Is a screw-type air compressor considered special equipment?

I. Definition of the Air Compressor Host Unit

According to the current “Catalogue of Special Equipment,” a standalone screw-type air compressor unit—i.e., the mechanical body that performs gas compression—is not included in the catalogue. Consequently, the compressor unit itself is not required to undergo usage registration or periodic inspection in accordance with the procedures for special equipment.

II. The Special Equipment Status of the Accompanying Gas Storage Tank

Although the air compressor host is not classified as special equipment, the components used in conjunction with it…Gas storage tankThey often fall under the “pressure vessel” category of special equipment. Whether a gas storage tank qualifies as special equipment is primarily determined by its working pressure and volume parameters:

• Included in special equipment management:When the maximum working pressure of the gas storage tank is greater than or equal to 0. 1MPa (gauge pressure), and the product of pressure and volume is greater than or equal to 2. 5MPa ·At L, it is generally classified as a stationary pressure vessel or a simple pressure vessel and must be brought under the management of special equipment regulations.
• Exemption circumstances:Gas storage tanks with small capacities or low pressures, if they meet the relevant exemption criteria or do not reach the threshold parameters for classification as special equipment, are not required to undergo mandatory registration as special equipment.

III. Safety Supervision of Pressure Piping

In addition to the air receiver tank, the system connecting the air compressor, the air receiver tank, and the end-use gas equipment…Pressure pipelineIf its maximum working pressure, nominal diameter, and the characteristics of the conveyed medium meet the criteria for pressure pipelines as defined in the relevant catalog, it likewise falls within the scope of special equipment and must, in accordance with the law, undergo installation notification, supervisory inspection, and usage registration.

IV. Recommendations for Enterprise Equipment Management

To mitigate compliance risks and ensure operational safety, companies using screw-type air compression systems should pay attention to the following points:

• Verify equipment parameters:Carefully examine the design pressure, volume, and other data listed on the gas storage tank’s nameplate to determine whether it falls within the scope of the special equipment catalog.
• Register in accordance with the law:For gas storage tanks and pressure pipelines that have been designated as special equipment, users must, within the prescribed time limits before and after putting them into service, complete the registration procedures with the local special equipment safety supervision and administration authority.
• Regular inspection and maintenance:In strict accordance with the requirements of safety technical specifications, submit an application for periodic inspection prior to the expiration of the inspection validity period, and ensure that routine maintenance and servicing are performed by a qualified entity.