Outside the Box 360

Performing a 360 upon arrival of a residential structure fire is crucial. Everyone always hits on building construction, type of occupancy, number of floors, and visible fire or smoke.

Did you notice a vehicle in the driveway, indicating someone may be home?

Did you see that the vehicle has a handicap placard on the license plate, indicating the owner may have a disability of some sort?

You walk up to the front door and notice children’s toys in the yard. Do kids live here?

Remember to look at the roof, utility lines connecting the house, solar panels, and satellite dishes. All these things could cause a hazard for crews operating on the scene.

You may arrive on scene and find a lot of clutter in the yard, leading to you assuming there may be hoarding conditions in the residence. We often find ourselves in tunnel vision and not looking at smaller aspects of the scene.

We want to hear from our followers. What are you looking for when you arrive on the scene?

Until next time - work hard, stay safe & live inspired.

The Size-Up

Let’s Talk Size Up! 

Talk. If you just talk is anyone listening? Well, they should be. But if you don’t send the message properly, not only will they not listen, but they will also not get the picture you are painting. So, what is size up? To me, it is much more than just talk. It is giving others the image you are seeing right now. It is giving them vital information about whatever the incident is at hand. Let’s just base this conversation on House fires. What are you looking for? Is it just the building? NOPE! There is so much more. What is the exterior telling you about the possible battles you may face? I recently read a post from OJ Kolodziej, a Fire Captain from Birmingham AL and the owner at Magic City Truck Academy, a Fire based training company similar to mine. If you don’t follow him, you should!  But he made a recent post on size up. It was a short post about vehicle size up at a house fire!  Yup vehicle size up. This simple method will help you find clues of what may be inside this home.  How? Glad ya asked, look into that vehicle instead of running past it!! Well, if you have a visible victim then yeah go past it. For the sake of this article, there are no visible victims. Look at the car, are there any car seats or booster seats, how many? What are the license plates? Handicap, or is there a handicap tag hanging on the mirror? What is the general condition of the car? Is it in shambles and full of stuff and things, this may give insight of the interior of the home. Is the hood warm? What does the back window have for stick figure stickers?? A vehicle can tell you a lot!  

Photo by Ryan Johnston, training burn Greenville Maine 

Now we have looked at the vehicle, what does the door yard look like? SQUIRREL!! Did you notice I didn’t talk about time of day? Yeah, I’m not going to. Now several years ago I might have. But as our world changes so does our size up factors. The lack of or having a vehicle in the driveway at any point day or night is not really a reason (in my opinion) to search more or less. Today’s culture has taught me that it doesn’t matter what time of day it or if a vehicle is present or not that I should not base my search on either of these items. They may direct me towards a targeted search, but not swaying my decision to search. With COVID and just the amount of people working from home, we are likely going to find victims regardless of the time of day.  

OK back to my original thought. You have taken note of the vehicle, and you are likely doing a 360.  What are you seeing? Building type, number of floors, is there the same number of floors in the front as there are in the rear? What are you smelling? What are the conditions? Smoke, Fire,  Nothing? If you do have smoke or fire, from where and how much? You can even get into the smoke volume, color, speed and density. Do you know what your water source is going to be?  What mode of attack will you be in? Offensive, Defensive, Investigation? Once you announce this info over the radio to the incoming units establish command. I am the worst person for a stationary command, but it is important. So, announce the location of command, rely on you officer staff to relay pertinent information to you as needed and once a command post is established stay there, if possible, see what I did there? In the fire service Never and Always are two bad words. The thing about size up is that it is always on going. As the incident changes the resources that you may need or not need changes. I try to reassess the incident every 10 to 15 minutes in the first hour.  After that the incident will dictate my time line. This article is no means the end all to size up. It is  just some of the things I do. Hopefully this will trigger you to look at how you size up your fires and  as always, if you have any questions or comments please reach out! I really enjoy it when we have  feedback, I learn so much from all of you, either when I am out strutting or if it is through this article sparking conversations. SO, how do you size up?  

Ryan Johnston

Owner, Maine-Iac Training

www.maineiactraining.org

ryan@maineiactraining.org

Dangers of College Rental Properties

Having a college in your response area can be a source of frustration and try one’s patience. For many new college students this is their first time living on their own and fending for themselves. This often brings an increase in nuisance alarms, medical calls following the first big campus party and a host of other calls for service. However, as trying as it may be, it is important not to become complacent. In a study published by the U.S. Fire Administration it was found 94% of fatal campus fires took place in off-campus housing. This is an alarming statistic we should be aware of. As the cost for college continues to increase more and more students will look to live off campus to save money. Knowing the common dangers found in off campus housing and the tactical considerations to take when responding to emergencies at these locations is critical for any department that has a college in their response area.

Typically, off campus housing owned by the college are required by either local or state building codes to have a higher level of fire protection. This is also true for privately owned rentals that are either listed as college rentals or multiple dwellings. The most dangerous of the off-campus housing are the privately owned rentals that “fly under the radar” of local building departments. The legality of these occupancies varies based on the authority having jurisdiction as well as local and state building codes. These rental properties are usually close to campus and were once privately owned single-family homes. Due to this, these occupancies are rented as a single-family rental. The rental agreement is signed by one individual, but in reality, a group of individuals live in this rental and share the cost. Yet, as far as any documentation shows it is a single person renting a single-family home. This is how these occupancies “fly under the radar” and are not required to have the same level of fire protection as would an occupancy listed as a multiple dwelling.

The traditional ways one can identify a multiple dwelling from the exterior does not hold true in identifying these off-campus houses. These are often single-family homes and are kept to look that way from the outside. They have one meter as opposed to multiple meters, which ordinarily could have been used to determine how many apartments maybe present. The amount of cars present could signify how many people live at the location. However, because these occupancies were once single-family homes there often is not the space to park more than two vehicles. The number of vehicles may also be limited per the rental agreement, street parking regulations or just the simple fact that many college students do not have their own car. The photo below is of a college rental that on paper is a single-family rental. In 2021 it had 15 college students living in it.

On the inside of these residences the layout may remain similar to its original design or be completely changed to accommodate more individuals. One of these common changes is making living spaces that would normally be a dining room or sitting area into bedrooms. This might be done by placing temporary wall partitions or like in the photo below, simply hanging a large curtain. This is important to note because at 2am bypassing the dining room to head directly to the second floor to search bedrooms might have you passing a bedroom.

Bedrooms or rooms with doors tend to be created into single room occupancies (SROs). Each SRO will have an individual lock and could house multiple renters in a tight space. Often, each of these doors will have a hasp on the interior and exterior of the door and a padlock is used. When a renter leaves, they place the lock on the outside, when they are home, they can place it on the interior hasp. Land lords do it this way for cost saving reasons as well as to make it easy on the land lord when renters change. In the middle of the night during an emergency it is going to be very difficult for occupants to find a key and then open the door increasing the likelihood of trapped victims. Crews should also consider taking the appropriate forcible entry tools because doors in most home that would be unlocked will need to be forced in these occupancies.

In this particular building the front door had a keyed lock on the inside which if engaged could inhibit occupant egress. The occupant’s ability to evacuate is a major issue in these rentals. Looking back at the exterior photo of the building the third floor has no second means of egress leaving only a very narrow interior staircase to get up and down. This staircase is also challenging for crews to ascend to complete searches or get a hose line in place.

