*'k/AQS )n0O_!30CEQiUccA45L~hJd|&Z%&ZYGaiHIs[?t[ LJX>X@{u1;~wIL_m]''WnF$M O9rPt& S>7eJYJ#Hre*'jmmApxcm`8)rrf| Your risk assessment should also address: Where welding is part of your work activity, you must carry out a risk assessment to identify what measures are required to control the risks from exposure to welding fume. v. Electric shock. ), or, adhesives (such techniques are under continuous development), using a consumable that produces less fume, using a welding process that produces less fume, making sure the metal has been properly cleaned and prepared, automating or mechanising the process or job, using other engineering controls such as LEV, a stock of spare parts for example, batteries and filters , compatibility with other personal protective equipment (PPE) you have provided for the task, for example a welding visor, effective general ventilation provides rapid fume clearance and a through draught to ensure that fume generated from welding is dispersed and removed. Otherwise, if tight-fitting RPE is used, it can become uncomfortable to wear, leading to workers loosening or removing the RPE. Also consider any other workers exposed to the welding fume, taking account of the level of general ventilation provided and excluding unprotected people from welding areas. Follow the guidance in SLIC Guidance for National Labour Inspectors on addressing health risks from Welding Fume to reduce the need for welding and to reduce the generation of welding fume for example, The specific controls for the welding task depends on the following (they should be documented in your risk assessment). Good general ventilation is usually sufficient to remove welding fume from low intensity resistance spot welding processes where the welding is on clean uncoated metal. Burns and eye injuries. To protect against splatter when welding, wear appropriate clothing that covers arms and legs, and use suitable gloves. If welding is part of your work activity, you must carry out a risk assessment to identify what measures are required to control the risks from exposure to welding fume. Hazards due to dangerous fumes and gases. Oxyacetylene welding or cutting is also called torch or gas welding or cutting. The important role building constructions play in the economy underlines the necessity for assessing hazards in these construction projects with a view of identifying the causes of hazards and their source in construction site which affects the successful completion of the projects. Keywords: Job Safety Analysis, Risk Analysis, Risk Assessment _____ I. Some components of welding fume, for example cadmium, can be fatal in a short time. The solutions are often simple and cost effective. hazard can cause illness, injury or equipment damage but the results would not be expected to be serious) 2 -SignificantInjury (e.g. Stray currents are more likely if the welding return path exhibits a high electrical resistance, for example the return is clamped onto a rusty surface rather than clean metal. Only trained forklift drivers to . Unlike factory welders, onsite welders will face highly variable circumstances and conditions. This watch should be maintained for at least 30 minutes after the completion of the hot work, but where an unintended ignition may be difficult to detect or slow to develop, this may need to be extended to 60 minutes. Wear goggles when chipping slag or wire brushing welds during preparation or finishing off work. -f,(H=&?hN>rA=%v!R+P<2@5qG:m-B_I)u4:= A precautionary approach is advised to control welding fume exposures to the lowest levels practicable. vii. (a) Open workshop (b) Open are (c) Semi-confined spaces (d) Confined spaces. Acetylene is very explosive, even in small amounts. The work area should be well ventilated with suitable local extraction also in place and /or with Respiratory Protective Equipment provided and worn. Welding gases such as argon, carbon dioxide, nitrogen and helium can displace the air inside enclosed spaces. Face fit testing for devices with a tight-fitting face seal will ensure the equipment selected is suitable for each worker. Where hot work cannot be carried out in a safe area, or where combustible material cannot be removed from the work area, a fire watch should be maintained during and after the hot work. Building construction projects form a bulk of construction projects in Ethiopia and are paramount in the areas of housing, business and public undertakings. (PDF) Assessing risks and control measures on a welding workshop in Malaysia Assessing risks and control measures on a welding workshop in Malaysia Authors: N. A. Shuaib Mohamed Syazwan Osman. Where exposure cannot be adequately controlled using engineering measures, then the welder must also wear appropriate respiratory protective equipment (RPE). Inert gases and some common chemical reactions (for example rusting) can reduce the amount of oxygen inside enclosed spaces such as tanks, pipes and pits. Clear away wood, fabric, cardboard and other flammable material before starting a welding job. These semi-transparent screens allow you to see enough to know that someone is welding, but the material filters out the harmful parts of the light. Some older MMA welding sets are built specifically to use an earth return cable that is shared between several welding sets. Created on 23/02/2010 Page 5 of 8 Some tasks require bespoke hoods. Some welding equipment suppliers may refer to this as EN ISO 25980. 