TB 35 Overhaul Procedures Flashcards
___ are currently the best lines of defense against any dangerous form of gases, vapors, and particulates.
Time and shielding
The environment directly following a fire incident should be considered ____ and treated as a hazardous environment.
immediately dangerous to life and health (IDLH)
Studies have shown that ____ greatly reduce the levels of exposure to a hazardous environment.
time and proper ventilation
It is important to remember that although ___ is a main contributor to an IDLH atmosphere, a CO measurement alone is not an accurate indication as to whether or not other harmful chemicals are present.
carbon monoxide (CO)
While mechanical ventilation assists with improving the environment following a knockdown, ____ has a more significant effect on improving the atmosphere and creating a safer environment.
time
After all visible smoke has been ventilated from the building, consideration should be given to shutting down blowers and allowing the ____ for a considerable amount of time prior to fire personnel reentering the occupancy to conduct overhaul.
particulate matter to settle
___ should be employed to determine the proper level of Personal Protective Equipment (PPE) needed and to complete any necessary post-incident personnel exposure reports.
Gas meters
Firefighting gear provides protection from products of combustion in two forms:
Respiratory protection (SCBA) Skin Absorption (Turn-outs)
NFPA specifically states, “The use of ____ by firefighters shall always be assumed to be in an atmosphere immediately dangerous to life or health (IDLH) because there is no way to predetermine those dangerous conditions, concentrations of toxic materials, or percentages of oxygen in air that exist in a fire environment, during initial overhaul (salvage) operations, or under other immediate emergency conditions involving spills or releases of chemicals or other toxic materials” (NFPA 1404-4).
self-contained breathing apparatus (SCBA)
The next level of shielding is through the use of PPE. Many toxins present themselves in the form of ____.
gases and vapors
Although the firefighting hood does not have a vapor barrier, it should be worn to ____from these toxins and vapors. Additional exposure can be eliminated or reduced by proper maintenance of turnouts.
minimize exposure
Areas that are deemed to be unsafe for personnel to access shall be completely restricted – with BOTH fire-line tape, and ____ to prevent any movement in and around the affected area(s).
red and white striped barricade tape
The_____ is responsible for documenting all hazards/risks, the area(s) involved, and any mitigation measures using an ICS 215A Incident Action Plan Safety Analysis. During the overhaul briefing, the IC shall review the ICS 215A with all officers assigned to participate in the overhaul.
IC
All officers shall be responsible to orientate their respective personnel to all ___, regardless of the area of responsibility they may be assigned to work.
identified hazards
Relief companies and/or additional resources needed to conduct the overhaul will be requested at the discretion of the ___.
IC.
It is becoming more common for Arson to conduct investigations during ____ for obvious reasons, so fires occurring during the night may require the IC to establish an extended fire watch rotation with Metro Fire Communications (MFC).
daytime hours
Complete Overhaul – Traditional methods employed to meet the objectives of overhaul as outlined in Section II of this Training Bulletin while considering factors such as ______.
time, shielding and spoliation
Complete Overhaul – Appropriate PPEs range from a ___ – with donned SCBA face piece – to turnout pants, brush jacket, helmet, gloves, eye protection and an appropriate disposable filtered mask.
full turnout ensemble
Complete Overhaul – Minimal PPE may be considered when the occupancy has been well ventilated for a minimum of ____. Gas meters shall be utilized and put in place to monitor the atmosphere levels throughout the occupancy and for the duration of the overhaul.
ONE HOUR
Wet Overhaul – When the IC determines ___ exists, companies will meet the overhaul objectives by applying sufficient foam to the contents and all areas of the involved structure, paying particular attention to difficult to reach areas and points of the occupancy where structural members overlap or cross one another.
no salvageable content
Fire Watch – Companies will ___ the structure with full PPE to identify and address any possible flare ups or hot spots while being mindful to preserve the scene, as much as possible.
re-enter
When a complete overhaul is performed, overhaul piles shall be established in a location that will minimize any inconvenience to the public, and at a minimum of ___ away from any part of a structure.
10 feet
Unfortunately, firefighters are ____ more likely to be diagnosed with cancer than the general population
14 percent
cancer accounts for roughly ____ of all line-of-duty firefighter deaths.
60 percent
