Overview
EN ISO 10439-2:2015 (equivalent to ISO 10439-2:2015) defines minimum requirements and gives recommendations for non‑integrally geared centrifugal and axial compressors used in the petroleum, petrochemical and natural gas industries. It supplements the general requirements in ISO 10439‑1 and applies to single‑shaft and externally‑geared machines used for handling gas or process air in special‑purpose applications. “Non‑integrally geared” indicates that gears are not integral with the casing (external gearing is permitted).
Key topics and technical requirements
This standard addresses the full lifecycle of axial and centrifugal compressors with a focus on safe, reliable and consistent engineering practice. Major technical topics covered include:
- Design and performance: basic design principles, required performance documentation and unit responsibility.
- Materials and casings: material selection, pressure‑containing casing requirements, casing repair and inspection.
- Rotating elements: shafts, impellers, axial rotor blading and thrust balancing.
- Dynamics and vibration: guidance on dynamic behaviour and acceptable limits.
- Bearings and seals: hydrodynamic radial and thrust bearings, bearing housings and shaft end seals.
- Accessories: drivers, couplings, lubrication and sealing systems, controls, piping and guards.
- Inspection, testing and commissioning: factory inspection, full‑load/full‑pressure/full‑speed testing, and preparation for shipment.
- Supplier and vendor requirements: mandatory datasheets, vendor data and drawing requirements (VDDR), and supplier documentation.
- Informative annexes: standardized datasheets, nomenclature, typical materials, inspector checklists, nozzle forces and testing recommendations.
Practical applications and who uses this standard
ISO 10439‑2 is used to ensure compressor safety, interchangeability and predictable performance across industrial installations. Typical users:
- Compressor and turbomachinery manufacturers (design and QA teams)
- EPC contractors and plant designers specifying compressor packages
- Procurement and contract engineers preparing technical purchase specifications
- Operations, maintenance and reliability engineers using inspection and test requirements
- Third‑party inspectors and certification bodies performing acceptance tests
Practical applications include writing supplier specifications, verifying vendor data packages, setting factory test procedures, and defining maintenance/inspection checklists for axial and centrifugal compressors.
Related standards and keywords
- Related: ISO 10439‑1 (general requirements for axial and centrifugal compressors and expander‑compressors)
- SEO keywords: axial compressors, centrifugal compressors, expander‑compressors, non‑integrally geared compressors, ISO 10439‑2, compressor testing, petroleum industry compressors, compressor design standard
This standard is essential when specifying, procuring or commissioning non‑integrally geared axial and centrifugal compressors for petroleum, petrochemical and natural gas facilities.