Common areas are often overloaded with furniture in what many would consider abnormal configurations. Clutter is also a major issue. Packing so many people into small spaces it is almost impossible to avoid. Below are a few examples of conditions found in these rentals. In the first you can see a living room packed with couches. During the week they are pushed together to allow for easier travel between rooms, but over the weekends and at night they are spread out and block entrances in and out of different rooms to allow people to congregate and sit. The next photo shows a bedroom that has not only a bed, but a couch coffee table and dresser all packed into the room. This is a common setup in these bedrooms.

The third picture is of one of the SRO bedrooms. As you can see it is packed with stuff. Another thing to note is the amount of electronics plugged in. Here we see an AC unit, mini fridge, TV, and fan. Multiple this by however many bedrooms there are, and we have a huge electrical hazard. Many of these rental properties are older homes and do not have updated electrical systems or service this is something to keep in mind when going on investigations in these types of properties. Areas like kitchens and bathrooms generally remain unchanged and are shared amongst the renters, but again can be cluttered and unkept. All of which makes searching and advancing handlines more difficult.

Another thing to note is within these rentals there is usually a locked area which is the landlord’s space that the renters do not have access to. Typically, this is the basement or utility rooms. This allows the landlord to have storage space as well as keeps tenants from being able to access the buildings utilities. This being said, gaining access to the building’s utilities may not be easy and interior doors leading to the basement, attic or utility rooms may be locked and have a higher level of security than one would expect. Taking all of this into account is important when responding to incidents at these occupancies. Being aware of the obstacles one might encounter on the interior not only increases firefighter safety, but more importantly civilian survivability. Knowing you will encounter multiple locked interior doors, atypical layouts and high life hazards are all important in making tactical fireground considerations.

William Morrissey has 14 years of fire service experience and is a career firefighter with the Arlington Fire District (NY). He began his career as a volunteer with the Washingtonville (NY) Fire Department. Morrissey is NY State Fire Instructor and New York State certified code enforcement official and has a bachelors is psychology.

TIC Differences

If you wanted to look at planets in the night sky, would you use the binoculars you take on a hike for looking at wildlife? Probably not. You would use a telescope so you could see as much detail as possible. You would pick the right tool for the right job. 

This is a picture I took during training to show the difference between two thermal imaging cameras. Which one do you want in your hand when operating on the fire ground? I'd actually want both in with the crew but how and when each one is used will depend on the task. The camera on the left is a situational awareness TIC that can be used to locate fire or egress points. It has a lower resolution and a slower processor. I tend to think of them as a "personal" TIC because they are smaller and can be used in a pinch. The camera on the right is a decision making TIC that can be used to search and for tactical, strategic decision making. It has a higher resolution and a faster processor. I tend to think of these as an "officer" TIC because they provide more information in order to direct a crew's efforts. I’m not saying there’s anything wrong with the TIC on the left, but you have to utilize the correct camera for the task at hand. They are different tools for different jobs. 

Train with your TICs in different environments and, if possible, realistic temperature conditions. They will operate in different resolution modes and temperature scales depending on the temperature of the environment and it's important to understand how the TIC will react. Know what the icons on the screen are telling you. Understand the color palettes (ignore the spot temp) so you think of temperatures in terms of colors and react accordingly. Also work on your scanning speed and pattern to help prevent lag and optimize how you collect. Make sure you understand the limitations AND advantages of the TICs you use so you can do your job the best way possible. 

Be Smart - Stay Safe!

Importance of Proper Apparatus Positioning

As the old saying goes, "so goes the first line…so goes the rest of the fire"! With that being said, firefighters must remember this. How we position our apparatus is just as important as how we attack the fire, if not more important. It is imperative the engine company chauffeur and officer know the hose lengths on both the preconnects and static lays. The positioning of the engine is the first tactic done for a proper and strong initial fire attack. Same goes with the truck positioning. Proper positioning of the structure puts the truck at the best advantage for maximum scrub of the aerial for roof operations.

 Positioning an apparatus sounds simple but isn't as cookie cutter as one may think and oftentimes this small step could be misapplied on the fire ground. A miscalculation in the positioning of the apparatus may seem like a minor error in judgement but is also one that is almost impossible to fix and can make or break a scene. How we position our apparatus of any kind, is to do one thing - provide us with the BEST tactical advantage for fire ground operations.

When do we determine or decide where apparatus are positioned on the fire ground?

In short and for starters, during our pre-plan phase or as we could say, the pre-incident size-up. Yes, during this time we look at building construction, potential hazards, understanding interior space, stairwell locations and fire department connections but it is also the best time to consider apparatus placement or at least have an idea of where they will go based on the many factors of the structure.

Here's a few tips to keep in mind when determining apparatus positioning on the fire ground.

• Apparatus positioning should be set up for your best tactical advantage on every call, not just fire.

• Know the area you are responding to.

• Listen to how other apparatus are responding in (direction to the scene) to avoid confusion when arriving.

• Know your apparatus inside and out.

• If you are the truck company, know the engine company role and their best position for the initial stretch

• If you are the engine company, know the truck company role for their best position for aerial setup and maximum scrub. The FRONT of the build is ideal.  

• Train on positioning parallel with your strategies and tactics training.

Keep these tips in mind and train on positioning the apparatus at every scene. Do not park them at the scene.

Until next time, work hard, stay safe & live inspired.

Food Trucks and Firefighting Concerns

For decades food trucks and food carts have been service food to people on street corners, carnivals and events all around the world. In today's world, food trucks and food carts are popping up everywhere. From birthday parties to school and work functions you name it and a food truck is probably there serving food. These carts or trucks are known as Mobile Food Preparation Vehicles or MFPV for short. Some are trucks designed to house a kitchen setup and others are trailers pulled by a truck or SUV. Either way both serve the same purpose, preparing food for customers.

These trucks provide a unique set of challenges for firefighters and provide a few hazards that commonly scene when fighting vehicle fires.

We are very well aware that cooking is the leading cause of accidental fires in the United States with respect to residential fires. With respect to commercial occupancies, these structures are more well equipped to handle the potential of an accidental mishap in the kitchen. Commercial kitchens mitigate the risk through hood suppression systems over their cooking appliances such as ovens, burners and grills. The same goes for MFPVs…but not exactly.

The newly designed, custom-built food trucks will be equipped with hood suppressions systems however the older retro-converted trucks may not be as equipped. Making the workers not as fortunate should an accidental kitchen fire breakout. In all cases, all MFPVs will be equipped with portable fire extinguishers to suppress kitchen fires from grease, fat and cooking oils.

 Propane Tanks

The most significant risk of fires to MFPVs are propane tanks. According to the NFPA, 68% of food truck fires are related to leaks or failures in the propane tanks themselves. Propane is used in various ways with respect to food trucks. For one, they're used as fuel for cooking and possibly refrigeration.

While propane is generally safe to cook with, a small 20-pound cylinder on a backyard grill has the explosive equivalent to 170 sticks of dynamite. MFPVs can carry around 100-pounds of propane cylinders at a time in order to be efficient and produce food services to customers. One hundred pounds of propane is capable of producing more than 2.6 million BTUs (British Thermal Units). One food truck carrying that amount of propane can generate 6 times more energy from an exploding propane tank than a backyard grill using a 20-pound propane tank.

