¶ … Local exhaust ventilation for the control of welding fumes in the construction industry -- a literature review" and this was published in the Annals of Occupational Hygiene. This paper notes that welding presents a challenge for industrial hygienists with respect to controlling exposure to fumes. The reason is that arc welders typically move from site to site, and these frequent changes in site make it difficult to set up ventilation systems or utilize other similar controls. Thus, the welders are exposed to fumes, because the nature of their work creates such fumes, in these environments where it is impractical to install ventilation systems. Some of the worst industries for this type of exposure are the construction and shipbuilding industries.
The authors looked at the literature on this subject. In particular, they were interested in finding out if LEVs have proven to be a solution. Portable LEV systems are the most logical solution to this problem. The problem...
LEV is the primary engineering control.
The authors found that there are main types of studies -- investigational studies and field studies. The former involved controlled settings, but the latter reflected real world settings. They found four types of results. One is that portable systems are sometimes very simple, without filtration, and others contain HEPA filters. They also found that there were circumstances in which the position of the welder's body in relation to the plume made a difference in terms of their exposure; thus there are times when this can be a solution, but there are times when the welder needs to be in a more dangerous position. Alternately, where there is an LEV hood, the positioning on that hood is another way that the worker can control his/her level of exposure. This is important, because the paper highlights the different ways that the worker can ensure the highest level of protection to their own actions.
The authors concluded by noting that there is more to be done, in particular with hoods, in the field. Field studies highlight the challenges of real world conditions. Lab work is an important starting point, in particular to isolate variables, but the field work is where most of the learning will be done because…
American Welding Society Compare and contrast the confined space recommendations made by the American Welding Society with those found in Chapter 13 of the textbook. Chapter thirteen explains confined spaces, as open - topped areas of more than 4 feet in depth. The American Welding Society (AWS) defines this as small rooms, pits, vats, sewers and many other enclosed compartments. The differences between them, is chapter thirteen defines these areas specifically, based
physical agents that exposes health and safety hazards to workers within the work places. Some of the physical agents are noise, vibrations, explosive atmospheres, electromagnetic fields, ionizing radiations as well as optical radiation. It should be noted that there are huge risks that are associated with these physical agents and unless measures are taken to contain the situation, serious health and safety risks may occur. There are also a