lundi 27 janvier 2014

Best Drilling Noise Control Techniques

By Nelda Powers


Drilling noise control is crucial for many industries more so those that undertake work relating to construction and building projects. Other areas where these controls are useful are in the mineral exploration industries. Shielding the community and the workforce from excessive noises should be one of the core objectives of any ethical company undertaking projects. Some of the commonly employed techniques include the use of air silencers, sound abatement and noise absorbing wall panels.

Human hearing is known to be great such that noise-levels cannot be accurately represented on a scale that is linear. To counter this, a logarithmic unit is used commonly known as the decibel. Sound intensity and ones length of exposure determines the risk that a persons hearing may be damaged. Sound energy received is the core determinant of damage.

One of the common ways used to determine hazards at the work place is by conducting surveys. ISO standards have set an acceptable sound level which should act as a benchmark. A preliminary survey should therefore be able to identify work places where the sound level is materially above the benchmark set. In the drilling sector, a detailed survey should be able to identify the source or sources if many, quantify the sound level and come up with practicable solutions on ways of reducing levels.

Most controls are pegged on areas such as administration, hearing protection and engineering. One needs to clearly understand the principles that relate to noise-control. Breaking down the problem into smaller portions so as to effectively deal with each independently. These areas should include the source, transmission and reception.

Sound energy from two or more sources is usually higher by 3 dB. To cut down on the sound energy produced, it is advised that if possible, the sound sources should be separated. Sound energy that penetrates through a body or object can be reduced through sound insulation. Insulating is most effective if a wall or partition is used. Many music recording studios have adopted this technique which has adopted the reflection principle.

Some of the administrative polices that firms can adopt include undertaking the purchase of quiet machinery which produce minimal sound energy. Many manufacturers are now responding to these market needs. Job rotation procedures can help reduce the exposure time for an individual employee. Regular maintenance of the machines hence ensuring that they are efficiently operating. The use of hearing protection devices by employees in very noisy places.

At times it is difficult to reduce the noises right at the source. In such a case, one can use a simple enclosure that should be sealed off. This will help reduce the sound energy by between 15 to 20 dB. Mounting of heavy and large machines in close proximity to a building should be avoided. Rubber or springs which are elastic in nature can provide a stable foundation to mount the machines.

There are various drilling noise control techniques related to drifters. If down the hole hammer machines are used, they should have hydraulic drive motors. Double glass insulation in rooms can also help reduce the sound energy levels.




About the Author:





Aucun commentaire:

Enregistrer un commentaire