Introduction to class A foams and compressed air foam systems for the structural fire service

by John Liebson

Publisher: International Society of Fire Service Instructors

Written in English
Published: Pages: 54 Downloads: 850
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  • Fire extinguishing agents
The Physical Object
FormatUnknown Binding
Number of Pages54
ID Numbers
Open LibraryOL11472248M
ISBN 100929662083
ISBN 109780929662084

The slide-in, modular compressed air foam unit is designed and constructed to simultaneously discharge water, aspirated foam, foam solution or compressed air foam, delivering GPM of water at PSIg ( L/min. @ 7 bar) and 80 CFM of air at PSIg ( m3/min @ 7 bar). The DS also provides compressed air for pneumatic tools. maintenance of low-, medium-, and high-expansion and, compressed air and self-expanding foam systems for fire protection. Statement of Problem and Substantiation for Public Input. Self-Expanding Foam System is a different fire protection arrangement than prescribed in the current standard. Submitter Information Verification. Submitter Full Name. 2. Design and method Compressed air foam system A compressed air foam system (CAFS) is a system used in firefighting to deliver fire retardant foam to extinguish a fire or protect unburned areas [6,7]. A compressed air foam system is defined as a standard water pumping system that has an * Corresponding by: 3. CHEMGUARD Class A foams cling to surfaces such as charred wood with minimal run off, enhancing fire suppression and reducing water usage. CHEMGUARD Class A concentrates are effective in fighting many deep-seated Class A fires, such as paper, tires, wooden residences and structures, and wildland. They are suitable for ground and air attack.

Displaying compressed air foam PowerPoint Presentations Types of Concentrates (Water Additives) - Fire Research PPT Presentation Summary: Compressed Air Foam Systems (CAFS) Compressed Air Foam System CAFS Components Complete Systems Fire pump manufacturers offer full . The paper describes a newly-developed compressed-air foam (CAF) system, based on an overhead fixed-pipe installation, and presents results showing its fire suppression performance. CANADIAN SAFETY EQUIPMENT is the premier source for Fire Fighting equipment including Breathing Apparatus, Turnout Gear, Fall Protection, Gas Detection, Auto Extrication, Hazmat Decon, Compressed Air Foam systems and Thermal Imaging Cameras as well as a complete line of Confined Space Entry/Rescue equipment. Compact Compressed Air Foam Systems Compact CAFS units are produced in many configurations with a wide range of performance. Auxiliary engines or power take-off's (PTO) on fire trucks power some units; cylinders of compressed gas power others.

Fire Solutions offers an Aspirated Nozzle Foam System. The three main methods for mechanically generated foams are: a Compressed Air Foam System (CAFS) such as our Foam Tote series ; aspiration of foam solution through a nozzle, and aerial drops from fixed wing and rotor wing aircraft. Class A Foams. When Class A foam application and compressed air foam systems (CAFS) are discussed, NFPA Guide for the Use of Class A Foams in Manual Structural Firefighting is an indispensable resource. The application of Class A foams normally indicates an additive or agent concentrate is mixed with water at – : Greg Jakubowski. uses low-expansion foams to blanket the fuel spill. High-expansion foam suppresses the fire by using more air and creating a large volume of foam to protect the hangar. This volume of foam will extinguish a fire by flooding the room and displacing the fuel vapor, heat and smoke. High-expansion foam systems require less water volume and pres-File Size: KB. CLASS A PLUS foam concentrate is designed for fire suppression use on Class A fuel fires including wood, paper, coal, and rubber fires. Although designed for Class A fires, the foam solution may be effective on some, contained Class B flammable liquid fires in emergency response situations when applied by portable medium- or high-expansion devices.

Introduction to class A foams and compressed air foam systems for the structural fire service by John Liebson Download PDF EPUB FB2

Class A foam concentrate: CAF systems use Class A foams, suitable for use on Class A fires of ordinary combustibles, such as wood, paper, rubber and other common materials.

