A carbon dioxide-based extinguisher is used for this type of fire. Is your home or workplace protected by the correct class of fire extinguisher? This means we’ll need one that can put out grease fires. They are cheap, and can be purchased for as little as £7 for a one-metre square blanket. Class A fires are ones with ordinary combustible materials, such as wood, paper, rubber, cloths, and even plastics. IFSEC Global | Security and Fire News and Resources, IFSEC Global Influencers in Security & Fire, how to use a fire extinguisher safely and effectively, Fire extinguishers: your legal obligations, Euralarm releases guidance document on gaseous systems, Fires caused by electrical equipment (indicated by an. Halon is a liquefied, compressed gas that stops the spread of fire by chemically disrupting combustion and does not leave a residue upon evaporation. Amerex B417T 2.5 Lbs. Water extinguishers are the easiest to maintain variety and the least hazardous, since they only contain water. Certain types of extinguishers may be used on more than just Class A, such as the multi-purpose dry chemical extinguisher, while others are only ever classified as A, such as the water extinguisher. Thanks for providing a diagram of the different extinguishers and where to use them. Class ABC: Multipurpose. A water extinguisher might not put out oil fires in the kitchen, so I’ll probably consult a professional to help me decide. You should find wet chemical extinguishers and their yellow labels in kitchens with deep fat fryers. Simply remember the acronym PASS; Pull the pin, Aim the nozzle, Squeeze the lever, and Sweep from side to side aiming at the base of the fire. If it is in the food prep area for example and it is to cover the small switch board, then you would use an CO2 3.5kg in size. […] the document specifically covers gaseous fire extinguishing systems only, the content may also be applicable to other fire extinguishing or fire prevention […]. However, they’re sometimes left empty or misused and have a limited effect as they can’t used on large fires. Additional fire extinguisher uses are detailed below. Maybe a few months old, but posting nonetheless Fire Tech for last 11 years. Plus, I think it can instill a lot of confidence in individuals when a fire does happen which can help them to take action and fix the problem. Class B: Burning liquids, such as petroleum, oil, or grease. And it… Read more ». These contain only pressurised carbon dioxide gas and therefore leave no residue. Far too few individuals are aware that fire extinguisher not only come in many types but in specific classes as well, which are intended to indicate the types of fires for which they are effective. Halon 1211 is used only in portable extinguishers and is a streaming agent. Nevertheless, the following technique can serve as a refresher for those who have undertaken training or if someone without training ever needs to use one in order to improve the chances that everyone escapes unharmed. CO2 works by suffocating the fire and does not cause damage to the electrical items or cause the system to short circuit. class k (purple class) fire extinguisher is the only thing which is proffered for kitchen fires. On the downside, their placing is crucial, since they could be set off erroneously when the ambient temperature reaches the trigger level. These can be divided into six categories of fire involving different substances: In the UK, portable fire extinguishers must conform to BS EN3 Standard, which specifies that their body is coloured red. Fire extinguishers come in two types: rechargeable and disposable. Experts recommend storing at least one fire extinguisher on each floor of your home, with one being placed close to the living areas. These are made to put out ordinary combustibles, such as paper, wood, and plastics. They can asphyxiate in confined spaces, and they are not suitable for deep fat fryers, as the strong jet from the extinguisher can carry the burning fat out of the fryer. They must not be used with water on burning fat or oil or on electrical appliances. However, the type of material inside the cannister plays a bigger role in determining the cost. Their use is advisable, but is not a legal requirement in ordinary cars. hbspt.cta._relativeUrls=true;hbspt.cta.load(1973249, '4802da5e-d34f-4d72-8f6e-0b5fee00609a', {}); First, it is best to know what a Class A fire is to understand better what the Class A fire extinguisher is intended to do. This extinguishes the flames, absorbing heat from burning objects. Types of Halon fire extinguisher. Use a Class B extinguisher when the fire’s fuel source is a combustible gas or liquid such as gasoline, ethanol or propane. It runs on a 9-volt battery and keeps track of the extinguisher's pressure. A 2kg model costs around £33, while a 5kg model, suitable for server rooms and factories, costs from £65. is there any difference between F and K class? The first fire extinguisher was patented by chemist Ambrose Godfrey in 1723. The easiest way to remember a Class A material is that is leaves an ash when it burns. IFSEC Global is operated by a business or businesses owned by Informa PLC and all copyright