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Damage from noise exposure of sufficient intensity and duration is well established and hearing loss may be temporary or permanent. Fortunately, noise exposure can be controlled and technology exists to reduce the hazards. Aside from employer/employee concern with the inherent hazards of noise, added attention has been brought to focus on the subject through regulatory requirements. Under the Occupational Safety and Health Act (OSHA) every employer is legally responsible for providing a workplace free of hazards such as excessive noise. It has been estimated that 14 million US workers are exposed to hazardous noise.
This book is presented as an overview summary for employers, workers, and supervisors interested in workplace noise and its control. We believe that in order to understand and control noise it is not necessary to be highly technical. Noise problems can quite often be solved by the people who are directly affected. Presented is an overview of noise, the regulations concerning its control, an explanation of specific principles, and a discussion of some particular techniques.
Employers, workers, and supervisors interested in workplace noise and its control.
- Introduction to Sound and Noise
Effects of Noise
Human Exposure and Response
Physics of Sound
Relationship of Sound Pressure, Sound Power and Sound Intensity
Frequency of Sound
Duration of Sound
2. Industrial Noise Control-An Overview
Low-Cost Solutions for Noise Control
Sound Control Principles
3. Noise Control Regulations
The Noise Control Act as Amended by the Quiet Communities Act
State Environmental Noise Programs
Occupational Safety and Health Act
1974 OSHA Proposal to Amend Noise Standard
Hearing Conservation Program Rules
State Workman's Compensation Laws
Note Added in Proof: OSHA Regulatory Changes
4. Noise Analysis
Microphones and the Acoustical Environment
Sound Level Meters
Integrating Sound Level Meters
Amplitude Distribution Analyzers
Related Vibration Measurements
5. Vibration Analysis and Instrumentation
Vibration Signature Analysis
Data at Startup
Vibration Severity Measured in Velocity
Strobe Light Analysis
The ""Big Four"" Sources of Vibration
6. Measurement Techniques for Sound Level Meters
Noise Level and Frequency
The Sound Level Meter
Defining the Measurement Problem
Determination of Percent-Exceeded Noise Levels
Determination of Equivalent Sound Level
Characteristics of Sound
The Human Ear: Physiology
Assessment of Hearing Impairment
Automatic Recording Audiometers
8. Analysis of Valve and Piping Noise
Cavitation in Liquid Systems
Control Valve Noise Prediction: Compressible Fluids
Double Reducing Station
Valve/Piping Design Considerations
9. Fan Noise Control
Types of Fans
Relocation of Equipment
Summary and Conclusions
- No. of pages:
- © William Andrew 1996
- 31st December 1996
- William Andrew
- eBook ISBN:
- Hardcover ISBN:
United States Agency for International Development
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