2 0 obj endobj make sure you know what the emergency rescue plan is, never use oxygen supplies to 'sweeten' the air (this is a very serious fire risk), welding equipment conforms to the appropriate international (ISO) or British (BS) standards, installation of fixed welding equipment is carried out by a suitably qualified person and is connected as recommended by the manufacturer, the insulation on the welding and current return leads is undamaged and the conductor is thick enough to carry the current safely, all connectors are clean, undamaged and correctly rated for the current required, insulation on the welding cables, plugs, clamps or torch/electrode holder on welding equipment is undamaged, welders use the appropriate personal protective equipment for the task, position the welder inside a metal structure, for example inside a tank, position the welder on the metal workpiece. Hazards due to dangerous fumes and gases. The COSHH essentials sheet WL3 Welding Fume Control (PDF) gives more guidance. Interim Butt Weld Safety Assessment - MRP-44, Part 1 Appendix C: Welding Residual Stress Analysis Welding residual stress analyses performed for VC Summer and Ringhals nozzle-to-pipe butt welds Analyses show that hoop stresses exceed axial stresses under most conditions Axial stresses can exceed hoop stresses locally These include (not limited to) chromium (VI), nickel, manganese, ozone, Nitrogen oxides, carbon monoxide and chemicals generated by coatings etc. <> You should have an RPE management programme which includes: The HSE publication Respiratory protective equipment at work gives more guidance. The arc welding process requires a live electrical circuit. All these types of operations are associated with various hazards. Extracted benches are a good choice for medium and smaller welding jobs that can be brought over to the bench. Argon and carbon dioxide are relatively 'heavy' gases. For example, a car mechanic wearing RPE with good general ventilation in the workplace, carrying out an occasional short welding job on a car with a broken exhaust support bracket, would meet the minimum requirement for compliance. Academia.edu no longer supports Internet Explorer. Overalls or other clothing should be worn to minimise the amount of bare skin, particularly on arms and legs. On-torch extraction can be very effective for MIG welding, and you should assess if it is useful for your task. Fire & explosion. ACTIVITY: Palletised Bricks - Storage and Stacking. At the moment, HSE is not aware of any clear welding curtains that conform to BS EN ISO 25980. This means all arc welders using hand-held equipment are at risk of electric shock and electrical burns. iii. The welder is responsible for daily equipment checks and reporting defects. Enter the email address you signed up with and we'll email you a reset link. Resistance spot welding produces much less fume than other welding processes like MIG welding. Hazards associated with welding and cutting can be classified as: i. See, Weld cleaningfor example,specific precautions are required for use of pickling paste (refer to the Safety Data Sheet), using alternative cold joining techniques, Environment and location e.g. Without controls in place, workers will be exposed to welding fume.This video shows typical fume emissions arising from MIG welding. ix. Hazards associated with working at height. So the health and safety measures you should take may also change frequently. Companies who manage their slip and trip risks effectively can reduce these types of accidents. Welding Risk Assessment of Welders Exposure to the Released Contaminated Gases in Different Types of Welding Processes in a Steel Industry Authors: Younes Mehrifar Isfahan University of. RISK ASSESSMENT. The BOHS Selector Tool will help you select the right LEV for your workplace. risk assessment methodologies contributes to prevent and control undesired event i.e. Issue 3 June 18 Completion of this document converts it into a site specific assessment. Plan stacking area. American Welding Society nomenclature Other names Shielded Metal Arc Welding (SMAW) Stick rod, stick, coated electrode, manual Gas Metal Arc Welding (GMAW) Short arc, MIG (metal inert gas), shielded welding, hard wire Gas Tungsten Arc Welding (GTAW) Heli-arc, TIG (tungsten inert gas) Flux-core Arc Welding (FCAW) Semi-Automatic Environment/Atmospheric condition. In addition, it helps companies maintain compliance with safety standards, which most importantly protects employees but also protects the bottom line. The British Compressed Gases Association publish relevant guidance. These devices reduce the risk of electric shock from inadvertent contact with the electrode. Falling loose bricks. Welding and cutting inside ships and other enclosed spaces is particularly dangerous as smoke from fires cannot escape and will quickly