Smoke Production in Fires
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Module III – Fire Analysis Fire Fundamentals: Definitions
Module III – Fire Analysis Fire Fundamentals: Definitions Joint EPRI/NRC-RES Fire PRA Workshop August 21-25, 2017 A Collaboration of the Electric Power Research Institute (EPRI) & U.S. NRC Office of Nuclear Regulatory Research (RES) What is a Fire? .Fire: – destructive burning as manifested by any or all of the following: light, flame, heat, smoke (ASTM E176) – the rapid oxidation of a material in the chemical process of combustion, releasing heat, light, and various reaction products. (National Wildfire Coordinating Group) – the phenomenon of combustion manifested in light, flame, and heat (Merriam-Webster) – Combustion is an exothermic, self-sustaining reaction involving a solid, liquid, and/or gas-phase fuel (NFPA FP Handbook) 2 What is a Fire? . Fire Triangle – hasn’t change much… . Fire requires presence of: – Material that can burn (fuel) – Oxygen (generally from air) – Energy (initial ignition source and sustaining thermal feedback) . Ignition source can be a spark, short in an electrical device, welder’s torch, cutting slag, hot pipe, hot manifold, cigarette, … 3 Materials that May Burn .Materials that can burn are generally categorized by: – Ease of ignition (ignition temperature or flash point) . Flammable materials are relatively easy to ignite, lower flash point (e.g., gasoline) . Combustible materials burn but are more difficult to ignite, higher flash point, more energy needed(e.g., wood, diesel fuel) . Non-Combustible materials will not burn under normal conditions (e.g., granite, silica…) – State of the fuel . Solid (wood, electrical cable insulation) . Liquid (diesel fuel) . Gaseous (hydrogen) 4 Combustion Process .Combustion process involves . – An ignition source comes into contact and heats up the material – Material vaporizes and mixes up with the oxygen in the air and ignites – Exothermic reaction generates additional energy that heats the material, that vaporizes more, that reacts with the air, etc. -
Safety Data Sheet
Coghlan’s Magnesium Fire Starter #7870 SAFETY DATA SHEET This Safety Data Sheet complies with the Canadian Hazardous Product Regulations, the United States Occupational Safety and Health Administration (OSHA) Hazard Communication Standard, 29 CFR 1910 (OSHA HCS), and the European Union Directives. 1. Product and Supplier Identification 1.1 Product: Magnesium Fire Starter 1.2 Other Means of Identification: Coghlan’s #7870 1.3 Product Use: Fire starter 1.4 Restrictions on Use: None known 1.5 Producer: Coghlan’s Ltd., 121 Irene Street, Winnipeg, Manitoba Canada, R3T 4C7 Telephone: +1(204) 284-9550 Facsimile: +1(204) 475-4127 Email: [email protected] Supplier: As above 1.6 Emergencies: +1(877) 264-4526 2. Hazards Identification 2.1 Classification of product or mixture This product is an untested preparation. GHS classification for this preparation is based upon its use as a fire starter by making shavings and small particulate from the metal block. As shipped in mass form, this preparation is not considered to be a hazardous product and is not classifiable under the requirements of GHS. GHS Classification: Flammable Solids, Category 1 2.2 GHS Label Elements, including precautionary statements Pictogram: Signal Word: Danger Page 1 of 11 October 18, 2016 Coghlan’s Magnesium Fire Starter #7870 GHS Hazard Statements: H228: Flammable Solid GHS Precautionary Statements: Prevention: P210: Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P280: Wear protective gloves, eye and face protection Response: P370+P378: In case of fire use water as first choice. Sand, earth, dry chemical, foam or CO2 may be used to extinguish. -
Operating and Maintaining a Wood Heater
OPERATING AND MAINTAINING A WOODHEATER FIREWOOD ASSOCIATION THE FIREWOODOF AUSTRALIA ASSOCIATION INC. OF AUSTRALIA INC. Building a wood fire Maintaining a wood heater For any fire to start and keep going three things are needed, Even in correctly operated wood heaters and fireplaces, some fuel, oxygen and heat. In wood fires the fuel is provided by the of the combustion gases will condense on the inside of the wood, the oxygen comes from the air, and the initial heat comes flue or chimney as a black tar-like substance called creosote. from burning paper or a fire lighter. In a going fire the heat is If this substance is allowed to build up it will restrict the air flow provided by the already burning wood. Without fuel, heat and in the heater or fireplace, reducing its efficiency. Eventually oxygen the fire will go out. When the important role of oxygen a build up of creosote can completely block the flue, making is understood, it is easy to see why you need plenty of air space around each piece of kindling when setting up the fire. the fire impossible to operate. One sign of a blocked flue is smoke coming into the room when you open the heater door. Kindling catches fire easily because it has a large surface Creosote appearing on the glass door is another indication area and small mass, which allows it to reach combustion that your heater is not working properly. Because creosote temperature quickly. The surface of a large piece of wood is flammable, if the chimney or flue gets hot enough the will not catch fire until it has been brought up to combustion creosote can catch alight, causing a dangerous chimney fire. -
