HI 9.6.9-2013 PDF Download

This new guideline was released in 2013 to discuss condtion monitoring in rotary pumps for both sealed and sealless pump designs. It should be noted that there is a separate standard available which covers the Rotodynamic pumps. While monitoring is not a requirement, this guideline sets strategies for when and how to monitor pumps. Control limits have been recommended, where appropriate, for those indicators whose limits are not defined in other Hydraulic Institute Standards. Various failure modes can be characterized by the following observations and processes:

• Power Absorbed
• Temperature
• Leakage
• Pressure (Suction, Discharge, Differential)
• Vibration
• Rate of Flow
• Speed (RPM)

How each of these indicators are monitored as well as the limits for each are discussed in detail throughout this document.