TN 106.7- Catching a Hydrant Part 2

Study Notes

In a static hose lay, the apparatus arrives at the fire scene and supply hose is dragged by a firefighter from the apparatus towards the hydrant.
This method is commonly used by TFS crews due to the hydrant spacing in Toronto.
The method has its disadvantages, such as distances from the hydrant, especially when flow rates increase.

Flushing the hydrant confirms the hydrant is operational before committing equipment to it.
Flushing removes sediment and debris prior to connecting hose lines and prevents them from entering the pump and attack hose lines.
Flushing is done in a controlled method using a gate valve, in case of a hydrant failure.

Remove the 65mm hydrant cap furthest from the fire scene and attach an open 65mm gate valve with 100mm Storz adapter.
Fully open the hydrant, with your body positioned away from hydrant outlets, and observe the water stream until it becomes clean and clear.
Shut down the hydrant until water stops flowing and close the gate valve.

TFS uses color-coded rings on 65mm hydrant ports to identify hydrant flow capabilities.
Remove remaining hydrant caps and connect a second 65mm gate valve with 100mm Storz adapter to the 65mm hydrant port and ensure it is closed.
Connect the 100mm hose to the hydrant Storz connection, and signal or radio the pump operator to confirm the hydrant has been secured.

Use all available ports on the hydrant to maximize its water supply potential.
At incidents with more than two hose lines, use a minimum of two 100mm supply lines attached to the pumper from the hydrant.
When residual intake pressures approach 140 kPa, attach another 100mm supply line to the pumper from the hydrant.
Note: At no time should two apparatus be connected to the same hydrant. Apparatus shall secure their own water supply, independent from others. Apparatus should attempt to use separate water mains when possible.

Ensure the pump operator no longer needs the hydrant and has closed the intake valve.
Close the hydrant operating stem (clockwise) and release residual pressure.
Remove all hose lines and appliances, and ensure the hydrant has no more water coming from it.
Report the location of the hydrant to TFS Communications for hydrant servicing.