Since these trucks are constantly moving from place to place, the risk of a propane failure can increase. This is due to the trucks driving on bumpy terrain or hitting potholes. Both of which can loosen the connections and fittings or cause structural damage to the tank. With respect to air, propane is heavier. In fact, propane is 1.55 times heavier than air which causes it to sink. Thus, causing a pooling effect near the floor should a tank leak. Because of this, a single spark from the cooking appliances has the potential to ignite the gas.

Many trucks carry spare tanks or have their current tank fitted to the outside of their MFPV which decreases the risk of leaks inside the unit. The risk this does carry is tank explosions from minor collisions on the roadway or single vehicle accidents.

 Generators

Older MFPVs are more likely to pose a risk with the use of portable generators. These are used to run electricity to the truck. Older MFPV's or converted ones could possibly lack the proper ventilation of the off gases from the generators which raise the risk of carbon monoxide emergencies in the mobile unit. 

 Past Incident

On July 1, 2014, in the Feltonville neighborhood of Philadelphia, a leaking propane tank ignited and exploded. The truck operator and her daughter were severely burned and died three weeks later. An additional 10 others were injured as a result of the blast.

Since then, the NFPA has made changes to NFPA 1 and NFPA 96. The leaders at the NFPA concluded that an easily adopted national standard would go a long way in increasing the number of communities with comprehensive food truck safety regulations.

These standards and changes can be found at the links below:

https://www.nfpa.org/news-and-research/publications-and-media/blogs-landing-page/nfpa-today/blog-posts/2018/11/21/nfpa-1-requirements-for-commercial-cooking-equipment-and-updates-from-nfpa-96-firecodefridays-wednesday-edition

https://www.nfpa.org/codes-and-standards/all-codes-and-standards/list-of-codes-and-standards/detail?code=96

Until next time; work hard, stay safe & live inspired.

Vacant Building Proposal: Good or Bad?

On February 22, 2022, the Baltimore Sun released an article regarding a city Councilwomen who wants to issue rules for entering vacant homes and firefighters to wear body cameras. Last month the city of Baltimore saw one of the deadliest fires to firefighters in the city's history. The fire at 205 S. Stricker Street claimed the lives of three firefighters when the building collapsed. In the wake of that incident, the proposal from the councilwomen came to life.

Firefighter social media had plenty of conversations regarding this, and I'm here to give my opinion on it. First, what is the actual proposal? The bill will prohibit city firefighters from entering any "vacant" building if the fire has consumed 25% of the building. It also states firefighters could only enter the "vacant" building if the department confirms a victim is inside and a safe entry can be made. Firefighters are prohibited from entering a collapsed structure unless someone's life is in immediate danger. Lastly, it mentions a requirement for firefighters to wear an audio/video recording device to be used at the scene of fires.

So, there is a lot to take away from this proposal, and I'll break it down using my opinion, starting with the 25% rule. My first question here is, who calculates the 25%? Is it the first arriving unit? In that case, I feel it's relatively simple always to say, "fire has consumed 20%" if we're going merely off a size up, who is going to stop you? 25% of a building is not a lot, which means ¾ of the building does not have visible fire and could easily be accessed for an interior operation. It mentions that firefighters may enter if there is confirmation of a victim and it's safe to enter. Victims aren't always at the windows saying they need help; to find all victims, you have to search; to do that, you have to enter the building. Buildings should be considered occupied until proven otherwise, especially when it comes to vacant buildings in an area such as Baltimore.

I'm torn when it comes to firefighters' audio/video devices. I feel it can easily benefit firefighters for training purposes. It can also help with investigations; god forbid something goes wrong. However, the public trusts the fire department, and they may not want firefighters recording inside their homes. Two things to take away from that, 1) the bill says it will be for fires only, so maybe that does not include your familiar smells and bells where you would get a good visual of the interior of someone's home. 2) Many firefighters already tend to have cameras on their helmets or turnout gear, so would this make a difference? It all comes down to how it is written in the proposal. If lawmakers can convince the community that they won't be using the footage for anything else rather than fires, you may not get any negative feedback.

Firefighters take an oath to protect life and property. Although I honestly feel or at least hope this proposal comes with the best intentions to protect firefighters, it contradicts the job these men and women were hired to do. This article is my opinion only, and I'm not here to bash anyone or say what's wrong or right. I like this to start good conversations. Conversations are great for the fire service. If you'd like to discuss it feel free to contact me, I love hearing from readers and fellow firefighters! My contact info is below. 

Instagram @firemantom193

Twitter @MarchianoTom

The Importance of Fire Behavior

It has been said time and time again, "You can never train too much for a job that can kill you." As we are aware, firefighting has many aspects to it. Many of these are common to every fire department, no matter their location, size, or status (career or volunteer). Other aspects are specialized areas that not all departments focus on or specialize in, such as medical, hazardous materials or technical rescue. In any case, having a sound basis in the area of “firematics” is a steppingstone to success for yourself and for your crew. We will briefly touch on key areas every firefighter should have a sound understanding and strong knowledge of. Many of these areas are touched on briefly in probationary/training school and then oftentimes, pushed aside once graduated. However, these areas are the core foundation for everything we do as firefighters and lay the groundwork for everything else we do on the fire ground. The skills of understanding these concepts, terminology and definitions is in fact, simple in theory. The difficult area is understanding the strategies and tactics behind them in order to implement those them. All good leaders and firefighters must understand these core areas of which everything else it built from. 

The areas I would like to briefly touch upon are building construction, fire behavior, reading smoke and size-up.

Building Construction

In the American Fire Service, there are five and oftentimes six different types of building construction however this may be different in various parts of the world based on the materials used to build structures. As firefighters, it is imperative that we know our enemy and know everything we can about it. Without having at least an understanding of our enemy, it becomes difficult to defeat it. In most every one of our cases, the enemy is the building structure. In order to be a successful firefighter in any capacity, on any apparatus, in any area, understanding and having a solid foundation of building construction knowledge is vital. Just as a world-class fighter study their opponent in the months leading up to a fight, us as firefighter MUST study our buildings in our areas, so we too are prepared to fight…and WIN. 

The most vital piece of information I can provide here is simple. It makes a difference in knowing the different type of structures and how to identify the differences however, what make it even more important is the ability to identify the types and how thewy will react under fire conditions while in the moment! This leads us to fire behavior. 

Fire Behavior

Fire behavior is the foundation on which all firefighter knowledge is built upon. Moreover it is our understanding of fire behavior from which we can gain an understanding of fire and how to suppress it properly. The lack of fire behavior knowledge creates an even greater risk for serious injury or death. Understanding fire behavior is truly being able to operate as a firefighter. The understanding of fire behavior is the basis for understanding fire suppression and the understanding how to properly perform other tactics such as ventilation, forcible entry on some occasions and overhaul.

As society changes or in many cases evolves, so does fire behavior. The reasoning behind this is simple - the introduction and presence of synthetic materials (also known as plastics). These materials in their solid form are petroleum- based products, therefore producing an increase in the output of thermal energy. This reasoning alone is a cause for a more rapidly spreading fire regardless of the type of structure it is in. More so than not, it is causing our enemy (the building) to have more fuel to hurt us. To understand fire behavior, it is important to understand the phases that come a long with it and it’sattributes – ignition, growth, full developed (flashover is present) and decay (back draft is likely). To understand these areas takes years of studying and training to become proficient but have the basic concepts down is a great start to proficiency in fire behavior for firefighters of all levels and experience.

