NOZZLE TESTS PROVE FIREGROUND REALITIES, PART 2

摘要

The tests confirmed and demonstrated the following: 1. Airflow volumes introduced into the fire area by solid-bore and straight streams from combination nozzles are very similar. 2. Air moved by solid-bore nozzles and straight streams from combination nozzles do not disturb the fire environment and did not create untenable conditions for firefighters under the three ventilation conditions tested here. 3. Fog nozzles move so much air volume into the fire area that even a large ventilation opening cannot relieve the overpressure created, thus resulting in a ricochet of air from the fire area back to the attack team. Much has been written regarding the use of fog and solid-bore nozzles. The tests described here for the first time provide firefighters with an easy, repeatable, and safe method for comparing the effects of solid and fog streams on an interior fire attack.