The Bathtub Collapse, Part 2

Part 1 of this series was an introduction to Bathtub Collapse problem identification, exterior size-up, strategy considerations and development, and safety considerations. Part 2 discusses tactical considerations, interior size-up, victim recovery, investigations, and incident termination.

Tactics

In order to make a bathtub collapse rescue safe and efficient, the operation must follow a logical sequence. The first step in this sequence is to support the sides of the bathtub. If the bathtub is formed by structural walls or columns, start by shoring them. Raker shoring systems are a good way to support exterior walls.(1) For masonry or wooden walls, traditional raker shore types are appropriate. Modified split sole rakers may be used to provide columns with lateral support. Visibly stressed walls or columns should be shored first. If the wall or column is leaning or cracked, it’s stressed.


Extrication Strut as a temporary door shore

The next step is to support natural entry points, then open them. Door and window openings can be shored as in any other structural collapse. You may need to frame the edges of the opening with a raker system prior to shoring the actual opening. Once the door opening is supported, additional bathtub components such as metal Q-decking, rebar grids, and other metal components may be cut away to clear the opening for access and egress. Cutting operations create sparks, open flames, or both. Ensure that the building’s gas supplies are shut off and that the area is well-ventilated prior to using cutting tools that create ignition sources. Also ensure that both water and dry chemical extinguishers or a charged hoseline are nearby curing cutting operations.


Cutting Q-decking and rebar obstructions with a rotary saw

Once the interior of the bathtub is accessed, it may be necessary to use strongbacks and tiebacks to support inward-leaning walls. Picket systems or large, well-secured anchors should be used to anchor the exterior tiebacks. Place towels, blankets, etc. over the tieback cables to reduce whipping in the event of cable failure. Once the tieback system is complete, keep everyone out of the immediate area.

Widowmakers

Once the bathtub walls are secure, it’s time to take care of overhead hazards. Identify all widowmakers and eliminate falling object hazards by using one of the following methods;

1. Secure the widowmaker by tying it to solid structural components with cables, chains, come-alongs, etc.
2. Remove the widowmaker by bolting it, then tensioning it with a crane, and cutting it loose from the structure.
3. Avoid the widowmaker by marking and enforcing a collapse zone beneath the widowmaker. This may not be possible, as the victims may be trapped directly below the widowmaker.

Search Tactics

Once the surrounding structure is secured, the interior search can begin. Start by searching voids and by manually removing selected debris.(2) Voids may be searched visually with flashlights, thermal imaging cameras (TICs), USAR or fiber optic search cameras, and by probing voids with pike poles. It is important to note that wet concrete produces heat, and this heat may mask the heat signature of a human body when searching with TICs. Remember that TICs cannot “see” through solid materials such as structural components.

Simultaneously with the void search and light debris removal, other crews may start searching through the wet concrete in the bathtub. You may manually search for gaps in the horizontal Q-deck by simply using gloved hands to probe through the wet concrete and any gaps in the edges of the Q-decking.

Victim Search in a Bathtub Collapse

It is also important to create horizontal openings in the vertical Q-decking parts of the bathtub. This allows horizontal removal of some of the concrete while it is still wet. Hoselines can be used to keep the concrete wet and dilute as long as the water will not run into voids and drown the victim or cause hypothermia. Scoop shovels and even stiff-bristled push brooms can be used to move wet concrete through the bathtub openings.


Hose Stream dilutes and moves wet concrete

Bathtub Collapses into Basements

If it is necessary to lift wet concrete out of a basement, simple bucket-and-rope systems may be used, but they are manpower-intensive. Vacuum trucks may be useful, but the concrete may be too heavy for the vacuum to lift it very far. Large amounts of water will probably be required to dilute the concrete enough for a vacuum truck to lift it, and that much water may drown the victim prior to completing the rescue. Water also adds weight to an already-damaged structure, which may cause additional collapse. It may be necessary to move large volumes of wet concrete in order to locate the victim. It also may be possible to use a trash/solids pump to move dilute concrete out of a basement if the aggregate size is small enough to make it through the pump without clogging it. A bathtub collapse into a crawl space is generally similar to a collapse into a basement, but may allow grade-level access to one or more sides of the bathtub.

Victim Extrication

Once the victim is located, determine the body position and attempt to expose the airway. If the victim is alive, follow local blunt trauma and crush/compartment syndrome protocols. If the victim is deceased, ensure that all other potential victims are accounted for. If other victims are not accounted for, it will likely be necessary to continue in Rescue mode. If all victims are accounted for and have been determined to have died, then shifting to Recovery mode is more appropriate.
It is likely that rebar will be submerged or semi-submerged in the concrete. Large sections of the rebar grid may be cut away with minimal effort by locating the rebar and cutting it around the outside edge of the area you desire to expose. Cut rebar grid away with hydraulic cutter or large bolt cutters if it is submerged in the wet concrete. Rebar cutters, reciprocating saws, and/or torches may be used to cut any exposed rebar, particularly if only one hydraulic cutter is present.


Hydraulic cutters being used to cut rebar


Removal of rebar grid section

To extricate the victim, it is useful to locate the Q-decking edge closest to the victim. Once this edge is located, it can be used as a purchase point to move concrete and steel away from the victim. A variety of tools and techniques may be successful. Once the Q-deck edge has been located, start moving wet concrete away from it. A good rule of thumb is to move wet concrete away from the hole at least three times the depth of the remaining concrete. This will help prevent wet concrete from running through the hole in the Q-decking and burying the now-exposed victim.

