Atmospheric conditions include variations above and below reference levels of 101,3 kPa (1 013 mbar) and 20 °C (293 K), provided that the variations have a negligible effect on the explosion properties of the flammable substances. The specific substances reported most frequently in the database were gasoline and LPG (propane), both flammables. 3 Substances which in contact with water emit flammable gases Substances which, by interaction with water, are liable to become spontaneously flammable or to give off flammable gases in dangerous quantities. 4 to 7. Flammable Liquids on the Job Site. The other two are: HSG51 - Storage of flammable liquids in containers; HSG176 - Storage of flammable liquids in tanks; It supplements the advice contained in Dangerous substances and explosive atmospheres. 106 (d) (3) (ii) (a) requires " the bottom, top, door, and sides of cabinet shall be at least No. The main example of an inflammable substance is coal which is by, and large found as sedimentary rocks and is essentially utilised in creating intensity and light. This refrigerant is a highly flammable, colorless gas that is heavier than air. Powdered Sugar and Spices. This page is a guide to the most common regulations relating to flammable and combustible liquids. Deflagration Index: This is simply the rate of pressure at which a flammable substance can be allowed to escape without causing an explosion. 1. Should a flammable material meet an ignition source in the presence of oxygen, only the low strength (energy level) of the ignition source or the low (or high) relative concentration 62 of either the flammable material or oxygen can. S-Photo/Shutterstock. dust, gases or vapours that when airborne may form a potentiallyLow: Little risk of fire due to few combustible materials, absence of highly flammable substances, and minimal heat sources. handling and storage of flammable substances; introduce procedures to prevent accidents and protect people from the hazards of flammable substances; find more detailed information when you need it. Liquids with a flashpoint less than 60oC (140oF) are considered flammable chemicals. [14]Subsets of class 4 are: 4. The five classes of fire are: Class A Fire: Ordinary Combustible. The flashpoint temperature of the flammable liquid varies between 0 to 60 °C. 55 – Gases, Vapors, Fumes, Dusts, and Mists, and are listed by chemical name. Bahan-bahan kimia terbagi atas 3 wujud zat, yaitu : padat, gas, dan larutan. 224 is assigned to a generic type in accordance with that Table. For flammable liquid classifications, GHS categories 1-3 are equivalent to the ADG code packing group I-III. Gasoline is the most common, but there are other flammable and combustible liquids and. The guidance is one of three documents dealing with fire and explosion hazards associated with flammable liquids. Hydrogen. F: highly flammableFlammable Sign Meaning Flammable substances are dangerous and a threat to the environment and health. Paragraph 1910. So nonflammable is the word of choice for careful writers, especially those working in a public safety capacity. By burning, one generally means self. Hazard classifications National Fire Protection Association (NFPA) hazard classifications for flammable and combustible liquids are listed below: Hazard classification for flammable liquids Class Flash point Boiling point Examples I-A below 73°F (23°C) below 100°F (38°C) diethyl ether, pentane, ligroin, petroleum ether I-B below 73°F (23°C. Melies The Bunny/Flickr. A change is that GHS has introduced category 4 which overlaps with the C1 combustible liquids as. Benzene has a flashpoint of about 11. Flammable symbol. Gasoline, Diesel Fuel, and Motor Oil. group of dirty plastic containers in front of a wall. Flame resistance is the property of a substance not to flame in case of contacting with fire. Inflammable substances are the ones that are much harder to burn or catch fire. e. They are divided into flammable, non-flammable and poisonous. 4. Oxygen. It's the diatomic hydrogen gas that is extremely flammable. 4. flammable substance means any flammable or combustible solids or liquids or flammable gas; flammable substance means any material or substance defined as "flammable" or as a "combustible fiber," " combustible liquid ," " flammable liquid ," or "flammable solid" by the fire code adopted under section 3737. Upper flammability limit (UFL): This indicates the highest concentration at which a flammable gas, solid, or liquid can be considered flammable in open air. Ensure that your acetone (and other Class 3 liquid) containers. Incendiary ammunition. Fire and explosion can result when the following three elements come together (commonly referred to as the fire triangle): a source of fuel (a flammable or combustible substance)Solution. It is also important in processes that produce combustible substances as a by-product. ) in the most common sizes: AA, AAA, C, D, button cell, 9-volt, etc. Bahan kimia yang mudah terbakar atau disebut juga bahan kimia flammable adalah bahan kimia yang mudah bereaksi dengan oksigen sehingga menimbulkan api. Three basic requirements must be met for explosion to take place: flammable substance - fuel; oxidizer - oxygen or air; source of ignition - spark or high heatDivisions. The rate at which a liquid produces flammable vapors depends upon its vapor pressure. Highly flammable liquids are those that evaporate at room temperature. Flammable materials are easily ignited, causing fires. Follow these requirements for flammable and combustible liquids storage at UC San Diego. Combustible materials are solids or liquids that can easily ignite and burn. 2. Ignition Temperature. Sometimes these chemicals are referred to as water-reactive substances. Flammable Liquid Properties ›. it has a flash point at or below nominal threshold temperatures defined by a number of national and international standards organisations. 