Acetylene Safety Precautions

Ethyne, Ethine, Dissolved Acetylene. Do not attempt to interchanges oxygen and acetylene regulators. Acetylene cylinders are heavier than other. OSHA provides basic fire prevention and protection precautions to follow in the welding, cutting and brazing standard found in 29 Code of Federal Regulations (CFR) 1910. Acetylene that is suddenly compressed from 1 to 20 bar can reach temperatures of 250 – 300°C, which under unfavourable conditions can trigger acetylene decom-position. Acetylene Safety Data Sheet according to the Hazardous Products Regulation (February 11, 2015) 05/08/2017 EN (English) 3/8 Specific methods : Use fire control measures appropriate for the surrounding fire. Additional precautions are necessary when working with oxy-gas equipment. Acetylene is a compound of carbon and hydrogen, produced by the reaction of water and calcium carbide. The following oxyfuel welding safety precautions should be observed: Do not experiment with torches or regulators in any way. A request for a permit shall be made to the Maintenance Manager or Maintenance Supervisor on the day that the natural gas. For safety reasons, the acetylene is dissolved in acetone (Flam. Exposure controls and personal protection. - Wear proper personal protective equipment, including hard hats, safety boots, eye protection, and gloves. Use striker to ignite torch Potential gas accumulation Spark production (could ignite other material) Safety glasses, work gloves 1h. SAFETY MEETING TOPIC: Cutting and Welding…Hot Work Provided by: Hellman & Associates, Inc. Code of Practice: Safety and Health at Work for Gas Welding and Flame Cutting 4 2 Responsibilities of Persons Concerned 2. For tank, rail car or tank truck: Stop leak if possible without personal risk. Acetylene cylinders require special precautions and must be stored and handled with extreme care. Use protective gloves, apron and face shields when decanting large amounts. Never tamper with the safety devices on cylinders, fuse plugs, safety discs, etc. Acetylene is a compound of carbon and hydrogen, produced by the reaction of water and calcium carbide. Acetylene may continue to be a hazard after a external fire has been extinguished, due to the decomposition of the acetylene. combustion of the acetylene takes place outside the flask due to the lack of available oxygen in the flask. A flashback can trigger decomposition of the acetylene in the fuel hose, in the regulator and in the cylinder itself. Read all Instruction, SAVE THESE INSTRUCTION Safety, Set-Up, and Operating Instructions Gas Welding, Cutting, Brazing & Heating There are many hazards to be considered when using oxy-fuel welding, cutting, brazing and heating equipment. Gas welding/cutting entails heat being applied to the metal by the flame from a torch in which a gas, such as acetylene, is burnt with a supply of oxygen or air. If flames are accidentally extinguished, explosive reignition may occur; therefore, appropriate measures should be taken (e. Never use acetylene at pressures exceeding 103. The sections below contain a list of safety precautions, tips, and information outlined by the Canadian Propane Association. You must wear 100% cotton overalls as it does not catch on fire from sparks and molten metals flying around. Acetylene is very different from city or furnace gas. Acetylene cylinders must be kept and used in an upright position and must never be used at a pressure exceeding 15 psi. Welding, Cutting, and Brazing MODULE 16 Hazards of Welding Operations Fire hazards Metal splatter Electric shock Explosion hazards Released gases – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow. Not for consumer sale or use. (1) Always use goggles of proved design (as per Factories Act) when welding and cutting. : For safety reasons, the acetylene is dissolved in dimethylformamide (CAS # 68-12-2; Repr. Globules of hot slag can roll along the deck for long distances. Store acetylene cylinders in an upright position. that medical personnel are aware of the material(s) involved, and take precautions to protect themselves. 58 / Monday, March 26, 2012 / Rules and Regulations 04/23/2019 EN (English US) 4/10. Acetylene is a highly flammable gas so it should be kept away for oxygen. Never use acetylene at pressures exceeding 103. Avoid excessive water spray application. Dry chemical powder. Objective #5. Acetylene cylinder bundles require parti-cular attention in this regard. Fire-fighting measures Suitable extinguishing media Water spray. 1639 - came into force on 1 October 2014. Acetylene bottle with hose and torch, text Blaine show contact info. If your workplace keeps spare acetylene and oxygen cylinders, store them separately to minimise the potential for harm if an incident involving a set of cylinders occurs. 