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GB 12523-2011 English PDF

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GB 12523-2011: Emission standard of environment noise for boundary of construction site
Status: Valid

GB 12523: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB 12523-2011English209 Add to Cart 3 days [Need to translate] Emission standard of environment noise for boundary of construction site Valid GB 12523-2011
GB 12523-1990English199 Add to Cart 2 days [Need to translate] Noise limits for construction site Obsolete GB 12523-1990

PDF similar to GB 12523-2011


Standard similar to GB 12523-2011

GB/T 14848   GB 3095   GB 12348   GB/T 15190   GB 3096   

Basic data

Standard ID GB 12523-2011 (GB12523-2011)
Description (Translated English) Emission standard of environment noise for boundary of construction site
Sector / Industry National Standard
Classification of Chinese Standard Z52
Classification of International Standard 13.140
Word Count Estimation 9,933
Date of Issue 2011-12-05
Date of Implementation 2012-07-01
Older Standard (superseded by this standard) GB 12523-1990; GB 12524-1990
Quoted Standard GB/T 15173; GB/T 3785.1
Regulation (derived from) Department of Environmental Protection Notice No. 86 of 2011 National Standards Bulletin 2011 No. 23
Issuing agency(ies) Ministry of Environmental Protection, General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Summary This Chinese standard specifies the construction site boundary environmental noise emission limits and measurement methods. This standard applies to noise-sensitive buildings surrounded by construction noise emissions management, evaluation and control. Municipal, telecommunications, transportation, water conservancy construction and other types of noise emission may refer to this standard. This standard does not apply to repairs, disaster during the construction noise emissions regulation.

GB 12523-2011: Emission standard of environment noise for boundary of construction site

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Emisson standard of environment noise for boundary of construction site ICS 13.140 Z 52 National Standards of People's Republic of China Replacing GB 12523-90, GB 12524-90 Construction emission of environmental noise within the boundary Emission standard of environment noise for boundary of construction site Standards are publishing process, the present text electronic publishing Draft content for reference, the official publication of the standard content text shall prevail. Issued on. 2011-12-05 2012-07-01 implementation Ministry of Environmental Protection State Administration of Quality Supervision, Inspection and Quarantine release

Table of Contents

Preface II 1. Scope ..1 2 Normative references ..1 3 Terms and Definitions .1 4 .2 environmental noise emission limits 5 measurement method .. 3 6 Measurement results of the evaluation 4 7 ..4 supervise the implementation of standards

Foreword

To implement the "People's Republic of China Environmental Protection Law" and "People's Republic of China Environmental Noise Pollution Prevention Law", control construction Building construction noise pollution and improve the sound quality of the environment, the development of this standard. This standard is the "Construction Site Noise Limits" (GB 12523-90) and "construction noise measurement field boundary" (GB 12524-90) the first amendment. Compared with the original standard main modifications are as follows. - The "Construction Site Noise Limits" (GB 12523-90) and the "Construction Site Noise measurement methods" (GB 12524-90) into a single standard, the name changed to "Construction Site environmental noise emission standards"; - Modify the scope, emission limits and measurement time; - Complements the measurement conditions, measuring point and measuring record; - An increase of some terms and definitions, background noise measurement, measurement and evaluation of the implementation of content standards; - Remove the meter register. This standard was first released in 1990, this is the first revision. From the date of implementation of this standard, "Noise Limits for Construction Site" (GB 12523-90) and "noise measurement Construction Site Volume method "(GB 12524-90) shall be repealed simultaneously. This standard is developed by the Ministry of Environmental Protection Science, Technology organization. This standard drafting units. China National Environmental Monitoring Center, Tianjin Environmental Monitoring Center, Beijing Labor Protection Science Research Institute, Standards Institute for Environmental. This standard MEP November 14, 2011 for approval. This standard from July 1, 2012 implementation. The standard explanation by the Ministry of Environmental Protection. Construction emission of environmental noise within the boundary

1 Scope

This standard specifies the construction site boundary environmental noise emission limits and measurement methods. This standard applies to construction noise management around the emission noise-sensitive structures, evaluation and control. Municipal, telecommunications, Transportation, water conservancy construction and other types of noise emission may be performed with reference to this standard. This standard does not apply to repair, resulting in noise emission regulation rescue the construction process.

2 Normative references

This standard refers to the contents of the following documents or where terms. For undated references, the effective version applies to this standard quasi. GB/T 15173 acoustic calibrator GB/T 17181 points average sound level meter

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 Construction construction Construction refers to the implementation phase of the construction of production activities, the construction process of all types of buildings, including infrastructure construction, the main Body structure construction, construction, decoration and construction roofing projects (residential buildings have been completed and delivered for use in interior decoration activities except) Wait. 3.2 Construction noise construction noise Interfere with the course of construction produced sound of the living environment. 3.3 A sound level A-weighted sound pressure level With A-weighted sound pressure level measured network, represented by the unit dB (A). AL 3.4 Equivalent continuous A sound level equivalent continuous A-weighted sound pressure level Referred to as the equivalent sound level, refer to energy within a predetermined time T A measure of the average sound level, denoted by (abbreviated), Unit dB (A). Unless otherwise specified, this standard noise values are all equivalent sound level. TAeqL, eqL By definition, the equivalent sound level is expressed as. ⎟⎠ ⎞⎜⎝ ⎛ = ∫ • T Leq dtTL A0 1.0101lg10 (1) Where. AL - t time the instantaneous sound level A; T - specified measurement period. 3.5 Construction Site boundary of construction site Construction site construction site boundary or border construction process approved by the competent authorities actually used. 3.6 Noise-sensitive buildings noise-sensitive buildings Refers to hospitals, schools, institutions, research institutes, such as the need to keep quiet residential building. 3.7 The maximum sound level maximum sound level Within the specified measurement time A maximum sound level measured by said unit dB (A). maxAL 3.8 Diurnal day-time, night, night-time According to "People's Republic of China Environmental Noise Pollution Prevention Law," "daytime" refers to the period between 6.00 and 22.00; "Night" It refers to the period between 22.00 and 6.00 the next day. Above the county level for the needs of environmental noise pollution prevention and control (such as considering the time difference, habits differences) while the daytime, Division of the night as otherwise provided, shall be the implementation of its provisions. 3.9 Background noise background noise Environmental noise is emitted from a sound source other than the sum of the measurement noise source. 3.10 Steady noise steady noise Within the measurement time, the measured sound level of the sound source of fluctuation is not greater than 3dB (A) of noise. 3.11 Non-stationary noise non-steady noise Within the measurement time, the measured sound level fluctuation source is greater than 3dB (A) of noise.

4 environmental noise emission limits

4.1 Construction process midfielder boundary environmental noise shall not exceed the emission limits specified in Table 1. Table 1 construction site boundary environmental noise emission limits Unit. dB (A) Day Night 4.2 Maximum noise at night sound level exceeding the limit amplitude shall not exceed 15 dB (A). 4.3 boundary spot from noise-sensitive buildings close, when it is outside the test conditions, in noise-sensitive buildings indoor measurements, Table 1 and the corresponding limit minus 10 dB (A) as a basis for evaluation.

5 measurement method

5.1 Measuring Instruments 5.1.1 measuring instruments for the integrated average sound level or noise automatic monitoring instrument, its performance should not be less than GB/T 17181 Type 2 instrument Claim. Calibration instruments should be consistent with GB/T 15173 the Tier 1 or Class 2 acoustic calibrator requirements. 5.1.2 measuring instruments and calibration of the instrument should be regularly certified by, and in the effective use of life; before each measurement, the test must be after The amount of live acoustic calibration, the front, showing the value of measuring instruments calibrated deviation of not greater than 0.5 dB (A), otherwise no measurement results effect. 5.1.3 When measuring microphone windscreen. 5.1.4 Measuring Instruments Time weighting characteristic is set to fast (F) gear. 5.2 Measurement of meteorological conditions Measurement should be no snow, no lightning weather, wind speed of 5 m/less when performed s. 5.3 measuring point 5.3.1 measuring point layout According to the layout of the construction site noise-sensitive structures around the location of the sound source location, the measuring point should be located in noise-sensitive buildings Movies Sound bigger, the close proximity of the location. 5.3.2 General provisions measuring point Generally measuring points are located on the outer Construction Site 1 m, height 1.2 m above location. 5.3.3 Other provisions measuring point 5.3.3.1 When the spot and surrounded by a walled community noise-sensitive buildings, measuring points should be located outside the present boundaries 1 m, 0.5 m or more above the walls Position, and is located in the impact of construction noise acoustic irradiation region. 5.3.3.2 community can not be measured on the spot to actual emissions when the sound source, such as. sound source is located at high altitude, field boundary sound barrier, noise-sensitive buildings Was higher than the field boundary walls, etc., the measuring point can be located in an outdoor setting noise-sensitive buildings at 1 m. 5.3.3.3 In noise sensitive buildings indoor measurements, measuring points are located in the central interior, away from any reflective surface indoors 0.5 m above from the ground 1.2 m height above the surface, the windows affected by noise in the direction of the open state measurement. 5.4 measurement period During construction, the equivalent sound level measured for 20 min, while measuring the maximum sound level at night. 5.5 Background noise measurement 5.5.1 Measurement environment. not measured the impact and other sound source is consistent with the measurement of the ambient sound source under test. 5.5.2 Measurement time. 1 min measurement of stationary noise equivalent sound level, non-stationary noise measurement of Leq 20 min. 5.6 Measuring records To be done to measure the noise measurement records. Record shall include. The measurement unit names, addresses, when meteorological conditions measurements, Measuring instruments, instrument calibration, measuring point, measurement time, instrument calibration value (pre-test, post-test), the main sound source schematic (field Boundary, the sound source, noise sensitive buildings from noise-sensitive buildings and field boundaries between the measuring point, etc.), noise measurements, the maximum Sound level (night-time), the value of the background noise, surveyors, proofreaders, auditors and other related information. 5.7 measurement result correction 5.7.1 Background noise value lower than the value when the noise measurement 10dB (A) above, noise measurement value not corrected. 5.7.2 noise measurement value and the difference value of the background noise in the 3 dB (A) ~ 10dB is between (A), measured values of noise and background noise value After rounding the difference, according to Table 2 to be amended. 5.7.3 noise measurement value of the background noise level by less than 3dB (A), should take measures to reduce background noise, as the case according to 5.7.1 Paragraph 5.7.2 or execution; still unable to meet the first two requirements, according to relevant provisions of environmental noise monitoring the implementation of the technical specifications. Table 2 Measurement results correction Unit. dB (A) The difference between the 34 ~ 56 ~ 10 Correction value -3 -2 -1

6 Measurement results of the evaluation

6.1 measurement results of each measuring point should be evaluated separately. 6.2 The maximum sound level direct evaluation. maxAL Monitor the implementation of standards 7 This standard by the people's governments above the county level environmental protection administrative department responsible for overseeing implementation.

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