hydrant connections & line pressure Flashcards
When second to arrive on the first alarm, can the 10 foot hard suction be used?
Yes. When other then first to arrive on the first alarm, the 10 foot small hydrant connection, 35 foot soft hydrant connection or the 10 foot hard suction shall be used
When first to arrive on the first alarm, can the 10 foot hard suction be used?
No. When first to arrive on the first alarm, the 10 foot small hydrant connection with a 35 foot soft charger connection maybe used.
When arriving at second or greater alarms can the 10 foot hard suction be used?
Yes. When arriving at second or greater alarms the 10 foot hard suction connection should be used if available
What connection do you use when drafting operations are indicated?
When drafting operations are indicated, the 10 foot hard suction connection must be used
When hydrants are unlawfully blocked at fires or emergency operations, a length of____, where practical, may be used to connect a pumper to a hydrant if the _____hydrant connection will not reach
3 1/2 inch hose, 35 foot soft hydrant connection
When in-line pumping operations are implemented, 3 1/2 inch hose shall be the initial supply line
One and three-quarter inch hose with a 15/16 inch nozzle equals ___psi at nozzle plus ___ PSi per length friction loss
50, 20
2 1/2 inch hose with 1 1/8 inch nozzle equals ___psi at nozzle plus ___PSI per length friction loss
40, 5
Five psi for each floor above grade must also be calculated for both