3: Substances which, in. flammable meaning: 1. Flammable Substances Flammable and Combustible Liquids. Learn more. It is also used to characterize the fire hazards of fuels. These products ignite easily, so its best to keep them away. 4. Flammable & Combustible Liquids. Examples of flammable materials include wood, kerosene, and alcohol. 1 through 5704. However, many of these limits are outdated. Where the concentration of the regulated flammable substance in the mixture is one percent or more by weight of the mixture, the entire weight of the mixture must be applied toward the 10,000 pound threshold quantity for the flammable substance unless the owner or operator can demonstrate that the mixture itself does not have an. hydrogen (H), a colourless, odourless, tasteless, flammable gaseous substance that is the simplest member of the family of chemical elements. Which word is correct: flammable or inflammable? Trick question: both flammable and inflammable are correct, as they both mean "capable of being easily ignited and of burning quickly. Flammable and combustible liquids exhibit multiple health hazards besides the risk of fire. flammable: [adjective] capable of being easily ignited and of burning quickly. A flammable liquid is a liquid with flash point of not more than 60. 3 Flammable Solids. 1 Flammable gases. , they don’t catch fire easily. Gasoline vapours are explosive at a little over a 1% mixture in air by volume and crude oil vapours lower yet. Crush 5 antacid tablets into a powder. According to NFPA, a flammable liquid is a liquid with a closed-cup flash point less than 100°F (38°C). Do not distill flammable substances under reduced pressure. 106 (d) (3) (ii) (a) requires " the bottom, top, door, and sides of cabinet shall be at least No. High temperature, low humidity, and low air pressure can make a substance more flammable. Flammability is the ability of a substance to catch fire and burn when exposed to heat, a spark, or an open flame. (4) Flammable substance containers must be declared gas or vapour-free by a competent person before any modification or repairs are undertaken. Powdered Sugar and Spices. Alcohol is flammable. Something that is flammable burns easily: 2. Hence, chemical combustion requires a degree of difficulty, which is quantified through fire testing. Print Page. c) If bulk storage is planned the local Fire Prevention Officer should be consulted for advice on a Petroleum License. The liquid you rub over your fingernails is composed of acetone, which is highly flammable. Make sure you’re adhering to UN regulations when storing and shipping. General guidance is available in the ILO publication 'Major hazard control: A practical manualFlammable solids will be identified with the flame pictogram shown. Stir 50 ml (~10 tsp) of vinegar into the powder (10 ml per tablet) to make a slurry. While this varies greatly depending on the material, flammable substances usually have a flash point of below 37. 1 DefinitionFor a time, a substance that couldn't easily catch fire was referred to as being noninflammable. These weapons, which produce heat and fire through the chemical reaction of a flammable substance, cause. 3 Toxic* gases. Check out these common household items that are highly flammable. Because the vapors of flammable liquids ignite and burn easily, strict storage requirements are essential. Illegal drugs or illicit substances of any kind; Gas grills; Small Unmanned Aircraft Systems. 3. 82 of the Revised Code. Oil-based paints: These typically include flammable substances, including benzene, alcohol, and ketones. You will get to learn more on this page. It also includes the list of UN numbers and proper shipping names for each class and division. Flammable substances includes both full and empty gas cylinders. 2 In the last paragraph, replace the words “chapter 33” with “section 33”. Gasoline, turpentine, and paint thinner. All containers holding hazardous substances must be labelled, including containers of hazardous waste. 2. Many flammable and combustible liquids and solids are volatile in nature; that is, they evaporate quickly and are continually giving off vapours. 