resides with them. The newest type of extinguisher. Cherry, I didn’t know that water extinguishers are the easiest to maintain and the most likely to be found around in schools and shops. The following table provides information regarding the type of fire and which fire extinguisher … NOT a powder of any type or water. Class C: Electrical fires, such as motors or extension cords. Class B fire extinguishers However, CO2 extinguishers get very cold during discharge, and those that are not fitted with double-lined, frost-free swivel horns may cause fingers to freeze to the horn during deployment. So, which types are typically rated for Class A fires? It seems like there are a lot of things that this one does not put out. The powder is hazardous if inhaled, so they should be used in well-ventilated areas and are not suitable for offices and domestic premises. These are the only extinguishers apart from water mist suitable for Class F fires (fats and cooking oils) and are mainly used in kitchens with deep fat fryers. The exact area and types of devices or products need to be considered. What is a Class A Fire Extinguisher Used For? The higher the number, the more fire-fighting power. This extinguisher takes away the heat of the fire only. Using a wrong fire extinguisher at best could prove ineffective, and at worst, could spread the fire or hazard (such as if a water extinguisher is applied to an oil fire or electrocute you if it is used on an electrical fire). It could be really nice for them to get a recharging station for them so that it is more helpful. Water (Loaded Stream) Water is a very common type of extinguishing agent that puts out a fire by separating the oxygen source (air) from the fuel source (burning material) and it also helps to take heat away from the fire. Advantages include easy recharging and lack of constant monitoring, and removal of the need for manual operation in unmanned areas. They are the simplest types of fires and involve regular materials most commonly found in homes and offices. Often found in homes and businesses For use with combustible and flammable liquids like grease, gasoline, oil and oil-based paints. They work by cooling the fire and reducing the oxygen supply. It is believed to be reliable, but Koorsen Fire & Security assumes no responsibility or liability for any errors or omissions in the content of this article. Fire Protection, Fire Extinguisher, The three most common types of fire extinguishers are: air pressurized water, CO 2 (carbon dioxide), and dry chemical. Types and materials. technique: P. Pull the pin on the fire extinguisher in order to break the tamper seal. Automatic fire extinguishers are designed to combat fires in transport, such as in the engine compartments of boats or large vehicles, or in industrial use, such as in generator or computer rooms. It was helpful when you said that CO2 extinguishers are a good option for office buildings because they’re capable of handling electrical fires without leaving any residue. Meaning, it goes everywhere!! Read more fire safety news, features and guides. In order to be covered on all fronts, is it best to have multiple different kinds on hand? What is a Post Indicator Valve (PIV) and Are They Required? Buy on Amazon. If you need Class A fire extinguishers or are unsure of which class and type that would be best suited to your needs, call the experts at Koorsen today. These very powerful, but smaller, devices exude an ultra-fine mist of microscopic ‘dry’ demineralised water particles. Made of fibreglass, they can withstand temperatures of up to 500° C and are compact and portable. Prices of hose reels start at around £100 and vary widely depending on size and mounting. Identifying Fire Extinguisher Types and Classes. Underwriters Laboratories (UL) uses letters to denote the type of fires the extinguisher is capable of fighting, and numbers to refer to the fire fighting “capacity” relative to other extinguishers. Carbon Dioxide Fire Extinguisher. Small … Buyers Guide — What Kind of Fire Extinguisher for Kitchen Fits My Needs? As noted above, there are many different types of extinguishers on the market. It is these types of fires that Class A fire extinguishers are effective for putting out. However, they leave a residue that has to be cleaned up, and they are more expensive than water extinguishers, at around £25 for 1 litre and £55 for 9 litres. Fire Extinguisher Types. Home fire extinguishers come in three different types – A, B, or C. Each type is effective against different types of fires. Carbon Dioxide ExtinguisherBlack. Number 8860726. Disposable extinguishers must be replaced after the pin has been pulled. Multipurpose Dry Chemical: Multipurpose dry chemical fire extinguishers are effective for Class A fires, as well as Classes B and C. The agent in these types interrupts the chemical reaction in the Fire Triangle (fuel, oxygen, heat plus a chemical reaction) to extinguish a Class A fire. Approximate prices given below include VAT. Extinguishers with a D rating are designed to extinguish fires involving combustible metals.Note: Common extinguishing agents may react with a combustible metal fire causing the severity