6. Fire Attack (pt 2)

Question 1

What are the four scenarios that I will be in throttle mode instead of pressure?

Answer 1

1. Drafting
2. Relay / tandem pumping
3. Standpipe ops
4. Flowing the ladder

unless I am also pumping other handlines

Question 2

What is the relief pressure set at the keystone, generally speaking?

If the keystone receives pressure above this, what must be done?

Can this pressure setting be adjusted? How?

Answer 2

1. 150psi
2. close the intake
3. Yes, when not receiving water, take a Allen wrench and rotate the cylinder underneath the keystone (there are pressures on each step. Whatever is flush with cylinder is the pressure

Question 3

SRP hydrants are set at what PSI?

What needs to be done when using an SRP hydrant?

Answer 3

1. 150psi

2. Open the intake slowly so that the intake pressure does not exceed the 150psi