8. Flammable substances . The water and the sealed container prevent oxygen from the air from ever reaching and combining with the petroleum distillates saturating the rags. These toxicity and flammability characters combine to form a refrigerant safety classification (e. 2 FLAMMABLE GASES. A flammable substance is defined as a material that ignites more easily than other materials, making it more hazardous to health. Many flammable and combustible liquids. Table 3 summarises the minimum separation distances of LPG vessels from flammable substance's vessels and bunds, depending on their flashpoints. 1. Ignition Source. Lower flammability limit (LFL): The lowest concentration (percentage) of a gas or a vapor in air capable of producing a flash of fire in the presence of an ignition source (arc, flame, heat). A perfume with an alcohol concentration over 85% is more likely to evaporate. Common examples of flammable refrigerants include R-290 (Class A3), R-152a (Class. Contact with metals may evolve flammable hydrogen gas. g. Fall Protection This course covers: legislation, PPE, anchor point location, lanyard selection fall clearance calculations, and more. Class 4: flammable solids. 8 C)≥100 F (37. Table 1: Classes of Flammable and Combustible Liquids Class Flash Point Boiling Point Exceptions Class IA Flammable Liquids < 73 F (22. The types of reported fires and explosions of flammable substances in the database included 55 unconfined vapor cloud explosions, 43 confined vapor explosions, 48 fireballs, 22 BLEVEs, and 11 detonations of flammable substances. 8 degrees C) or higher, the total of which make up 99% or more of the total volume of the mixture. Flammable liquids have a flash point of less than 100°F. Danger. OSHA and the US Department of Transportation offer a long list of requirements for Class 3 substance storage. The main difference lies that flammable substances catch fire easily, and inflammable substances are not as easy to ignite, i. The other two are: HSG140 - Safe use and handling of flammable liquids; HSG176 - Storage of flammable liquids in tanks; It supplements the advice contained in Dangerous substances and explosive atmospheres. Flash point > 60°C and ≤ 93°C. 2. Introduction. Hazardous Materials: Class 4. Class 3 - Flammable liquids (and Combustible liquids [U. Flammable and combustible liquids exhibit multiple health hazards besides the risk of fire. 0 °F) are called flammable, whereas fuels having. Technically, “nonflammable”. Tests must be done to ensure that the work may be safely performed. 6. Flammable liquids cabinets do not have to be ventilated. 2 You can ship dry ice to Canada if your shipment meets the following three conditions:. A Molotov cocktail is a crude incendiary bomb, typically a bottle filled with a flammable liquid and a wick that is ignited before throwing. This page is a guide to the most common regulations relating to flammable and combustible liquids. Nail polish remover. A material is considered flammable if it has a flash point of any temperature below 37. A material is considered combustible if it has a flash point higher than 37. flammable. false. A good way to remember to use flammable over inflammable is that it is a simpler word, as is it’s opposite. C. A material is considered flammable if it has a flash point of any temperature below 37. You cannot burn sulfuric acid. Give feedback. Division 2. ”. Flammable substances includes both full and empty gas cylinders. Flammable substances are defined as substances that will ignite and continue to burn when brought into contact with an ignition source. gas, vapours, mists and dusts). However, the flammability of alcohol and its dangers depend on its proof and its form. 3. Flame: Flammable materials or substances liable to self ignite when exposed to water or air (pyrophoric), or which emit flammable gas. It is extremely flammable. Class 5 - Oxidizing substances and organic peroxides. 0 percent by volume, and. 2. 2 Spontaneously Combustible: Solid substances that ignite spontaneously (aluminium alkyls, white phosphorus). A flammable liquid is a liquid having a flash point of not more than 60 °C (140 °F), or any material in a liquid phase with a flash point at or above 37. See moreA flammable liquid is a liquid which can be easily ignited in air at ambient temperatures, i. 4. Generally, a material can be rated as extremely flammable, flammable, and non-flammable. Enter a Crossword Clue. Flammable Liquid Properties ›. Most of the fuels are hydrocarbon products obtained from fractional distillation of crude oil. 5 psi. They are those chemical substances that can be compressed or liquefied, through pressure, extreme cold or dissolution (among other techniques). 2 Legislation on Flammable Materials In Singapore, flammable materials are regulated or licensed by different authorities: • The Ministry of Manpower (MOM) regulates the exposure to flammable materials atGenerates NaOH and NH 3 (flammable) Sodium azide: Violent reaction with strongly heated azide: Sodium hydride: Reacts explosively with water: Sodium hydrosulfite: Heating and spontaneous ignition with 10% H 2 O: Sodium metal: Generates flammable hydrogen gas: Tetrachloro silane: Violent reaction: Thionyl chloride: Violent reaction which forms. Changes in flash points clearly indicate that the substance is adulterated. Are cylinders stored away from highly flammable substances such as oil, gasoline, or waste? [CGA 3. Flour is a powdery substance made from the pulverized seeds of plants like wheat, barley, corn, and rice. 3°C). Flammable & Combustible Liquids. Division 2. Vector fire warning sign red and black. Combustible substances include dust, fibres, fumes, mists or vapours produced by the substance, like heating oil, engine oil and vegetable oil, as well as timber products. 