Overview
ISO 10816-7:2009 specifies procedures for evaluating mechanical vibration of rotodynamic pumps for industrial applications by measurements on non-rotating parts (primarily bearing housings). It applies to pumps with nominal power above 1 kW, provides guidance for in‑situ and factory acceptance tests, and also gives general information for measuring relative shaft vibration. The standard is intended to support operational monitoring, acceptance testing and diagnostic/condition‑monitoring activities.
Key topics and technical requirements
- Scope and exclusions
- Covers rotodynamic (centrifugal and similar) pumps > 1 kW.
- Excludes reciprocating and positive-displacement pumps, certain high‑power hydro plants, solids/slurry and submersible pumps.
- Measurement quantities
- Primary quantity: r.m.s. vibration velocity (mm/s) measured on non‑rotating parts.
- For speeds below 600 r/min, peak‑to‑peak displacement (µm) is additionally required.
- Instrumentation and frequency range
- Instruments must meet ISO 2954 and ISO 10816‑1 requirements.
- Typical broadband frequency range: 10 Hz to 1 000 Hz; for low‑speed pumps the lower limit is often 2 Hz.
- For very high‑speed or diagnostic work, wider bandwidth (up to ~2.5× blade‑passing frequency) may be needed.
- Measurement locations and directions
- Vibration measured at bearing housings, normally in two orthogonal radial directions (horizontal/vertical) and where relevant an axial direction.
- Locations should represent bearing housing motion without local resonance/amplification.
- Evaluation and limits
- Defines evaluation zones and limits for bearing housing vibration, and gives guidance for alarm and trip settings (see Annex C).
- Distinguishes pumps by power ranges (notably up to and above 200 kW) for some evaluations.
- Monitoring
- Supports both periodic portable measurements and continuous online monitoring; continuous monitoring is recommended for safety‑critical pumps.
- Annexes
- Include numerical evaluation zone limits, guidance on shaft vibration for sleeve bearings, example alarm/trip setting, and considerations for support flexibility and orientation.
Applications
- Acceptance testing at manufacturer or plant test facilities.
- Condition monitoring and predictive maintenance programs.
- Troubleshooting and diagnostics following vibration anomalies.
- Defining alarm/trip thresholds and operational limits to protect pump systems and connected equipment.
- Specifying vibration measurement protocols in procurement and contractual acceptance criteria.
Who uses this standard
- Pump manufacturers and test laboratories
- Plant and rotating‑equipment engineers
- Maintenance teams and vibration analysts
- OEMs, reliability and asset‑management professionals
- Safety and commissioning engineers
Related standards
Keywords: ISO 10816-7, mechanical vibration, rotodynamic pumps, bearing housing vibration, r.m.s. vibration velocity, pump vibration measurement, condition monitoring, acceptance test, vibration instrumentation.
Open preview (PDF)Mechanical vibration — Evaluation of machine vibration by measurements on non-rotating parts — Part 7: Rotodynamic pumps for industrial applications, including measurements on rotating shafts