79-01-6 Acetylene Trichloride (Trichloroethylene ) 2A. 1 General safety precautions 33 3. the torch oxygen valve, then close the acetylene valve. Safety devices on cylinders or apparatus shall not be tampered with or removed Oxygen cylinders shall not be stored in the same compartment with cylinders of acetylene or other fuel gas. Specific gas cylinder storage guidelines includes additional precautions and guidelines for oxygen, hydrogen, and acetylene and liquefied fuel gas cylinders. Acetylene (chemical formula C 2 H 2): a fuel gas made up of carbon and hydrogen. Slight intoxication with reversible narcosis may occur at 10%; marked intoxication with dyspnea, headache, and staggering gait at. txt) or view presentation slides online. This course introduces the student to the hazards and safety precautions related to welding, cutting, brazing and soldering. Do not use oxygen regulators with acetylene cylinders. Consumer use. Close-fitting safety goggles may be necessary in some circumstances to prevent eye contact with dust and fume. Parts should be mentioned using their correct names, and if any safety precautions are missing the list cannot be turned in as complete. The free PDF documents below provide clear help in addressing common safety and health concerns. -Oxygen -Acetylene • Handling, storage, and equipment safety features • Safety considerations and precautions • What to do in the event of an emergency Oxygen & Acetylene Safety TRAINING SOURCE: Safety Division, Central Welding Supply, www. The current ANSI/AIAA standard for hydrogen safety guidelines is AIAA G-095-2004, Guide to Safety of Hydrogen and Hydrogen Systems. Knowledge and precautions can prevent fires and violent explosions. POWER MITRE SAW There is a high incidence of injury for those who use a 'chopsaw. Always secure cylinder to a stand or a wall. General Precautions – Ensure only trained employees operate oxygen-acetylene equipment. Gas Cylinder Safety, Part I — Hazards and Precautions John V. APPENDIX A – presents precautions that should be followed to minimize, control, or eliminate these safety hazards. only steel or wrought iron. Always handle acetylene cylinders with extreme care to prevent damage to the safety fuse plug or valves. The class also provides an overview of guideline-setting organizations, such as OSHA and ANSI. 3 Safety of rubber hose-pipes 35 3. Have the group walk to a nearby compressed gas storage area and complete a practice inspec-tion. regulations for flammables such as oxygen, acetylene, corrosives, etc. ’ This reduces the hazards involved in filling, transport and use. Acetylene is a compound of carbon and hydrogen, produced by the reaction of water and calcium carbide. 79 m 3) is prohibited in buildings with other occupancies. Acetylene 001001 Synthetic/Analytical chemistry. Consult the Air Products Safety Data Sheet (SDS) and Safetygrams for safety information on the gases and equipment you will be using. Acetylene reacts with silver, copper and lead to form sensitive, explosive salts. : For safety reasons, the acetylene is dissolved in acetone (CAS # 67-64-1; Flam. Open the acetylene valve about ¼ turn to light an acetylene torch. Acetylene is a colorless, combustible gas with a distinctive odor. In a confined area, NIOSH approved respiratory protection may be required. State-of-the-Art Equipment and Extra Safety Precautions August 2015 – CryoGas International 35 The Siphon 100 tank also has a complete vacuum-jacketed piping system. And the top ten welding safety tips are 1. Therefore storage of acetylene in cylinders requires special precautions in order to avoid explosive decomposition. Best Safety Practices When Handling Butane Butane is one of the most powerful and popular fuel sources used around the world. Environmental precautions Try to stop release. mean it has 225 cubic feet of acetylene in it. In addition to the acetylene, oxygen is widely used too for gas cutting. Observers should also use proper protection. Working with industrial gases can be a dangerous proposition. Evacuate area. Storage, Transport and Handling of Cryogens Guideline for information on vapour from s. Acetylene may continue to be a hazard after a external fire has been extinguished, due to the decomposition of the acetylene. Contact may irritate or burn skin and eyes. For additional precautions in using acetylene see Section 16 - Other Information. Or, divide them with a right firewall. 38 inch tall acetylene tank, 52 inch oxygen tanks are still over half full, comes with 2 cutting torches and hose. Use protective gloves, apron and face shields when decanting large amounts. Home Oxygen Safety Tips. DISCLAIMER OF LIABILITY Before using this product in any new process or experiment, a thorough material. Know the location and use of all fire equipment in the laboratory. Electrical equipment should be non-sparking or explosion proof. Page 2 of 11 Safety Data Sheet. Never use oil or grease on or around Oxygen equipment. Personal precautions, protective equipment and emergency procedures Wear safety glasses with side shields. Always keep the wrench or key for the acetylene cylinder on the cylinder while in use. Pressurized container: Do not pierce or burn, even after use. Background:. TESCOM Acetylene Panels are central gas supply units for Acetylene 2. acetylene in a safe condition inside the cylinder. 