TB 162, Metrorail Construction Flashcards
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?
200 feet
The greatest risk in tunnel construction is?
Compromised atmospheres
The fire department will respond to ? Portal entrances, during construction of the MRCTC project.
3
A contractor maintains a hardwired mining phone system during totaling operations. It is equipped with the phone located at the following locations?
On the tunnel boring machine,
at the cross passages,
at the portals
If the atmosphere in the tunnel is compromised, entry is limited to?
US and R certified members wearing rebreather’s
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.
10
30
For an EMS incident that occurred below grade,? Are required.
Full PPE
By law, to provide a means for escape for me has just non-breathable atmosphere, all personnel who enter a mining site must wear?
A one hour self rescue device
The direct fire attack inside the tunnel should only be justified if?
There is a possibility to save a life
Members entering a compromised atmosphere under the conditions listed with the 60 minute bottle for limited to ? minutes working time.
12 minute
Engineers pumping into fire department connections during construction jump rope a maximum of?
150 psi
The first unit on scene assignments his\her company to?
Lobby\systems control
The second arriving company establishes?
Staging
The agency in charge of an incident is?
The LAFD
The third company operates in the portal adjacent to the tunnel and is responsible for?
Technical support
Fire protection systems found in the portals include all the following?
Fire detection devices,
extinguishing systems,
emergency lighting
The tank in\tag out system used for identifying employees below grade is referred to as the brass board. The Brass board is located?
Adjacent to the entry portal
Self rescue were respirators are maintained and stored at?
Each portal of entry
The first alarm assignment is deployed to establish?
Base,
staging,
obtain initial observations
The first arriving U.S. and R certified company establishes?
TUNNEL
division
The responsibility for establishing rapid intervention is?
The back up entry team
Which of the following methods of communication is not permitted in the tunnel?
Department issued cell phone
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?
Constant air monitoring,
use of ventilation system
The third company of the first alarm assignment arriving at a tunnel construction incident establishes and is responsible for?
Technical support
The first unit on scene gives a radio size up, assumes the initial responsibility of incident commander, and assigns his/her company to?
Lobby/systems control
The second company of the first alarm assignment arriving Alta tunnel construction incident establishes?
Staging above round in proximity to the portal opening
Lobby/systems control is normally located?
In the contractors trailer
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?
EMS, injury, heart attack, electrocution
Physical extrication from equipment
Confined space rescue
Collapse or flooding with rescue
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?
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
Radio communication in the tunnel with LAFD 800 MHz radios will be?
In the direct mode
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.
At each portal or station box
At each cross passage
Every 1000 feet within the tunnel
All emergency operations will be discontinued and the tunnel evacuated should the tunnel atmosphere meet or exceed ? Lower explosive limit
20
The officer from the first arriving US&R certified company establishes ? In the portal, adjacent t the tunnel while the remainder of the company ?
Tunnel division
Prepares for tunnel operations
