Utility Emergencies Flashcards
A device which provides transition between underground cable to overhead lines or conductors
Pothead
Electric service taken at less than 2000 volts. Most residential and business customers receive electricity from secondary distribution lines
Secondary
The average exposure to a contaminant or condition (such as noise) to which workers may be exposed without adverse effect over a period such as in an 8-hour day or 40-hour week
Time Weighted Average
Utility Markings Red
electric
cable
conduit
lightning cable
Utility Markings Yellow
gas
oil
steam
petroleum
gaseous materials
Utility Markings Orange
Communications
Alarm
Signal lines
Cable
Conduit
Blue
Potable water
Purple
Reclaimed water
Irrigation
Slurry lines
Green
Sewer & drain lines
Pink
Temporary survey markings
White
Proposed excavations
The flammable range for natural gas is..?
Between 5% & 15%
The expansion rate of liquified natural gas is..?
600:1
The general rule for apparatus positioning is….?
No closer than 100’ for the first arriving unit & a minimum of 300” for all other incoming units
If the break on the gas line is reported to be over ___ ____in diameter, the incident should be ______ ______ _____
2 inches, upgraded to a hazmat response
For instances where the leak cannot be controlled, the OIC should…?
Confirm utility company is en route, establish hot/cold zones & isolate the area.
The DOT ERG suggests an evacuation distance of…?
330 feet
On inside gas leaks, the tasks that should be completed by units on scene are?
Citizen evacuation
Atmospheric monitoring
Exposure protection
Hazard mitigation
Ventilation
Any person who enters a structure with CO readings above 35 ppm shall…?
Have full turnout gear, including SCBA donned
Actions for downed wires on vehicles?
Keep personnel 30 feet away from vehicle
Keep bystanders 1.5 distance between poles
Keep any victims in the vehicle or have them hop & shuffle away from the vehicle
What are the two numbers on the electric poles?
Top: Map grid where pole is located
Bottom: Specific pole number within grid
Areas between floors that are used to house mechanical equipment
Interstitial spaces
Rising water in basement actions
Assess electrical hazard
Locate floor drain & remove debris
Remove toilet bowl to aid with drainage
Clearly mark & announce drain to prevent person from getting body parts sucked into drain
