipated that they will be constructed using what to enlarge the previously bored tunnels?

Answer 27

Sequential evacuation methods (SEM)

Question 28

There is a possibility that during tunneling operation, pockets of what gas may be encountered?

Answer 28

Methane

Question 29

Cal OSHA has listed the project as what and has identified hazard mitigation through use of a ventilation system and constant air monitoring?

Answer 29

“Potentially gassy”

Question 30

All what will run the entire length of the tunnel?

Answer 30

Utilities

Question 31

How large of a pipe provides a water system for cooling the TBM and water for firefighting operations?

Answer 31

46”

Question 32

The project is equipped with 2 1/2” NST outlets every how many feet?

Answer 32

200 feet

Question 33

Intrinsically safe fans with how many CFMs provide ventilation and evacuation air from the tunnel through a 66” pipe?

Answer 33

100,000 cfms

Question 34

The limits of the stations, crossover cavern, 2 end sections and the cut and cover tunnel section result in 3 reached of what bored tunnels?

Answer 34

Twin bored tunnels

Question 35

The TBM provide an excavation diameter of how many feet?

Answer 35

22 feet

Question 36

What reach extends from 1st/central to a crossover cavern a distance of 2,273 feet?

Answer 36

Reach 1

Question 37

For reach 1, the depth of cover will range from approximately how many feet tunnel crown and existing ground surface?

Answer 37

2 to 65 feet

Question 38

What reach extends east/southeast from 2nd/Hope a distance of 1,630 feet?

Answer 38

Reach 2

Question 39

Reach 2 has a depth of cover ranges from approximately how many feet along this reach?

Answer 39

70 to 130 feet

Question 40

From 2nd/Hope station, a distance from tunnel crown to storm drain invert approximately how many feet?

Answer 40

25 to 45 feet

Question 41

What reach extends a distance of 1,035 feet with one cross passage at the 1st/central station?

Answer 41

Reach 3

Question 42

Reach 3 will be beneath south flower street with a depth cover ranging from approximately how many feet?

Answer 42

30 to 60 feet

Question 43

What 3 portals of entry during construction of the MRCTC project will the fire department respond to?

Answer 43

1st/central 2nd/broadway 2nd/Hope

Question 44

Entry portals are how many feet deep and equipped with extinguishing systems, fire detection devices, and emergency lighting?

Answer 44

45 to 90 feet

Question 45

Adjacent to the entry portal, a tag/in/tag out system used for employee accountability is known as what?

Answer 45

“Brass board”

Question 46

Each TBM has approximately how many miners with additional personnel above ground?

Answer 46

10 miners

Question 47

During shift change how many personnel may be on site?

Answer 47

50 to 75

Question 48

Hours of operation will vary dependent on what?

Answer 48

Noise and traffic restrictions

Question 49

There is a 13,200 volt AC supply in the tunnel that is transformed down to how many volts?

Answer 49

480 volts

Question 50

The main panel for the project is located at what site?

Answer 50

Mangrove site

Question 51

In order to turn off system, who must you confer with?

Answer 51

Site engineer

Question 52

Hard-wired mining phones during the tunnel operation are every how many feet as well as on the TBM and at cross passages and the portals?

Answer 52

800 to 1,000 feet

Question 53

How many large scale fire type incidents occurred during the construction phase of the metro red line?

Answer 53

2

Question 54

If the atmosphere in the tunnel is compromised, entry will be limited to who?

Answer 54

USAR certified members wearing re-breathers

Question 55

Injured victims are to be brought outside of tunnel and will be lifted on a stokes litter basket by who at grade level?

Answer 55

Construction workers (crane operators)

Question 56

Cal OSHA requires that tunneling contractors provide rescue team personnel of more than how many workers will be operating in a tunnel or shaft?

Answer 56

10 workers

Question 57

The fire department ha agreed to be the rescue team per Cal OSHA because we meet the requirement of having a rescue team onsite within how many minutes?

Answer 57

30 minutes

Question 58

MFC will dispatch who for reported incidents in the tunnel or shaft during construction phase?