06/19 - Safety in Storage, Handling and Distribution of Liquid Hydrogen Doc. Safety precautions for using supplemental oxygen The following precautions will keep those who need to use supplemental oxygen safe. Finally, we have to discuss the mighty dollar, which is often the biggest influencer in many business decisions. ) Following the Oxy-Acetylene welding/cutting safety precautions is the only way to ensure the safety of the process. And the top ten welding safety tips are 1. What’s new in the January 1, 2019 Occupational Health and Safety Code • Part 18 Adds language to Section 233 that prohibits employers from requiring footwear that may pose a health and safety risk to workers. A Safety Data Sheet, formerly known as a Material Safety Data Sheet (MSDS), is a critical piece of workplace safety and product stewardship. GAS CYLINDER SAFETY MANUAL Doc No-IITB/ISM-05 Rev- 0 Page 3 of 27 Scope This manual is applicable for all research activities in the Institute which use gas cylinders. For all Employees, Instructors and Students who will be working with oxyacetylene welding equipment and 3. 38 inch tall acetylene tank, 52 inch oxygen tanks are still over half full, comes with 2 cutting torches and hose. Never use damaged equipment. Students are required to pass the arc welding safety test before moving on to O/A safety. Prevent from entering into soil, ditches, sanitary sewers, waterways and/or groundwater. WHMIS 2015 sets out requirements for safety data sheets (SDS) in Part 4 of the Hazardous Products Regulations (HPR). safety zone all around. Suite 210 Ithaca, NY 14850 607. Do you need a licence/permit to use and store oxy/acet at home in a shed or garage? Or is is just a case of taking all necessary safety precautions, notifying the fire brigade and checking your house insurance?. Wash contaminated clothing before reuse. HANDLING AND STORAGE HANDLING PRECAUTIONS Keep away from heat and direct sunlight. Make sure you know what is in your solder, it is not always apparent on the reel label. Precautions include: Do not use near ignition sources (except for protected fuel gases). Modern-day instruments have built-in safety interlocks which allow flame ignition only when all safety conditions are complied with. Acetylene reacts with silver, copper and lead to form sensitive, explosive salts. Acetylene is a colorless, combustible gas with a distinctive odor. All cylinders, particularly acetylene, should be restrained securely in an upright position to prevent accidents. The oxyacetylene process produces a high temperature flame, over 3000 degrees C, by the combustion of pure oxygen and acetylene. the material(s) involved, and take precautions to protect themselves. Always refer to acetylene by its full name and not by the word “gas” alone. Introduction. The safety valve trips an alarm that sounds to make locating the cylinder easier. Eye protection – Safety glasses should be worn. Handling and Use of Gas Cylinders and Equipment. How to Set Up an Oxy Acetylene Torch. While acetylene plant is designed and developed, a lot of precautions should be taken in order to evade fire or explosions. It doesn't describe how to use the torch for silver soldering in jewelry making. Always use goggles when welding or cutting. ) Following the Oxy-Acetylene welding/cutting safety precautions is the only way to ensure the safety of the process. This step is an important one for the safety of you and others in the vicinity, so don't skip it. Store and use with adequate ventilation. All personnel who are involved or responsible for the handling and storage of medical gases (supplied in cylinders or distributed by medical gas pipelines), should have a sound knowledge of the properties of. Explosion-proof general and local exhaust ventilation. Procedure Steps Work Location / Safety Equipment Precautions All the following procedures must be conducted in a fume to minimize any potential inhalation. Safety and health professionals must be familiar with the various types of fire extinguishing equipment and be able to specify the proper selection. Never tamper with the safety devices on cylinders, fuse plugs, safety discs, etc. These should be readily accessible from the soldering station. View and Download PowerPoint Presentations on Welding And Cutting Safety PPT. Weldingtipsandtricks. 3 Handling of Cylinders 9 3. In this notice, we discuss recent acetylene incidents, requirements in the Hazardous Materials Regulations, national consensus standards issued by the. and Safety web pages. Special Safety Precautions To Prevent Fires Caused By Welding. 