Safety in gas welding, cutting and similar processes page 4 of 11 explosion when cutting up or repairing tanks, drums and tyres figure 2 cutting up scrap if a welding blowpipe or burner is used on a tank or drum containing flammable material solid, liquid or vapour, it can explode. Pdhonline course m564 10pdh welding technology quiz. Lecture notes welding and joining processes materials. On the back of the hot work permit is found fire safety instructions 29 cfr 1910 252a which must be read and understood by the persons. It is vital to our economy and therefore vital information for all. Welding and cutting free download as powerpoint presentation.
When selecting an appropriate filter, the following factors shall be kept in mind. An authoritative source of reference on every aspect of thermal welding and associated cutting processes. The equipments used for gas cutting is similar to that of gas welding except that the welding torch is replaced by a special designed cutting torch. Weldingmart is a trusted worldwide distributor of quality welding supply products, tools, and materials. Gas welding gas welding is a welding process that melts and joins metals by heating them with a flame caused by a reaction of fuel gas and oxygen. It allows for things to be conjoined that may have not been thought to be possible. Page 1 of 10 purpose the purpose of this program is to assure a safe work environment during welding, cutting, and hot work operations. Experience gained from user contact and welding training of crewmembers showed that. Welcome to a better way of cutting, welding, brazing and heating with boc gas equipment. To begin oxygenacetylene welding or cutting, open the cylinder valves slowly by means of the cylinder keys. This document has been prepared by boc limited abn 95 000 029 729 boc, as general information. The equipments used for gascutting is similar to that of gaswelding except that the welding torch is replaced by a special designed cutting torch.
Gas welding and cutting oxyfuel welding, commonly referred to as oxy welding or gas welding is a process of joining metals by application of heat created by gas flame. Ferroline shielding gases for unalloyed and lowalloyed steels inoxline shielding gases for highalloyed steels aluline shielding gases for aluminum and nonferrous. Safety in gas welding, cutting and similar processes hse. Table 1 summarizes common shielding gases used for these main arc welding processes by base material type.
Learn about applied metallurgy, welding process applications, safety and troubleshooting. Improperly applied grounding clamps during electric arc welding. Fundamentals of gas cutting and welding ced engineering. A credit bearing skills programme offered on a fulltime 5 days. Oxygenacetylene weldingcutting underground page 2 of 3 job steps potential hazards safe job procedures 4. Gas cutting basics of gas welding basics of gas cutting types of flames in gas welding gas welding flames neutral flame carburising flame oxidising flame equipments used in gas welding gas. The process uses shielding from an externally supplied gas to protect the molten weld pool. The intense heat generated with this arc melts the base metal and allows the joining of two components. Welding is the most economical and efficient way of joining things together permanently. Tanakas portable machines guarantee cost reduction in thermal cutting work. The most commonly used method is oxyacetylene welding, due to its high flame temperature. Nissan tanaka corporation productregulator for cutting. Understand the complete range of welding practices.
Find materials for this course in the pages linked along the left. Various models for cutting straight line, circle shape or pipe etc. Cleaning of cuts including removal of scale, spatter, soot and removal of sharp edges. Development of a welding cost estimation model based on 153 4. Before connecting a regulator to a gas cylinder, open the cylinder valve for a moment. Control and safety solution engineering equipment flashback arrestor 8530 vivangas witt flashback arrestors for reliable protection against. Acetylene gas c2h2 is dissolved in acetone liquid and stored at 250 psi, in a specially designed cylinder. Do not perform any hot work electric or gas welding, cutting, and brazing or. Risk management division 310 centennial office bldg 658. Most farms and small shops have some type of equipment for welding and cutting metals. Manual metal arc welding, department of training and. Refer to the intent of ontario fire code article 5.
The risk from fatal injuries alone is more than four deaths per thousand workers over a working lifetime. Why should oil or grease not be used for lubrication of welding and cutting equipment. For further information, refer to american national standard z49. Why should acetylene gas not be piped through copper or high copper content alloy, tubing, piping or fittings.
This is often done by melting the workpieces and adding a filler material to form a pool of molten material the weld pool that cools to become a strong. Open the fuel gas control valve on the blowpipe and adjust the. Welding is a fabrication or sculptural process that joins materials, usually metals or thermoplastics, by causing coalescence. The intensity of radiation, and thus degree of protection required, depends. For this reason, gas welding and flame cutting fumes should. However, detailed information on shielding gases can be found in lincoln electric s gmaw welding guide booklet c4. Ahw atomic hydrogen welding caw constricted arc welding tig tungsten inertgas arc welding mig metal inertgas arc welding mag metal activegas arc welding pjw plasma jet welding paw plasma arc welding pjpw plasma jet plasma arc welding gmgmma gasmixture shielded metalarc welding magm magc co2shielded metalarc welding ngw narrowgap welding. Introduction statistics welding, cutting, brazing and other hot work are hazardous activities that pose a unique combination of both safety and health risks to more than 500,000 workers in a wide variety of industries.
The mode to use for plasma, laser, gas welding and cutting applications, the lens starts working when it senses a cutting arc. Welding or face shield, as applicable, shall have flame resistant hoods securely permanently attached. Processes of arc welding introduction welding is a powerful technological advance. Ahw atomic hydrogen welding caw constricted arc welding tig tungsten inert gas arc welding mig metal inert gas arc welding mag metal active gas arc welding pjw plasma jet welding paw plasma arc welding pjpw plasma jet plasma arc welding gmgmma gas mixture shielded metalarc welding magm magc co2shielded metalarc welding ngw narrowgap welding. Safety instructions for parweld gas welding and cutting equipment.
