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Noise Reduction through Machinery Maintenance

February 24, 2015 0 Comments

Noise Reduction on Civil Construction SitesDid you know an effective noise reduction strategy for your Civil Construction Project is regular machinery maintenance?

How machines contribute to noise pollution over time:

Problems with Silencers

  • Damaged Silencers: Silencers, like any machinery on a civil construction project can become damaged, affecting their ability to absorb noise. The construction environment can be the cause of that damage – the Silencer becomes clogged with dust, and in some cases, being out in the elements the Silencers are rusted out.
  • Missing Silencers: Sounds like a no-brainer, but you would be surprised at the number of times Silencers have been removed from machinery during repairs or maintenance and then been forgotten and not replaced. There are occasions when the actual Silencer itself was causing the noise (it was loose or damaged) and workers removed it. Unfortunately, even though the rattle of the loose or damaged cover, silencer or guard is removed – the machinery sound is increased! There is also an added safety issue in the removal of the Silencer, as in a number of cases it also acts as a guard over moving parts.

    It should be an SOP that the Silencer (vibration isolator, muffler, cover, guard) should not be removed except during maintenance (or for replacement – and the machinery not used until that is completed). And a damaged Silencer should be replaced as soon as possible.

Worn Components

  • Gear Teeth: When gear teeth wear down they fail to mesh properly. You can spot wear marks on the teeth as shiny marks.
  • Bearings: As bearings wear down they cause vibration in that part and within a short time throughout the entire machine. Vibration of course generates noise. It’s possible to hear and see the vibration occurring. If you look at the bearings you will see the wearing as flat spots or cracks.

    Obviously replacing worn components is the next step to this noise reduction strategy.

Blunt Cutting Tools

  • Blunt Saws, Drills, and Blades all contribute to noisy work. Sharpening cutting faces will not only speed up work, it will help to reduce sound. Schedule regular maintenance on cutting tools.

Lack of Lubrication

  • Unlubricated Gears and Parts: Naturally, moving parts that lack the right amount of lubrication will screech, squeak and grind. Follow the lubrication guidelines on the machinery and its parts. If you are unsure, then contact your distributor or contractor for maintenance information.

Vibration

  • Imbalance of parts
  • Loose parts

    Regularly check machinery, and if there is excessive vibration or rattling noises, then it’s time for a maintenance check. Vibration can further loosen components, so strict attention should be made to securing machinery parts.

The upside to maintenance of machinery is making your site safer and increasing the efficiency of, and life span of your machinery. This all translates to money savings and noise reduction – contributing to a successful Civil Construction Project.

Filed in: On Site

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