Bookmark
Rehab Tips

Date last updated: Thursday, February 28, 15:21 PST


04/10/2013

Print Tip | EMail Tip to a friend |  |  |


Create high-pressure zone to remove smoke, gases


Tips

By Mark van der Feyst

The positive pressure fan will provide ventilation by pressurizing the inside of the structure and pushing smoke and hot gases out. Smoke likes to live in low-pressure zones and when a structure is made to be a high-pressure zone, the smoke will seek out low-pressure areas.

In order for it to work effectively, there needs to be an opening and an exit. The opening can be a door or a window with the exit being of equal size or larger to accommodate the volumes of smoke and hot gases exiting the structure. Having more than one opening or exit will only compromise the operation and effectiveness of the fan. The structure will not be able to become a high-pressure zone. In essence it becomes like a piece of Swiss cheese, full of holes. A common mistake is to introduce the fan once all windows have been taken out and all doors are open.








Back to previous page


 Most Popular
Pa. professor studying heart health of firefighters Cold injuries: Frostnip, frostbite and cold immersion foot Non-invasive Screening for CO and MET START Method Makes Triage Fast, Simple How to nurture a firefighter rehab culture
All Popular Articles 


FireRehab Communications
Skin's role in FF rehab; How to reduce overhaul risks | September 27, 2016 The missing link in FF rehab; 6 ways to improve your health | July 26, 2016
All Newsletters
Resources

USFA Emergency Incident Rehabilitation Manual IAFC: Fighting Heat Stress U.S. EPA Excessive Heat Events Guidebook (PDF) Agency for Toxic Substances Cyanide FAQ Assistance to Firefighters Grant AFG: DHS/FEMA Fire Act Grant
All Resources 

Press Releases
HeatSeeker Technology & Design Fire Introduces Rehabilitation Products FDNY Makes Largest First Responder Purchase of Masimo Rad-57 Pulse CO-Oximeters to Improve Survival of Firefighters and Victims of Carbon Monoxide Poisoning 343 Technologies and Hothead Technologies Announce Wireless Temperature Sensor for Firefighter Rehab
More Press Releases 

Sponsored By
This site is sponsored by Masimo, the manufacturer of Rad-57, the first non-invasive way of measuring CO in the blood. Request Information
Watch a video demo of the Rad-57™


Copyright 2017
Masimo  FireRescue1  About This Site  Privacy Policy 
Login          My profile 
Powered by: