Noise Detection

1. Introduction to Noise Detection

Noise refers to sounds that disturb the surrounding living environment.

Noise monitoring is the process of detecting noise and its sources that interfere with people's normal life, work, and study, and determining whether it exceeds the emission limits specified by national standards.

2. Detection Scope

(1) Environmental noise monitoring, including social life noise, industrial enterprise boundary noise, construction site boundary noise, road traffic noise, railway boundary noise, urban rail transit station platform noise, secondary radiation noise, etc.

(2) Routine monitoring of urban acoustic environment

3. Detection Items

Social life noise: Noise generated by equipment and facilities used in commercial cultural and entertainment venues and business activities;

Road traffic noise: Noise produced by motor vehicles operating on roads with certain technical conditions and facilities;

Railway boundary noise: Noise generated by the operation of locomotives and rolling stock, measured 30 meters from the centerline of the outer railway track;

Secondary radiation noise: Indoor secondary radiation noise caused by vibrations in buildings along urban rail transit lines due to train operations;

Industrial enterprise boundary noise: Noise generated by fixed equipment and facilities used in industrial production activities, measured and controlled at the enterprise boundary;

Construction site boundary noise: Noise generated during the building construction process, measured and controlled at the construction site boundary;

Urban rail transit station platform noise: Noise on the platform when subway and light rail trains enter and depart from the station;

Routine monitoring of urban acoustic environment: Includes regional acoustic environment monitoring, road traffic acoustic environment monitoring, and functional zone acoustic environment monitoring.

4. Relevant Standards

"Environmental Quality Standard for Noise" GB 3096-2008

"Technical Specification for Delimiting Acoustic Environment Functional Zones" GB/T 15190-2014

"Emission Standard for Community Noise" GB 22337-2008

"Emission Standard for Industrial Enterprises Noise at Boundary" GB 12348-2008

"Emission Standard for Construction Site Boundary Noise" GB 12523-2011

"Railway Boundary Noise Limits and Measurement Methods" GB 12525-1990

"Technical Specification for Environmental Noise Monitoring - Routine Monitoring of Urban Acoustic Environment" HJ 640-2012

"Acoustic Requirements and Measurement Methods for Urban Rail Transit Station Platforms" GB 14227-1993

"Standard for Limits and Measurement Methods of Building Vibration and Secondary Radiation Noise Induced by Urban Rail Transit" JGJ/T 170-2009