Analysis of the main reasons of pressure vessel accident
I have seen some magazine articles, statistics, Use reason more, the quality of the container itself Magazine is "China special equipment safety"
The pressure vessel explosion accident causes and prevention measures The cause of the accident: overpressure, overtemperature, container local damage, such as safety device failure. Hazard: A. shock wave and its damage: shock wave overpressure cause casualties and the destruction of buildings. B. damaging effects of blasting fragments: cause serious injury or death, damage to nearby equipment and pipelines, and cause secondary accidents. C. medium damage: medium damage mainly is the poison of toxic medium and high temperature steam burns. D. secondary explosions and burning: when a container by holding the medium for combustible liquefied gas, vessel rupture explosion of flammable vapors at the scene, and mixed with air to form explosive mixture, as soon as possible.we encounter in diffusion flame namely form secondary explosions, often make near the scene of a fire, causing serious harm.
The cause of pressure vessel accident are various, can be summarized as the following: (1) design. Pressure vessel design do not conform to the requirements of the standards, specifications, USES the design of some unreasonable structure; (2) manufacturing. Manufactured, the welding quality is poor: there is porosity, slag inclusion, incomplete fusion, incomplete fusion, welding defects such as weld improper arrangement, etc. (3) installation. On-site installation, due to the site conditions is poorer, electrode welding or a strong assembly without drying, etc.; (4) using aspects. Not according to the degree of open parking requirements. Operators don't understand the professional technology, etc.; 5. Inspection and repair. Not according to the rules of the "pressure vessel safety technology requirements for periodic inspection, container overterm service, unauthorized repair, container structure and USES change, etc.; 6. Not perfect safety accessories. Lost spirit, accurate, steady; All landowners enterprise management, technology management confusion. Do not take the safety in production, ignoring the national technical regulations, no strict rules to follow, illegal orders, etc.