With fire comes smoke. 

Reading Smoke 

An important aspect on the fireground for many reasons is understanding smoke and smoke behavior. Many clues from the smoke alone can help identify the location and status of the fire. Command and company officers, as well as firefighters, need to be able to read and interpret all of the clues while conducting their size-up upon arrival and throughout the incident.  

Here are some clues to take into consideration: potential fuel, density, color, velocity, and volume. 

Smoke is fuel. In today's world and the modern-day fire service, the products of combustion are highly toxic, flammable and potentially explosive. The smoke’s chemical composition is different at each fire due to the different fuel sources yet, one thing remains the same; smoke contains high levels of carbon monoxide.

Density identifies the thickness of the smoke, it’s level of energy and if there is a potential for a flashover or for fire spread. 

Color tells you how flammable the smoke is and what is burning.

Velocity tells us how fast or slow the smoke is moving and by doing so helps determine the location and its flow path. 

Volume on the other hand doesn’t speak to firefighters about smoke or fire but it does give firefighters the amount of fuel that is burning. By knowing how much fuel is burning, provides insight to the size and intensity of the incident.

Understanding smoke provides the fundamentals for reading and identifying changes in fire and smoke conditions in the interior or exterior of a structure, along with identifying and possibly preventing flashover or fire spread. 

Size-Up

The size-up is for all intents and purposes, our game plan or battle plan, if you will, against the structure we are working at. The size-up is where firefighters and fire officers gather information in order to make safe, efficient, and effective fireground decisions. Fireground decision making, as we know, is meant to be quick, but with an emphasis on safety and ensuring the tactics are done efficiently and effectively. This is done in three phases; the pre-incident size-up, the on-scene size-up and the after action review. All three of these have their purposes.

Pre-incident size-up allows firefighters to gather as much information as we can about the structure and in contents inside and helps guide our on-scene strategies and tactics. 

On-scene size-up is where firefighters utilize our pre-incident size-up and put it to work. This size-up is where more information is provided specific to the incident and can now confirm our findings from the pre-incident size-up. Further, this is where company operations are assigned and take place.

 After-action-review is the final stage in the pre-planning process. This is the time for firefighters and officers to discuss and share the information obtained and to discuss the success and failures experienced at the incident. It is also a time to ask a few key questions. 

• What did we expect to happen?

• What actually occurred?

• What went well and why?

• What can we improve upon and how?

The benefit of asking these questions allow for strengths to be easily identifiable and make it easier to uncover areas of weakness. By uncovering areas of weakness, you can develop ways to improve them! 

In closing, I’d like to leave you with this piece of advice. If we think of firematics as an orchestra and each piece getting broken down into sections, we can identify each area as its own unique piece yet, an integral piece to the orchestra as a whole. With practice, each section sounds in harmony and sync with one another, but without practice or even a section missing, the harmony and synchronization doesn’t happen. This is the same for firematics, you cannot have one without the others.

For further information on these topics, you can refer to my book, “The 5-Tool Firefighter” where these concepts are laid out in greater detail along with other areas of interest to guide all firefighters on their journey to success.

Until next time; work hard, stay safe and live inspired.

Solar Panels: A New Addition to Today’s Fire Service Enemy

In a 24 hour period the sun produces enough energy to supply our planet for over four years. That’s 1,460 days of solar energy the planet received in just 24 hours. Solar energy is everywhere and the advancements in it are growing and for many reasons. It's renewable, pollution free and cuts costs of other energy sources. What's this mean for firefighters? Well it means a lot. Solar panels are popping up all over buildings and on plots of land like never before. We're noticing this by a simple placard found on the commercial structures that are now using solar energy with the letters "PV" on it. 

 “PV" which stands for photovoltaic is the method of converting solar energy into direct current electricity (DC) using semiconducting materials that exhibit the "photovoltaic effect". The "P" which stands for photo (light) and the "V" which stands for voltaic (electricity), this of which it bears its name. The PV effect is the creation of voltage or electric current in a material when exposed to light. 

In today's society, solar panels are everywhere just like truss construction is everywhere. Thus creating a need for firefighters to be aware of the dangers and understand how to attack fires with PV systems. 

For firefighters to be safe and operate efficiently on the fireground, there are a few critical steps we must take to ensure the solar panels are accounted for and in check. Do not begin fire suppression until these first 2 steps have been completed.

• 360 Size-up: This is a no-brainer. By performing a 360 size-up upon arrival, firefighters are able to possibly locate the panels or the energy storage system (ESS) if the panels are on the roof or an area without access to at the time. Most of the time depending on jurisdictional building codes, the ESS panels are located on the exterior of the structure normally near the utilities, the garage or the basement, should the structure have one.

• Treat this as an electrical fire and turn off the systems starting with the utility grid. The main breaker box will activate the backup battery and run the risk of electrical shock to interior firefighters in the structure. If the battery is located in a confined space in the structure and exposed to heat above 150 degrees Fahrenheit, it is imperative that ventilation of that space begins.

Once the size-up has taken place with the panels and/or ESS located along with fire suppression taking place, ventilations needs to begin. However, firefighters and command need to understand that if the panels are located on the roof and are burning, there is a potential for collapse based on the volume of fire around the panels and on the roof. 

 When performing ventilation, especially vertical ventilation, firefighters must recognize that electricity is being produced by the panels 24 hours a day. 

• Once these steps have taken place, fire suppression can now continue. As a safety precaution, firefighters should try and extinguish the fire at a minimum of 20 feet away when using a straight stream or a minimum of 5 feet when using a fog pattern.

• After the fire has been knocked, overhaul can begin - carefully.

Panel safety

Firefighters should be careful not to touch any of the panels in case of any damage done to them during the fire. Instead, firefighters should cover the panels with canvas tarps, especially at night due to no sunlight exposure to them. The reason panels should be covered during night operations is due to the wires running through the conduit to the charge controller or inverter which continues providing the panels power. 

Battery safety

If the battery was the source of the fire, continual water flow to the extinguished battery is important to keep the battery cool and from the possibility of obtaining a chemical reaction causing a thermal runaway. Should a thermal runaway occur, the temperature inside the battery will reach the point that causes a chemical reaction inside the battery. This reaction produces more heat and drives the temperature of the battery higher, causing further chemical reactions and more heat. In thermal runaway, the battery cell temperature will rise in milliseconds and release suddenly. The chain reaction will reach temperatures of around 752 degrees Fahrenheit and produce gassing of the battery along with fire. 

Burns tests have shown that lithium-ion batteries can produce these chemical reactions 72 hours after extinguishment. 

 As technology changes, firefighters need to be educated and trained on all of the new advancements in the market today. By doing so, firefighters can continue to develop a proactive approach to new technology when responding to incidents. Solar panels may not be completely new to us but the growth of them in residential and commercial structures has rapidly increased over the years. Today, it is nearly impossible to not catch a glimpse of solar panels on almost every street across the country. Stay diligent to the advancements in the world and continue to keep training and getting after it.

 Until next time; work hard, stay safe & live inspired.