Learn the Facts: Fuel Consumption and CO2
Auto$mart Learn the facts: Fuel consumption and CO2 What is the issue? For an internal combustion engine to move a vehicle down the road, it must convert the energy stored in the fuel into mechanical energy to drive the wheels. This process produces carbon dioxide (CO2). What do I need to know? Burning 1 L of gasoline produces approximately 2.3 kg of CO2. This means that the average Canadian vehicle, which burns 2 000 L of gasoline every year, releases about 4 600 kg of CO2 into the atmosphere. But how can 1 L of gasoline, which weighs only 0.75 kg, produce 2.3 kg of CO2? The answer lies in the chemistry! Î The short answer: Gasoline contains carbon and hydrogen atoms. During combustion, the carbon (C) from the fuel combines with oxygen (O2) from the air to produce carbon dioxide (CO2). The additional weight comes from the oxygen. The longer answer: Î So it’s the oxygen from the air that makes the exhaust Gasoline is composed of hydrocarbons, which are hydrogen products heavier. (H) and carbon (C) atoms that are bonded to form hydrocarbon molecules (C H ). Air is primarily composed of X Y Now let’s look specifically at the CO2 reaction. This reaction nitrogen (N) and oxygen (O2). may be expressed as follows: A simplified equation for the combustion of a hydrocarbon C + O2 g CO2 fuel may be expressed as follows: Carbon has an atomic weight of 12, oxygen has an atomic Fuel (C H ) + oxygen (O ) + spark g water (H O) + X Y 2 2 weight of 16 and CO2 has a molecular weight of 44 carbon dioxide (CO2) + heat (1 carbon atom [12] + 2 oxygen atoms [2 x 16 = 32]). -
Combustion Chemistry William H
Combustion Chemistry William H. Green MIT Dept. of Chemical Engineering 2014 Princeton-CEFRC Summer School on Combustion Course Length: 15 hrs June 2014 Copyright ©2014 by William H. Green This material is not to be sold, reproduced or distributed without prior written permission of the owner, William H. Green. 1 Combustion Chemistry William H. Green Combustion Summer School June 2014 2 Acknowledgements • Thanks to the following people for allowing me to show some of their figures or slides: • Mike Pilling, Leeds University • Hai Wang, Stanford University • Tim Wallington, Ford Motor Company • Charlie Westbrook (formerly of LLNL) • Stephen J. Klippenstein (Argonne) …and many of my hard-working students and postdocs from MIT 3 Overview Part 1: Big picture & Motivation Part 2: Intro to Kinetics, Combustion Chem Part 3: Thermochemistry Part 4: Kinetics & Mechanism Part 5: Computational Kinetics Be Prepared: There will be some Quizzes and Homework 4 Part 1: The Big Picture on Fuels and Combustion Chemistry 5 What is a Fuel? • Fuel is a material that carries energy in chemical form. • When the fuel is reacted (e.g. through combustion), most of the energy is released as heat • Though sometimes e.g. in fuel cells or flow batteries it can be released as electric power • Fuels have much higher energy densities than other ways of carrying energy. Very convenient for transportation. • The energy is released via chemical reactions. Each fuel undergoes different reactions, with different rates. Chemical details matter. 6 Transportation Fuel: Big Issues •People want, economy depends on transportation • Cars (growing rapidly in Asia) • Trucks (critical for economy everywhere) • Airplanes (growing rapidly everywhere) • Demand for Fuel is “Inelastic”: once they have invested in a vehicle, people will pay to fuel it even if price is high •Liquid Fuels are Best • Liquids Flow (solids are hard to handle!) • High volumetric and mass energy density • Easy to store, distribute. -
Wildland Firefighter Smoke Exposure
❑ United States Department of Agriculture Wildland Firefighter Smoke Exposure EST SERVIC FOR E Forest National Technology & 1351 1803 October 2013 D E E P R A U RTMENT OF AGRICULT Service Development Program 5100—Fire Management Wildland Firefighter Smoke Exposure By George Broyles Fire Project Leader Information contained in this document has been developed for the guidance of employees of the U.S. Department of Agriculture (USDA) Forest Service, its contractors, and cooperating Federal and State agencies. The USDA Forest Service assumes no responsibility for the interpretation or use of this information by other than its own employees. The use of trade, firm, or corporation names is for the information and convenience of the reader. Such use does not constitute an official evaluation, conclusion, recommendation, endorsement, or approval of any product or service to the exclusion of others that may be suitable. The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orientation, genetic information, political beliefs, reprisal, or because all or part of an individual’s income is derived from any public assistance program. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact USDA’s TARGET Center at (202) 720-2600 (voice and TDD). To file a complaint of discrimination, write USDA, Director, Office of Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C. -
90S TV Superbonus
