Sound and Noise Pollution

These flashcards cover key concepts of sound and noise pollution, their effects, and related legislation, aiding in exam preparation.

What are the basic principles evaluated in noise pollution legislation?

Basic principles include the evaluation of theories, legislation, and the analysis of problems related to noise pollution.

What distinguishes sound from noise?

Sound is often pleasurable and detected by pressure variations, while noise is any sound that causes psychological disturbance.

What is the threshold of hearing in humans?

The human ear can hear sounds within the frequency range of 20 Hz to 20,000 Hz.

What are the physiological effects of noise?

Physiological effects of noise are subjective and may include irritability, fatigue, and increased stress.

What is the significance of decibels (dB) in measuring sound?

Decibels measure the intensity or power level of a sound and are based on a logarithmic scale.

What are common sources of noise pollution?

Common sources include traffic noise, industrial activities, construction activities, and social events.

What is the primary focus of the Occupational Safety and Health (Noise Exposure) Regulations 2019?

The regulations focus on identifying excessive noise hazards and protecting employees in the workplace.

What is the formula for calculating daily noise dose?

D = C1/T1 + C2/T2 + … + Cn/Tn, where C represents the actual duration of exposure at different noise levels.

What should an employer do if workers are exposed to excessive noise?

Employers must conduct a noise risk assessment and implement necessary controls to protect workers.

What are personal hearing protectors (PHP), and when should they be used?

PHP are devices like earplugs or earmuffs worn by employees when noise exposure exceeds specified limits.