TB 162, Metrorail Construction

Question 1

A 46 inch water supply systemprovides cooling for the tunnel boring machine and water for firefighting operations. The system is equipped with 2 1/2 inch outlets every?

Answer 1

200 feet

Question 2

The greatest risk in tunnel construction is?

Answer 2

Compromised atmospheres

Question 3

The fire department will respond to ? Portal entrances, during construction of the MRCTC project.

Answer 3

3

Question 4

A contractor maintains a hardwired mining phone system during totaling operations. It is equipped with the phone located at the following locations?

Answer 4

On the tunnel boring machine,
at the cross passages,
at the portals

Question 5

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

Answer 5

US and R certified members wearing rebreather’s

Question 6

Cal\OSHA requires that telling contractors provide rescue team personnel that meet specific training requirements if more then ? workers will be operating in the tunnel or shaft. LAFD has agreed to be the rescue team as we meet the requirement of having a rescue team on the site within? Minutes.

Answer 6

10

30

Question 7

For an EMS incident that occurred below grade,? Are required.

Answer 7

Full PPE

Question 8

By law, to provide a means for escape for me has just non-breathable atmosphere, all personnel who enter a mining site must wear?

Answer 8

A one hour self rescue device

Question 9

The direct fire attack inside the tunnel should only be justified if?

Answer 9

There is a possibility to save a life

Question 10

Members entering a compromised atmosphere under the conditions listed with the 60 minute bottle for limited to ? minutes working time.

Answer 10

12 minute

Question 11

Engineers pumping into fire department connections during construction jump rope a maximum of?

Answer 11

150 psi

Question 12

The first unit on scene assignments his\her company to?

Answer 12

Lobby\systems control

Question 13

The second arriving company establishes?

Answer 13

Staging

Question 14

The agency in charge of an incident is?

Answer 14

The LAFD

Question 15

The third company operates in the portal adjacent to the tunnel and is responsible for?

Answer 15

Technical support

Question 16

Fire protection systems found in the portals include all the following?

Answer 16

Fire detection devices,
extinguishing systems,
emergency lighting

Question 17

The tank in\tag out system used for identifying employees below grade is referred to as the brass board. The Brass board is located?

Answer 17

Adjacent to the entry portal

Question 18

Self rescue were respirators are maintained and stored at?

Answer 18

Each portal of entry

Question 19

The first alarm assignment is deployed to establish?

Answer 19

Base,
staging,
obtain initial observations

Question 20

The first arriving U.S. and R certified company establishes?

Answer 20

TUNNEL

division

Question 21

The responsibility for establishing rapid intervention is?

Answer 21

The back up entry team

Question 22

Which of the following methods of communication is not permitted in the tunnel?

Answer 22

Department issued cell phone

Question 23

Cal\OSHA has listed the metro regional connector transit Corredor project as potentially gassy due to the possibility of encountering methane gas. Hazard mitigation is been identified through?

Answer 23

Constant air monitoring,

use of ventilation system

Question 24

The third company of the first alarm assignment arriving at a tunnel construction incident establishes and is responsible for?

Answer 24

Technical support

Question 25

The first unit on scene gives a radio size up, assumes the initial responsibility of incident commander, and assigns his/her company to?

Answer 25

Lobby/systems control

Question 26

The second company of the first alarm assignment arriving Alta tunnel construction incident establishes?

Answer 26

Staging above round in proximity to the portal opening

Question 27

Lobby/systems control is normally located?

Answer 27

In the contractors trailer

Question 28

All of the following types of incidents within a non compromised atmosphere, members must wear an SCBA and a self rescue device ready for use?

Answer 28

EMS, injury, heart attack, electrocution Physical extrication from equipment Confined space rescue Collapse or flooding with rescue

Question 29

An SCBA and a self rescue respirator is required for entry into a known compromised atmosphere, however personnel are limited to initial observation or atmospheric testing when which of the following conditions are met?

Answer 29

A two member team is in sight of the tunnel or shaft opening A four member team, if they will be ou of sight of the tunnel or shaft opening A back up team is standing by Entry into a compromised atmosphere does not exceed a distance of 500 feet

Question 30

Radio communication in the tunnel with LAFD 800 MHz radios will be?

Answer 30

In the direct mode

Question 31

A contractor hardware communication system is installed within the tunnel provides a telephone headset designed to maintain communications within the tunnel and above grade located.

Answer 31

At each portal or station box At each cross passage Every 1000 feet within the tunnel

Question 32

All emergency operations will be discontinued and the tunnel evacuated should the tunnel atmosphere meet or exceed ? Lower explosive limit

Answer 32

20

Question 33

The officer from the first arriving US&R certified company establishes ? In the portal, adjacent t the tunnel while the remainder of the company ?

Answer 33

Tunnel division | Prepares for tunnel operations