Exposure Protection: The In’s & Out’s

A well trained group of firefighters with a solid foundation of a good coordinated fire attack is critical to the success of fireground operations. Plan and simple. Understanding fire attack as well as fire behavior in particular structures also provides a good understanding of exposure protection. Many firefighters if not all firefighters heard of or know the acronym RECEO VS (Rescue, Exposure, Confine, Extinguish, Overhaul, Ventilate, Salvage) which is a critical thinking tool to assist with our tactical decision making based on the situation at hand. This article will talk about the "E" in RECEO VS - exposure. Something that is oftentimes overlooked. 

One third of our fireground responsibilities is property conservation. If we remember, L.I.P. (life safety, incident stabilization and property conservation). This stands true for interior or exterior exposures. Thorough size ups and a well performed search and location of fire will assist our needs of potential exposures and a way for firefighters to get ahead of the fire. One thing we always want to do, is get ahead of the fire before it gets ahead of us. 

A way to get ahead and hopefully stay ahead of the fire is to establish exposure lines in order to protect fire spread through the means of a secondary line(s). By doing so, we are allowing ourselves to stay ahead of any rapid fire progress and putting ourselves in a position to contain the fires forward progress. Fire can and will advance itself in any and all directions based through various ways.

1. Direct flame contact

2. Radiant heat

3. Convection

4. Embers

5. Heat contained in smoke. 

If we can understand where the fire is going, taking into consideration it's speed, type of structure and location to name a few, we can better position ourselves in front of the fire's flow path and cut off any potential exposure problem. 

Interior exposure considerations 

1. The BOX we are working on (4 walls, 1 ceiling, 1 floor). Heat travels up which makes the floor above the fire one of the most critical areas to protect. Don’t forget to check the floors below. Fire can drop floors just as easily as it can travel up floors.

2. Mushroom Effect. Top floors of a structure have a tendency to collect heat, smoke and products of combustion with nowhere to go. A calculated vent will help with reducing this effect.

3. Common cockloft. A hose line, a few pike poles and a TIC can help alleviate fire spread.

4. Interior design. Based on how the structure is designed can determine how fire will spread. Open floor plans present a great opportunity for fire spread since there is nothing to impede heat to travel and fire to spread. Open floor plans are common in both residential and commercial dwellings. Keep a look out for renovations as well. 

Exterior exposure considerations

1.   Structures on the sides of the fire building.

2.   Structures in front of the fire building

3.   Structures to the rear of the building

Note: exposure problems around the exterior of the fire building could be at risk of absorbing radiant heat, therefore hoselines on the exterior should direct their streams to the structures themselves to help reduce the amount of heat they are absorbing and not spray water in the opening between the structures. By spraying water between structures will still allow radiant heat to be absorbed by the exposed structures. 

A group of well trained firefighters in well trained hose deployment techniques allows us to get ahead of the fire before it gets ahead of us.

Until next time; work hard, stay safe & live inspired.

Tis the Season for CO Alarms

It’s that time of the year again, furnaces in full force, fire places in use and gas appliances being used more so now than outdoor grills. With this season change the higher expectation of carbon monoxide alarms begin to rise. Why is this a concern? Carbon Monoxide or CO, is a colorless, odorless, tasteless and flammable gas with it being the leading cause of accidental poisoning deaths in America. 

CO, a byproduct of incomplete combustion of fuel sources such as natural gas, wood, propane and coal to name a few, can be found in many areas of indoor and outdoor living areas such as kitchens, laundry rooms, garages and wood burning stoves and fireplaces. Because of this CO can be generated in 3 ways; through a solid, liquid and a gas.

Examples of forms:

Solid: wood

Liquid: Oil, propane, gasoline 

Gas: Natural gas

Further, CO could also be “man made” through motor vehicle exhaust, cigarette smoke and cooking appliances yet all use some type of fuel source and generated through a solid, liquid or gas.

Physiological Effects 

Annually, several hundred thousand people are exposed to CO poisoning with 20-40% of survivors suffering immediate or delayed neuropsychological deficits and other health damage. One of these is Hypoxic Stress, which is the reduction of oxygen-carrying capacity of blood leading to inadequate oxygenation of cells, tissues and organs. Our brains are susceptible to hypoxia although subtle effects of CO could prevent us from being aware.

Earlier, we mentioned cigarette smoke being a man made cause of CO. Well, in a non-smoker the COHb levels in the blood is between 0.4% and 1.4%. In smokers who smoke one pack per day have up to 5% COHb in their blood. Due to this, cognitive ability in longer term smokers has been known to decrease.

Symptoms of CO

1. Headache

2. Fatigue 

3. Nausea 

4. Dizziness 

5. Confusion

6. Cardiac palpitations

7. Loss of consciousnesses 

8. Coma 

9. Death

Let’s now discuss CO Emergencies

Upon arrival, the first arriving officer should ask the following to the occupants prior to investigating the dwelling:

1. Is anyone experiencing any symptoms? 

2. What appliances were being used prior to the alarm?

If no appliances that would trigger a CO alarm were used or the occupants can’t retrace their steps, here are a few options:

Try and recreate the situation from what the occupants have done over the last 6-10 hours because it could be a slow leak. 

1. Observe the occupants for signs of CO poisoning and ensure they are in fresh air while the scene is being investigated. 

2. Check the fireplace, the furnace intake, draft hood, water heater and gas-fed furnace.

3. Ensure gas flames are blue and not yellow or orange, this is a sign of CO.

4. Laptops or tablets charging. This is rare but could happen. 

5. Check the batteries 

If the source is still unfound, request the local gas and utility company to the scene. Also, if operating in a multi-resident occupancy, check adoring apartments and buildings. Depending on your area, think outside of the box. Does this occupancy have a shared chimney? Is it a duplex? Shotgun house or an odd renovation style? This all could be indicators for unfound CO due to its building construction. 

Lastly, ensure alarms are in their proper locations in the occupancy and always don your SCBA with readings at or exceeding 9 ppm. 

Until next time; work hard, stay safe & live inspired.

About the Author

NICHOLAS J. HIGGINS is a firefighter with 17 years in the fire service in Piscataway, NJ, a NJ State certified level 2 fire instructor and a State of New Jersey Advocate for the National Fallen Firefighter’s Foundation. A martial arts practitioner and former collegiate athlete in baseball, Nick is also a National Exercise & Sports Trainer Association Battle Ropes Instructor, Functional Fitness Instructor and Nutrition Coach.  He holds a B.S. in Accounting from Kean University and is the founder/contributor of the Firehouse Tribune website. Nick has spoken at the 2017 & 2018 Firehouse Expo in Nashville, TN as well as at numerous fire departments within NJ.

Understanding Wind Driven Fires

From the beginning of time Mother Nature has presented mankind with all kinds of meteorological phenomenon’s and the one we are going to discuss in this article is wind its effect on us as firefighters. As we know we cannot fight with Mother Nature but instead work with her when the weather-related challenges are presented to us on fire scenes.

It has been estimated that been 2002 and 2010 approximately 24 firefighters were killed in structure fires due to wind as a factor most notably was the April 12, 2009 house fire in Houston, Texas that claimed the lives of two firefighters operating in a ranch style home. More recently was the March 26, 2014 fire in the Back Bay of Boston, MA that claimed the lives of two firefighters operating in a brownstone style home. May these firefighters and all those who lost their lives, rest in peace.