Once adequate amounts of wet concrete and rebar have been removed, it is time to attack the Q-decking. You can start by using the exposed Q-deck edge as a purchase point and lifting the edge with hydraulic rescue spreaders. As you open the spreaders, the Q-decking will start peeling back. You can extend the cuts with hydraulic spreaders or reciprocating saws. If power tools are not available, even hacksaws can be used to cut the Q-decking. Small rescue air bags may be used to lift the Q-deck, but remember that sharp rebar ends or Q-decking edges may cut or puncture the air bags. If using air bags, pad them with sections of rubber matting such as old tractor-trailer mud flap material or short sections of old large-diameter fire hose. Bottle jacks or small scissor jacks can also be used to lift the Q-decking.


Hydraulic spreader used to roll up exposed Q-decking edge

It is not necessary to remove all of the concrete from the Q-decking prior to cutting it. Additional personnel can be used to continue moving concrete away from the victim with scoop shovels. As with any other heavy lifting operation, cribbing must be installed to support the lift. Use the “Lift an inch, crib an inch” cribbing method. It may be possible to use a come-along to support rebar grid sections that are too large for complete removal.

If it is becomes necessary to remove very large sections of Q-decking or other metal components, several cutting methods may be employed simultaneously. These can include alternating hydraulic spreader lifts with hydraulic cutter relief cuts, lifting with a spreader while extending the cut with reciprocating saws, or by removing concrete and steel in an area away from the victim in order to create an intermediate location in which to move materials away from the victim. If using torches, make sure that you do not burn the victim. If using torches remotely from the victim, use an atmospheric monitor near the victim to ensure that torch byproducts are not compromising the victim’s clean air supply.

If it is possible to quickly move a large amount of wet concrete out of the bathtub, consider making purchase points with a hole saw or core drill, inserting short sections of heavy-duty rebar or pickets, and attaching cables in order to lift a large section of steel away.

Prior to removing most of the wet concrete, air chisels and reciprocating saws will be of very little use, since they are designed to use in open air. Pneumatics may have limited utility, but electric tools will quickly burn out and become useless when submerged in wet concrete, due to the saw’s inability to radiate heat into the air.

If the victim is pinned over a secondary void, install supplemental shoring beneath the victim if possible. It may be necessary to install an improvised lifting harness on the victim if a secondary fall possibility is created by the extrication process. If the secondary void is very deep, it may be necessary to have rescuers shore beneath the extrication operation. This is highly dangerous, and is recommended ONLY as a last resort and with IC and Safety Officer approval.

Patient Care

As with any other extrication, provide medical care during the extrication if the victim is alive. If the extrication is prolonged, it will be necessary to provide protection from ambient temperature, extremes of weather, and to provide specialized crush syndrome care. USAR Medical Specialists and paramedics and physicians specializing in cave or mine rescue may be very useful in this situation. USAR medicine may require medications and medical protocols outside of normal EMS procedures. USAR medicine protocols should be approved by local and/or state EMS authorities in advance. It may be necessary to conduct a field amputation in order to save the victim’s life. If possible, a field-qualified physician should make the amputation, as amputations require training and equipment outside the normal paramedic scope of practice.

Once the victim is completely disentangled, package the victim, take any required steps to move the victim outside the structure, and turn the victim over to the transporting unit. All rescuers working near the victim should wear any necessary body substance isolation (BSI) personal protective clothing. If advanced life support (ALS) procedures are in use, EMS personnel should have a sharps container at the patient’s side for IV needles other contaminated sharps disposal.

Third-Party Investigations

If one or more victims are deceased, a scene investigation will be necessary prior to moving the body. The coroner, medical examiner, and/or law enforcement agencies will want to photograph and diagram the scene, interview witnesses, and determine whether any foul play is suspected. If the coroner or medical examiner staff is not trained to enter collapse zones, they may ask that rescuers take scene photos and/or measurements for them. If possible, put the coroner in a location where he/she can direct the rescuers as they take photos and measurements, but do not compromise responder safety to investigate a death.

OSHA investigators may also be on the scene. It is important to note that OSHA investigators do not generally have the authority to interfere with body recoveries, and they do not have the authority to interfere with the rescue of live patients. Fire-rescue and EMS personnel should document any actions they take on behalf of an investigating authority.

It is also important to inform coroner, medical examiner, law enforcement, and OSHA investigators that time is of the essence due to concrete curing. If the concrete hardens with the victim’s body still entrapped, a one or two-hour recovery may become a multi-hour or multi-day recovery operation. Once the body is removed, place it in a body bag, secure it in a Stokes basket, SKED, or other rescue litter, and remove the body from the collapse zone.

Decontamination and Clean-Up

USAR decontamination considerations generally involve cleaning equipment and PPE that may have been exposed to biohazardous wastes and cleaning concrete dust, powdered glass, or other building components from personnel and equipment. Bathtub collapses require an immediate additional step.

Several charged hoselines should be present to remove concrete from responders and equipment while it is still wet. This is particularly true for exposed skin and any tool that was submerged in the wet concrete. Exposed skin is vulnerable to thermal burns from the warm concrete, chemical burns from concrete components, and traumatic injury from rough aggregate or sharp metal edges encountered during the rescue. Concrete will find every nook and cranny in hydraulic rescue tools, bottle jacks, pneumatic hose couplings, pneumatic strut feet, or any other equipment that may have been placed in the concrete. Two or three engine companies assigned exclusively to decon will enable responders and gear to be cleaned quickly, efficiently, and thoroughly.

Termination

As with any other incident, all tools, equipment, and apparatus will need to be returned to service, cleaned, and inspected. Any equipment damaged, destroyed, or contaminated beyond salvage will need to be reported and replaced. Powered equipment will need to be serviced and fueled. It may be necessary to replace large quantities of cribbing and shoring materials, contaminated life safety rope, or other materials that it is unsafe to recover. Do not risk personnel to recover a few pieces of wood that can be easily and cheaply replaced.
Any personnel injury or exposure will need to be treated, reported, and receive any necessary follow-up care. An accurate incident report should be completed, anticipating third-party investigations and possibly criminal or civil actions due to the collapse. An after-action review should be held as soon as all the incident facts can be determined. The critique should involve all personnel and units that participated in the response.