In structural firefighting, Class A foams can be used for initial attack, overhaul and exposure protection. They. The intent of this site is to assist those that seek information regarding compressed air foam systems. I have been blessed over the last six years to have traveled both in the states and internationally as a CAFS consultant, trainer, and educator and now wish to offer an avenue to those that desire to gain the same knowledge.

DOMINIC COLLETTI is the foam systems product manager for Hale Products and the author of the books The Compressed Air Foam Systems Handbook and Class A Foam — Best Practice for Structure.

It has proven effectiveness in many applications including Compressed Air Foam Systems (CAFS), structural firefighting, forest fire suppression and prescribed burning, mine fires, industrial Class A fires, and for extinguishing hydrocarbon spill fires.

Phos-Chek WD is the most concentrated Class A foam product available today. Foam Classes. Illinois Class A Foam & CAFS Symposium - OctChampaign, ILL at the Illinois Fire Service Institute Register at New Delivery Instruction & Mechanics Classes Check this linked Calendar for a class in a department near you.

Custom Classes. inFOAMation associates Foam Training - Class A, Class B, Train-the. Great introduction to Class A Compressed Air Foam for firefighters at all levels. Running Time: 14 mins Firefighters Bookstore Item # An Introduction to Compressed Air Foam: Volume 1.

Fortunately, there are ways departments can combat the environmental dangers of Class B foam, such as using compressed air foam systems, which minimize runoff when compared to nozzle-aspirated foam. Additionally, most CAF systems allow pump operators to precisely control the foam expansion ratio for the given situation, reducing foam waste and.

Using Class A Foam For Structural Firefighting - Part 2 Dominic J. Colletti examines the role Class A Foam plays in increasing water’s effectiveness in fighting fires.

The second of four. A compressed air foam system is defined as a standard water pumping system that has an entry point where compressed air can be added to a foam solution to generate foam.

The air compressor also provides energy, which, gallon for gallon, propels compressed air foam farther than aspirated or standard water nozzles. It is proven that CAFS attacks all three sides of the fire triangle simultaneously.

For structural firefighting with compressed air foam, Dominic Colletti recommends utilizing a cubic feet ( m3) per minute to 1 US gal ( L) per minute "air to foam solution" ratio, with. A brief discussion on Foam in the Fire Service. Class A Foam is used on Class A fuels.

Class B foam is used on Class B fuels. As in life, these are two very different fire classes. The two foams are also very different. They may come in the same looking bucket, and make the same white bubbles on the ground, but they are very different.

Compressed air foam systems create bubbles by combining water, foam and air. Bubbles make water more durable and able to absorb the caloric output of the fire.

In the last two installments, we've looked at water, foam and air and the new technology of firefighting. Now let's look some uses for foam.

Comprehensive text for all personnel who need to develop new knowledge and skill levels in order to efficiently adopt and use foam technology in firefighting. Easy-to-read format with over color photos. Covers recent changes in strategy and tactics, incorporates real.

Start studying Chapter 17 fire attack and foam. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Compressed air foam (caf) Class a foam produced by injecting compressed air into a stream of water that has been mixed with percent to 1 percent foam.

Class A Foam For Structural Firefighting December Reported by: Jeff Stern J. Gordon Routley OVERVIEW The increasing use of class A foam systems by urban and suburban fire departments for structural fire suppression has created a demand for information. COMPRESSED AIR FOAM SYSTEMS AND FIRE HOSE BY DOMINIC J.

COLLETTI Editor`s note: This article was chosen for this “Fighting Fire with Water” editorial package for the following reason: Foam. A Compressed Air Foam System for hand hose, abbreviated CAFS, is a system used in firefighting to deliver fire retardant foam for the purpose of extinguishing a fire or protecting unburned areas from becoming involved in flame.