overcome people working nearby. Pressure regulators for gas cylinders used in welding, cutting and . Asphyxiation hazards in welding and allied processes gives more guidance on this. Confined spaces: A brief guide to working safely, Asphyxiation hazards in welding and allied processes, Dangerous substances and explosive atmospheres, Maintaining portable and transportable electrical equipment, work with electrically powered equipment, Preventing slips and trips at work: A brief guide, consider if there is a way to do the job without going in. P>H!8XJWN4fAxehAgsq9k\d!K#tU)}*N>OeHV"gta3[*o}YpZ,5p+KR2xC=&r,* 7ElCYZ \=C~\KN\$P$Cg38L&9ce9F`Hugn92*V*j 1 0 obj CONTROL MEASURES. COSHH Essentials sheet WL3 gives more advice on fume control. There are standards covering impact resistance, auto-darkening welding filters and fixed filters. Mechanical general ventilation uses fans mounted in the ceiling or high up on a wall to extract the air in the room and draw in clean air to disperse airborne contaminants. Environment/Atmospheric condition. Eye protection is required to safeguard against splatter. Welders should wear clean, dry welding gloves and overalls. stream welding process, volume of work and level of fume generated, metal being welded (mild steel, stainless etc), consumable being used in the welding process, mechanical fasteners (bolts, rivets etc. welding machine. When welding larger articles, extracted booths large enough to house the workpiece with it mounted on a turntable to ensure the fume is drawn towards the extraction at the back of the booth can be suitable. Academia.edu uses cookies to personalize content, tailor ads and improve the user experience. If you carry a gas cylinder inside a vehicle, always close the main cylinder valve to prevent leaks. Do you get the welding? Workers operating automated or mechanised welding machines or other workers nearby are unlikely to need RPE if: It may not be possible to have an LEV system in robotic cells capable of capturing all the fume. iii. The HSE leaflet Preventing slips and trips at work: A brief guide and the slips and trips web pages give simple guidance on what to consider when you are doing your risk assessment. SafetyCulture: Easy Inspection Solution - Get Started for Free Arc welding risk assessment pdf An off the shelf comprehensive risk assessment for Arc welding health and safety. This assessment was conducted to identify the level of risk and to help prioritize any control measures. @ia#D[(? If concerned seek medical advice before operating - remain at least 2 metres from the power unit and 1 meter from the welding arc. So how far away the operators can work becomes one of the main factors in deciding whether mechanical general ventilation is needed. INTRODUCTION Hazard identification and risk assessment is systematic process to protect the health and minimize danger to life of workers, property and environment. Prevent exposure to direct and reflected ultraviolet (UV) light and infrared rays by wearing protective clothing and using welding screens. <>/ExtGState<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 841.92 595.32] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Keep stacks to 2 high only. Results of the study showed that (1) there is significant hazards in building construction projects in Nekemte City. Welding machine not to be left unsupervised. Controls are required to ensure compliance with the current legal requirement for risk assessment, engineering control measures and applying the Hierarchy of Control. HSE's offshore web pages give more guidance. For work not expected to exceed one hour, a FFP3 tight-fitting disposable mask or re-usable half-mask with a P3 filter may be adequate to protect against particulates if the wearer is clean shaven, but these particulate filters will not protect workers from welding gases contained in the fume. (3) Other causes of hazards including new technology and sharp corner on the site, lack of adequate and skilled personnel, lack of appropriate supervision and numerous. If possible, use dark-coloured wall coating to reduce reflections. iv. if you have to go in, use a safe system of work. Burns and eye injuries. HSG 139 The safe use of compressed gases in welding, flame cutting and allied processes BSI Group www.bsi-global.com BS EN ISO 2503:1998 Gas welding equipment. When welding outdoors, local exhaust ventilation (LEV) is unlikely to be effective and RPE will be needed instead. Hazard Identification and Risk Assessment in Welding shop and Telescopic Forklift Sundarapandian.D1*, Muthukumar.K2 1,2PG Student, Professor, Department of Mechanical Engineering, Bannari Amman Institute of Technology, Coimbatore, Tamil Nadu, India-----***-----Abstract: Hazard Identification and Risk Assessment is a procedure that procedure . Welding risk assessment sample. HSE guidance Hot work on drums and tanks gives a simple description of the safe way to do this work. If the inert gas has only partially replaced the air, you may feel very weak, tired and confused. Sometimes inert gases are used to deliberately replace the air to prevent weld oxidation or reduce the risk of fires. You