Conclusion

Bathtub collapses have not been previously identified and traditional USAR training does not specifically address collapses involving wet concrete. Wet concrete is not easy to shore or support. Wet concrete adds a new degree of difficulty to USAR searches, as you can’t just drill a hole and look through it with a search camera or fiber optic scope. Wet concrete flows to the lowest point and collects, which can concentrate structural weight in a small portion of the supporting structure. Bathtub collapses add an entirely new set of challenges, even for well-trained and experienced USAR teams. One of the most critical elements is time – the concrete won’t stop hardening while we call resources, shore the structure, or search for the victims.

Concrete buildings may be constructed virtually anywhere. All concrete structures are vulnerable to collapse while under construction. With the increasing demand for structures to house people, businesses, and to repair our country’s aging infrastructure, it is anticipated that bathtub collapses will become more common. Any fire-rescue and EMS agency may be faced with a bathtub collapse. Preparation, safety, equipment, training, and above all, anticipation are important to keep responders safe and to successfully conclude the response to complex and dangerous bathtub collapses.

References

(1) U.S. Army Corps of Engineers
US&R Structures Specialist Field Operations Guide, 3rd Ed.
U.S. Army Corps of Engineers Readiness Support Center, 2001, pp IV-42 – IV-48
(2) Goodson, Carl, et al
IFSTA Essentials of Firefighting, 5th Ed.
IFSTA, Stillwater, OK, p 364

All photos courtesy of Hilton Head Island Fire & Rescue

About the Authors
Ben Waller is a Battalion Chief with Hilton Head Island Fire & Rescue, currently assigned as the Training Chief. Ben is a paramedic, a hazardous materials technician, and a USAR rescue specialist. He is Safety Officer for South Carolina USAR Regional Response Team 4 and is an adjunct faculty instructor in the fire, rescue, and incident command programs at the South Carolina Fire Academy. He is a member of the South Carolina Fire Academy’s Rope Rescue and Water Rescue Technical Development Committees. Ben’s education includes a Master’s of Public Administration degree and undergraduate Fire Administration and Paramedic/Allied Health degrees.

Jason Walters is a Lieutenant with Hilton Head Island Fire & Rescue, currently assigned to an engine/medic company. He is a Rescue Manager with South Carolina USAR SCTF-1 and is the Team Coordinator for South Carolina USAR Regional Response Team 4. He is an EMT-B, a hazardous materials technician, and a USAR rescue specialist. Jason is an adjunct faculty instructor in the fire and rescue programs at the South Carolina Fire Academy. His education includes an Associate of Fire Science Degree from Luzerne County College. Jason has 18 years of experience in fire-rescue, EMS, and hazardous materials response. He has 34 years of experience in fire-rescue, EMS, and hazardous materials response.

The Bathtub Collapse: Part 1

This article is co-authored by my friend and colleague Jason Walters. Jason is the Team Leader for USAR SC-Regional Response Team 4.

Introduction

FEMA’s USAR system, basic firefighting texts, and other fire-rescue references describe how to recognize and respond to a variety of structural collapse situations. These collapse types are specific to structures with rigid components. Freshly-poured concrete isn’t rigid, and collapses involving wet concrete create a unique set of circumstances not described in typical structural collapse references.

Collapses have traditionally been classified in four categories. These are the Lean-To Collapse, the V - Collapse, the Pancake Collapse and the Cantilever Collapse.(1) Some USAR documents now describe an additional collapse type – the A-Frame Collapse.(2, 3) The A-Frame Collapse is also known as a Tent Collapse. An A-Frame Collapse is essentially two back-to-back Lean-To collapses that share a common wall or other upright structural component.

There is another collapse type that has recently been identified. This collapse type involves concrete that is still wet. We call it the Bathtub Collapse. Unlike cured concrete, wet concrete does is not solid and when freshly poured, it does not form slabs and or give off dust. Wet concrete runs to the lowest point available, then collects like water in a bathtub. Bathtub collapses have some things in common with other collapse types, but there are several significant differences. The most important are the difficulty in stabilizing a collapse involving wet concrete, handling concrete that does not stay in one place, and the relatively short time it takes for the wet concrete to harden.



Typical Bathtub Collapse

Concrete Weight

Wet concrete is slightly heavier than a corresponding volume of dry concrete. When concrete cures, some of the water evaporates, but much of the water stays in the concrete. Water binds chemically to the solids in the concrete, and thus concrete retains much of the water weight when it cures. Concrete loses some weight as it cures, but surprisingly, that weight loss is relatively small.

The rule of thumb for the weight of a cubic foot of wet concrete with aggregate mix is 4000 lbs/yard3, or approximately 162 lbs/ft.3. The rule of thumb for the weight of a cubic foot of dry concrete with aggregate mix is 3700 lbs/yard3 or 150 lbs/ ft3. (4) The bottom line is that all concrete is heavy. Remember, the primary difference between wet concrete and dry concrete – wet concrete flows to the lowest point and then collects there.

A factor that construction personnel may not take into account is that once a concrete slab is poured, water, wet burlap, or other wet material is often left on the concrete surface to assist in insulating and hydrating the concrete as it cures. This water adds additional weight that may not be considered in the design of the shoring system that supports the pour. If that additional water weight is not accounted for in the shoring system, then a collapse is more likely.