The first thing we should understand is that no matter what type of firefighter we are – structural, wildland, hazmat – what is wind in respect to fire? According to the National Institute of Standards and Technology, wind speeds as little as 10 miles per hour can cause rapid fire progression in a structure regardless of the structure. Prevailing winds that enter a fire-vented location of the structure could create a flow path of blowtorch-effect flames and untenable temperatures when a secondary opening is created. 

The next thing we should understand is how to identify and attack wind driven fires because we cannot predict or stop when wind will affect fires.

1.       Understand wind and its effect on fires.

2.       Understand the blowtorch effect

3.       Size up the structure with a complete 360-degree size up. Pressurized wind

4.       If there is a wind-driven condition found, notify all units on the fire ground.

5.       Coordinate and control all vent points.

6.       If possible, avoid advancing through a downwind opening. Determine the wind pattern and adjust your tactics. Advancing through a downwind opening from the unburned side will create a wind trap for firefighters and possible victims involved in a potentially dangerous flow path.

7.       Understand flow path.

8.       Implement LCES

9.       Lastly, consider a transitional attack on the fire. Attack from the involved side to the uninvolved side and if possible conduct search, rescue and additional and final fire control operations from the involved side as well.

Flow Path with no Wind & Flow Path with Wind

First, what is a flow path? A flow path is the area between where the fire is and where the fire wants to go.

To establish a flow path in a structure with no wind, we need to remember two key concepts.

1.       Windows create a bidirectional flow with fresh air coming in through the bottom and exhaust coming out from the top.

2.       Once the ceiling is vented, it will pull the superheated gas, smoke and fire to the vent point creating a flow path.

To establish a flow path in a structure with wind, we need to remember these two key concepts.

1.       The wind in the structure will override the pressure of the outlet in the window creating a unidirectional flow path into the structure instead of out of the structure.

2.       The ceiling vent will provide the only exit for the exhaust. The wind will force all the superheated gases, smoke and fire rapidly through the structure to that single outlet thus causing what is known as the Blowtorch Effect.

Blowtorch Effect

The blowtorch effect is the area of wind driven fires that is sadly and untimely claiming the lives of firefighters entering wind driven affected structures. Like the fire triangle & tetrahedron, the blowtorch effect has a similar shape: The Blowtorch Triangle. This triangle consists of an inlet, out and heat. Just like the fire triangle and tetrahedron if we remove one side we reduce the possibility of the triangle.

Removing the Outlet

To remove the outlet we need to remember door control throughout the exterior and interior openings as fire personnel pass through or encounter during their operations. This reduces the potential flow path and reduces the potential for the blowtorch effect. Also, stay in coordination with the vent team. Any uncoordinated ventilation will create an additional flow path to the vent opening.

Removing Heat

To remove heat, consider using a transitional attack. Begin with an exterior attack prior to entry to extinguish the gases and bring the fire to a contents fire to allow for more ideal conditions for interior crews about to go in.  This is done by a straight stream directed solely at the ceiling through a window opening or door. This will not push the fire, only cool it.

Removing the Inlet

Considering using Wind Control Devices and salvage covers on open windows and doors especially in high rise buildings. The WCD’s will minimize the winds impact on fire spread throughout the structure.

LCES

Lookouts: Command must be aware of changing conditions. Door control firefighter should monitor smoke conditions and location of firefighters inside. RIC should perform a 360 size up and constantly watch for changing conditions. Everyone on scene is considered a lookout.

Communication: Report wind conditions upon arrival, status of doors and windows that are opened/closed and report any changes in conditions.

Escape Routes: Operating from the upwind size can make for easier escape routes and safety zones. It may not be possible to ensure escape routes and safety zones on the downwind side due to the potential of unpredictable fire behavior.

Safety Zones: Closing doors behind you as your advance through the structure can provide as a temporary area of refuge and increase survival time until you can escape or rescue crews get to you.

Understanding wind and wind driven fires can be tricky and cause for a long day at the office but our goal is to go home to our families after it’s all said and done.

Until next time; work hard, stay safe and live inspired. 

About the Author

NICHOLAS J. HIGGINS is a firefighter with 15 years in the service all within departments in Piscataway, NJ. Nick has held the ranks of Lieutenant and Captain as well as being a township elected District Fire Commissioner for 1 term (3 years) in Piscataway, NJ. He is also a NJ State certified level 2 fire instructor. He holds a B.S. in Accounting from Kean University working in Corporate Taxation and is the founder/contributor of the Firehouse Tribune website.

Fire Fact

According to studies, wood burns at 1,880 degrees Fahrenheit which is one degree hotter than gasoline which burns at 1,879 degrees Fahrenheit yet is much less than methanol also known as “wood alcohol” which burns at 2,190 degrees Fahrenheit; 310 degrees hotter than wood but in a normal atmosphere most materials will burn near the same temperature. (Source: NFPA 921, 2014 ed. Table 5.6.5.1.)

In a controlled setting this will stand true since burn times for each of these are vastly different as well as the heat release rate that is being produce by these as well. Temperatures are good to know but also knowing that the more the products of combustion in the room (their respective temperatures will still be produced) the greater the HRR and the greater fire flow needed.

That’s your fire tip of the week! For more on HRR and fire flow check out our article "Importance of Fire Flow in Today's Fire Service" on why an increased fire flow plays a tremendous part in cooling the products of combustion in today’s rapidly changing society.

The Ever-Changing Fire Service and its debate over Fire Suppression Strategy and Technology

For many departments and fire service leaders, the fire service has a saying “100+ years of tradition unimpeded by progress”. For others, this same saying is “100+ years of progress unimpeded by tradition”. This issue may certainly take root in the debate over a drinking glass, and which way you look at it.  Is the glass half empty, or is it half full?  The perspective issue at hand is our own fire service’s strategy and integration of technology in fire suppression. We have come to learn terms such as RECEOVS or SLICERS.  RECEOVS stands for Rescue, Exposures, Contain, Extinguish, Overhaul, Ventilation, Salvage. SLICERS stands for Size-up, Locate the fire, Identify flow path, Cool the space, Extinguish, Rescue, Salvage. Isn’t the first priority of all incidents life safety? Why would we start changing our tactics? Some of this change can be focused on the fact that the materials which are burning in today’s structure fires greatly differs from those of the 1960’s, 70’s, 80’s and into the 90’s. Those days of firefighting saw most of the combustibles being made up of wood, cotton, paper and a few plastics or oil based products. Today’s fires are burning much hotter due to the majority of combustibles being of plastic and oil based products. Today’s lightweight construction has not helped; this construction makes surface areas easier to burn and causes a failure of the structure much more rapidly.

These changes have led to some possibly make drastic changes in the strategy and tactics.   One major decision factor which needs to be utilized is what we use to put fires out. Since the start of the early fire service, we have relied on water to put out fires. For many departments, we continue to put out fires with water and only water.  Water takes out only one area of the fire tetrahedron, it cools the surface. The new combustibles which are in everyday residences, commercial buildings and industrial facilities are multi-faceted and require eliminating multiple sides of the fire tetrahedron for successful rapid extinguishment.

We are faced with the exponentially growing use of oil and plastic based products in those burning materials. Some of members have changed their strategy and tactics rather than consider changing what is used to put out the fire. Albert Einstein once said, “Insanity is doing the same thing over and over again and expecting different results.” This certainly applies to our current fire service. We continue to put out fires with water and only water when our environment, the composition of the burning material, is rapidly changing around us each and every day. This is doing the same thing over and over, expecting different results.

