Overview
EN ISO 10440-1:2007 (ISO 10440-1:2007) is a CEN-endorsed international standard for rotary-type positive-displacement process compressors used in the petroleum, petrochemical and natural gas industries. It specifies requirements for dry and oil‑flooded helical‑lobe (screw) rotary compressors used for vacuum, pressure or both in special‑purpose process applications. The standard is not applicable to general‑purpose air compressors, liquid‑ring compressors or vane‑type compressors.
Key topics and technical requirements
The standard covers the full life‑cycle of process compressors with emphasis on safe, repeatable engineering and procurement:
- Basic design and mechanical requirements: pressure casing, casing connections, external forces and moments, rotating elements.
- Rotordynamics and vibration control: residual unbalance, dynamic behavior and allowable forces (normative annexes address forces/moments and unbalance procedures).
- Sealing, bearings and lubrication: shaft seals, bearing selection, bearing housings, lube‑oil and seal‑oil systems (includes typical pressurized oil schematics).
- Materials, fabrication and quality: material selection guidance, nameplates, and documented quality requirements.
- Accessories and integration: driver selection, couplings, guards, mounting plates, controls, piping, intercoolers/aftercoolers, inlet filtration and separators.
- Inspection, testing and shipping: factory inspection, testing protocols, preparation for shipment and inspector checklists.
- Vendor documentation and datasheets: required proposal and contract data, with typical datasheets and vendor drawing requirements provided in informative annexes.
Normative references include ISO documents relevant to threads, bearings and metric screw threads (for example ISO 7, ISO 261, ISO 281), and the standard was developed in close alignment with API 619.
Applications and who uses it
This standard is intended for:
- Compressor manufacturers and OEMs designing helical‑lobe rotary compressors for process service.
- EPC contractors and plant engineers specifying compressor equipment in refineries, petrochemical plants, gas processing and related process units.
- Procurement and quality assurance teams preparing purchase specifications and vendor evaluations.
- Inspection, testing and commissioning teams that validate vendor testing, inspection and documentation.
- Maintenance and reliability engineers applying guidance on bearings, seals and oil systems.
Typical uses: hydrocarbon gas compression, process vacuum or boost duties, and other special‑purpose process applications within petroleum, petrochemical and natural gas facilities.
Related standards
- ISO 10440-2 - Part 2: Packaged air compressors (oil‑free)
- API 619 - The API standard that ISO 10440-1 is based on and intended to align with
- Relevant ISO normative references cited within the standard (e.g., ISO 281 for bearing life)
Keywords: ISO 10440-1, EN ISO 10440-1:2007, rotary-type positive-displacement compressors, helical-lobe rotary compressors, process compressors, compressor standards, API 619, petroleum petrochemical natural gas.