Building Construction Factors

Virtually any type of building construction may be involved in a bathtub collapse. Bathtub collapses usually occur when construction personnel pour a concrete floor at an elevation above the lowest structural level. Bathtub collapses occur in one of three basic configurations. The first is when the collapse rests on the ground or on a slab at grade level. The second bathtub collapse type involves collapses above grade level. The third type is a bathtub collapse into a basement or other below-grade area. Bathtub collapses will most commonly occur at or below grade. Bathtub collapses that begin above the second floor are rare, as the collapse of an upper floor often causes a progressive pancake collapse that destroys the entire structure.
Basic bathtub collapse strategies are based on grade-level collapses. Above-grade and below-grade bathtub collapses involve the same basic strategy as a grade-level collapse, with a few additional considerations.

Construction Process Factors

The collapse of a concrete floor during or immediately after a pour may be due to one or more of the following factors:

• Inadequate shoring beneath the pour
• Wall-floor structural connector failure
• Shoring material failure
• Excessive amount of concrete poured
• Excessive pour concentration
• Failure of walls, beams, or other supporting structural materials

The Bathtub Collapse Sequence

Steel span drops with the outside edges supported, forming a rough bathtub shapeWet concrete runs to the center of the bathtub
Wet concrete runs out of small openings in the edges of the bathtub. These may be quickly blocked due to the heavy concrete viscosity or obstructions outside the bathtub. If small openings are blocked, the concrete in the bathtub will form a larger and deeper pool. This will make size up and extrication more difficult.
Concrete forms a thicker but smaller diameter puddle than the original pour
Rebar, Q-decking or other steel sheeting, and shoring materials are twisted and mixed into the wet concrete

Supporting beams and damaged overhead structural materials may create widowmakers
Supporting beams may fall into the bathtub prior to or during the rescue operation

Size-Up and Strategy

Size-up should be completed in accordance with standard structural collapse protocols. This should include the situation, potential entrapment problems, specific hazards, and a 360-degree look at the structure. When possible, include an elevated look at the collapse. An aerial ladder or nearby building may be used as an elevated observation post. When size-up is complete, Command should develop the Incident Action Plan (IAP) goals, communicate the IAP to all responders, make tactical assignments, and ensure that the personnel accountability system is fully implemented.

Important strategy considerations include:

Define the building factors including construction type
Identify the most likely victim locations
Develop and communicate the IAP
Safety considerations
Shoring
Remove easily accessible victims
Make the rescue vs. recovery decision
Estimate the concrete cure time
Wet concrete removal methods

Bathtub Collapse Incident Management

Command should consider appointing at least a Safety Officer, a Liaison Officer, and a Rescue Group Supervisor for even a small bathtub collapse.(5) The Safety Officer can help isolate the scene and identify the primary hazards. The Liaison Officer can work with the construction company to determine how many workers are missing or known to be entrapped. The Liaison Officer should communicate with the construction supervisor, gather information, and keep construction personnel available to assist if needed. The Rescue Group Supervisor can concentrate on rescue tactics and needs and allow the Incident Commander to keep his/her attention focused on the overall incident strategy and safety.

Resources

Structural collapses typically require more resources than may seem likely during the early incident stages. It is important to have at least one engine company for water supply, one truck company for tools and an aerial device, a heavy rescue or USAR unit for tools and shoring materials, and additional manpower. A large law enforcement presence may be required to keep bystanders, construction personnel, or distraught relatives out of the collapsed structure. Additional construction personnel and heavy equipment such as cranes, front-end loaders, and other machinery may be useful in the rescue effort. If in doubt, call for additional resources early and often. Structural collapse rescue is hard work, and personnel may quickly become exhausted, especially in extremes of temperature and/or
precipitation.

Safety Considerations

One of the first priorities is to assign an Incident Safety Officer. This should be an officer who has a good basic knowledge of building construction, collapse types, USAR strategy and tactics, and common USAR safety problems. The Safety Officer should ensure that a safety zone is established. Collapse zones should be established to exclude responders from areas exposed to potential secondary collapse, particularly in areas beneath widowmakers. The Safety Officer should ensure that building utilities are shut down. Construction company generators and other power supplies should be shut down to reduce electrical hazards and atmospheric contaminants. Construction personnel should be kept on standby, as their generators may be useful power sources later in the incident.



Assessing the outside of the bathtub

The Safety Officer

A Safety Officer should be appointed early in the response. The Safety Officer should don the appropriate PPE and the Safety command vest. Once search and rescue operations begin, the Safety Officer should be located at an elevated observation point, if possible. Observing from an elevation gives the Safety Officer the ability to observe conditions in the bathtub as well as the condition of supporting walls, columns, and the stability of the surrounding structure. Most importantly, an elevated observation point gives the Safety Officer a better perspective on how rescue operations may change structural and personnel safety. For example, if wet concrete piles up against the base of a column that is already leaning, it may topple that pillar and cause an additional collapse. A properly-positioned Safety Officer will be able to anticipate this problem, advise Command, and ensure that the concrete flow is diverted prior to impinging on the damaged column.


Safety Officer’s view into the bathtub from an elevated observation point

Personal Protective Clothing

Standard USAR PPE is usually adequate for bathtub collapse operations. Lace-up safety boots are the most appropriate footwear. Wet concrete has a consistency very much like quicksand, and fire boots may be pulled off of firefighters who walk in it. Leather construction gloves, mechanics gloves, or extrication gloves are adequate for most hand protection, but medical exam gloves will be required for patient care.



Modified Turnout Gear Ensemble used for heavy cutting PPE

This concludes Part 1. Part 2 will discuss discusses tactical considerations, interior size-up, victim recovery, investigations, and incident termination.

References
(1) Goodson, Carl, et al
IFSTA Essentials of Firefighting, 5th Ed.
IFSTA, Stillwater, OK, pp 362-364

(2) English, Leslie, et al
NFPA 1670, Standard on Operations and Training for Technical Search and
Rescue, 2004 Ed.
NFPA, Batterymarch Park, MA, pp 25-27

(3) U.S. Army Corps of Engineers
US&R Structures Specialist Field Operations Guide, 3rd Ed.
U.S. Army Corps of Engineers Readiness Support Center, 2001, p VI-3

(4) http://corlissconcrete.com/Q&A.htm#4

(5) Jones, Jeff
NIMS Field Operations Guide, 1st Ed.
InforMed, Tigard, OR, pp 14-20

All photos courtesy of Hilton Head Island Fire & Rescue

What kind of foam are you?