5% to 100% by volume in air) and with a comparatively low ignition temperature. Evacuate area. Safety Resources GAWDA: Safe Cylinder Handling Guidelines Harris: Oxy-Fuel Torch & Regulator Safety Guidelines Lincoln Electric: Arc Welding Safety Lincoln skip to Main Content Menu. Exposure to thermal and chemical hazards are covered, as well as precautions including the personal protective equipment required to mitigate those hazards. 2, STOT SE 3) in the gas container. DO NOT BREATHE FUMES. Acetylene is a compound of carbon and hydrogen, produced by the reaction of water and calcium carbide. Acetylene may continue to be a hazard after a external fire has been extinguished, due to the decomposition of the acetylene. APPENDIX A – presents precautions that should be followed to minimize, control, or eliminate these safety hazards. Even small leaks can cause a flash fire or explosion,. Precautions, Prevention Follow the safety standards established by federal, state, local governments, American Welding Society, and National Fire Protection Association. Equipment safety checks. P271 - Use only outdoors or in a well-ventilated area. Linde's latest generation of injector burners and innovative control and safety technology are designed to prevent the formation and ignition of an acetylene/ air mixture to provide maximum safety. 5% ethylene with not more than 22. Clean up methods Ventilate area. It just gets ignored until there is a problem. 2 Clothing 4 1. The commonly used fuel gases include acetylene and Liquefied Petroleum Gas (LPG). A mixture of oxygen and acetylene, burns as an intense / focussed flame, at approximately 3,500 degrees centigrade. Do not cut within 30 to 40 feet of unprotected combustible materials. Argon Argon Material Safety Data Sheet Commercial name(s). In spite of the hot, sharp tools and equipment required in this line of work, industry professionals can take many precautions to stay safe and prevent injuries every day. Following precautions should be taken to avoid fire hazards on all oxy-acetylene cut­ting and welding: (a) Keep hose and cylinder valves free from grease and oil. 2 It is singular indeed that a school manual, devoted. PRODUCT AND COMPANY IDENTIFICATION more than a few hours may cause nasal stuffiness, cough,. Instrument inspection. TESCOM Acetylene Panels are central gas supply units for Acetylene 2. Proper storage and maintenance of equipment containing oxygen and acetylene should be part of the safety program, and include best practices on storage locations, distance from the wellhead, and proper maintenance and inspections. The following information regarding the safe use of this equipment will help reduce accidents and injuries. Safety is a full-time responsibility. These are tinted to protect your eyes from the bright light. This is a web-friendly version of leaflet INDG327. Torch Safety. Store acetylene cylinders in an upright position. ECOLOGICAL INFORMATION Ecotoxicity: No known effects 10. Never touch the element or tip of the soldering iron. 5% in air is reported to be nontoxic. For all Employees, Instructors and Students who will be working with oxyacetylene welding equipment and 3. 2) Extinguishing Media: An acetylene fire from wet CaC2 should not be extinguished. SDSs provide a standard for collecting and providing information on chemicals, chemical compounds, and mixtures. Construction Safety Inspection Checklist precautions, PPE and rescue documented? Oxygen/acetylene torch units have flash back arrestors?. Download an e-certificate immediately upon completion of the course. Operators should be trained to properly transport, install, connect and maintain their gas supplies, as well as to deal with. Fire-fighting measures Suitable extinguishing media Water spray. Although a highly versatile and functional gas, acetylene also has hazardous potential. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. 1 The Gases Used 8 2. Precautions to be taken when a backfire occurs: • Close both the oxygen and acetylene station or cylinder valves immediately. OXY-ACETYLENE WELDING AND/OR CUTTING. How to Set Up an Oxy Acetylene Torch. org Safe use of acetylene This document is for people who use acetylene for welding, cutting and similar processes. The acetylene gas is dissolved into a liquid solvent within the cylinder to improve the acetylenes chemical stability. SAFETY DATA SHEET #001 1. This course provides participants with entry level Oxygen-Acetylene Safety Awareness training. adequate. the oxy-acetylene rig. Acetylene cylinder bundles with 6 or 16 acetylene cylinders (model 46 or 61) use a ball valve. Highlights include: A responsible individual must inspect the area and identify precautions to be taken preferably on a written Hot Works permit. Use HAZWOPER On Mobile to work from any device and your progress will be saved right where you left off. SAFETY CHECK VALVES MUST BE INSTALLED BEFORE WELDING!. The commonly used fuel gases include acetylene and Liquefied Petroleum Gas (LPG). combustion of the acetylene takes place outside the flask