Description. Ron Rochna of the National Interagency Fire Center in Boise, Idaho defines a compressed air foam system as a standard water pumping system that has an. From the definition of Class A foam to how to use compressed air foam systems (CAFS), this book will increase your department’s ability to stop a structure fire.

According to the author, "The use of Class A foam and CAFS can enhance the fire-suppression capability of water up to five times, thus dramatically improving the service it provides 4/5(1). Class A foam is for use against Class A fires such as paper, rubber, textiles and wood.

Class A foams are often intended for use at very low concentration of 0,1 to 1%, and are formulated using environmentally favourable raw materials.

Class A foams are blend of surfactants. The Waterous Around-The-Pump (RTP) Foam System is a simple and inexpensive way to add foam capability to all discharges of the fire pump. The Waterous RTP Foam System consists of an eductor (jet pump) and panel mounted foam proportioning valve.

A table on the foam control panel makes setting the proportioner for 1, 3 and 6% foam easy and accurate. The difference between a CAFS and all other foam systems is a high capacity air compressor that injects air into the foam solution within the fire pump discharge piping.

Figure 2. Components of a Compressed Air Foam System. Source: Colletti, D. Class A foam – Best practice for Structure Firefighters. Royersford: Lyon’s Publishing. TURBOCAFS - Compressed Air Foam Systems (CAFS) for FIRE TRUCK MTK Fire Protection Systems - Duration: MTKfire views.

Class A foam: When used in conjunction with CAFS, class A foam has outstanding insulating qualities. CAFS entrain large amounts of compressed air and small amounts of water into the foam solution to.

The digital foam system removes the traditional pressure restrictions of other foam systems so it is unaffected by hose length, flow rate, or pressures. Whether you are fighting a wildland or structure fire with Class A foam, or fighting a flammable liquid fire with Class B. Compressed Air Foam.

63 likes. A site for firefighters to support the use of Compressed Air Foam and Class A Foam in firefighting. This site also supports the International Class A Foam & CAFS Followers: Foam is a homogeneous blanket of a mixture of liquid chemical and air or a nonflammable gas.

Foam fire suppression systems are classified as high or low expansion. High-expansion foam is an aggregate of bubbles resulting from the mechanical expansion of foam solution by air or other nonflammable gas. Expansion ratios range from –1 to –1. As a largely misunderstood firefighting tactic, the use of foam has at times been confusing to the fire service.

The result is that many municipal brigades/departments have avoided the use of foam, especially Class A foam, and have transitioned to using emulsifiers or wetting agents. The Class A Compressed Air Foam System: Application of Alternative Suppression Agents course is a great training opportunity for all skill levels and ranks.

The course will provide firefighters and fire officers with basic knowledge of foam and foam operations related to. In today’s wide world of available firefighting foam products, a number of fire chiefs with industrial responsibilities are looking beyond installing traditional foam proportioning systems alone and are investigating and then specifying an additional component like Compressed Air Foam Systems.

by Dominic Colletti. Ask virtually any refinery fire chief about specifying the right high-volume. The ICAF compressed air foam system is FM Approved as a local application extinguishing system for class B pool fires, spill fires and cascading fires.

Full-scale fire tests have demonstrated ICAF to be an extremely effective extinguishing mechanism for flammable and combustible liquids, both miscible and. There are many Class A foam systems--aspirated low-expansion foam, aspirated medium-expansion foam, compressed air foam, and foam solution.

For a fire department that wishes to minimize capital. Containing contributions from leading academic and industrial researchers, this book provides a much needed update of foam science research. The first section of the book presents an accessible summary of the theory and fundamentals of foams.

This includes chapters on morphology, drainage, Ostwald ripening, coalescence, rheology, and pneumatic foams.Low- Medium- and High-Expansion Foam and NFPA – Fire Protection for Electric Generating Plants and High-Voltage Direct Current Converter Stations.

Compressed air foam (CAF) is generated by the combination of compressed air, water and foam concentrate in the right proportions, to create a homogeneous foam solution similar to shaving cream.