Firefighting foam has been around for a long time. The Navy, ARFF firefighters, and the petrochemical industry have used Class B foams for decades. When used properly, foam does a good job of extinguishing fire types for which water is not an efficient extinguishing media. Foam can be used on Class A fires, Class B fires, and for hazmat vapor suppression.

Different foams have different characteristics, are applied differently, and do different things. It may surprise you, but fire officers share several of those same features and characteristics. So, let’s think about the characteristics of different foams and apply them to fire officers.

Class A Foam


Class A foams are designed for one thing – fighting structural or woodland fires where the fuels are solid and have no special hazards. Class A foam does an excellent job of sealing air away from fuels and often result in less fire damage to a structure. Class A foams are very efficient at one thing, but they are a one-trick pony. Class A foams are useful as wildland fire barricades or for direct structural fire attack. However, Class A foams don’t produce much steam, so they are very ineffective when indirect fire attack is required, as in an attic fire.

Are you a Class A fire officer? Are you very good at one thing, but very ineffective at the other dimensions that make up your job? Do you perceive your job duties as “We just fight fires”? Are you uncomfortable with any emergency that doesn’t have smoke and flame showing?

CAFS


CAFS is Class A foam that has air bubbles mechanically added at the pump so that the hoseline is pumping finished foam rather than foam solution. It makes the hoselines lightweight and easy to handle. It also makes the hoselines much easier to kink and completely shut off the foam flow than either water or Class A foam lines. Class A foam is high maintenance – it requires a compressed air pump in addition to the water pump.

Are you a CAFS officer? Are you light and frothy, without much substance? Do you seek the easy way to do things without considering that by making some things easier, you may be keeping the job from getting done at all some of the time? Do you require twice the motivation to work as other fire officers? Do you make others chase your “kinks” or otherwise add to others work because of how you do your work?

Protein-Based Foam


Protein Foams are designed for Class B liquid fires. They are old school, having been around since World War II. Protein foams are made from either animal blood and byproducts, from soybeans, or from a combination of both. They may have fluorine added to increase shelf life, but the fluorine adds environmental toxicity to the foam.

Are you a Protein-Based fire officer? Are you old school? Does something have to die to get you to work properly? Do you, like soybeans, create a lot of gas? Like flourine, are you toxic to the work environment? Do you have a long shelf life? Have you changed how you do things, but not enough despite getting the job done?

AFFF Foam


AFFF is a Class B foam that creates a vapor suppressing film between the foam bubbles and the fuel surface. It is very effective on spill fires. It is good to great at sealing flammable vapors into liquid fuel spills. The AFFF film is slick and oily. Applying other Class B foams atop AFFF usually results in the other foam sliding away due to the slickness in the AFFF. AFFF is good for suppressing polar solvent (alcohol) fires, but it requires twice as much concentration (6%) for this application as the normal (3%) application rate needed for hydrocarbon spill fires.

Are you an AFFF officer? Do you suppress anything that rises from below you? Do you do a good job, but have a slick and oily finish? Do other fire officers not mix well with you?

AR-AFFF Foam


AR-AFFF is a new foam type that is similar to the older AFFF, but with several important differences. AR-AFFF is around 50% more expensive than standard AFFF. However, it is applied at 1% to hydrocarbon spill fires and 3% to polar solvent fires, so a given quantity of AR-AFFF will suppress three times as much fire as an equal quantity of standard AFFF. This results in an actual decrease in cost-per-gallon of the foam concentrate. Typical AR-AFFF is completely biodegradable, and is manufactured without the fluorine additives common to AFFF and protein foams. That makes it a much better choice for fighting both hydrocarbon and polar solvent fires. Additionally, AR-AFFF can be mixed at 0.5% and used as Class A foam for both wildland and structural firefighting applications, making it the most flexible foam currently available?

Are you an AR-AFFF officer? Are you flexible? Can you adjust your approach to adapt to different problems and challenges? Are you friendly to your work environment instead of using effective short-term solutions that leave long-term toxicity in your environment? Are you effective in handling a variety of emergencies rather than just being good at one thing? Can you adjust your intensity and concentration to fit with changes in your work environment?

High Expansion Foam


High Expansion Foam is designed to fill up confined spaces and exclude fire. It does not perform well in exposed positions, because its high expansion ratio makes it light, fluffy, and easy to blow away in a light wind. High expansion foam applications are so limited that most public fire departments don’t even carry it. High expansion foams require special application devices. They also require a lot more effort than conventional foams in order to be effective.

Are you a High Expansion officer? Do you require special treatment to be effective? Does it require additional effort by someone else to make you get the job done? Are you light and fluffy, without substance, and easily blown away by the winds of change? Are you comfortable only within narrowly-defined limits?


Hazmat Foam (vapor suppression foams)


Hazmat Foams are designed to suppress vapors from liquid hazmat spills. They are usually not effective for firefighting in Class A, Class B, or polar solvent fires. They are very, very good for one thing – preventing vapors from rising up from below. In this respect, hazmat foams are even more specialized and limited than is traditional AFFF. Hazmat foams are very effective not only at keeping vapors from entering the environment, but they are effective at keeping the environment out of the hazmat spill.

Are you a Hazmat Foam officer? Are you useless at firefighting? Do you suppress the idea vapors rising from your subordinates into the general environment? Do you work harder at keeping the environment out of your firehouse than you work at being an effective leader?

