Confined Space and Structural Collapse Flashcards
___ hazards are often the most crucial factor in confined space capability in the SFD
Atmospheric
A marking indicating that the building has been searched and victims have been found will be shaped like
X
A PERMIT REQUIRED confined space is large enough and so configured that an employee can bodily enter and perform…Which is not a listed “permit required” condition?
Contains any other recognized serious safety or health hazard
A victim harness is required whenever the PT would be lifted with ropes and should be sent in with every packaging device. The only exception to this are:
If the medical condition of the victim or environment in the space poses a greater risk to survival than the risk of being dropped in thee removal process
All entrants into confined spaces are required to wear?
Class 3 harness and a positive connection to the outside
An atmosphere that causes threat to life and would cause irreversible health affects or would impair an individual:
IDLH
At a minimum all responders to a structural collapse should have a minimum PPE:
Steel toed boots
also: helmet, gloves, and eye pro
Ata structural collapse, the majority of SFD members are expected to perform at the ____ level as defined in NFPA 1670
Operations
At which level does a gas monitor begin to measure the hazard from airborne combustible dust?
none, gas monitors do not measure combustible dust
If you can’t see more than 5’ the dust is combustible
Choose the three levels of confined space capability in the SFD?
Awareness
Operations
Technician
Concrete is weakest against compressive forces
False
Weakest against TENSION
Confined spaces are defined as any space that meets all three of the following criteria: large enough for a worker to enter, has limited means of access…
All of the above
A permit, authorization from the property owner, a visible patient
Corners of cribbing should overlap by?
4 inches
FDs are exempt from WAC 296-809, which governs general industry b/c our safety standards are defined by WAC 296-305:
False
It is acceptable for rescuers to enter a confined space with only a belay line if they can enter the space safely by using stairs or ladders, etc?
False
Local markings indicating the location of victims will be shaped in a circle with a “V” inside. Ehat is the indication of a confirmed deceased victim?
1 horizontal line through the middle of the V
Marking a building consisting of a box with an “X” drawn inside indicates:
Structure is not safe for rescue operations and may be subject to sudden collapse
Members trained to Tech Level in structural collapse are at?
Station 14
Most survivors are rescued in what time frame?
the hours immediately following the event
O2 deficient atmosphere is below
19.5%
Purpose of confined space permit
Explain the hazards in the space and how they will be controlled prior to entry
Relative weight of a gas vapor in relation to ambient air known as:
Vapor density
The average concentration that must not be exceeded during 8HR work shift or a 40 hour week is?
TWA (Time weighted average)
The design load for 4x4 cribbing in a 2 member by 2 member layout is?
24K pounds
6K pounds per cross section
The force that tend to stretch objects is?
Tension
Shear - opposite forces moving across eachother
Torsion - spinning
Bending - two forces moving around a center force moving in opposite direction
Compression - forces moving towards eachother
The height of a crib box should not be more than?
3x height
The most widely used PT litter; it provides a great deal of protection for patients and is very stable and user-friendly platform
Ferno/Basket Stretcher (Litter)
Using airbags, how many can be stacked?
2
What are the disadvantages of a gas fan in a confined space environment?
They are large, heavy, and noisy
They produce exhaust gases, including CO
They produce a potential ignition source for explosive atmospheres
What is the most time consuming portion of incident
PT packaging
What is the typical weight of concrete when used as building material?
150 lbs/ft^3
What material is strong in tension, compression, and shear?
Steel
What type of collapse typically has the largest void space
Lean-to
When a rope has been used to lift, move, or stabilize a heavy load, it shall not be used for life safety purposes until:
It has been inspected by a member of R1
When can a member assigned to a lockout tagout leave their post?
When both the rescue group sup and rescue group safety confirms that all members are out of the haz zone
When stacking air bags, the total lift capacity that of?
the smallest bag
When used for shoring, wood tends to fail suddenly and w/o warning
False
When using air bags, how many can be stacked to achieve greater lift?
2
When using an air monitor to sample a space, you should?
Sample the entire space while considering the delay times associated with the machine (1 second per inch of hose)
Whenever a victim is packaged in an environment that requires them to wear respiratory protection such as RAK or SCBA, it is vital that they be:
Closely monitored and not be left unattended
Who is responsible to make sure all entry conditions are met, the required equipment is on hand and operable, and that all pre-entry testing has been completed satisfactorily?
Entry Supervisor
Which type of buildings are more prone to sudden collapse
Post-tensioned and precast concrete structure
