The method and instrument to be used is depending on the aim of the noise measurement. For personnel exposure, Dosimeter, Integrating Sound Level Meter or Sound Level Meter can be used. For Noise Survey or Noise Level Generated by Noise Source, ISLM or SLM can be used.Continue Reading

A noise assessment is an examination of the nature and characteristics of noise.Continue Reading

Noise is an unwanted sound, this is depending on the receiver’s perspective and circumstances. It can be an unpleasant background sound, loud, or disruptive sound.Continue Reading

Acoustic-Induced Vibration (AIV) is structural vibration excited by intense acoustic pressure in a piping system and pressure reducing devices, whilst Flow-Induced Vibration (FIV) is the result of turbulence in the process fluid which occurs due to major flow discontinuities.Continue Reading

Mitigations against FIV are as follows: Increase the diameter of the pipe or pipe size to reduce the fluid velocity Increase pipe wall thickness to increase system rigidity Provide a better support configuration by increasing the number of support Adding viscous damper, snubber, shock arrestor or other vibration reducers to the piping system as a...Continue Reading

Flow-Induced Vibration (FIV) is the result of turbulence in the process fluid, which occurs due to major flow discontinuities such as bends, tees, reducer, partially closed valves, branch connections and small-bore connections.Continue Reading

Turbulent Buffeting is the random turbulence that can excite tubes into vibration at their natural frequency by selectively extracting energy from a highly turbulent flow of gas across the bundle. This is a typical scenario in a heat exchanger.Continue Reading

Piping vibration can be mitigated by the following measures: Adding support to main piping to ensure mechanical natural frequency does not occur with pulsation frequency (which may cause vibration issues) Adding damping to main piping where the piping vibration is high. Reinforcing/enhancing the pipe stiffness can reduce vibration issues Adding supporting valves which add weight...Continue Reading

Acoustics is important in studying the effects of sound vibrations and how they interact with their surroundings. This includes the effects of acoustics on building and equipment by measuring how structure-borne sounds move through buildings which can induce the vibration of structures. The attempts to reduce noise are often related to issues of vibration.Continue Reading

Acoustic frequency is the speed of the sound’s vibration which determines the pitch of the sound. Sound is caused by vibrations that transmit through a medium such as air and reach the ear or some other form of detecting device.Continue Reading