Device security

The design life of pressure vessels is primarily documented on the nameplate, in the design calculation report, on the as‑built drawings, and in the periodic inspection reports. When reviewing these documents, it is essential to distinguish between design‑based…

The classification of pressure vessels in screw air compressor oil–gas separators has long been a subject of close attention. This article clarifies the criteria for defining simple pressure vessels, examines the differences in regulatory classification between small and…

The screw air compressor’s main unit itself is not classified as a pressure vessel; however, its associated air receiver tank and the internal oil–gas separator are legally designated as pressure vessels or simple pressure vessels when they meet…

The screw compressor unit itself is generally not classified as a special‑purpose device under national regulations. However, its associated components—such as air receivers, pressure pipelines, and safety accessories—are subject to special‑equipment oversight if they meet the statutory pressure…

The screw-type air compressor unit itself is not classified as a special‑purpose device; however, the associated air receivers and pressure pipelines, when they meet specific parameter thresholds, are included in the catalog of special‑purpose equipment and subject to…

An air compressor is not necessarily a pressure vessel; the determining factors are whether it is equipped with pressure-bearing components such as an air receiver tank, and what its design pressure, volume, and applicable regulatory requirements are. In…

Whether an air compressor is suitable for placement in a public space hinges on factors such as noise levels, vibration, ventilation, heat dissipation, electrical safety, and personnel protection. If the equipment is located near walkways, crowds, or enclosed…

The discharge pressure of an air compressor should not be set arbitrarily based on experience; it should be capped at the equipment’s nameplate‑rated discharge pressure, the system’s design pressure, and the allowable pressure at the point of use.…