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Limiting Vibration Issues in  Vertical Turbine Pumps

	
		
The increasing use of variable speed drives has made resonance problems more prevalent.

	
           
        	













  



  

    





	
			
Troubleshooting Vibration Issues Without an Expensive Analyzer 

	
		
Crunching numbers and evaluating costs are critical steps in determining the best way to maintain equipment. 

	
           
        	













  



  

    





	
			
Calibrate Faster, Smarter & More Accurately

	
		
Small teams can double the amount of calibrations they carry out with multifunction, documenting equipment.

	
           
        	













  



  

    





	
			
How to Protect Pumps from Costly Rotor Vibrations

	
		

	The reliability of high-speed and high-pressure pumps is crucial to several industries in the Middle East and North Africa. Oil and refinery services and desalination operations, for example, depend...	

	
           
        	













  














  

    





	
			
The Basics of Spectral Resolution for Motor Vibration Analysis

	
		
Revisiting the fundamentals of data examination, time and resolution can solve equipment issues before they happen.

	
           
        	













  



  

    





	
			
Overcome Resistance to Program Upgrade

	
		

	Previous articles in this series explained how oversized piping systems can have higher operating and maintenance costs. Higher maintenance costs can adversely affect the reliability and uptime of...	

	
           
        	













  



  

    





	
			
Gain Insights by Analyzing Top-of-Motor Vibration (Part 1 of 2)

	
		
Use a mathematical model that estimates vibration at the top bearing of a motor used on a vertical, wet-pit, column type pump.

	
           
        	













  



  

    





	
			
How to Detect & Monitor Cracks in Pumps

	
		
Vibration changes can indicate cracks in pump rotating components, which can cause severe malfunction and failure.

	
           
        	













  












  

    





	
			
HI Pump FAQs: NPIPA & NPIPR, Vertical Pumps with Hollow-Shaft Drives & Vibration Monitoring

	
		

	Q. What information is available regarding NPIPA and NPIPR for rotary pumps?

A.  Net positive inlet pressure available (NPIPA) is the algebraic sum of the inlet and barometric pressure minus the...	

	
           
        	













  



  

    





	
			
Innovative Motor & Gearing Technologies  for High-Capacity, Low-Head Pumps

	
		
Reduce high vibration and increase reliability with CST gear motor technology in power generation applications.

	
           
        	













  



  

    





	
	
Top-of-Motor Vibration
		
Top-of-Motor Vibration

	
		
A simple mathematical model can be used to estimate vibration at the top of the motor in a vertical pump-motor structure.

	
           
        	













  



  

    





	
			
Shock Monitoring Technology for Reciprocating Compressors

	
		

	Overall vibration trending is excellent for monitoring rotating machinery health, but not generally effective for tracking reciprocating compressors. A new generation of Reciprocating Machinery...	

	
           
        	













  



  

    





	
			
Assessing Vibration Data Through Comparative Analysis

	
		

	Comparing the vibration performance of identical or like machines can be used to detect defects and judge their severity.

What is Comparative Analysis?

Comparative analysis is a simple yet...	

	
           
        	













  



  

    





	
			
Mechanical Pressure Gauges Installed in Harsh Environments

	
		

	Although the use of transmitters in pressure measurement is growing, mechanical pressure gauges are still used on most systems as local pressure display to back up electrical readings. The selection...	

	
           
        	













  



  

    





	
			
Product Innovation of the Year 2010 4th Place: LUDECA

	
		

	VIBXPERT II

Innovation

Introduced in June 2010, the VibXpert II (VXP II) has many different uses and functions. The primary use is to extend the lifespan of equipment within a plant or facility...	

	
           
        	













  



  

    





	
			
Pump Connector is a Valuable Part of a Properly Operating System

	
		

	Everybody knows that a rotating part or pump is going to produce vibration. Service personnel in the pump repair business, the air compressor industry, and electrical power generator providers all...	

	
           
        	













  



  

    





	
			
Pump-to-Motor Alignment: Why 0.002-in and Not 0.020-in?

	
		
Proper shaft alignment makes a difference

	
           
        	













  



  

    





	
			
Pump-to-Motor Alignment: Why 0.002-in and Not 0.020-in?

	
		

	Last September, we spoke about the importance of pipe-to-piping alignment, evaluating actual numbers, and tabulating stress values as they approach yield stress of pipe at various values of...	

	
           
        	













  



  

    





	
			
Revisiting Pump-to-Motor Alignment: Why 0.002-in and Not 0.020-in?

	
		

	Intuition is wonderful, but sometimes deceiving. For example, I have always intuitively felt that "the better the alignment, the longer the pump life." But intuitively preaching about the horrors of...	

	
           
        	













  



  

    





	
	
Field Balancing
		
Field Balancing

	
		

	One common definition of balance is when the mass centerline and the rotational centerline of a rotating part are equal. Another definition is when zero vibratory force or vibratory motion is imparted...