Chapter 13 Flashcards
advisable method of addressing safety hazards such as blind curves and intersections on a water shuttle route
Have police officers or fire police control traffic at these points.
Successful water shuttle operations are BEST achieved by
using efficient filling and dumping operations
The Insurance Services Office (ISO) formula uses _____ of a tender’s total tank capacity to account for water lost or undischarged and remaining in the tank after the dump valve is closed.
90 percent
most hazardous tasks for the driver/operator during water shuttle operations
Driving the travel route
using large diameter hose during a fill operation
It may actually provide little advantage
A water shuttle operation must be integrated into the Incident Command structure, which should adhere to
the National Incident Management System
How is the gpm (L/min) data for a water tender MOST likely to be used during preplanning
To determine how many tenders are required to provide a particular flow for a given target hazard
Which of the following statements about shutting down the dump site is MOST accurate?
Portable water tanks should be drained of any sediment, debris, or nonpotable water and placed back on the apparatus
On water tenders, remote controlled vents are preferable to manually operated vents because
manually operated vents may require the driver/operator to climb on top of the tank
In accordance with NFPA® 1901, water tenders must be designed to be filled at a rate of at least
1,000 gpm
Commonly, water tenders have at least _____ 2½ inch (65 mm) direct tank fill connection(s) or one LDH direct tank fill connection on the rear of the apparatus.
two
exemplifies a problem that steep grades can cause during a water shuttle operation
Uphill grades slow the operation down, and downhill grades require constant attention to control the vehicle
may increase the options available for using static water supply at many incidents
Portable pumps
After the onboard water tank is full, what is the next step in the fill operation?
The fill site personnel should slowly close the valve(s) on the gate or manifold.
At the fill site, _____ firefighter(s) should be assigned to maneuver and connect each fill line that is laid out
1
explains why departments should predetermine the most advantageous sites and routes for water shuttle operations during preincident planning
The IC or Water Supply Group Supervisor will be able to establish a reliable water supply more quickly during an incident.
During large-scale incidents, it may be necessary to establish two or more water shuttle operations under the immediate coordination of a (an)
Water Supply Branch Manager.
What is the primary advantage of using a nurse tanker (tender) during dump site operations
Capacity of its tank
dump site location to allow continual forward movement?
A large, nearby parking lot
identifies when an overhead pipe should be used during water tender top-fill procedures
When there is no other way of filling through the top opening
maintains certain criteria for determining the proper specifications for water tender apparatus
Each individual jurisdiction
What is the goal of a portable multi-tank operation
Keep the tank from which the attack pumper is drafting full at all times
What should the dump site pumper do to ensure that prime is not lost when other discharges are shut down
Flow a small waste line back into the tank
an advantage provided by vacuum tenders
A vacuum tender can self-fill from a static water source at a rate of up to 2,000 gpm
During a jet siphon operation, the pump’s prime will be lost if:
the apparatus tank is allowed to run dry
One method of calculating a flow rate for a specific tender relies on actual field tests conducted under realistic water shuttle conditions and measures the data by
dividing the amount of water the tender dumped during a trial run by the time the round trip took
why is it advantageous to have roadways closed to nonemergency vehicles during water shuttle operations?
To lessen traffic congestion and reduce the possibility of collision
Any portable tank, regardless of type, should be set up on a surface that is as level as possible and have a capacity at least _____ larger than the water tank on the apparatus that will supply it.
500 gallons
dumping method is generally considered to be the simplest, quickest method to ensure a constant water supply for fire attack operations
Portable water tank operations
what factor is built into the “travel time” formula
Acceleration and deceleration times as the vehicle approaches the fill and dump sites
describes a pumper/tender apparatus?
Tender featuring pumps of 750 gpm (3 000 L/min) or greater
1901 requires that water be capable of being dumped from the:
left, right, and rear of the apparatus
What should the Water Supply Group Supervisor do if water demand begins to outpace supply
Summon additional tenders
reason all responding tenders should fill their tanks before returning to quarters at the conclusion of an incident
It returns the apparatus to a “ready” status after an incident
must be true of anyone assigned to the position of Water Supply Group Supervisor?
person must have considerable experience in pumper, water supply, and shuttle operations.
efficient way to transfer water between portable tanks is through the use of a
jet siphon
Why should the tender driver/operator remain in the apparatus cab at the fill site?
To ensure peak efficiency in apparatus movement
With the exception of operations that feature a vacuum tanker or the use of a hydrant, most water shuttles require at least _____ pumpers for water supply
two
The most common style of portable tank:
folds and is mounted and removed from the apparatus, as with a ground ladder
During dump site operations, the _____ must have an opening of sufficient size to allow free movement of water at the bottom of the tank and movement of air at the top during rapid filling or unloading.
tank baffles
At the fill site, how should the stopping point for the water tender driver/operator be denoted once the exact fill spot has been determined?
With a traffic cone or similar marker
Ideally, the fill site pumper should be positioned so as to allow a view of both
the water source and the water tender to be filled
way to control flow from the fill site pumper
By using the discharge gates on the pumping apparatus
The goal of the fill site
oading tenders as safely and efficiently as possible.
generally increases the safety of a gravity dump
a remote dump valve
During portable water tank operations, once a tank is positioned, a _____ deploys a hard intake hose with a low-level strainer into the tank
dump site pumper
Direct pumping operations are typically accomplished by having the attack pumper lay out a supply line that is equipped with a(an) _____ in an area accessible to tenders.
gated or clappered Siamese