America’s Favorite TV Shows (America has bad taste) Friends Which character had a twin? Phoebe Which of the friends dated Rachel? Ross, Joey Who of the following did not guest star on the show? Circle your answers. Ralph Lauren Winona Ryder Sarah Jessica Parker Ben Stiller RuPaul Brad Pitt Why did Ross get divorced from his first wife? She is a lesbian Where does Phoebe’s boyfriend David move to in the first season? Minsk Who was Rachel’s prom date? Chip On which daytime drama does Joey star as Dr. Drake Remoray? Days of our Lives Why is Joey written out of the daytime drama? He says in an interview he writes his own lines At which job does Monica have to wear fake breasts? The 50s diner Who does Rachel convince to shave their head? Bonnie, Ross’s girlfriend In one episode, Joey buys a pet chick. What does Chandler buy? A duck Who plays Phoebe’s half-brother Frank? Giovani Ribisi What favor does Phoebe do for Frank and his wife Alice? She is a surrogate mother for triplets What other tv show that started in the 90s did the actress playing Alice star on? That 70s Show When Joey and Chandler switch apartments with Monica and Rachel, what do Rachel and Monica offer to get their apartment back? Season tickets to the Knicks In Season 5, whose apartment does Ross move into? Ugly Naked Guy Who is first to figure out that Chandler and Monica are dating? Joey Who gets married in Las Vegas? Ross and Rachel Who plays Rachel’s sister Jill? Reese Witherspoon What causes the fire in Rachel and Phoebe’s apartment? Rachel’s hair straightener -
Fire Service Features of Buildings and Fire Protection Systems
Fire Service Features of Buildings and Fire Protection Systems OSHA 3256-09R 2015 Occupational Safety and Health Act of 1970 “To assure safe and healthful working conditions for working men and women; by authorizing enforcement of the standards developed under the Act; by assisting and encouraging the States in their efforts to assure safe and healthful working conditions; by providing for research, information, education, and training in the field of occupational safety and health.” This publication provides a general overview of a particular standards- related topic. This publication does not alter or determine compliance responsibilities which are set forth in OSHA standards and the Occupational Safety and Health Act. Moreover, because interpretations and enforcement policy may change over time, for additional guidance on OSHA compliance requirements the reader should consult current administrative interpretations and decisions by the Occupational Safety and Health Review Commission and the courts. Material contained in this publication is in the public domain and may be reproduced, fully or partially, without permission. Source credit is requested but not required. This information will be made available to sensory-impaired individuals upon request. Voice phone: (202) 693-1999; teletypewriter (TTY) number: 1-877-889-5627. This guidance document is not a standard or regulation, and it creates no new legal obligations. It contains recommendations as well as descriptions of mandatory safety and health standards. The recommendations are advisory in nature, informational in content, and are intended to assist employers in providing a safe and healthful workplace. The Occupational Safety and Health Act requires employers to comply with safety and health standards and regulations promulgated by OSHA or by a state with an OSHA-approved state plan. -
Wildfire Smoke and Your Health When Smoke Levels Are High, Even Healthy People May Have Symptoms Or Health Problems
PUBLIC HEALTH DIVISION http://Public.Health.Oregon.gov Wildfire Smoke and Your Health When smoke levels are high, even healthy people may have symptoms or health problems. The best thing to do is to limit your exposure to smoke. Depending on your situation, a combination of the strategies below may work best and give you the most protection from wildfire smoke. The more you do to limit your exposure to wildfire smoke, the more you’ll reduce your chances of having health effects. Keep indoor air as clean as possible. Keep windows and doors closed. Use a Listen to your body high- efficiency particulate air (HEPA) and contact your filter to reduce indoor air pollution. healthcare provider Avoid smoking tobacco, using or 911 if you are wood-burning stoves or fireplaces, burning candles, experiencing health incenses or vacuuming. symptoms. If you have to spend time outside when the Drink plenty air quality is hazardous: of water. Do not rely on paper or dust masks for protection. N95 masks properly worn may offer Reduce the some protection. amount of time spent in the smoky area. Reduce the amount of time spent outdoors. Avoid vigorous Stay informed: outdoor activities. The Oregon Smoke blog has information about air quality in your community: oregonsmoke.blogspot.com 1 Frequently asked questions about wildfire smoke and public health Wildfire smoke Q: Why is wildfire smoke bad for my health? A: Wildfire smoke is a mixture of gases and fine particles from burning trees and other plant material. The gases and fine particles can be dangerous if inhaled. -
Fundamentals of Applied Smouldering Combustion