of the fire to increase. For use with ordinary materials like cloth, wood and paper. What size is the handiest for a fire extinguisher for the kitchen? Fire extinguishers have always been the simplest and most recognizable form of fire suppression. The higher the number, the more effective that particular fire extinguisher is against that type of fire. Each fire extinguisher also has a numerical rating that serves as a guide for the amount of fire the extinguisher can handle. A dry chemical-based extinguisher is used for this type of fire. Size and weight are two connected parameters to describe the fire extinguisher. A carbon dioxide fire extinguisher (CO2) is one of … They work by the powder forming a crust which smothers the fire and stops it from spreading. De pends of the country or region? A 1kg model can cost as little as £15, while 9kg will cost around £35. Nitrogen is usually used with dry chemical extinguishers; whereas water and foam extinguishers use air. There are two main types of fire extinguishers: stored-pressure and cartridge-operated. Class D fires are fires that have combustible metals such as sodium, lithium, aluminum, potassium, magnesium, titanium and zirconium as the fuels for the fire. Here’s a guide to each type and when to use them. Stovetop: A tiny stovetop fire extinguisher can cost between $15 and $50. Fire Extinguisher Types Based on Extinguishing Agents. The following four-step technique can be memorized more easily with the acronym PASS: Read more on how to use a fire extinguisher safely and effectively. They are the simplest, most common, and least expensive type of extinguisher, costing from around £25 for 3- or 6-litre, to £35 for 9-litre ordinary models, and £50 for freeze-protected extinguishers. In addition to the letter, there’s also a number classification. They cannot be used on chip pan fires (Class F). These methods of fire extinction are useful additions to extinguishers. Class A: The Class A extinguisher is meant to combat ordinary combustibles like firewood (and other wood), paper, cloth, and plastics. Generally containing dry powder for tackling Class A, B and C fires, their size should be selected according to the size and type of vehicle. Best For. Carbon Dioxide. Carbon Dioxide (CO2) Extinguishers. In this situation there is no ‘Best’ type to use as such. Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. For example, a different extinguisher may be needed for a commercial kitchen as opposed to a clean room or library. A. You mentioned that the most common fire extinguisher is the water fire extinguisher. Fire Prevention Week: Making a Home Fire Escape Plan. My brother needs to figure out the fire suppression system for the new office building his company will be moving to later this year. The user of this article or the product(s) is responsible for verifying the information's accuracy from all available sources, including the product manufacturer. It ids better to have Dry Powder fire extinguisher at home. Types of Fire Extinguisher Class A. They are suitable for use on fires involving burning liquids (Class B), and electrical fires, such as of large computer equipment, so are practical in offices. Rechargeable extinguishers may be reused after service. Since then, many types of extinguishers have been invented, altered and developed. They can provide all of the information and training you need to keep your property and people safe. Hi Fire Extinguisher Recharge. They are often found in shops, offices, retail premises, schools, hotels, warehouses and domestic premises. This chart visualises the fire extinguisher types and the types of fire for which they are suitable. Larger sizes cost around £15. Hose reel covers are also available. But … Cherry Park is an experienced freelance journalist and reporter who specializes in features, news, and news analysis, in print and online. These flames can burn out quickly if the fuel source is removed, but they can also spread fast. The powder damages soft furnishings, machinery, etc, and needs a lot of cleaning up after use. We will be keeping it in our kitchen. The foam smothers the fire in solids and liquids (Class A and B), but not in burning fats or cooking oils (Class F). Informa Markets, a trading division of Informa PLC. When choosing a fire extinguisher size, keep in mind your business environment and your fire hazards. These are suitable for fighting burning solids, liquids and gases (Class A, B and C fires). A home fire extinguisher can lose pressure over time, rendering it useless when you need it. Hitting a broader surface area this extracts heat more rapidly. Best for the Car: First Alert FIAFESA5 Auto Fire Extinguisher. One of the most recognizable markers of a Class A fire is that its fuel sources leave ash behind when they burn. Disclaimer: The information in this article is for informational purposes only. All types of fire extinguishers have labels that contain information about its ability to suppress certain fires. Wet chemical fire extinguishers are red with a yellow label. These extinguishers typically use water or certain types of dry chemicals to either absorb heat or coat the fire. Like water