In conclusion, all firefighting and hazmat foams have their place. Good fire departments have access to all kinds of foam in order to handle a variety of fire and hazmat incidents with the best possible solution. However, not all “Foam Officer” types are good for either the fire department or for the firefighters. The best fire officers have AR-AFFF characteristics; they are flexible, they are good for several different problem types, they can suppress problems when needed, they are cost-effective, and while seeming more expensive on the surface, they actually save the department time, money, and effort in the long run.

And remember, even good fire officers, like good foam blankets are not perfect. Sometimes problems break through the fire officer's ability to handle them, just as the fire can break through the foam blanket.

Last Thoughts from 2009 and Hopes for 2010

It is traditional to spend the last week of the year reflecting upon the past year's events and in anticipating the new year. It has indeed been an eventful year. Major fires, mass casualty incidents, new EMS standards, and political changes that affect Fire-Rescue and EMS services have all been in the news. The tragic loss of fellow firefighters and medics has once again been in the headlines. The 800-pound gorilla in the news has been the continuing problems with the national economy, diminished local tax revenues, and the reduction in services that have been forced upon many cities, towns, and counties.

No fire chief or EMS director wants to close stations, disband companies, furlough firefighters or medics, cut staff and/or benefits, or conduct unit brownouts. All of these have been forced on unwilling leaders, generally under protest. In some cases, companies with over a century of tradition have been disbanded.

Cutbacks of this magnitude have only occurred two other times in the past century. The event that caused the first set of cutbacks was the transition from horsedrawn apparatus to motorized apparatus in the early 1900s. Prior to that time, the edges of a company's first-due area was set by the stamina of the horses that pulled the appratus. With equine stamina no longer being a factor, firehouses could be located farther apart, so many companies were disbanded.

The second time this occurred was in the "War Years" that coincided with economic downturn from the late 1960's through the 1970's. Despite urban fire companies running calls in record numbers, fire companies were disbanded, stations closed, and firefighters were laid off. This was the first time that many fire departments realized that they had to position themselves to withstand downturns in the economy. Some responded with innovation, master planning, and other proactive solutions, but many departments remained reactive.

Beginning in the 1970's, the fire service began going through paradigm changes with each paradigm change taking roughly a decade to become widely accepted. The 1970's were the decade of EMS. EMS was a new concept back then, but many fire departments welcomed and embraced it. The Los Angeles area was notable in this respect, as anyone who ever watched an episode of Emergency! will remember. A new job description - that of Paramedic - became part of our vocabulary.

The 1980's were the decade of Hazardous Materials response. Based on several high-profile hazmat incidents in the late 1970's, Hazmat became a key issue for both fire departments and the communities they served. Another new job description - that of Hazardous Materials Technician entered our vocabulary.

The 1990's were the decade of Technical Rescue. Standardized, innovative extrication practices were invented by firefighters who became famous by the way they taught others how to rapidly and safely cut patients free from the wreckage of their vehicles. The Urban Search and Rescue system was expanded and received its first major domestic test at the Oklahoma City bombing incident. Rescue training became a major focus. Other new job descriptions, those of Extrication Technican and Technical Rescue Technician became common.

The first decade of the new century, unfortunately, became the decade of Terrorism. Although the U.S was hit with several terrorist attacks in the 1990s, and foreign terrorism had been common for many years, the 9/11/01 terrorist attacks were a watershed event in our lives, much as the Pearl Harbor attack on 12/07/41 was the watershed event in our parents' lives. Other than the 1993 World Trade Center bombing, the other terrorist incidents were conducted by only four domestic terrorists - the Unabomber, the Murrah Building bomber and one accomplice, and the mislabeled Army of God bomber. The 9/11 attacks led to widespread training for response to terrorist events. Firefighters and medics had to start considering terrorism as a potential cause for otherwise innocuous incidents, and learned terms like "nerve agent", "WMD", "WMD Technician", and "USAR Rescue Specialist" entered our vocabulary.

2009 was a momentous year for my department. After over a decade of planning, budgeting, and lobbying, we were able to build a training center. That may not sound like a big deal to some of you, but when your department covers a barrier island surrounded by water, having a place to train is indeed big news. The training center allows us to conduct training in ways that are impossible to replicate in a parking lot or at a fire station. I lived the dual blessing and curse of being the project manager for the training center construction while simultaneously maintaining all of the other Chief of Training responsibilities. That was stressful and challenging, but it also allowed me to add features that might not have otherwise made it into the design. It also allowed me to work closely with other division heads and to strenghten working relationships with my colleagues.

Local revenue downturns led to a year with no pay raises for any of our municipal employees. My department was regretfully and regretably forced to return a SAFER grant award of almost a million dollars to FEMA and to forgo the truck company start-up for which the grant was awarded. Our municipality simply could not raise the required matching funds without cutting other essential services, so we chose to maintain what we had as the least of a range of bad choices.

There was more good news, for us, though. We were able to purchase a standardized pumper fleet for the first time in department history. We also standardized hose loads, nozzles, and initial company operations for all of our engine companies for the first time in our history. We were also able to standardize our nozzle complements and pump operations, also for the first time. Our capital improvements budget was scheduled for two fire station replacements. One of these was delayed, but we have a badly-needed station replacement under construction. Our department became the first in our state to join the CARES registry that tracks cardiac arrest survival to hospital discharge. We also began a STEMI program with local hospitals and two neighboring EMS systems, with two of our officers coordinating these programs and implemented a department-wide electronic patient care reporting system. We also implemented an new SOG and policy system, obtained new turnout gear, and implemented new extrication tools.

2009 was a year of milestones for several of our members. Five of our officers serve on state and national fire service committees. Battalion Chief Mick Mayers became the latest of several of our past and current chief officers to complete the prestigious Executive Fire Officer program at the National fire academy. Four of our officers authored or co-authored fire service training books, field guides, and blogs. Despite some setbacks, 2009 was a successful year for us by any standard.

