The aspect of industrial noise is one that is almost unavoidable especially in the case where there is use of heavy machinery. The issue may however become very serious because there is the potential for hearing damage in employees. As a result, it is essential that industries come up with measures to reduce such pollution. The measures that they come up with ought to be implemented on a constant basis. There exist various strategies of industrial noise control in Florida.
Damping is one of the used methods. It is made use of in chutes, panels, hoppers, conveyors and machine guards among others. There are two techniques used with this method. The first is unconstrained layer damping that involves use of bitumastic material. This material is stuck to the surface in question. The other technique entails construction of a laminate. Constrained layer damping is more effective and rugged.
With constrained layer damping, there is re-manufacture of steel guards or purchase of self adhesive sheets of steel. It is possible to stick the latter on to existing components in order to cover 80 percent or more of the flat surface. This helps to achieve between 5-25 dB reduction in noise. This technique however has limitation in that efficiency reduces adversely for sheets that are thicker. It is not used in sheets that are 3mm thick or more.
Using fan installations is another effective option. The maximum efficiency of fans used precisely coincides with minimum noise levels. Therefore, fan installation features which minimize efficiency are certain to increase noise levels. Bends close to fans and dampers are the most experienced examples. To maximize efficiency, 2-3 duct diameters should be used.
When ductwork is used, there will be 10-20 dB reduction in noises that are transmitted in the air. Rather than making use of silencers, one can line the last bend in the ductwork through the use of acoustic absorbents. The absorbents may either be fiberglass or foam. Alternatively, there can be construction of simple right-angled bends constructed from absorbents and which can fit on the openings. Any duct vibrations are handled through the use of dampers.
Fan speed reductions are applied in axial or centrifugal flow fans. Fan noises are approximately proportional to the 5th power of the speed of the fan. As a result, it is possible in many cases to achieve massive reductions in noise from small drops in fan speed. This is possible by changing pulley sizes or control systems and also re-setting dampers.
Also very common and effective is the use of electric motors that are known to reduce noises massively. Most industries make use of electric motors that are employed in many devices. Most such companies are however in the dark as concerns availability of general duty motors. These are up to 10 dB quieter than the typical available units. Preferably, the motors should be fed into the system on a gradual basis such that all subsequent replacements are quiet.
In case employees have to work in places with high levels of sonic pollution, then they would have to sue earplugs and various other protective gears. It protects them from developing complications. It is also advisable that they go for medical examinations of the ears regularly.
Damping is one of the used methods. It is made use of in chutes, panels, hoppers, conveyors and machine guards among others. There are two techniques used with this method. The first is unconstrained layer damping that involves use of bitumastic material. This material is stuck to the surface in question. The other technique entails construction of a laminate. Constrained layer damping is more effective and rugged.
With constrained layer damping, there is re-manufacture of steel guards or purchase of self adhesive sheets of steel. It is possible to stick the latter on to existing components in order to cover 80 percent or more of the flat surface. This helps to achieve between 5-25 dB reduction in noise. This technique however has limitation in that efficiency reduces adversely for sheets that are thicker. It is not used in sheets that are 3mm thick or more.
Using fan installations is another effective option. The maximum efficiency of fans used precisely coincides with minimum noise levels. Therefore, fan installation features which minimize efficiency are certain to increase noise levels. Bends close to fans and dampers are the most experienced examples. To maximize efficiency, 2-3 duct diameters should be used.
When ductwork is used, there will be 10-20 dB reduction in noises that are transmitted in the air. Rather than making use of silencers, one can line the last bend in the ductwork through the use of acoustic absorbents. The absorbents may either be fiberglass or foam. Alternatively, there can be construction of simple right-angled bends constructed from absorbents and which can fit on the openings. Any duct vibrations are handled through the use of dampers.
Fan speed reductions are applied in axial or centrifugal flow fans. Fan noises are approximately proportional to the 5th power of the speed of the fan. As a result, it is possible in many cases to achieve massive reductions in noise from small drops in fan speed. This is possible by changing pulley sizes or control systems and also re-setting dampers.
Also very common and effective is the use of electric motors that are known to reduce noises massively. Most industries make use of electric motors that are employed in many devices. Most such companies are however in the dark as concerns availability of general duty motors. These are up to 10 dB quieter than the typical available units. Preferably, the motors should be fed into the system on a gradual basis such that all subsequent replacements are quiet.
In case employees have to work in places with high levels of sonic pollution, then they would have to sue earplugs and various other protective gears. It protects them from developing complications. It is also advisable that they go for medical examinations of the ears regularly.
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