due to the lack of available oxygen in the flask. The intense light of the flame is very harmful to the eyes and small flying particles of burning metals may cause serious damage to the eyes. Respiratory protection – Approved respiratory equipment. As such these precautions and procedures should be observed to ensure the safety of handlers: Always wear protective googles, gloves and a lab coat, as concentrated H 2 SO 4 causes serious damage to skin and clothing, charring it (see dehydration of sucrose). Consumer use. Safety precautions when operating welding equipment vary considerably because of the different types of equipment involved. Have an adequate fire extinguisher readily available. Metalworking is the process of working with. 2, Eye Irrit. Open axygen valve on torch body. Do not accept compressed gas cylinders from the supplier unless they are properly labelled and have protective valve caps in place. Welding necessitates careful risk assessment and the provision of good procedures, but it is not difficult to provide protection for welders that makes the job no more hazardous than any other workshop practice. 4 SAFE WORK PRACTICES Safe work practices for all welding operations include: • Placing work at an optimal height to avoid back strain or shoulder fatigue. The Compressed Gas Cylinder Safety course is an online, self-paced class that allows you to work at your own convenience. Unusual Fire and Explosion Hazards Acetylene is extremely flammable and can readily form explosive mixtures with air over a very wide range. Secure the oxygen and acetylene tanks in the torch cart. Always follow these basic safety rules when working with oxy-fuel equipment: Chain cylinders to prevent their falling over. Environmental precautions Try to stop release. Consult Material Safety Data Sheets and Safetygrams for the particular gases being used. Pair that with the compressed gas cylinders necessary to operate that tool, and you have a dangerous career that requires immense focus, and an attitude for safety. Hold wires to be heated with tweezers or clamps. Other rules relating to the use of high-pressure gas bottles/cylinders/ containers also apply. Acetylene is very flammable. They must be securely fastened to prevent shifting or falling. The older cylinders contained asbestos or cellulose fiber while newer cylinders are asbestos free. Standard precautions will be perfectly adequate - the leftover is caustic and the acetylene is flammable (perhaps even explosive is some concentrations), so gloves/glasses and ventilation are required, but there is nothing extraordinary here. Prevent from entering into soil, ditches, sanitary sewers, waterways and/or groundwater. Personal Precautions: Persons responding to an accidental release should wear protective clothing, gloves and a respirator in the event of a molten metal spill (see also Section 8). MATERIAL SAFETY DATA SHEET (MSDS) www. General Precautions – Ensure only trained employees operate oxygen-acetylene equipment. The following safety information is only a summary of the more complete information found in the Safety Standards listed at the end of these precautions. Store in upright position. Do not open acetylene cylinder valves more than 1½ turns. 0 Gases 8 2. This article throws light upon the four main health and safety precautions to be taken while welding. The current ANSI/AIAA standard for hydrogen safety guidelines is AIAA G-095-2004, Guide to Safety of Hydrogen and Hydrogen Systems. OXY-ACETYLENE WELDING AND/OR CUTTING. 1 Securing safety and health at work in an industrial undertaking requires the full commitment and co-operation of everybody concerned, from the proprietor to the workers. A torch ˜ame consumes ambient oxygen from the air as well as the cylinder supplied torch oxygen. This booklet can be used as a guideline for the safe use of compressed gas. Acetylene is a highly flammable gas so it should be kept away for oxygen. Oxygen cylinders should not be stored within 20 feet (6 meters) of highly combustible materials, oil, grease, wood shavings, or cylinders containing flammable gases. 101) Cylinders are stored only in designated areas. Never use damaged equipment. Acetylene cylinder bundles require parti-cular attention in this regard. Following are the guidelines for checking leaks on Acetylene and LP Gas Cylinders. S plate in flat position by Dip transfer. Acetylene hydrogenation (in an ethylene plant) is a highly exothermic reaction. Oxygen cylinders should not be stored within 20 feet (6 meters) of highly combustible materials, oil, grease, wood shavings, or cylinders containing flammable gases. How to Use a Cutting Torch. 