Ch.12 Flashcards
Attack pumpers equipped with an adjustable intake relief valve should be set between _____ and ____ psi to establish a stable operating condition ?
50 and 75 psi
Drivers should refer to ______ for further information regarding the placement of relief devices?
NFPA 1962
Driver /operators should not attemp to correct minor fluctuations as long as the intake pressure does not drop below _____ psi?
20 psi
Using two or more pumpers to move water over a long distance by operating them in series ?
Relay operation (also known as relay pumping)
Process of releasing a liquid or gas under pressure?
Bleed
Centrifugal pumps are rated to pump their maximum volume capacity at ____ psi at draft?
150 psi
Pulping apparatus located at the fire scene that receives water from the relay and is responsible for supplying the attack lines and appliances required for fire suppression ?
Fire attack pumper
Hose tenders can carry a _____ or more of LDH ?
mile
Basically the need for _______________ is determined by the amount of water required at an incident and the distance between the incident scene and the water source ?
Relay pumping
Increasing flow during a relay operation may be accomplished by placing additional ________ in the system?
Pumpers
A relay pumping operation begins with the _________ capacity pumper working from the water source ?
Largest
All personnel involved in the relay operation must understand that the overall capacity of the system is determined by the ___________ and the ____________ diameter of hose used in the relay?
Smallest pump
Smallest diameter hose
Apparatus equipped with pressure governors should be set in the ________ mode when acting as the attack pumper and in _____ mode while working as a relay pumper?
Pressure mode
Rpm mode
This method consists of deploying portable folding drop tanks at each intake for pumpers in the relay operation?
Open relay method