What will 2010 hold? For my department, we now have to operate the new training center, complete the new fire station project, and hopefully manage the construction of the station that was delayed from 2009. We will be receiving two new quints and training all of our personnel to operate them. The training center will be a busy place.

Nationally, the next decade will be the decade of Interoperability. We are used to "doing our own thing", but with the increasing needs for EMS involvement in fireground and hazmat rehab, the increasing involvement of police departments in force protection and Unified Command, and the continuing ways in which MCI and disaster management continue to involve, interoperability will become increasingly important. This involves the planning and technology necessary to complete the nationwide radio rebanding project, the ability to involve fire, EMS, and law enforcement in joint operations and training, and losing the attitude that we operate in a vacuum, because we don't.

We need to continue to preach - and practice the 16 Firefighter Life Safety Initiatives.

We need to continue to make training and operations safer.

We need to focus on getting safely to the scene - every time.

We need to focus on being healthy and fit to do the job.

We need to focus on planning and innovation to survive a continued sluggish economy.

We need to take care of our own and work to maintain what we have.

We need to be honest with our elected officials and citizens - cutbacks can and do hurt our ability to provide services.

We need to realize that operating "the way we've always done it" will result in Russian Roulette at best, and suicide at worst.

We need to be smart enough to stay out of Born Losers.

We need to conduct realistic Master Planning.

We need to educate the public - CPR classes, First Aid classes, car seat installations, Risk Watch programs, and Fire Prevention classes can and do save lives.

Last, but not least, we need to get make our departments missionaries for residential sprinkler programs and the new building code that requires their installation on new construction. It's past time that we use our influence at the state and national level to overcome the contruction industry's misperception that saving a few cents per square foot on new home construction is worth someone's life.

The departments that plan, adapt, innovate, and market themselves will flourish. The ones that do not will become anachronisms, consigned to a never-ending vicious cycle of manpower cuts, station closures, brownouts, and budget cuts.

After all, an ounce of prevention is worth a pound of cure.

Have a Happy and Safe 2010, everyone.

7-Sided Searches and UCAN

Some recent calls, drills, and follow-up conversations in which I was a participant have brought out how well a couple of basic tactics can be adapted for multiple purposes.

The first is the 7-Sided Search.

7-Sided Searches should be conducted on every incident in which we have a potential victim.
The seven sides to be searched are:

Structures

1. Side A/Division A
2. Side B/Division B
3. Side C/Division C
4. Side D/Division D
5. Roof
6. Basement/Crawl Space
7. the Inside (including the Inside of each interior compartment)

Vehicles

1. Front
2. Driver's Side
3. Passenger Side
4. Rear
5. Top
6. Underneath the Vehicle
7. the Inside, including the passenger compartment, trunk, and hatchback areas

The rule for searching these is:

7-Sided Search

• Every Vehicle



• Every Structure



• Every Time

The other helpful tactic is the UCAN mneumonic. Originally developed for MAYDAY applications, UCAN has applications to basic search tactics. UCAN was designed for a firefighter giving a MAYDAY report to COMMAND the following information;

• Unit



• Conditions



• Actions
  


• Needs

The MAYDAY firefighter should tell COMMAND the unit to which he/she is assigned, the conditions that required calling a MAYDAY, what actions the lost/trapped/disoriented firefighter is taking, and what the lost/trapped/disoriented firefighter needs.

These same four considerations work well when a search team moves through a building, particuarly when moving vertically.

For example, Truck 3 is assigned to conduct a primary search of Divisions 3 and 4 of an apartment building with a fire on Division 2. Truck 3 should give COMMAND a UCAN update each time they move one vertical floor upwards. An example:

"COMMAND, Truck 3"

"Truck 3"

"COMMAND, Truck 3 is on Division 3, we have a heavy smoke condition with moderate heat, no fire visible, we are starting our primary search, and we need ventilation support and secondary egress."

"Truck 3, COMMAND recieves that you are on Division 3, you have a heavy smoke condition with moderate heat and no visible fire, and that you need ventilation support and secondary egress. Repeat your Actions report."

"COMMAND, Truck 3, we are starting our primary search of Division 3."

"Truck 3, recieved, you are starting your primary search of Division 3."

There are five distinct advantages to using UCAN reports for reporting tactical movement through a fire building in the absence of a MAYDAY.

• Firefighters become familiar with the UCAN methodology in routine situations and will not struggle to remember the mneumonic in the event they need to call a MAYDAY in the future


• Firefighters become practiced at using the UCAN terminology and reporting location changes to COMMAND


• COMMAND knows where the units are and what they are doing


• Status changes are reported in a standard forma


• Status reports are transmitted in a standard format. If one part is missed, COMMAND can just ask for the missing piece of information without wasting the air time for a complete UCAN rehash from the unit giving the report

The "A" step can be modified to include "AIR" levels. If a company has a member that is low on air, the company can give a UCAN report that includes the air reading for the member with the lowest air level, particularly in big-box structures where the company needs to exit with 2/3 of their air available.

Candlemoth Syndrome

How many firefighters have ever experienced Candlemoth Syndrome? I know I have, particularly when I was younger and less experienced. Candlemoth Syndrome is a firefighting cousin of Target Fixation, where firefighters are drawn closely to the fire in disregard for proper firefighting tactics and for firefighter safety.

The definition of "Moth to a Flame" is to be "Irresistibly and dangerously attracted to something or someone." The term relates to moth behavior around open candle flames at night. Moths are drawn to the light given off by the flame, but they often get too close, resulting in badly burned or dead moths. Firefighters can indeed be irresistably and dangerously attracted to be in close proximity to a fire. Candlemoth Syndrome is dangerous, it can easily result in firefighter injury or death, and it is all-too-common. Candlemoth Syndrome is generally avoidable if you recognize the symptoms.