One such area for our fire service should look at is using alternative agents for extinguishing fires. These alternative extinguishing agents include foam concentrate, dry chemical powder, clean agents and water misting. These systems and their fire suppression products are becoming more widely used across the private sector for industrial and commercial fire suppression applications. The possibility may be there for a transition of use in some aspects of suppression in municipal firefighting. For most of us in the fire service, we think of using foam on liquid fuels or stubborn industrial fires. Most don’t see us using it in private dwelling fires or main street America type occupancies. When we think about it, how many of us still have a majority of items in our homes or businesses from the 1940’s through the 1990’s? Not many. Yet we still use the same tactic of only using water.                   

In 2014, Underwriters Laboratories (UL) provided an analysis of changing residential fire dynamics. Areas of the report cited that larger homes, open home geometries, increased fuel loads and new construction materials have led to faster fire propagation, shorter times to flashover, rapid changes in fire dynamics and shorter times to collapse. Experiments that were done by UL showed that flashovers are occurring at 5 minute time frame when it used to be 30 minutes or more to reach flashover conditions. Another area of the report showed that temperatures of fires in modern or legacy construction are much hotter than that of the tradition construction.  The National Institute of Standards and Technologies (NIST) has also conducted studies as well in analyzing the changes we are facing in the fire service. Their study revealed that little has been done in the way of researching the effectiveness of manual hose lines. As more research is done we can begin to see how the big picture relating to fire suppression strategy and tactics is going to unfold and how best we can improvise, adapt and overcome challenges in this ever changing landscape.

The truth in the matter is that, the fire we see today is made up of these highly combustible products. Rather than just adopting new tactics in how we fight fire and suppress fire, maybe we need to consider options of learning from the private sector fire protection companies and teaming up with manufacturers to come up with new technological solutions to growing problems.  Our fire service is ever changing, fires burning hotter, lightweight construction collapsing quicker, response times increasing, staffing decreasing but we continue to stay the course while our environment continues to change.  Are we, as a fire service still willing to be “100+ years of tradition unimpeded by progress” or “100 years of progress unimpeded by tradition” the glass is yours, is it half full or half empty?  

About the Author

NICHOLAS WITCZAK is the lieutenant of Brookside Engine Co. 1 and volunteer EMT for the Mendham Township First Aid Squad. Additionally he serves as the Mendham Borough OEM Coordinator. Nick has served in a multitude of departments and positions over the last 8 years including Past Captain of Morristown Ambulance Squad, volunteer firefighter/EMT in combination fire departments including the Wallingford and Allingtown Connecticut fire departments. He has wealth of experience working and volunteering in emergency medical services including municipal, commercial, fire based EMS and 911 fire dispatching. He currently holds a B.S. in Fire Administration from the University of New Haven. Nick works full time in the fire protection industry specializing in safety, sales and project management. He works part time as the NJ Client Development Coordinator for Emergency Resource Management. 

Know Your Primary Response Structures

How often do you take tours of the buildings in your Primary? Is it only when a new building is built that you go through them? Do you even take the time to walk through the new buildings? As Francis Brannigan used to say, “The building is your enemy, Know your enemy.”

While on an Activated Fire Alarm at one of the structures in our primary, we had one of our newer members asking a few questions about the building. Being we had the time, we arranged with the building owner’s representative to be able to wander through and show the new guy around. Junior guys are great for reasons to walk through buildings, and senior guys can’t possibly remember everything about every building in our primary.

While walking through this building, we started discussing how there were some unique features. This particular structure houses a theater which in and of itself creates a slew of hazards with movable walls, increased electrical needs, hidden voids for wiring etc. In addition to that area, the basement of the building contains an old inground pool. Yeah, a pool. It was decommissioned due to new safety regulations and walkway widths but the actual concrete structure remains. Now imagine searching this building and going over the edge of this pool, falling ten feet into the deep end and not being able to get out? What about during a structure fire, giving all of the water that we’re pouring into the structure a place to go which creates a drowning hazard. Rarely do we enter a building and expect there to be a pool in the basement, but this is the benefit of the walk through process.

My challenge to you for the month of October, get into at least one building in your primary that you haven’t been in recently. Yes, you can cheat and do a building that you know well, but then what are we really learning? Get into a building that you aren’t sure about, note the location of exits, the type of construction, FDC/Sprinkler connections if any and actually walk through it. You might be amazed at what you’ll find.

Until then remember, Amateurs train until they get it right, Professionals train until they can’t get it wrong. Stay safe out there.

 About the Author

View fullsize

DAVID WIKLANSKI is a Firefighter/EMT for the New Brunswick (NJ) Fire Department. He is a NJ certified Fire Instructor level II and EMT Instructor. He has a Master’s degree in Behavioral Sciences from Kean University where he is on faculty with the Psychology Department. He authored the book Suicide Bombers: Understanding Suicide Terrorism from a Cultural and Memetic Perspective. He is the owner of Alpha Omega Training Solutions. 

Understand a Backdraft

In today’s society firefighters are responding to fires during the later stage of the fully developed stage or at beginning of the decaying stage of fire. This is to no fault of our own, in which multiple factors go into this such as time of day, traffic, faulty fire alarms systems or lack thereof, etc., but understanding the risk of responding to fires as this stage and the vital role we play by knowing fire behavior and knowing the effects of what happens at each stage of fire growth. In this stage, we as firefighters are at an inherent risk of responding to confined fires deprived of oxygen and without proper ventilation and coordination, we are adding to the problem rather than making it better. One of the biggest risk we run into is called a backdraft. A backdraft, also known as a smoke explosion NFPA 921: Guide for Fire & Explosion Investigations, 2011 Edition as, “A deflagration resulting from the sudden introduction of air into a confined space containing oxygen-deficient products of incomplete combustion.” 

So let’s talk now about the science of a backdraft. In decaying stage burning is incomplete because of the lack of oxygen feeding the fire, causing the fire to smolder or burn out. Nonetheless, the heat released from the fully developed state still remains and all flammable products of combustion are waiting for an introduction to oxygen so they can instantaneously combust in the room. We as trained firefighters can prevent this act from happening through proper ventilation. By doing so properly and in a timely manner, the upper areas in the room will be cleared from smoke and unburned gases which is done at the highest point possible. Coincidentally, if this is improperly done, the same unburned gases and other products of combustion are now at a higher risk to instantaneously combust once oxygen is introduced to the room causing a devastating effect on the structure and those in and around it. It is to be known that it only takes 25% of the space in a room or fire area to cause a backdraft to occur. 
With this being said there are certain warning signs that can be seen to indicate if a backdraft appears emanate:

• Black smoke becoming dense, greyish yellow

• Confinement and excessive heat

• Little or no visible flame

• Smoke leaving the building in puffs and being drawn back in

• Smoke stained and/or rattling windows

• Muffled sounds

• Sudden, rapid movement of air and smoke inward when an opening is made
Now that we have discussed the science of a backdraft, let us now discuss how we can safely manage this type of situation.

