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GB 8702-2014 PDF in English


GB 8702-2014 (GB8702-2014) PDF English
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GB 8702-2014: PDF in English

GB 8702-2014
GB
NATIONAL STANDARD OF
THE PEOPLE’S REPUBLIC OF CHINA
ICS
Replacing GB 8702-88, GB 9175-88
Controlling limits for electromagnetic environment
ISSUED ON. SEPTEMBER 23, 2014
IMPLEMENTED ON. JANUARY 1, 2015
Issued by. Ministry of Environmental Protection;
General Administration of Quality Supervision, Inspection
and Quarantine.
Table of Contents
Foreword ... 3 
1 Scope ... 5 
2 Normative references ... 5 
3 Terms and definitions ... 5 
4 Limits and evaluation methods ... 7 
5 Exemption range ... 9 
6 Monitoring ... 9 
Foreword
This Standard was formulated so as to implement the "People's Republic of
China Environmental Protection Law", strengthen the electromagnetic
environment management and protect public health.
This Standard is an integrated revision to GB 8702-88 Electromagnetic
radiation protection regulations and GB 9175-88 Environmental health
standards for electromagnetic waves. This Standard referred to the
International Commission on Non-Ionizing Radiation Protection (ICNIRP)
"Guidelines for Exposure to Time-varying Electric Fields, Magnetic Fields and
Electromagnetic Fields (300 GHz and below), 1998”, and “IEEE standard of
0~3 kHz electromagnetic field safety level" of the Institute of Electrical and
Electronics Engineers (IEEE). It also considered the practice of
electromagnetic environment protection in China. As long as the limits of this
Standard are met, it encourages the electric field, magnetic field,
electromagnetic field facilities (equipment) owners to follow the precautionary
principle, actively take effective measures and reduce public exposure.
This Standard specifies the field limits, evaluation methods and relevant
facilities (equipment) exemptions of electric field, magnetic field,
electromagnetic field (1Hz ~ 300GHz) of controlling public exposure in the
electromagnetic environment.
This Standard was first issued in 1988. This is the first revision.
The main content of this revision are as follows.
- added the public exposure controlling limits for the electric field and
magnetic field in the 1 Hz to 100 kHz band;
- deleted the occupational exposure limits;
- deleted the administrative content requirements;
- adjusted the monitoring requirements;
- supplemented the scope of the exchange of power transmission
facilities.
Since the implementation of this Standard, GB 8702-88 Electromagnetic
radiation protection regulations and GB 9175-88 Environmental health
standards for electromagnetic waves are repealed simultaneously.
This Standard were proposed by Environmental Protection Department of
Science and Technology Standards Division, Department of Radiation Safety
Supervision Division.
Controlling limits for electromagnetic environment
1 Scope
This Standard specifies the field limits, evaluation methods and relevant
facilities (equipment) exemptions of electric field, magnetic field,
electromagnetic field (1Hz ~ 300GHz) of controlling public exposure in the
electromagnetic environment.
This Standard is applicable to the evaluation and management of controlling
public exposure in the electromagnetic environment.
This Standard is NOT applicable to the evaluation and management of
controlling patients or escort personnel exposure to treatment or diagnosis; is
NOT applicable to the evaluation and management of controlling exposures
of wireless communication terminal, household appliances to users. It cannot
be used as product quality requirements for facilities (equipment) that
generate electric field, magnetic field, electromagnetic field.
2 Normative references
This Standard refers to the following documents or the terms thereof. For
undated references, the latest edition of the referenced document applies.
HJ 681, Electromagnetic environmental monitoring method for AC electric
power transmission and distribution project (on trial)
HJ/T 10.2, Guideline on management of radioactive environmental
Protection electromagnetic radiation monitoring Instruments and Methods
Environmental Monitoring Management Measures (State Environmental
Protection Administration Decree No. 39)
3 Terms and definitions
The following terms and definitions apply to this Standard.
3.1 electromagnetic environment
the sum of all electromagnetic phenomena present at a given place
3.2 public exposure
all public electric field, magnetic field, electromagnetic field exposure,
excluding occupational exposure and medical exposure
3.3 electric field
the composition of the electromagnetic field characterized by the electric field
strength and the electrical density
3.4 magnetic field
the composition of the electromagnetic field characterized by the magnetic
field strength and magnetic induction
3.5 electromagnetic field
the field of electrical and magnetic states determined by four related vectors
of electric field strength, electric flux density, magnetic field strength,
magnetic induction strength, and characterized by the current density and
body charge density
3.6 electric field strength
the force of the vector field E, whose force acting on the stationary charged
particles is equal to the product of E and the charge of the particles, in volts
per meter (V/m)
3.7 magnetic field strength
the vector field H, at a given point, which is equal to the magnetic induction
intensity divided by the permeability and minus the magnetization, in amperes
per meter (A/m)
3.8 magnetic induction strength
the force of the vector field B, which acts on the charged particles with a
certain velocity, is equal to the product of velocity and B vector product, and
then the charge of the particle, in Tesla (T); in the air, the magnetic induction
intensity is equal to the magnetic field strength multiplied by the permeability
μ0, that is, B = μ0H
3.9 power density
the scalar field quantity S, is the value of the area divided by the area of the
face that is perpendicular to the energy propagation direction of the
electromagnetic wave in watts per square meter (W/m2)
3.10 equivalent radiation power
at less than 1000 MHz, the equivalent radiated power is equal to the product
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.