Candlemoth Syndrome includes the following:

1) Waiting to attack interior fires until the hose team is very close to the fire in situations where the water stream could be used to safely and effectively attack the fire from farther away.

An example is using a direct attack with a solid stream or straight stream from very close to the fire instead of extinguishing the base of the fire from farther away where the firefighters are less exposed to the heat. This also gives the firefighters more direct access to their escape route if something goes wrong during the attack.

2) Conducting Defensive attacks in structures where Offensive attacks are indicated.

There are two examples of this. The most common is Horizontal Candlemoth Syndrome; the nozzleman who runs directly to a window venting fire and attacks the fire head-on from close range from the exterior. This will usually drive the fire into uninvolved parts of the building, cut off escape routes for the occupants, and increase the amount of unnecessary fire damage to the structure. The other example is Vertical Candlemoth Syndrome, where ladder pipe streams are directed into vertical ventilation openings. This results in the fire being driven downward into uninvolved parts of the structure, with the same potential bad outcomes as the horizontal example.

3) Defensive Candlemoth Syndrome is a variation of Horizontal Candlemoth Syndrome. This occurs when a fire has been declared Defensive and firefighters push too close to a building that is either in danger of collapsing or that is a No Value building, or both.

Focusing strategy and tactics on the RECEO-VS system, maintaining personnel accountability, and having Division C and Incident Safety Officers on scene to maintain a 360 view of the fireground help prevent Candlemoth Syndrome.

Good company officers who practice organizational discipline, who monitor their personnel closely during firefights, and who are not afraid to use firefighting best practices can prevent Candlemoth Syndrome, keep their firefighters safer, and reduce the amount of antacids ingested by chief officers.

Brotherhood versus Enemies

If there are concepts that are polar opposites, Brothers and Enemies are great examples.Brotherhood means treating the people whom you call "brother" as if they were indeed blood relatives.Practicing the concept can sometimes be a little tricker, as brothers sometimes engage in family fights.

I have three brothers, and when growing up, I often lost fights to both the two older ones, who were bigger and more powerful, and a younger one, who was sneakier and not afraid to fight dirty. Let someone else pick on me though, and my brothers would turn on them in a split second.

Firefighting brotherhood is supposed to be like that, even when we disagree. Usually it is, but some firefighters bandy the word "brotherhood" about without having the slightest idea of how to practice the concept. When firefighters have a disagreement and one proclaims the others are his "enemies" over a disagreement, that firefighter intentionally sets himself outside of the brotherhood.

When I made mistakes, my two older brothers tried to straighten me out by discussing the situation and suggesting ways that I could improve upon my actions. A lot of the time, I listened to reason and found that my older, more experienced brothers were indeed right. Sometimes I didn't listen, and found that my brothers became more pointed in their advice; sometimes to the point of directly intervening if my actions would result in harm to myself or to others. Sometimes even that wasn't enough, and I ended up in the hospital getting sutures or other medical care.

The cuts and bruises were sometimes the only way I learned my lesson, but my brothers never let me do anything that would cause really serious injury to me or to anyone else.On the other hand, I wasn't stupid enough to declare myself as an "enemy" to my brothers, because my brothers simply meant too much to me.

My firefighting brothers and sisters are like that. Sometimes we disagree, and sometimes the more senior members give counsel to the younger, less experienced members as well as having discussions among ourselves as to which ways are the best to do things. We don't run around calling each other "enemies" if we expect our brothers to treat us like family, or if we plan to be accepted as a brother or sister, or if we engage in behavior characteristic more like a declared enemy than like a brother.

And...if we declare war against our brothers and sisters, we no longer can claim to be a part of the "brotherhood". If we declare that other firefighters are "the enemy" or "the problem" in a public place, then retract it and run away, we don't have the right to claim "brotherhood" with other firefighters. Part of being a brother is to share common danger with each other's help. That action is not chacteristic of enemies.

Running away in the face of danger or disagreement isn't brotherhood. It's symptomatic of feeling guilty about something."And they shall fall one upon another, as it were before a sword, when none pursueth..." Leviticus 26:37

One of the best things about the firefighting brotherhood is the strong bonds of friendship that results from sticking together in the face of danger; we unite against a common enemy. Friends are important in this business. "Friends come and go, but enemies accumulate." Al Brunacini

Brotherhood means being careful of what you say about each other. Enemies are under no such compunction. "An enemy generally says what he wishes." Thomas Jefferson

It's good to have a lot of friends, and few - or no - enemies.

"He who has a thousand friends has not a friend to spare, and he who has one enemy will meet him everywhere." Ralph Waldo Emerson

Friends are most important, particularly in the face of someone who declares himself to be an enemy, then conducts attack after attack. Friends help defeat those attacks, and eventually the one who has declared himself to be an enemy will turn tail and run...often becoming anonymous and hiding in an attempt to deflect further attention. I'm proud to be called an enemy by someone who doesn't understand brotherhood and I'm proud of my brothers and sisters who stood by me in an attempt to show someone who labeled me an enemy the error of his ways.

As Winston Churchill once said "You have enemies; Good, that means that you have stood up for something..." I try to stand up for firefighter safety, being smart about firefighting and fire training, and for speaking out when I see things that I don't think are right. I'm extremely appreciative of those firefighters who understand brotherhood and who practice it rather than a vain attempt to grasp it by talking about it without understanding it.

I'm also very appreciative of a senior member of my department who is a member of the NFPA 1403 Committee, and who is not bashful about practicing brotherhood by dispensing good advice when I need it, whether or not I ask for it.

As for declared enemies, they fall into a special category; a category defined by Saul Alinsky when he said "Last guys don't finish nice."