Ventilation

Vertical ventilation is possibly the best and most effective method of venting a structure showing signs of a backdraft. This will allow for the superheated gases to escape without introducing an excessive amount of oxygen into the structure. Should an explosion still occur during vertical vent, the force will be directed up and away from the vent crew that created the opening (roof cuts, skylight pops, etc.). Should vertical ventilation not be possible for us, horizontal ventilation is a consideration. This could be done using pike poles 6 feet or greater and positioning yourself near the corner of the building and moving all companies out of the “hot zone” or collapse zone. 

Quenching

Another method would be to quench the gases. This is done before we enter the room where the superheated gases were present. A few short blasts of water to the ceiling (also known as penciling) will provide enough cooling to stop an explosion from occurring. By doing this, we are controlling the heat release rate (HHR) and if we can control the heat release rate we can control the fire. 

Flanking

If vertical vent and quenching not be an option, we could consider flanking the fire. To flank the fire, we should position engine company crews at the sides of the doorway and cool the room (compartment) with their hose streams. When doing this, make sure to not cross hose streams and take note of the windows in the room, if possible. A psi pressure of a mere 0.5 will blow windows out.  

Let’s all take this and answer these questions next time we are working on the fire ground.

What do you see upon arrival as the initial Incident Commander or first due Engine Company? 

What significance do these observations tell us about the fire conditions?

What's is the smoke telling us? 

What would be your actions?

Until next time; work hard, stay safe and live inspired.  

About the Author

NICHOLAS J. HIGGINS is a firefighter with 14 years of service all within departments in Piscataway, NJ. Nick has held the ranks of Lieutenant and Captain as well as being a township elected District Fire Commissioner for 1 term (3 years) in Piscataway, NJ. He is also a NJ State certified level 2 fire instructor. He holds a B.S. in Accounting from Kean University working in Corporate Taxation and is the founder/contributor of the Firehouse Tribune website.

The Halligan & its Mechanical Advantages for Forcible Entry

The most used and go to tool in the fire service as we all know is the Halligan. The Halligan as we know is used for “everything” from forcing a door to searching a room, making purchase points in vehicle extrication to wall breaches and clearing windows for ventilation or a possible egress. You name it and a Halligan bar will probably be a tool of choice for any job on the fire ground, if not the tool of choice. Every apparatus has one or more on them for a reason, so it’s best we know not only what it’s used for but also know the bar.

Being able to use a Halligan for multiple purposes on the fire ground is wonderful but knowing the dimensions of the Halligan can offer firefighters more of an advantage when using the tool especially during forcible entry.  

But first let’s start with the bar’s history.

The Halligan was invented by Deputy Chief Hugh A. Halligan of the FDNY in the 1940s. Hugh Halligan was first appointed chief of the FDNY on June 16, 1916. Prior to the Halligan, the tools of choice or its predecessors as we could call it were the Claw tool and the Kelly tool. The Claw tool was considered one of the FDNY’s first forcible entry tools. The downside to this tool was its weight and the off-centered striking surface that made it dangerous for the firefighter holding the tool as it was being driven into a door.

The next tool was choice was the Kelly tool which was developed by the then captain of Ladder Company 163, John Kelly. Unlike the Claw tool, the Kelly tools striking surface was inline with the bar and had a 90 degree flat surface (adze end). Similarly to Claw tool, the Kelly tool was also welded and still heavy and due to both tools specific advantages, both were to be used during fire ground operations.

This is where Chief Halligan came in and wanted to develop a tool that could be held in one hand, wouldn’t break or crack and would not fatigue a firefighter while using it. This was the birth of the Halligan bar. The bar was made of cross-drop forged from one piece of No. 4140 high carbon content steel. As soon as the tool was available on the market it was a huge success that the Boston Fire Department was one of the first departments to place a Halligan bar on every ladder company in the department.

Today most of us use the modern take on the Halligan or the Pro Bar as it is called, which is the one tool that has stayed most true to original specs of the Halligan bar. It is fabricated from one piece of drop forged steel and measures 30 inches in length. The forks have a tapered V shape of space between them along with a gradual curve for leverage when prying. The adze end and pick also have a gradual curve for more of an advantage as well.

The dimensions of the Halligan bar

A standard Halligan is 30 inches in overall length. It consists of an adze end, a pick and a fork (or claw). The fork is 6 inches in length and the crotch of the fork is 5 inches – this is key for conventional forcible entry. The adze end is also 6 inches in length and 2 inches wide. The pick is 6 inches in length and the adze/pick triangle is 5 inches tall.  

Now that we know the dimensions of the Halligan bar, how will this help us in forcible entry?

Using the Adze end

More often than not when dealing with outward swinging doors, we will look to gap, crush or tunnel the door between the door (above the lock) and the jamb using the adze end of the Halligan in doing so and moving the tool up or down offering a 15:1 mechanical advantage with a maximum spread of 2 inches (width of the adze). The 15:1 MA is from the 30 inch Halligan bar and the 2 inch adze end of the bar. When forcing an outward swinging door it is advantageous to pry down on left side opening doors and pry up on right side opening doors. The key is to roll up in the direction opposite the pick to gain maximum leverage.

Forcing inward swinging doors is done in the same fashion as outward swinging doors except the Halligan is used in a different position yet the mechanical advantages will remain the same.

Using the adze end is similar to a class I lever. This is where the fulcrum placed between the effort and load. The movement of the load is in the opposite direction of the movement of the effort and the most typical lever configuration. Fulcrum or pivot point is the point on which an object balances or turns.

Using the Fork

When driving the fork between the door and the frame, the fork should be driven 3 inches past the edge of the door frame creating fulcrum. This will put our load on the Halligan at the 5 inch mark (the length of the crotch of the Halligan) at the door jamb, resulting in a load to fulcrum length of 2 inches. The more we drive our Halligan into the jamb the less we of a mechanical advantage we have when using the tool.

Using the fork is similar to a class II lever. This is where the load is between the effort and the fulcrum. In this, the movement of the load is in the same direction as the effort.

Work hard, stay safe and live inspired. 

About the Author

NICHOLAS J. HIGGINS is a firefighter with 14 years of service all within departments in Piscataway, NJ. Nick has held the ranks of Lieutenant and Captain as well as being a township elected District Fire Commissioner for 1 term (3 years) in Piscataway, NJ. He is also a NJ State certified level 2 fire instructor. He holds a B.S. in Accounting from Kean University working in Corporate Taxation and is the founder/contributor of the Firehouse Tribune website.

Preplan & Size Up Quick Tip

One thing we can do as firefighters is know our enemy. In most aspects, the enemy is the building or buildings we may be working in. Understanding building construction, including fire behavior within different construction types, will greatly help you, your crew and other firefighters on the fire ground. Adding this component into your preplanning and size up considerations is a great way to practice your building construction knowledge along with strategies and tactics. Next time you are in the firehouse, gather your crew, open Google Maps to an address in your primary response area, preplan and even go as far as putting scenarios together to practice ICS, strategies, and tactics. It’ll get you and your crew thinking together and also build conversation and camaraderie.

Until next time; work hard, stay safe and live inspired.  

About the Author

NICHOLAS J. HIGGINS is a firefighter with 15 years in the fire service all within departments in Piscataway, NJ. Nick has held the ranks of Lieutenant and Captain as well as being a township elected District Fire Commissioner for 1 term (3 years) in Piscataway, NJ. He is also a NJ State certified level 2 fire instructor. He holds a B.S. in Accounting from Kean University working in Corporate Taxation and is the founder/contributor of the Firehouse Tribune website.