To begin oxygenacetylene welding or cutting, open the. Cutting 4 burn explosion falling objects fire sliptrip 4. Sparks can travel as much as 35 feet, and spatter can bounce on the floor or fall through openings creating hazards in other work areas of our. Nfpa standard 51, oxygenfuel gas systems for welding and cutting, obtainable sames as item a. General welding and cutting requirements worksafebc. Mar 08, 2017 image result for welding welding is a fabrication or sculptural process that joins materials, usually metals or thermoplastics, by causing fusion, which is distinct from lower temperature metaljoining techniques such as brazing and soldering, which do not melt the base metal. Welding, cutting, and brazing welding is a process that joins materials together by melting a metal work piece along with a filler metal to form a strong joint. The oxyacetylene and other oxyfuel gas mixtures welding torch remains a mainstay heat source for manual brazing and braze welding, as well as metal.
Gas metal arc welding gmaw, by definition, is an arc welding process which produces the coalescence of metals by heating them with an arc between a continuously fed filler metal electrode and the work. Model safety program welding, cutting, and brazing safetyrelated work practices program 1. The risk from fatal injuries alone is more than four deaths per. Persons performing arc welding and cutting must be properly instructed and qualified to operated such equipment and, if performing gas shielded. Scribd is the worlds largest social reading and publishing site. Safety training resources including powerpoints, audio presentations, tool box talks, meetings, handouts, and quizzes, all complete with trainers resources for easy training. Welding and cuttingpdf university of hawaii at manoa. Used for outdoor or low current welding, the lens starts working when it senses the weld current. About us proline welding supplies formerly welding supplies ltd offers a wide range of quality welding machines and consumables for the professional welder along with supporting advice and back up service. Risk management division 310 centennial office bldg 658 cedar. Do not open suddenly or there may be serious damage to the regulator and the possibility of an accident. The fuel gas commonly acetylene, when mixed with proper proportion of oxygen in a mixing chamber of welding torch, produces a very hot flame of about 57005800f. Safety instructions for parweld gas welding and cutting.
Braze welding in brazewelding as distinct from fusion welding the melting temperature range of the filler material is lower than that of the parent materials being joined. Welding or cutting operations without authorization shall be permitted only in. Fundamentals of gas cutting and welding cedengineering. Safety and health at work for gas welding and flame cutting. Welding, burning, and cutting environmental health and safety. The course will address all persons in the manufacturing industry to achieve advanced skills in gas cutting required by using the oxyacetylene process.
Welding, cutting, and allied processes supersedes ansi z49. Concoa publication ade 872, safe practices in welding and cutting. Backed by over 100 years of industry expertise, we deliver productive solutions for a safer, more knowledgeable you. Welding supervisors, welding instructors, welding examiners, welding quality control coordinators, heat treatment operatives, cathodic inspection personnel, plant inspectors, underwater inspectors, plastics welders and ndt personnel, in accordance with bs en isoiec 17024.
The owners have been servicing the engineering and welding industry for over 25 years and have built a strong reputation for providing technical know. Representing over 280 manufactures, we provide access to over 25,000 industrial tools, equipment, and supplies available to purchase online. Welding, cutting, hot work welding, cutting, hot work. Oxyfuel welding commonly called oxyacetylene welding, oxy welding, or gas welding in the u.
As a result of this, the process of brazewelding requires a lower temperature than that required for. Scope this program is applicable to all employees directly involved or assisting in the welding, cutting and hot work operations. Oxyacetylene gas cutting techniques manual manipulation, angle, burned edges, flame and pressure setting. This heat is further used to melt interface surfaces of welding plates which are held together to form a joint. Cleaning tools including but not limited to wire brushes, chipping hammer, and chisels. Analytic method calculation of the welding time to estimate the feature welding time for an assemblage, we propose an approach based on the evaluation of the welding section from a geometric modelling. In order to discuss the various aspects of welding, cutting and brazing safety, first we need to cover the basics in this first module. Management must clearly state objectives and show its commitment to welding safety management must be certain that only approved welding, cutting, equipment are used. Oxygenacetylene welding, or gas welding, is a process which relies on.
Each process is examined clearly and comprehensively from first principles through to more complex technical descriptions suited to those who need more technical information. However, the requirements of this standard are generally applicable to the other welding processes such as submerged arc welding and allied processes shown in the american welding society master chart of welding and. Cutting blowpipe shank mixer welding nozzle cutting nozzle welding blowpipe parweld gas welding and cutting equipment instructions for use safety trained personnel should only use gas welding and cutting equipment. Check area for methane before starting and continuously thereafter while cutting or welding. Welding argon i1 100 gas sensitive materials like special titanium, aniobium, tantalium inoxline n1 98,75 1,25 inoxline n2 n2 97,50 2,50 duplex, superduplex inoxline he15 n1 83,75 15 1,25 inoxline he15 h2 n z 82,985 15 2 0,015 nickelbase alloys tig welding mag welding of mild steel root shielding din en iso 14175 product group composition. Provides information about the safety requirements for welding and cutting processes. Oxyfuel welding, commonly referred to as oxy welding or gas welding is a process of joining metals by.1368 837 978 254 1134 1315 1412 796 1313 274 1082 758 1335 1365 381 542 707 87 284 963 1160 817 780 1385 655 94 312 1405 946 983 1049 1170 1432 1218 547 1245 1227 1202 583