DL/T 5203-2005 (English Version) PDF

Scope: This standard specifies the basic requirements for explosion-proof design for coal transportation, storage, pulverized coal preparation and related smoke, air duct and other dust deflagration in coal-fired thermal power plants. This standard applies to the deflagration of pulverized coal clouds in the coal and pulverizing systems of coal-fired thermal power plants and their surrounding bodies (such as raw coal bunkers, pulverized coal bunkers, coarse and fine powder separators, and silos, etc.). The coal-related parts of thermal power plants where coal is co-fired with fuel oil or coal is co-fired with combustible gas should comply with this standard. This standard does not apply to enclosed bodies that generate excessive internal pressure due to external flames or exposure to other fire sources, such as the explosion protection requirements for boiler combustion chambers and boiler combustion systems, nor does it apply to detonation and unrestricted deflagration. (such as outdoor explosion or steam cloud explosion).

DL/T 5203-2005 Referenced Document

DL 5000 Technical code for designing fossil fuel power plants(explanation)
DL/T 435-2004 Code for the prevention of pulverized coal firing furnace explosions/implosions in power plant boilers
DL/T 466-2004 Guide for type selection for pulverizers and pulverizing systems of power station
GB 50058 Code for design of electrical installations in explosive atmospheres*， 2014-01-29 Update
GB/T 16426 Determination for maximum explosion pressure and maximum rate of pressure rise of dust cloud

2022 DL/T 5203-2022 Technical regulations for explosion-proof design of coal and pulverizing systems in thermal power plants
2005 DL/T 5203-2005 Technical code for explosion prevention design of coal and pulverized coal preparation system of fossil fuel power plant