DL/T 5252-2010 英文版 火力发电厂环境影响评价气象测试技术规定

ICS 27.100
F 20
Record No. J1045—2010
Electric Power Industry Standard of the People's Republic of China
P DL / T 5252 — 2010
Meteorological Testing
Specification for Environment
Impact Assessment of Thermal
Power Plants
Design of Fossil Fuel Power Plant
Issue Date: May 24, 2010 implementation Date: October 1, 2010
Issued by the National Energy Administration

1 Scope
This specification defines the fundamental requirements on meteorological testing activities in environmental impact assessment for construction projects of thermal power plants.
This specification is applicable to the meteorological testing activities in environmental impact assessment for construction projects of thermal power plants. It may also be taken as a reference for waste fired power stations and biomass power generation projects.

2 Normative Reference
The following normative documents contain provisions which, through reference in this text, constitute the provisions of this specification. For dated references, subsequent amendments (excluding the contents of errata) to or revision of any of these publications do not apply.
However, parties to agreements based on this specification are encouraged to investigate the possibility of applying the latest editions of the normative documents indicated below. For undated references, the latest editions thereof applies.
GB/T 3840 Technical Methods for Making Local Emission
Standards of Air Pollutants
GB 13223 Emission Standard of Air Pollutants for Thermal
Power Plants
HJ 2.2 Guidelines for Environmental Impact AssessmentAtmospheric Environment

3 Terms and Definitions
The following terms and definitions apply to this specification.
3.0.1
Assessment area
Abbreviated from environmental impact assessment area.
Different pollution sources result in different impact areas for different environmental elements. The assessment area described herein refers to the atmospheric environmental impact assessment area.
3.0.2
Cavitation at leeward slope
When an air flow passes obstacles, such as mountains, buildings,the counterflow area formed within a certain distance range of such obstacles at the leeward side.
3.0.3
Mountain valley breeze
It results from thermodynamic difference between a mountain valley and the surrounding air. In the daytime, wind blows from the valley to slope of a mountain (referred to as valley breeze); and at night, wind blows from the slope to valley of a mountain (referred to as mountain breeze). Valley breeze and mountain breeze are collectively called as the mountain valley breeze.
3.0.4
Sea breeze and land breeze
A wind characterized by diurnal variation which is formed near coasts due to uneven temperature between the land and the sea.
Where the basic air flow is weak, wind blows from the sea to the land in the daytime (referred to as sea breeze), and blows from the land to the sea at night (referred to as land breeze), and the both of them are collectively called as sea breeze and land breeze.
3.0.5
Atmospheric boundary layer
The lowest layer of aerosphere, also known as the"planetary boundary layer". In this layer, strong exchanges of various properties between the atmosphere and the ground occur due to thermal and dynamic effects from the ground, and as a result, the atmospheric motions present substantially irregular turbulent state.
3.0.6
Internal boundary layer
A new boundary layer occurring in the original boundary layer when air flow transits from one underlying surface to another underlying surface with different thermal and dynamic properties,also known as secondary boundary layer.
3.0.7
Urban heat island circulation
A kind of local wind caused by the temperature difference between urban area and the surrounding suburban or rural areas.
3.0.8
Temperature inversion
The phenomena that the atmospheric temperature rises with the increase in height above the ground.

投稿会员：芳华