Answer 58

``` 3 engines 2 LF 2 BCs 1 ALS RA 1 squad 1 heavy rescue 1 tunnel utility 1 tunnel utility certified engine 1 USAR group ```

Question 59

Tunnel rescue requirements are restrictive and carefully monitored by who?

Answer 59

Cal OSHA

Question 60

For all fire and EMS incidents that occur below grade will require what PPE?

Answer 60

Full PPE

Question 61

Fire department members may enter the tunnel to affect a rescue as long as they comply with CCR title 8, section what sub chapter 20-tunnel safety orders?

Answer 61

8430

Question 62

First responders in order to facilitate a rescue may utilize on site what to determine atmospheric levels?

Answer 62

Monitoring experts

Question 63

By law all personnel who enter a mining site must wear a how long of a self rescue device to provide a means for escape from a hazardous non-breathable atmosphere?

Answer 63

1 hour

Question 64

For fire personnel the breathing apparatus policy is predicated on what 2 possible atmospheric conditions?

Answer 64

Non compromised and compromised

Question 65

First responders may obtain tunnel atmospheric information from who?

Answer 65

A regional connector constructors underground safety officer, supervisor, MTA inspector or from the gas indicators in the onsite construction trailer

Question 66

If the fire department issued 3-gas monitor registers an alarm, the area should be considered a compromised atmosphere as the monitor is pre set for allowable levels of what?

Answer 66

Oxygen, CO, and LEL

Question 67

What are maintained and stored at each portal entry by the contractor for the specific use of fire personnel?

Answer 67

Self rescuer respirators

Question 68

The self rescuer respirators for the fire department keep rescuers compliant with the law by having a separate how many hour method of escape breathing capacity?

Answer 68

1 hour

Question 69

Types of incidents with a non-compromised atmosphere where members must wear an SCBA and a self rescue device are what?

Answer 69

EMS Physical extrication equipment Confined space rescue Collapse or flooding

Question 70

An SCBA and self rescuer respirators is required and personnel are limited to initial observation of atmospheric testing for what conditions in a compromised atmosphere?

Answer 70

2 member team in sight of opening 4 member team if they will be out of sight of opening A back up team is standing by If the entry does not exceed 500 feet

Question 71

Members entering a compromised atmosphere are limited to how many minutes of work with a 45 and 60 minute bottle?

Answer 71

45 min bottle: 9 minutes | 60 min bottle: 12 minutes

Question 72

Entry into a tunnel with a known compromised atmosphere beyond initial observation or atmospheric testing is limited to what certified members only?

Answer 72

USAR

Question 73

Certified USAR members must utilize what periodically in a tunnel that has a compromised atmosphere?

Answer 73

Drager re-breathers and take gas readings periodically

Question 74

If a fire or explosion occurs in the tunnel, re breathers are not acceptable because who does not certify them as a firefighting breathing apparatus?

Answer 74

NIOSH

Question 75

USAR entry teams may use either what for entering a compromised atmosphere for respiratory protection?

Answer 75

Positive pressure breathing apparatus or supplied air (air cart)

Question 76

Where is the tunnel utility assigned to which is an RA with 18 drager re-breathers?

Answer 76

Fire station 88

Question 77

The IC shall evaluate a what in initiating a direct fire attack?

Answer 77

Risk versus gain

Question 78

A 6 inch temporary pipe supplied by a hydrant with 2 1/2” outlets every how many feet with FDCs located next to hydrant at ground level make up the water system during construction?

Answer 78

200 feet

Question 79

Engineers shall pump a maximum of what PSI into the FDCs?

Answer 79

150 psi

Question 80

The second arriving company will establish staging where?

Answer 80

Above ground in close proximity to the portal opening

Question 81

The third arriving company will operate in the portal adjacent to the tunnel and is responsible for what?

Answer 81

Technical support

Question 82

Technical support is augmented with USAR certified staffing from the first arriving what?

Answer 82

USAR taskforce

Question 83

First arriving USAR taskforce officer established what in the portal adjacent to tunnel?

Answer 83

Tunnel division

Question 84

The remainder of the first arriving USAR task force will prepare for what?

Answer 84

Tunnel entry operations

Question 85

Operations when implemented, normally operates at what level in proximity to command post?

Answer 85

Surface level

Question 86

Who reports to operations?

Answer 86

Tunnel division/branch, perimeter control, hazmat group, fire suppression group, medical group/branch, and staging

Question 87

Tunnel division will ensure that all emergency operations are discontinued and the tunnel evacuated should the tunnel atmosphere meet or exceed what percentage LEL?

Answer 87

20%

Question 88

What is logistics responsible for?

Answer 88

Flow of equipment to support incident, control utilities, units under their supervision are functioning properly

Question 89

Base may be established by available what from the first alarm assignment?

Answer 89

Engineers

Question 90

Where will the equipment pool be located?

Answer 90

Adjacent to the vertical shaft

Question 91

Where will lobby/systems control be located?

Answer 91

In contractors trailers

Question 92

What 3 intrinsically safe methods of electronic communications are there within the tunnel?

Answer 92

Contractor hardwire communication system USAR confined space communications system LAFD 800 MHZ radio

Question 93

Every how many feet within the tunnel at each portal, station box and at cross passages are there contractor hardwire telephones?

Answer 93

1000 feet

Question 94

USAR confined space communications system have how many feet of wire fire communication?

Answer 94

Over 1000 feet

Question 95

LAFD 800 MHz radios will only be useful in what mode of line of sight?

Answer 95

Direct mode

Question 96

An entry tram are comprised of how many members?

Answer 96

Usually 6 but not less than 4

Question 97

Do entry teams all need to be from the same company?

Answer 97

Not necessarily, based on physical capabilities and experience