Causes and preventive measures for explosion accidents of pressure vessels
Causes and preventive measures for explosion accidents of pressure vessels
Causes of the accident: overpressure, over temperature, partial damage to the container, failure of the safety device, etc.
harm:
a, shock wave and its destructive effect: shock wave overpressure will cause casualties and damage to buildings.
b. Destructive effect of blasting debris: causing serious injury or death, damage to nearby equipment and pipelines, and causing secondary accidents.
c, medium damage: medium damage is mainly poisonous to toxic media and high temperature water vapor burns.
d. Second explosion and combustion: When the medium contained in the container is a flammable liquefied gas, the container ruptures and explodes to form a large amount of flammable vapor at the site, and is quickly mixed with air to form a flammable mixture, which is formed in the presence of an open flame during diffusion. The second explosion often caused the vicinity of the scene to become a sea of fire, causing major harm.
prevention:
(1) In the design, a reasonable structure should be adopted.
(2) During manufacturing, repair, installation and transformation, strengthen welding management, improve welding quality and heat treatment and flaw detection according to specifications; strengthen material management, avoid using defective materials or use wrong steel and welding materials.
(3) Strengthen the use management to avoid operational errors, over temperature, overpressure, overload operation, misdetection, disrepair, failure of safety devices, etc.
(4) Strengthen inspection work, find defects in time and take effective measures.