100 Safety topics Book for daily toolbox talk. ACETYLENE BLACK GRANULAR Safety Data Sheet SECTION 14: Transport information In accordance with DOT / ADR / RID / ADNR / IMDG / ICAO / IATA 14. Acetylene Safety Data Sheet according to the Hazardous Products Regulation (February 11, 2015) 05/08/2017 EN (English) 3/8 Specific methods : Use fire control measures appropriate for the surrounding fire. 2 Clothing 4 1. Calcium carbide should be kept dry since exposure to water or moisture evolves flammable acetylene. With cart wheels are bent a little 4 ft tank with hoses and guages. The acetylene gas is dissolved into a liquid solvent within the cylinder to improve the acetylenes chemical stability. Proportions of oxygen and acetylene in the mixture can be adjusted to give a neutral, oxidising or carburising flame. acetylene, ethylene and propylene in mixture, refrigerated liquid containing at least 71. The Acetylene Safety (England and Wales and Scotland) Regulations - SI 2014 No. BIS(TRI-n-BUTYLSTANNYL)ACETYLENE Safety Data Sheet 01/07/2016 EN (English US) SDS ID: SNB1790 2/5 First-aid measures after eye contact : Immediately flush eyes thoroughly with water for at least 15 minutes. Use care when handling gas cylinders like oxygen, acetylene, propane, nitrogen, carbon dioxide, etc. , 1725 Jefferson Davis Highway,. Once refilled. Follow proper procedures and use the right equipment, including safety glasses, heavy-duty gloves and protective footwear. 79 m3) is prohibited in buildings with other occupancies. The Davy safety lamp was invented to eliminate the danger of gas or dust explosions in coal mines. This is achieved by filling the cylinder completely with a porous mass which. Uses advised against. Material Safety Data Sheet: Methane. Introduction. Welding necessitates careful risk assessment and the provision of good procedures, but it is not difficult to provide protection for welders that makes the job no more hazardous than any other workshop practice. Acceptable cutting/welding standards should be followed. This article should serve as a primer for welding safety. this cylinder. The correct procedure for lighting up the torch and its. Take precautionary measures against static discharge. Use a back flow preventive device in the piping. These guidelines DO NOT serve as a replacement for formal training in lab techniques or shop safety. Use only in well ventilated areas. When mixed together in correct proportions within a hand-held torch or blowpipe, a hot flame is produced with a temperature of about 3,200°C. Oxygen/Acetylene Set - $200 (Westbrook) < image 1 of 2 > B tanks with 25 feet hose, torches, cart and safety glasses. Not for consumer sale or use. Personal precautions: Wear personal protective equipment; see section 8. The machine must be isolated from the main electricity supply when not in use. Never use oil or grease on or around Oxygen equipment. OSHA, CMA, ANSI and Canadian WHMIS Standards OTHER OTHER PART I What is the material and what do I need to know in an emergency? 1. This safety advisory is addressed to persons involved in the use, operation, fabrication, or other handling of mobile acetylene trailers. Oxygen - Acetylene Cutting Equipment Sign - WF10 The Oxygen - Acetylene Cutting Equipment Sign is used to show exactly what PPE should be used, what equipment is required and what safety checks and precautions should be followed at all times. Eliminate all ignition sources if safe to do so. 1 The Gases Used 8 2. STRIVE FOR EXCELLENCE THROUGH PRACTICE, PRACTICE, AND MORE PRACTICE. Acetylene is very different from city or furnace gas. Never use Acetylene gas at a pressure over 15 psig. adjustment. This publication explains the safe use of solvents with acetylene. As a consequence of this potential hazard, acetylene is subject to specific legislation. It has a two stage reaction; the first stage primary reaction involves the acetylene disassociating in the presence of oxygen to produce heat, carbon monoxide, and hydrogen gas. Many rural households use propane to heat their homes and do other fulfilling day-to-day activities. Soldering Iron Safety. Do not use alloys containing more than 65% copper with acetylene. In all cutting operations, you must ensure that hot slag does not come in contact with combustible material. : For safety reasons, the acetylene is dissolved in dimethylformamide (CAS # 68-12-2; Repr. Welding Safety Procedures Printed copies of this document are uncontrolled. All cutting and welding operations performed at Tufts by Tufts personnel or contractors must be carried out in accordance with standards set forth by the American Welding Society and the appropriate American National Standards Institute (ANSI) standards concerning cutting and welding. A flashback can trigger decomposition of the acetylene in the fuel hose, in the regulator and in the cylinder itself. PRECAUTIONS FOR ACETYLENE PLANT BUILDING. Ideal for cutting and welding thin metal when you don't need a sharp flame such as that from an oxy-acetylene. Always use proper PPE (shield, goggles, gloves, clothing, etc. , and do not permit torch flames or sparks to strike the cylinder. Management should assess how often and for how long Toolbox Talks should be held in your company.