70 research outputs found
Screw Compressors
Discussion GroupAPI Standard 619 for screw compressors
Wet and dry
Silencers for dry screw compressors
Noise reduction methods
Lubricants and lubricant carryover for flooded screw compressor
Over-compression and under-compression
Pulsation and vibration issue
Cavitation/NPSH (Field Problems)
Discussion GroupUnexpected cavitation erosion
Key parameters to consider for Root Cause Analysis when experiencing cavitation damage
NPSHR, NPSHA, NPSH margin
Performance loss due to insufficient NPSHA (margin)
NPSH 40,000 hours
Cavitation erosion rate and impeller life assessment
Impact of dissolved and/or entrained gas
Pumping hot water or hydrocarbons
Reliability of operating with low NPSHA on hydrocarbons
High cavitation-resistant materials
Common types of pump cavitation, including: sheet cavitation, suction recirculation induced vortex cavitation, corner (vortex) cavitation, and tip vortex cavitation
Suction specific speed
Field cases (suggested by audience) : Quick fix and ultimate solutio
Initial Concept of Operations for Full Management by Trajectory
This document describes Management by Trajectory (MBT), a concept for future air traffic management (ATM) in which flights are assigned four-dimensional trajectories (4DTs) through a negotiation process between the Federal Aviation Administration (FAA) and flight operators that respects the flight operator's goals while complying with National Airspace System (NAS) constraints
Monitoring Vibration and Other Critical Machine Conditions
Discussion GroupSuggested Topics:
Condition monitoring methods
Effectiveness of condition monitoring on rotating equipment
Value of, and ROI of, condition-based monitoring
Vertical pump monitoring
Below ground monitoring in vertical pumps
Vertical pump vibration standards
Vertical turbine pump structural resonance analysis
Vibration test methods and proper use
Standard locations for vibration measurement on horizontal machinery
Wireless devices: radio noise, effectiveness, experiences, security
Troubleshooting methods and fix options
Operating Deflection Shapes and integration with condition-based monitoring
Finite element analysis application in support of selection, and troubleshooting
Rotordynamics
Hydraulically-induced vibration: structural, system, rotor
Hydraulic and aerodynamic system issues, including acoustics
Measurement of severity of unsteady cavitation conditions
Effect of high GVF (gas volume fraction) in centrifugal pumps
Mechanical installation (e.g. piping, foundation, alignment) issues
Modular pump installations, i.e. experience with non-grouted baseplates
Seals and bearings how they affect vibratio
Screw Compressors
Discussion GroupAPI Standard 619 for screw compressors
Wet and dry
Silencers for dry screw compressors
Noise reduction methods
Lubricants and lubricant carryover for flooded screw compressor
Over-compression and under-compression
Pulsation and vibration issue
Cavitation/NPSH (Field Problems)
Discussion GroupUnexpected cavitation erosion
Key parameters to consider for Root Cause Analysis when experiencing cavitation damage
NPSHR, NPSHA, NPSH margin
Performance loss due to insufficient NPSHA (margin)
NPSH 40,000 hours
Cavitation erosion rate and impeller life assessment
Impact of dissolved and/or entrained gas
Pumping hot water or hydrocarbons
Reliability of operating with low NPSHA on hydrocarbons
High cavitation-resistant materials
Common types of pump cavitation, including: sheet cavitation, suction recirculation induced vortex cavitation, corner (vortex) cavitation, and tip vortex cavitation
Suction specific speed
Field cases (suggested by audience) : Quick fix and ultimate solutio
Monitoring Vibration and Other Critical Machine Conditions
Discussion GroupSuggested Topics:
Condition monitoring methods
Effectiveness of condition monitoring on rotating equipment
Value of, and ROI of, condition-based monitoring
Vertical pump monitoring
Below ground monitoring in vertical pumps
Vertical pump vibration standards
Vertical turbine pump structural resonance analysis
Vibration test methods and proper use
Standard locations for vibration measurement on horizontal machinery
Wireless devices: radio noise, effectiveness, experiences, security
Troubleshooting methods and fix options
Operating Deflection Shapes and integration with condition-based monitoring
Finite element analysis application in support of selection, and troubleshooting
Rotordynamics
Hydraulically-induced vibration: structural, system, rotor
Hydraulic and aerodynamic system issues, including acoustics
Measurement of severity of unsteady cavitation conditions
Effect of high GVF (gas volume fraction) in centrifugal pumps
Mechanical installation (e.g. piping, foundation, alignment) issues
Modular pump installations, i.e. experience with non-grouted baseplates
Seals and bearings how they affect vibratio
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