That doc could use a little more in the way of discussion about controlling fire flow. It briefly mentions control of the door (though I assume that talking about short term "don't get yourself cooked" control). It also talks a lot about chocking the door. It doesn't talk much about all the times you would want to avoid chocking the door.
We don't chock doors by default. We secure them so they remain openable, but we don't chock them open unless we have another reason for leaving them open. Controlling airflow is critical in firefighting (something we in the US are just starting to come around to with the research being done by NIST/UL, etc). Propping a door open means you risk taking a fire that is burning rich (and therefore 'cool') and pushing it closer to an ideal stoichiometric ratio. We're actually in the process of putting 'door curtains' on the rigs so that we can chock the door, but drop a canvas curtain over the opening to block airflow.
(I suspect you're very aware of this, as the Governors Island tests were critical to the recent NIST/UL studies, just wanted to add some more color to your comment and the posted document)
That door curtain is a fantastic idea. When my company would go to Governor's Island I did dropdown curtains from the floor above.
I've actually been light duty for the past 2 years so for all I know drones are putting out fires now. But about the time I went out they were updating all the ventilation procedures bigtime.
We don't chock doors by default. We secure them so they remain openable, but we don't chock them open unless we have another reason for leaving them open. Controlling airflow is critical in firefighting (something we in the US are just starting to come around to with the research being done by NIST/UL, etc). Propping a door open means you risk taking a fire that is burning rich (and therefore 'cool') and pushing it closer to an ideal stoichiometric ratio. We're actually in the process of putting 'door curtains' on the rigs so that we can chock the door, but drop a canvas curtain over the opening to block airflow.
(I suspect you're very aware of this, as the Governors Island tests were critical to the recent NIST/UL studies, just wanted to add some more color to your comment and the posted document)