may be working in an identified confined space, but you should also be aware if your workspace could become a confined space as you weld. The main risk from confined space working is the lack of oxygen. Flame-retardant, heavy canvas screens are very common, but many people prefer to be able to see if someone is welding inside. For most welding operations, it is better to clamp the current return cable close to where you are welding. By using our site, you agree to our collection of information through the use of cookies. Avoid soft uneven ground. There are specific methods for confined space working. Reputable welding equipment suppliers will be able to help you make the correct choice. SITE: DATE: MAIN HAZARDS. Postural fatigue viii. The risk assessment should be carried out by a competent person who has been trained in the use of the equipment. The risk for MIG/ MAG and TIG welding is much less, as the welding current is normally switched on and off using the trigger or foot switch. There are ongoing legislative amendments and continuing research in the area of welding fume exposure. [^SeCVTaYX[6!q@exHY22cKkNiwgnwMG.:.qZ RPE must be suitable for each wearer. 4 0 obj Safety data sheets provide useful information on chemicals, describing the hazards the chemical presents, and giving information on handling, storage and emergency measures in case of an accident. Hazards and Risk Assessment 3.1 The hazards 3.1.1 The hazards in manual electric arc welding operation can be broadly grouped into the following major categories: (a) fire and explosion hazards; You should consider eliminating welding where possible by using cold joining techniques with: If you cannot eliminate welding, consider: The most effective way to reduce welding fume is to capture it at source, protecting the welder and preventing fume spreading. This is done by directing a flame from burning gas (usually acetylene) to melt metal at a joint to be welded and is a common method for welding iron, steel, cast iron, and copper. RISK MATRIX Potential consequence of harm 1 -Minor Injury (e.g. There cannot be much progress in the national development without construction, particularly in developing countries where there is lack of infrastructure and other basic facilities. If there is no need to see the person welding or for screening in between welding bays, darker or opaque screens and curtains should be used. @~:Zv SrDisDp. <>/Metadata 277 0 R/ViewerPreferences 278 0 R>> hazard can result in serious injury and/or illness, over 3 day absence) 3 -Major Injury Working in these locations is dangerous. <> If you aren't rescued and breathing normal air within a few minutes, you are likely to pass out and eventually die. Under the Chemical Agents Regulations, the risk must be assessed on the basis of the risk presented by all such chemical agents in combination. When using 3-phase welding circuits or single-phase circuits derived from different phases of the mains supply, segregate the welding positions connected to different phases or transformers by partitions, or distance, whenever reasonably practicable. Intense electromagnetic interference generated from high voltage arc welding equipment has the potential to cause cardiac pacemakers to operate incorrectly. High When welding (fusing) various materials together. To be reviewed in 12 months Page 1 of 1 Risk Assessment Activity: Use of Arc Welding Equipment Hazards Harm Risk prior to Control Measures Persons at Risk Required Control Measures Records/Actions Risk - Control Measures Applied Electricity Burns To learn more, view ourPrivacy Policy. Fire & explosion. For example, ultraviolet radiation given off by welding reacts with oxygen and nitrogen in the air to form ozone and nitrogen oxides. so alternative LEV Systems such as on tool extraction must be considered. Extracted air discharged outside the work area should leave the building at a high enough level to ensure it will be dispersed.Environmental legislation may also apply. If you cannot achieve adequate control from LEV alone, or it is not reasonably practicable to provide LEV, you must provide your workers with suitable respiratory protective equipment (RPE). This document is: Recognized by Local Authorities Recognized by General Contractors Suitable for CDM Sites Approved by H&S Managers It increases your chance of winning tender and is written by trained health and safety professionals. In most welding workshops mechanical general ventilation will be required because natural ventilation from open doors and windows is not sufficient to disperse the fume generated from the work tasks, they can see fumes generated, but are working far enough away that they are not near any fume generated and there is no haze of fume lingering in the air. A powered air respirator or a supplied air respirator which combines respiratory, eye and face protection, with an APF of at least 20, is the best option for arc welders. This means that many screens are made of 'semi-transparent' plastic. Local exhaust ventilation (LEV) which suits the work activityfor example,moveable extraction arms (elephant trunks) are unlikely to be suitable