Exam (elaborations)
JATC 1A: Electrical Training and Skill Development
JATC 1A: Electrical Training and Skill Development
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JATC 1A: Electrical Training and Skill DevelopmentAbandon - correct answer ✔✔ Means leave equipment where it is and get out of the structure
immediately.
Withdraw - correct answer ✔✔ Means grab the equipment and exit the structure to reform strategy.
Abandon is a term used for emergency exit whereas withdraw is usually a change in strategy causing the
exit.
-Wye - correct answer ✔✔ is an appliance that give the ability to connect 2 1 ¾ hoses to a 2 1/2. It is
commonly used for the drop the wye evolution to have hose reach an upper floor without having to lay
hose all the way up the stairs and along the building. It is also can be used for the valve to turn flow on
or off.
-Adapter hose - correct answer ✔✔ is used to connect the same size hose that have mismatched
threading or lack of thread. This encompasses double male or double female fittings as well as threaded
to storz.
-Siamese valve - correct answer ✔✔ have 2 inlets and one output. We mostly carry a Siamese with two 1
¾ to combine into a 2 ½ output. These can help overcome friction loss when LDH is not available or
practical.
-Gate valve - correct answer ✔✔ controls flow between sections of hose or on a hydrant (2 ½
connection) . It is used on hydrants to allow for another connection to be made without having to shut
down the hydrant. It can also be used to variably reduce flow.
-Appliance - correct answer ✔✔ Any piece of hardware used in conjunction with fire hose to control the
flow or change the pathway is an ________. Some frequently used appliances include valves, fittings,
and intake strainers.
-Clapper valve - correct answer ✔✔ are one way valves used to prevent backflow. These are common in
appliances with multiple intakes (Siamese).
, -Reducer - correct answer ✔✔ connects a smaller hose to a larger hose. This is useful in cases where you
need higher pressure farther from the pump. By dropping the width of the hose it in turn adds pressure
to the water flow.
-Ball valve - correct answer ✔✔ can quickly open and close while still minimizing friction loss when in the
open position.
Backdraft - correct answer ✔✔ Heat and product of combustion accumulated inside a compartment
depleting availability oxygen, then oxygen is reintroduced into the compartment causing rapid
combustion.
Flashover - correct answer ✔✔ rapid transition from the growth stage to the fully developed stage
Smoke Explosion - correct answer ✔✔ Form of fire gas ignition: the ignition of accumulated flammable
products of combustion and air that are within their familable range.
Rollover - correct answer ✔✔ A condition where the unburned fire gases that have accumulated at the
top of a compartment ignite and flames propagate through the hot-gas layer or across the ceiling.
Dead loads - correct answer ✔✔ weight of the structure, structural members, building components and
any other features permanently attached to the building that is constant and immobile
Live Loads - correct answer ✔✔ items within a building that are movable but are included as a
permanent part of the structure; merchandise, stock, furnishings, occupants, firefighter, and the water
used for the fire suppression are examples of the live loads (2) force placed upon a structure by the
addition of people, objects or weather.
Impact loads - correct answer ✔✔ Are loads which are delivered in a short time. A load which the
structure might resist, if delivered as a static load over time, may cause collapse if delivered as an impact
load
Describe the special considerations to firefighting that come with construction using steel beams and
members - correct answer ✔✔ The main considerations firefighters need to have when working in a
building with known steel beams as its support members is, once steel is heated to 1,000 degrees it will
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