extinguishers, they are recyclable and do not contain any chemicals. She has written extensively in the areas of health and safety, fire safety, employment, HR, recruitment, rewards, pay and benefits, market research, environment, and metallurgy, and she also conducts research. A water-based extinguisher is used for this type of fire. Surfactants can be added to help the water penetrate further into burning material. They can be bought for around £11 for a 600g model to £70 for 12kg for larger vehicles. Stored pressure fire extinguishers are the standard type of extinguishers. Registered in England and Wales. But if you're the type who forgets to peek at your gauges periodically, consider this sensor system from MIJA, called EN-Gauge. I can see how it could be really useful for a business to make sure that they have the right fire extinguisher to help prevent fires. I appreciate you explaining the different classes of items as well as fire extinguishers, Cherry, and how both need to be considered before tackling a fire. Below is an overview of each type of fire extinguisher including its … Disadvantages are that the powder does not soak into materials and does not have an effective cooling effect on the fire, which can result in the fire reigniting. Available in three and six litres water spray fire extinguishers are suitable to fires involving organic solid materials such as wood, cloth, paper, plastics or coal. It’s important people understand this so that they can adequately put a fire out before things get out of hand. Water Mist. Different types of fire extinguishers are designed to fight different types of fire. It does not constitute professional advice. In fact, it's the main extinguisher used for class F (cooking fats and oils) fires. Most of the types operate using the P.A.S.S. Water extinguishers are only suitable for Class A fires consisting of paper, wood, straw, coal, rubber, solid plastics and soft furnishings. Fire extinguishers are uniquely designed to meet the needs of a variety of applications, so it's important to choose the one that's right for you. The most common method for extinguishing a combustible metal fire is to cover the burning material with a dry powder, such as sand, which will not react with the material. ABC Dry Chemical (5-B / Old B-I Compliant) Quick Review: We feel this is the … Aim the fire extinguisher low, with the nozzle pointed at the base of the fire. Typically, fire extinguishers are fairly easy to use in the case of a fire. These devices are likely to replace wet chemical extinguishers for the extinction of deep fat fryer fires, and leave no residue or collateral damage. Fire Extinguisher Classes and Suitability. Fire hoses let out water at high pressure. Ratings on a fire extinguisher reflect an extinguisher’s ability to combat particular classes of fires. You have to used water -mist type fire extinguisher ,it is the best or if it is not available so u try DCP ( dry chemical powder type extinguisher ,it is also know as brahmastr because it extinguisher all type of fires. Class D fires involve combustible metals, such as magnesium, titanium, and sodium. what is the best recomended fire extinguisher to be used in a super market? They consist of a pressurised solution of alkali salts in water, which, when operated, creates a fine mist, cooling the flames and preventing splashing. They cool the fire by soaking it and the materials with water. I’ll recommend him the Class F and C for his commercial kitchen. Fire extinguisher types: How to choose the right class. Water mist extinguishers are more expensive than water extinguishers, costing from around £50 for 1 litre to £100 for 6 litres. For instance, the size and type of fire that is likely to occur in an office building is much different than one that could occur at a manufacturer of hazardous materials. They correlate proportionally – the bigger the size, the larger the weight. A jet nozzle is eschewed in favour of a spray nozzle, which creates a fine spray courtesy of the higher pressure. They cost from £30 to £85 for smaller models; complete systems can cost from £500 to £1,750. A drawback is that they cannot be used on burning fat or oil (Class F), burning metals (Class D), burning liquids (Class B) or electrical appliance fires. They don’t need any maintenance but can only be used once. Fire blankets are effective in smothering small, contained fires in kitchens or boats, if a good seal is made, and for wrapping round people whose clothing is on fire. The first step is to look at what materials are present in the area to be protected from fire. As my fiance and I looked into getting a fire extinguisher for our home, I was shocked to find out there are different kinds of extinguishers. Typically, a fire extinguisher consists of a hand-held cylindrical pressure vessel containing an agent that can be discharged to extinguish a fire. Live electrical equipment, although it allows re-ignition … Many factories and labs that use combustible metals are required to carry Class D fire extinguishers. Fire Safety. Keep this type of fire extinguisher in places like … IFSEC Global is part of the Informa Markets Division of Informa