Industrial noise

As a commercial noise all noise emissions are referred to, which are generated by commercial systems. A distinction is the noise that affects those working in or on the plant people, and the noise of the surrounding area or neighborhood.

To protect the people who work in or on the plant, in Germany there are workplace regulations.

The rules and regulations for the protection of environment and the neighborhood is in Germany, the Sixth General Administrative Provision on the Federal Pollution Control - TA noise - Technical Instructions on Noise Abatement, 26 August 1998 ( GMBl. 1998 p 503). It will specify which emissions in the different immission ( residential, mixed use, commercial area ... ) must not be exceeded. Responsible for the authorization and supervision in Germany are usually the district offices.

The implementation is up in Germany the labor inspectorates or the offices of Labour Protection - depending on the province.

Protection from industrial noise

Noise induced hearing loss is in the industrial sector for years, the "number one" among the occupational diseases. Particularly disastrous it is the fact that this disease is no longer to heal. Who has damaged his hearing once, thus remains handicapped for the rest of his life. For noise levels above 90 dB ( A) (2 to 4 hours) can damage hearing occur even at short exposure times daily. Reference for the assessment of noise is the so-called evaluation level according to accident prevention regulations. This rating level is site specific or determined person-related and is an eight-hour constant noise equated. In assessing levels below 85 dB (A ) in the workplace noise-induced hearing damage is not expected.

Levels above 85 dB ( A) but depending on activity incidental influence as increase in blood pressure, aggression, loss of concentration and thus to a significant reduction in performance ( extra-aural noise effects ).

Therefore already on economic grounds to recommend compliance with the noise levels comply with workplace regulations as the highest noise levels.

The primary noise

Measures that reduce noise when making your creation, it is called primary or active noise control.

Secondary noise

Especially when machining workpieces, in high-speed systems, when punching or forming sheet metal primary measures at all or only with very great effort should be recognized. Often That can be remedied only secondary noise protection measures, such as cabins, capsules or partitions.

Noise cabins on the cutting edge of technology have multifunctional character. Through individual interpretation of a cabin can be the noise level of the facilities (eg near boring and milling machines, lathes, blasting equipment ) reduce well below the required by the professional association and the labor inspectorate value. In addition, a calm and stress-free environment is created for all employees, which leads to an enormous increase in performance. In secondary noise protection measures generally differentiates between machine housings and staff cabins. The classic solution for machine housings is the quadrilateral enclosing the system with roof. Also, the inclusion of hall walls or ceiling as soundproofing is quite possible. For changing tools by crane or forklift power-operated sliding doors and lift gates angle be provided. The supply and removal of the workpieces is carried out in a similar manner. Integrated, soundproofed windows, additional doors ensure good visibility and optimum accessibility of the system. Sound booths are also making an active contribution to occupational safety. On machines with large dimensions of the so-called soundproofed tunnel is preferred over the machine housings often. Here control panels and control stations are arranged so that all staff can work in a sound- proof, long stretched cabin. The correct arrangement of the visible surfaces, as well as good ventilation and air conditioning may be particularly important.

The construction of sound insulation elements is configured according to individual requirements.

In general, a sandwich is employed comprising:

Of particular note is the connection between the elements and the connections to the floor, ceiling and walls. Only absolutely soundproof connections ensure the success of soundproofing measure.

Economic benefits through sound insulation

A calculation of the profitability of soundproofing is easiest to identify themselves when subsequently closed machines. Performance increase of up to 5% are considered depending on the way the machine setting as absolutely realistic. Significant reductions in exclusion rates ( 10%) and about 8 % less absenteeism are good sources of cost reduction. Good sound insulation measures are always perfectly matched to the intended use and achieve not only the statutory requirements but often achieve yields up to 60 %. Properly inserted noise is called not only to the health of all employees to look out for but also can significantly improve the competitiveness of an enterprise.

• Noise