1 Flammable solids, self-reactive. Batteries must be protected from damage and creating sparks or a dangerous evolution of heat. The Dangerous Substances and Explosive Atmospheres Regulations 2002 (DSEAR) provide for the first time a specific legal requirement to carry out a hazardous area study, and document the conclusions, in the form of zones. 2. Definition of Flammability. You will get to learn more on this page. Since flammable substance and oxidisers cannot be frequently eliminated, inhibiting ignition of a potentially explosive atmosphere can eliminate danger at the source. Flammable and combustible products are used for a wide variety of purposes and are commonly found in the home. Should a. For example glass, steel. 8 ºC and below 93. 4. Substances and mixtures which, in contact with water, emit flammable gases – Category 1, Category 2 and Category 3 Organic peroxides – Type B*, Type C, Type D, Type E and Type F *Note that the most severe hazard category in the self-reactive substances and mixtures hazard class (Type A) is assigned the exploding bomb. A material that is flammable can be set on fire, while a material that is inflammable is capable of bursting into flames without. Flammable Liquid Definition. ” The cabinet must be specifically rated as a flammable liquid storage cabinet to ensure proper fire protection. 8. 3339 and say “hazardous materials” to confirm availability in advance. Something that is flammable burns easily: 3. The potential of flammable substances to cause death and destruction was shown by the jet-fuel-fed fires that brought down both towers of the New York World Trade Center in the 9/11/01 attack. NFPA CLASSIFICATION OF FLAMMABLE LIQUIDS S 4. The vaporization rate increases as the temperature increases. Hazards associated with flammable gas are directly dependent on the probability of creating an explosive atmosphere. CLASS 4 - Flammable Solids, Substances liable to spontaneous combustion; Substances that on contact with water emit flammable gases (water-reactive substances) 4. 4 parts of gasoline mixed with 100 parts air. Joints shall be riveted, welded or made tight by some. com. The Crossword Solver found 30 answers to "flammable substance", 7 letters crossword clue. Flammable liquids, corrosives and toxic chemicals are all different classes of Dangerous Goods and are therefore subject to the segregation requirements of Australian Standard AS3833:2007 — The storage and handling of mixed classes of dangerous goods, in packages and intermediate bulk containers. Self reactive substances. And benzene catches flames easily at low temperatures (that is, it burns in the presence of any fire source). , furnace, oven) and electrical outlets has to be considered. Division 4. Browse Getty Images' premium collection of high-quality, authentic Flammable Substances stock photos, royalty-free images, and pictures. This means it will ignite when there is 1. 1: Flammable gases - Division 2. Atmospheric conditions include variations above and below reference levels of 101,3 kPa (1 013 mbar) and 20 °C (293 K), provided that the variations have a negligible effect on the explosion properties of the flammable substances. Give feedback. Flammable and combustible liquids vaporize and form flammable mixtures with air when in open containers, when leaks occur, or when heated. Note that flammable liquids, like petrol, release flammable vapours, so you need to avoid sources of ignition when transferring flammable substances. Acetone has an extremely low flash point of −20 °C, giving it the ability to readily ignite at room temperature. Flammable Liquids. 8 °C (100 °F) that is. 10 Household Items That are Extremely Flammable. John B Durkee II, in Cleaning with Solvents: Methods and Machinery, 2014. Flammable Substance. Per OSHA, workplace environments that contain flammable vapors must be equipped with ventilation capable of reducing the concentration of the substance to less than 10% of the LEL. This needs to be present in a relatively high quantity to produce an explosive mixture (e. The chapter. ” Substances that ignite in air (i. Division 2. Every hot work is dangerous in some way. When heated, sulfur can produce toxic fumes, but it does not ignite or support combustion. The vapors are present at a certain level in. Class 3 - Flammable liquids. 8 degrees C) or higher, the total of which make up 99% or more of the total volume of the mixture. Category 1. 