Firefighting Response to Areas Without Hydrants

Questions and Answers

Fixed Volume Method

Constant Volume Method

Constant Pressure Method (correct)

Variable Pressure Method

3" National Standard Threads

2 ½" National Standard Threads (correct)

5" Storz discharge

4" National Standard Threads

Drafting water from the portable tank

Forward engine pumping fire streams (correct)

Acting as a water relay point

Transporting water to the incident

1000 gallons Signup and view all the answers

Storing water for emergency use Signup and view all the answers

Drop the load into a portable tank Signup and view all the answers

5” diameter and 1000’ length Signup and view all the answers

Engines with 1000 gallon or greater water tanks Signup and view all the answers

From mutual aid tank drafted water Signup and view all the answers

Ensuring reserve capacity during tanker swap out Signup and view all the answers

Study Notes

TFD uses the "Constant Pressure Method" for relay pumping, as described in the IFSTA Pumping Apparatus Driver/Operator handbook.
The method involves 150 psi and 1000' of 5" hose per engine.

Tankers with pumps can pump to TFD apparatus using a 3" line.
TFD 3" lines use 2 ½" National Standard Threads, compatible with mutual aid 2 ½" or 3" lines.
Some tankers may have a 5" Storz discharge.
When taking water, it is recommended to use two engines:
- First engine: forward engine pumping fire streams.
- Second engine: takes water from the tanker and forwards it to the forward engine, keeping its tank full and only using it as needed.
Mutual aid departments' engines with 1000 gallon (or greater) water tanks are preferred as the second engine.

Tankers without pumps drop their load into a portable tank.
An engine then drafts from the portable tank.
TFD engines do not carry hard suction hose, so water is received in one of two ways:
- From a mutual aid engine drafting from a portable tank.
- Allowing a mutual aid engine to pump the incident, drafting directly from their portable tank.