Western University Scholarship@Western Electronic Thesis and Dissertation Repository 6-20-2018 10:00 AM Fundamentals of Applied Smouldering Combustion Marco Zanoni The University of Western Ontario Supervisor Gerhard, Jason I. The University of Western Ontario Co-Supervisor Torero, Jose L. The University of Western Ontario Graduate Program in Civil and Environmental Engineering A thesis submitted in partial fulfillment of the equirr ements for the degree in Doctor of Philosophy © Marco Zanoni 2018 Follow this and additional works at: https://ir.lib.uwo.ca/etd Part of the Environmental Engineering Commons, and the Heat Transfer, Combustion Commons Recommended Citation Zanoni, Marco, "Fundamentals of Applied Smouldering Combustion" (2018). Electronic Thesis and Dissertation Repository. 5410. https://ir.lib.uwo.ca/etd/5410 This Dissertation/Thesis is brought to you for free and open access by Scholarship@Western. It has been accepted for inclusion in Electronic Thesis and Dissertation Repository by an authorized administrator of Scholarship@Western. For more information, please contact [email protected]. Abstract Smouldering combustion is defined as a flameless oxidation reaction occurring on the surface of the condensed phase (i.e., solid or liquid). Traditional research on smouldering was related to economic damages, fire risk, and death, due to the release of toxic gases and slow propagation rates. Recently, smouldering has been applied as an intentional, engineering technology (e.g., waste and contaminant destruction). Smouldering involves the transport of heat, mass, and momentum in the solid and fluid phases along with different chemical reactions. Therefore, numerical models are essential for the fundamental understanding of the process. Smouldering models either neglected heat transfer between phases (i.e., assumed local thermal equilibrium) or employed heat transfer correlations (i.e., under local thermal non- equilibrium conditions) not appropriate for smouldering. -
EMPLOYEE FIRE and LIFE SAFETY: Developing a Preparedness Plan and Conducting Emergency Evacuation Drills
EMPLOYEE FIRE AND LIFE SAFETY: Developing a Preparedness Plan and Conducting Emergency Evacuation Drills The following excerpts are taken from the book Introduction to Employee Fire and Life Safety, edited by Guy Colonna, © 2001 National Fire Protection Association. EXCERPTS FROM CHAPTER 3: Quick Tip Developing a Preparedness Plan To protect employees from fire and other emergencies and to prevent Jerry L. Ball property loss, whether large or small, companies use preparedness plans Fire is only one type of emergency that happens at work. Large and (also called pre-fire plans or pre- small workplaces alike experience fires, explosions, medical emergen- incident plans). cies, chemical spills, toxic releases, and a variety of other incidents. To protect employees from fire and other emergencies and to prevent property loss, whether large or small, companies use preparedness plans (also called pre-fire plans or pre-incident plans). The two essential components of a fire preparedness plan are the following: 1. An emergency action plan, which details what to do when a fire occurs 2. A fire prevention plan, which describes what to do to prevent a fire from occurring Of course, these two components of an overall preparedness plan are inseparable and overlap each other. For the purposes of this discus- sion, however, this chapter subdivides these two components into even smaller, more manageable subtopics. OSHA REGULATIONS uick ip Emergency planning and training directly influence the outcome of an Q T emergency situation. Facilities with well-prepared employees and Emergency planning and training directly influence the outcome of an well-developed preparedness plans are likely to incur less structural emergency situation. -
Oxygen-Enriched Combustion
Energy Tips – Process Heating Process Heating Tip Sheet #3 • September 2005 Industrial Technologies Program Suggested Actions Oxygen-Enriched Combustion • Use current or projected energy costs with PHAST to estimate When a fuel is burned, oxygen in the combustion air chemically combines with energy savings from oxygen- the hydrogen and carbon in the fuel to form water and carbon dioxide, releasing enriched combustion. heat in the process. Air is made up of 21% oxygen, 78% nitrogen, and 1% other • Contact furnace or combustion gases. During air–fuel combustion, the chemically inert nitrogen in the air dilutes system suppliers to calculate the reactive oxygen and carries away some of the energy in the hot combustion payback or return on investment. exhaust gas. An increase in oxygen in the combustion air can reduce the energy • Include the cost of oxygen or loss in the exhaust gases and increase heating system efficiency. of the vacuum pressure swing adsorption unit in the calculations. Most industrial furnaces Figure 1. Oxygen-enriched burner that use oxygen or oxygen- Resources enriched air use either U.S. Department of Energy— liquid oxygen to increase For additional information on the oxygen concentration process heating system efficiency, in the combustion air or to obtain DOE’s publications and vacuum pressure swing Process Heating Assessment and adsorption units to remove Survey Tool (PHAST) software, some of the nitrogen and or learn more about training, Courtesy Air Products increase the oxygen visit the BestPractices Web site at www.eere.energy.gov/industry/ content. Some systems use almost 100% oxygen in the main combustion header; bestpractices.