5 Specifications for Fiber optic "Route" Construction on Railroad Right-of-WaySubstances and mixtures which, in contact with water, emit flammable gases – Category 1, Category 2 and Category 3 Organic peroxides – Type B*, Type C, Type D, Type E and Type F *Note that the most severe hazard category in the self-reactive substances and mixtures hazard class (Type A) is assigned the exploding bomb. Alcohol is flammable. Hydrocarbon fuels could be gases, light oils and heavy oils depending on the carbon chain length as illustrated by the examples below:The Control of Substances Hazardous to Health regulations (COSHH) provide vital safety information for businesses that work with hazardous materials. In some cases, the flammable gases may ignite very quickly (spontaneously). Use of Flammable Liquids 3. Flammable Substances. Combustible substances include dust, fibres, fumes, mists or vapours produced by the substance, like heating oil, engine oil and vegetable oil, as well as timber products. , acute toxicity and flammable liquids each include four hazard categories numbered from category 1 through category 4. Dangerous goods class 4 groups together flammable substances, which in turn are divided into three subclasses. Fires set on ruptured petroleum pipelines have caused significant destruction in Iraq in 2003/2004. These include: Flammable solids. When safety cans are used, up to 25 gallons may be stored without using a flammable storage cabinet. Cosolvent Machines. Last Updated: November 14, 2023 2:00:52 PM PST. These fire and flammability standards are instrumental in the establishment of building codes, insurance requirements, and other fire regulations that govern the use of building materials, as well as in defining the appropriate criteria for the storage, handling, and transport of highly flammable substances. Alcohol, typically ethanol or isopropyl alcohol, is used in perfumes as a solvent. b) Petrol should be stored at least 6m away any building preferably in open air or have direct access to open air. 2. The flash point is a descriptive characteristic that is used to distinguish between flammable fuels, such as petrol (also known as gasoline ), and combustible fuels, such as diesel . (physics) evaporating or vaporizing readily under normal conditions. About dangerous substances. The hydrogen atom has a nucleus consisting of a proton bearing one unit of positive electrical charge; an electron, bearing one unit of negative electrical charge, is also associated with this. The LEL is commonly tested using a gas meter calibrated for. An arrow with a flammable substance attached to the shaft, close to the tip, was shot from a bow or short-muzzled musket. Class 3 - Flammable liquids. R-22a is a hydrocarbon refrigerant blend with primary components including flammable substances such as propane and butane. Flammability is the ability of a substance to catch fire and burn when exposed to heat, a spark, or an open flame. Despite anything "contained in this Chapter-(a) flammable liquid must not be deemed to be stored or conveyed or transported when contained in the fuel tank of a motor vehicle or stationary engine in normal use as such; (b) any person may keep varnish, lacquer, vulcanizing cement or similar substances which are flammable on any. This one-day course is designed for personnel working with or near flammable substances in the oil and gas industry. ]) Class 4 - Flammable solids; Substances. Not more than 60 gallons of Class 3 flammable liquids shall be stored in any one storage cabinet. For selected substances also volumes of 79 / 65 mL and 7 mL were tested. It is also important in processes that produce combustible substances as a by-product. White phosphorus is a chemical substance that ignites when exposed to oxygen. The antonym or word that means the opposite of flammable and inflammable is nonflammable. Combustible materials typically require higher temperatures to ignite than flammable ones. Verified by Toppr. Though, it should be handled carefully while using it. 8 C)100 F (37. 2: Non-Flammable Gas: 2. The term is considered by many safety professionals to be the same as the lower explosive level (LEL). 10. So Class IA is the most volatile. 3 (29)c, g, i. S. Drum / cylinder handling. July 14, 2010. For example, an extinguisher with a BC rating is suitable for use with fires involving flammable liquids and energized electrical equipment. Common examples of flammable refrigerants include R-290 (Class A3), R-152a (Class. Flash point ≥ 23°C and ≤ 60°C. handling and storage of flammable substances; introduce procedures to prevent accidents and protect people from the hazards of flammable substances; find more detailed information when you need it. The maximum amount permitted outside a flammable cabinet, safety can or approved refrigerator or freezer is ten gallons of combined flammables, with no individual container being greater than one gallon (8CCR §5538). Many fires start when flammable liquids are spilt or their containers are left open, and their vapours reach an ignition source such as an open flame. Flammable Material. g. They have to specify if the item is flammable or combustible and indicate any potential. e. able…. 1 hazardous materials? Flammable. The flammability of a substance is a measure of its ability to burn. Class 6: substances toxic to people. Flammable = able to be set on fire. 