for a continuous weld on a large workpieces etc. . Code of Safe Working Practices for Merchant Seamen. If you are in control of operations where there is a need to: you may need to provide an insulating mat or some other dry platform, so welders are not in direct contact with wet or conductive surfaces. This must include the welder and any other workers in the area. %PDF-1.7 The COSHH essentials sheet WL3 Welding Fume Control gives more guidance. Postural fatigue viii. This means all arc welders using hand-held equipment are at risk of electric shock and electrical burns. Healthy,safe andproductive livesand enterprises. The latest figures show that slips, trips and falls account for a large proportion of reported accidents. By not accepting cookies some elements of the site, such as video, will not work. HSE aims to reduce work-related death, injury and ill health. Besides, oxy-acetylene and electric arc welding, other modes used are submerged arc welding, gas shielded arc welding processes TIG and MIG, plasma arc cutting and gauging etc. :Vvh+ r| ' Stacks collapsing or sinking. iv. Hazards associated with working at height. Radiation hazards - which are usually visual hazards ii. Are welding and return leads insulated and thick enough to carry the current safely? It then takes a casual analysis to establish the extent of hazards in the project, the causes for the hazards and the effect of the on the building construction project. Task to be supervised by a competent supervisor. 3 3 2 3 2 3 16 Welding machine not to be used while standing in the water. GUIDANCE ON COMPLETION OF RISK ASSESSMENT 6 2. Firstly, the consequences and likelihood for each of the identified hazards were evaluated to obtain the risk level according to the table below. If so, you should consider a soldiering career. if present. The standard does not specify any particular colour, it just requires the curtain to attain certain levels of performance. The current return path should be as short as possible. You can download the paper by clicking the button above. 3 0 obj Welding risk assessment doc. This video shows an extracted bench. You are likely to find you cannot complete simple tasks, including finding the way out. In general welding is carried out almost in all factories and workshops and the sites can be broadly divided into four categories. A reputable supplier should be able to confirm if a curtain conforms to the British Standard. v. Electric shock. Often a wooden pallet or rubber floor mat will be enough. Welding risk assessment iosh. If you don't follow the safe system of work and enter an area where there is a large amount of inert gas, you are risking death from asphyxiation. Danger to children. The welding risk assessment must take account of the type of welding, the material being welded, the welding gas used and the electrode or welding rod, in addition to the location, other welding activities, ventilation and the work practices of the welder. The electrical resistance of damp or contaminated clothing may be significantly reduced, giving rise to a greater risk of electric shock. Obstruction to vehicles. Controlling airborne contaminants at work. Hm2ay`;L1`\\&\?`ur@iYU#O1J"]K+VLSMhZm0 2pv(f-@s:]RMzfq(VLv,rC~0>Ajae0.X4lYL`ltK[xsP*gi^0w k\STm>>mF.Af9FUxK Qr4bTp,Nxd1yyJ9loa>Y|(*FBtfdwa,4n\zB#>C*TLl-|L6m4UP4q4Id0^D!lRhKlAARV F4(%&=^cC9"`7R60J#sUZdAel0yEp 7HR?VvA!y "-+`<29?R>o^puOcv:| '(SNUseKZu.A\heZTL*[Y9RrkPT' Uui7Emm9Qh/hnL)X# ]A;"egJ^B|w9aoN;9|ANH2%%'(0>89e`v ; 'g}=zN6ukq*{RSf0ulK?ey,lS;hXa-P7d?+u;}R#p(SXq.-L9Xq.Ly-9D.-;V&Tp{q/etMkIp8ZN-J[h(Q9h-J8x2DN ' This assessment provides a baseline for implementing solutions for identified risks and establishing appropriate welding safety training. Heat, sparks and drips of metal and slag can travel a considerable distance and start fires in adjacent rooms. Generally, Chapter 1 deals with Introduction part of the study, Chapter 2 deals with the literature review of the study, Chapter 3 deals with the Methodology used to perform the study, Chapter 4 deals with the Analysis of the data gathered, and Chapter 5 deals with the Conclusion and Recommendation, Suggestion for Future Research. EXECUTIVE SUMMARY: A safety risk assessment was conducted in the afore stated site (welding and construction site), several hazards were observed at the site, these hazards ranges from fire hazards (absence of fire extinguishers, fire alarm systems makes this case life threatening considering the facts that possible gas leaks were likely at . Radiation hazards which are usually visual hazards ii. x]Ys7~WC=f:1I>']?"d&lJU*q~]D" dWC:7?y]_ow~wv _}o/_di#,$K&%+&~^xIW/_2KHBIW i;:~oMF}N~z\6'Oub'i~$Y3y/d'B,F$I"e:"l:-3Uq ]!'[x/Yl+Wr1(fR|*{. There is more guidance on maintaining electrical equipment on HSE's maintaining electrical equipment safety web page and in the HSE publication Maintaining portable and transportable electrical equipment. indoors, other welding activities in workplace. Welding curtains and screens should conform to the British Standard BS EN ISO 25980 or at least offer the same level of protection as this standard.
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