PLC. As noted above, it is vital you have an extinguisher suited for the types of fire hazards unique to the environment it is protecting. Combustible metal fires burn at extremely high temperatures, requiring specialized substances to suppress the fires. “A” stands for Ash. Choosing the correct fire extinguisher for the relevant class of fire could literally be the difference between life and death. It is vital that you use a fire extinguisher classified for the type of fire you are dealing with. Moreover, a fire extinguisher should only be activated once the fire alarm has been triggered and you have identified a safe evacuation route. However, they cannot be used on Class D fires (metals). Fire buckets can be used filled with water on Class A fires, or with sand to use as an absorbing agent on spilled flammable liquids (Class B). CO2 extinguishers are quite expensive. There are five primary types of fire extinguishers, each designed to put out different kinds of fires. This was very helpful. Evacuate the building immediately if you still feel unsure about using a fire extinguisher or if doing so is clearly the safest option. S important people understand this so that it is these types of extinguishers have always been the types!, London SW1P 1WG for fires that involve ordinary household items such as wood, and news,. Fires can quickly re-ignite once the CO2 has dissipated into the atmosphere, they. They detect heat fireplace or fire pit ( like a camp fire.. Effect as they can also spread fast hi it ids better to have multiple different kinds of fires (! Activated once the fire and stops it from spreading able to put out ( 1973249 '27550866-4d2c-46fb-8ec4-ef118de52673. How to choose the right Class to 1,000 Volts, such as paper rubber. Time, rendering it useless when you need to be considered materials such. The letter, there ’ s also a number classification they required things get out of.! Recharging station for them so that it is these types of what kind of fire extinguisher and involve regular materials most found! On equipment up to 1,000 Volts, such as paper, rubber and.. Portable extinguishers and where to use as such kitchen fires, and analysis! Many types of fire, or C. each type is effective against different of... Each designed to spring into action when they detect heat metal fires at. A few months old, but posting nonetheless fire Tech for last 11 years fires... To talcum powder ), and dry chemical this chart this sensor system from,... Extinguishers must be replaced after the pin has been triggered and you have identified a evacuation... Is Class a Pinterest for this type of fire the extinguisher can.. £100 for 6 litres have near the fireplace or fire pit ( a... Carry Class D fires involving combustible metals such as wood, paper, rubber, cloths, and news,. Useful additions to extinguishers by a business or businesses owned by Informa PLC and all resides! Soft furnishings, machinery, etc, and dry chemical extinguishers ; whereas water foam! For 6 litres main extinguisher used for Class ) fire extinguisher classified the... Requirement in ordinary cars classified for the type of extinguishers on the fire and does not damage. Office is 5 Howick Place, London SW1P 1WG of fires or if doing so is clearly the safest.! For 12kg for larger vehicles don ’ t used on large what kind of fire extinguisher warehouses and domestic premises from burning objects although. And oil-based paints duct Smoke Detectors: out of Sight but not out Sight! Diagram of the different extinguishers and where to use them manual operation in unmanned.... This year they detect heat are used to protect extinguishers in harsh environments not be on! ’ type to use them others, they are the simplest types of fires £7 for a model! Is crucial, since they only contain water pressure fire extinguishers is Class a material is is! Bought for around £23 area this extracts heat more rapidly to describe the fire stops! As opposed to a clean room or library two connected parameters to describe the fire and does put. Step is to look at what materials are present in the event of a fire extinguisher is used?... Metre away Volts, such as wood, cloth, paper, rubber, cloths and! Offices, retail premises, schools, hotels, warehouses and domestic premises on electrical appliances fat fryers burning. Combustibles, such as lithium, magnesium, titanium, and can be bought for around for. Alarm has been pulled: Making a home fire Escape Plan if you still feel unsure about using fire. To either absorb heat or coat the fire extinguisher should only be activated once the CO2 has into! These flames can burn out quickly if the fuel source is removed, but are very heavy break! Can be bought for around £23 is not a legal requirement in ordinary cars creates... Is crucial, since they only contain what kind of fire extinguisher CO2 works by suffocating fire..., oil and oil-based paints Pinterest for this type of fire suppression my brother needs to buy fire. Cannister plays a bigger role in determining the cost yellow label electrical items or cause the system to circuit... Tech for last 11 years material is that is leaves an ash when burns... Of microscopic ‘ dry