来自 Europarl Parallel Corpus - English. They do not catch fire easily. Propane is a flammable gas that’s commonly used for grilling. The Singapore Civil Defence Force (SCDF) controls the transport and storage of petroleum and bulk flammable substances while the Singapore Police Force regulates explosives and their precursors for security reasons. g. Protective Equipment and Precautions for FirefightersFlammable liquids should be stored separately from other dangerous substances that may enhance the risk of fire or compromise the integrity of the storage unit; for example, energetic substances, oxidizers and corrosive materials. Re: The definitions of combustible and flammable liquids under 29 CFR 1926 and 29 CFR 1910. It refers to the ability of the respective substance to burn or ignite, causing combustion or fire. 800. Under the ADG Code, flammable liquids also include: liquids offered for transport at temperatures at or above their flash point substances that are transported at elevated temperatures in a liquid state and that give off a flammable vapour at a temperature at or below the maximum transport temperature. Flammable solids often encountered in the laboratory include alkali metals, magnesium metal, metallic hydrides, some organometallic. Learn how to identify each type of substance with. Flammable materials sign for print. Find Flammable Materials stock images in HD and millions of other royalty-free stock photos, illustrations and vectors in the Shutterstock collection. The chemical reaction creates intense heat of about 815 degrees Celsius and produces light and a thick smoke. Class 3: flammable liquids. However, the flammability of alcohol and its dangers depend on its proof and its form. Pouring flammable liquids can generate static electricity. A Free Toolbox Talk Idea Everyday! A new toolbox talk idea will be sent to you first thing in the morning, every business day. 8. Solve any question of Thermal Properties Of Matter with:-. For the risk management program, where the concentration of the regulated flammable substance in the mixture is one percent or more by weight of the mixture, the entire weight of the mixture must be applied toward the 10,000 pound threshold quantity for the flammable substance unless the owner or operator can demonstrate that the. Small quantities of flammable substances can be found in most workplaces. g. Nonflammable began to replace that term as flammable become more prominent for the sake of clarity. It’s highly likely that you have a bottle of this first chemical lying around somewhere in your garage. It is an important property to consider when dealing with potentially hazardous materials. Decanting or transferring hazardous substances; Incompatibles; Store only what you need, store it safely; Gas cylinders; Oxy-acetylene welding;. The presence of hazardous materials can always be detected by the sense of smell. 3. 2: Substances liable to spontaneous combustion. ) in the most common sizes: AA, AAA, C, D, button cell, 9-volt, etc. Flamehandling and storage of flammable substances; introduce procedures to prevent accidents and protect people from the hazards of flammable substances; find more detailed information when you need it. Here are eight flammable liquids that may be lying around your home. Workers using these systems must understand and operate them properly to remain safe while working around potentially dangerous gases. The flashpoint of a chemical is the temperature at which the vapor of the chemical is capable of being ignited momentarily. A material is considered combustible if it has a flash point higher than 37. Combustible liquids have flash points at or above 100°F (39°C). These symbols cannot be readily interpreted without the aid of a table to translate the numerical codes. Attention. This is why it was useful war material during the Second World War. It is impossible to create fire without heat and oxygen. A flammable sign can be a placard or a label used to mark materials that can easily catch fire. Most of OSHA’s PELs for Shipyard Employment are contained in 1915. The National Fire Protection Association (NFPA) defines a flammable liquid as a liquid with a flash point that does not exceed 100°F (38°C). The Manual consists of more than 5,000 pages of railway engineering reference material, the recommended practices for the industry. An aerosol is any substance kept under pressure and released as a spray (think: hairspray, spray deodorant, air freshener, sunscreen and spray paint). 1 A solid that under normal conditions of transport is readily combustible, or would cause or contribute to fire through friction or from heat retained from manufacturing or processing. Aerosols should be used with caution, away from open flames, lit cigarettes, heat sources, air vents and appliances. Substances which may explode when in contact with a source of ignition or which are more sensitive to shock and friction than dinitrobenzene. Flammable substances sign. • Store containers with flammable or combustible liquids in a flammable liquid storage cabinet equipped with a grounding system that is marked “Flammable – Keep Fire Away. 13 Explosion-Proof Facilities for Class II A Cosolvent Machines. Even if the same flammable substance is present, the safety distance is 50 m when the flash point is less than 21 °C and 45 m when the flash point is between 21 °C and 70 °C.