FIRE APPARATUS
DRIVER/OPERATOR - MWS MODULE
5 QUESTIONS AND ANSWERS 100%
CORRECT
Venturi Effect - ANSWER-When fluid is forced under pressure through a restricted
orifice, there is a decrease in the pressure exerted against the side of the
constriction increase in the velocity of the fluid. Because the surrounding air is under
greater pressure, it rushes into the area of lower pressure.
Jet Assisted Dumps Disadvantages - ANSWER-1. The apparatus must be equipped
with a fire pump
2. The fire pump must be engaged before dumping the water from the tank.
3. If the pump is not operating, water will be discharged at a considerably lower rate.
4. They increase the cost of purchasing the apparatus.
Knowledge Check #4
IFSTA recommends that regardless of the water source, an MWS apparatus at all fill
site operations be filled by: - ANSWER-A. Another MWS apparatus
B. A pumping apparatus (Correct Answer)
C. An ARFF apparatus
D. A swimming pool fill truck
Knowledge Check #5
When you arrive at the fill site, you should be instructed to pull the MWS apparatus: -
ANSWER-A. Adjacent to the cone at the point where the driver's side door window is
opposite the cone - (Correct Answer)
B. Adjacent to the cone at the point where the passenger's side door window is
opposite the cone
C. Behind the cone at the point where the cone is centered just in front of the MWS
apparatus
D. In front of the cone at the point where the cone is centered just behind the MWS
apparatus
, Knowledge Check #6
If some MWS apparatuses being filled have MDH tank fill intakes and others have
LDH tank fill intakes, the best hose lay for the fill site operation is: - ANSWER-A. Two
MDH supply lines with gate valves
B. Two LDH supply lines with gate valves and a manifold
C. One LDH and two MDH supply lines - (Correct Answer)
D. One LDH supply line with a gate valve
Knowledge Check #7
Identify THREE TRUE statements about using top fill methods for water shuttle
operations. - ANSWER-A. Top filling may be accomplished using either fixed or
portable filling equipment - (Correct Answer)
B. If fixed equipment is used for top filling, the fill site is limited to that location -
(Correct Answer)
C. It's quicker to get the opening positioned directly beneath the fill spout than to
connect hoses
D. Filling an MWS apparatus through the top with an open hose butt is NOT
recommended - (Correct Answer)
E. Filling an MWS apparatus through the top with a portable fill device is a safe
option
F. It is more efficient to top fill than for a pumper to simply draft and pump to the
MWS apparatus.
Knowledge Check #8
Place the steps for filling an MWS apparatus at a fill site in the correct order -
ANSWER-1. Ensure that make and break personnel are safely off to the side of the
fill site
2. Position the MWS apparatus until the driver's door is parallel to the stop marker
3. Come to a complete stop and remain in the cab of your apparatus
4. The make and break personnel connect the fill hose(s) to the direct tank fill
intake(s)
5. The intake valve(s) are opened and the gate vale(s) or manifold on the fill hoses
are opened
DRIVER/OPERATOR - MWS MODULE
5 QUESTIONS AND ANSWERS 100%
CORRECT
Venturi Effect - ANSWER-When fluid is forced under pressure through a restricted
orifice, there is a decrease in the pressure exerted against the side of the
constriction increase in the velocity of the fluid. Because the surrounding air is under
greater pressure, it rushes into the area of lower pressure.
Jet Assisted Dumps Disadvantages - ANSWER-1. The apparatus must be equipped
with a fire pump
2. The fire pump must be engaged before dumping the water from the tank.
3. If the pump is not operating, water will be discharged at a considerably lower rate.
4. They increase the cost of purchasing the apparatus.
Knowledge Check #4
IFSTA recommends that regardless of the water source, an MWS apparatus at all fill
site operations be filled by: - ANSWER-A. Another MWS apparatus
B. A pumping apparatus (Correct Answer)
C. An ARFF apparatus
D. A swimming pool fill truck
Knowledge Check #5
When you arrive at the fill site, you should be instructed to pull the MWS apparatus: -
ANSWER-A. Adjacent to the cone at the point where the driver's side door window is
opposite the cone - (Correct Answer)
B. Adjacent to the cone at the point where the passenger's side door window is
opposite the cone
C. Behind the cone at the point where the cone is centered just in front of the MWS
apparatus
D. In front of the cone at the point where the cone is centered just behind the MWS
apparatus
, Knowledge Check #6
If some MWS apparatuses being filled have MDH tank fill intakes and others have
LDH tank fill intakes, the best hose lay for the fill site operation is: - ANSWER-A. Two
MDH supply lines with gate valves
B. Two LDH supply lines with gate valves and a manifold
C. One LDH and two MDH supply lines - (Correct Answer)
D. One LDH supply line with a gate valve
Knowledge Check #7
Identify THREE TRUE statements about using top fill methods for water shuttle
operations. - ANSWER-A. Top filling may be accomplished using either fixed or
portable filling equipment - (Correct Answer)
B. If fixed equipment is used for top filling, the fill site is limited to that location -
(Correct Answer)
C. It's quicker to get the opening positioned directly beneath the fill spout than to
connect hoses
D. Filling an MWS apparatus through the top with an open hose butt is NOT
recommended - (Correct Answer)
E. Filling an MWS apparatus through the top with a portable fill device is a safe
option
F. It is more efficient to top fill than for a pumper to simply draft and pump to the
MWS apparatus.
Knowledge Check #8
Place the steps for filling an MWS apparatus at a fill site in the correct order -
ANSWER-1. Ensure that make and break personnel are safely off to the side of the
fill site
2. Position the MWS apparatus until the driver's door is parallel to the stop marker
3. Come to a complete stop and remain in the cab of your apparatus
4. The make and break personnel connect the fill hose(s) to the direct tank fill
intake(s)
5. The intake valve(s) are opened and the gate vale(s) or manifold on the fill hoses
are opened
