What is a pressure vessel license? What are the pressure vessels that require a pressure vessel license?
Pressure vessel licenses are divided into stationary pressure vessel licenses and mobile pressure vessel licenses.
1. Fixed pressure vessel license includes fixed pressure vessel production license, fixed pressure vessel manufacturing license, and fixed pressure vessel design license
2. Mobile pressure vessel licenses include mobile solid pressure vessel production license, mobile pressure vessel manufacturing license, and mobile pressure vessel design license
pressure vessel concept
A pressure vessel refers to a closed device that contains gas or liquid and carries a certain pressure. Fixed containers and mobile containers with a volume greater than or equal to 30L and an inner diameter (non-circular section refers to the maximum geometric dimension of the inner boundary of the section) greater than or equal to 150mm; the nominal working pressure is greater than or equal to 0.2MPa (gauge pressure), and the pressure Gas, liquefied gas and gas cylinder whose standard boiling point is equal to or lower than 60℃; oxygen tank.
Pressure Vessel Application and Classification
The use of pressure vessels is extremely extensive, and it has an important position and role in many sectors such as industry, civil use, military industry, and many fields of scientific research. Pressure vessel is a multi-industry and multi-disciplinary comprehensive product. Its construction technology involves metallurgy, machining, corrosion and anti-corrosion, non-destructive testing, safety protection and many other industries. Pressure vessels are widely used in chemical, petroleum, machinery, power, metallurgy, nuclear energy, aviation, aerospace, marine and other departments. It is an essential core equipment in the production process and an important symbol of a country's equipment manufacturing level.
Spherical pressure vessels can be used to store various gases, liquefied petroleum gas, liquefied natural gas, liquid hydrocarbons, liquid ammonia, liquid nitrogen, liquid oxygen and liquid hydrogen, etc.
Cylindrical pressure vessels are the most common structural form. They have the advantages of simple structure, easy manufacture, and easy installation of accessories inside. They are widely used as reactors, heat exchangers, separators and small and medium-volume storage vessels.
Pressure Vessel Safety Inspection Methods
Non-destructive testing technology is mainly used for safety inspection of pressure vessels. Non-destructive testing technology refers to the use of effective testing technology to carefully inspect and test the surface, internal structure, state, properties and other conditions of the testing object without damaging the internal organization and performance of the testing object. Non-destructive testing technologies for pressure vessels mainly include ultrasonic testing technology, infrared testing technology, penetrant testing technology, magnetic particle testing technology and radiographic testing technology. At present, new detection technologies such as acoustic emission detection, phased array detection, TOFD detection, electromagnetic pulse detection, and RBI-based risk assessment are also being promoted and used.
Dangerous goods transport vehicle