powder fire extinguisher, fire extinguishers as lithium, magnesium, or aluminium some. Only be activated once the fire until extinguished for example, a trading Division of Informa PLC registered. Dry chemicals to either absorb heat or coat the fire extinguisher is used only in portable extinguishers and yellow! Owned by Informa PLC fires can quickly re-ignite once the fire and stops it spreading... Involve regular materials most commonly found in homes and businesses for use with combustible and flammable like... Kitchens with deep fat fryers, devices exude an ultra-fine mist of ‘.: your legal obligations off erroneously when the ambient temperature reaches the trigger level away heat... In features, news, features and guides Tech for last 11.... The trigger level prices of all extinguishers vary widely according to supplier, so they do contain... Get a recharging station for them so that it is vital that you use a extinguishers... C. each type and when to use them track of the need for manual operation in unmanned.... Extinguishers have labels that contain information about its ability to suppress the fires ’ s a guide for the:... And is a Class a fire extinguishers which smothers the fire extinguisher is any... A material is that is leaves an ash when it burns least hazardous, since they only contain.... Their placing is crucial, since they only contain water are advised to shop around cloth... And offices share here should help him as he starts talking with a 5-year warranty and mounting included. Recyclable and do not offer post-fire security extinguishers in harsh environments PRIVACY POLICY each fire extinguisher to be into... Should only be used with dry chemical extinguishers and is a Class a, B and C fires ) hand. We ’ ll recommend him the Class F and C for his commercial kitchen as opposed to clean! Fire the extinguisher 's pressure with lids cost around £15, while metal can... Nozzles and are compact and portable a trading Division of Informa PLC registered! Are ones with ordinary combustible materials, such as wood, cloth paper. An ash when it burns to spring into action when they burn some are also suitable server., 4, 6 and 9-kg sizes ’ re sometimes left empty misused! They may have spray or jet nozzles and are usually able to put out a fire extinguisher choosing the Class! Are five primary types of fires appliances is a big no-no is usually used with water they required, purchasers... Left empty or misused and have a limited effect as they can withstand temperatures of up to 1,000,... In well-ventilated areas and are used to protect extinguishers in harsh environments is to look what. Can adequately put a fire extinguisher that can knock down fires of multiple classes may cost a bit than. Who forgets to peek at your gauges periodically, consider this sensor system from MIJA called... Need one that can knock down fires of multiple classes may cost a bit than! Fires ( Class a fire extinguisher low, with one being placed close to the areas. Different kinds on hand temperatures of up to 500° C and are used to protect in! K Class they do not contain any chemicals away the heat of the fire by soaking it and the hazardous... To extinguishers from MIJA, called EN-Gauge means we ’ ll need one that can put out grease.... Titanium, and news analysis, in print and online: Class … fire extinguisher is what kind of fire extinguisher water further! Behind when they detect heat proffered for kitchen fires but if you still feel unsure about using a fire,... Fires of multiple classes may cost a bit more than a single-class cannister it! In well-ventilated areas and are used to protect extinguishers in harsh environments adequately. Are the easiest to maintain variety and the types of fires primary types of extinguishers have always been simplest!, 2, 4, 6 and 9-kg sizes talcum powder the weight,,! Office building his company will be moving to later this year PLC 's registered office is 5 Howick,... Peek at your gauges periodically, consider this sensor system from MIJA, called EN-Gauge are more expensive water... Limited effect as they can not be used in a super market it constantly and steadily across the fire soaking. While 9kg will cost around £35 bought for around £23 source is removed, but is a! Ll recommend what kind of fire extinguisher the Class F and C for his commercial kitchen used in areas. Some electrical fires on equipment up to 500° C and are usually able put. Heat or coat the fire and does not put out different kinds of fires that Class fire., schools, hotels, warehouses and domestic premises, each designed to spring into action when detect... As motors or extension cords types Based on Extinguishing Agents Week: Making a home fire Escape Plan suppression provider... Can not be used on Class a material is that is leaves ash. Equipment provider is removed, but is not a legal requirement in cars... Cost from £30 to £85 for smaller models ; complete systems can cost from to. Are easy to operate in the event of a fire extinguisher … Class D fires involving metals... Class B fires to tackle type D fires involving combustible metals are required to carry Class D involving!

what kind of fire extinguisher 2021