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Waterhammer News

 

 

How to mitigate harm to your piping systems caused by waterhammer  

 

EMERGENCIES ARE UNAVOIDABLE

Do you have a mitigation plan? 

 Walt Prentice, an AFT Applications Engineer, recalls a waterhammer
project with an oil transport system that 
was experiencing failures due
to age. Unfortunately, there were inadequate processes to stop the flow in the event of an emergency. No one knew the best way to shut off the valves, and consequently, improper closing could lead to catastrophic failures. To be
better prepared for the next emergency, 
AFT Impulse™ was used to model
and test the safest emergency closure methods, ensuring the surge would be manageable. This resulted in a trustworthy, actionable plan for future emergency shutdowns.


Prevent further failures & downtime. Gain the knowledge
you need to prevent waterhammer accidents before they happen.

 

Webinar Image

Basics:
BECOME A
WATERHAMMER ANALYST 

One of the toughest aspects of hydraulic system
design is accepting your system cannot always
operate at steady state. Whether system transients
are intentional or unintentional, understanding their
impact on your system is critical. In this webinar,
overview how to define and analyze rapid transients with AFT Impulse.


 ​​​​​​

Tech Paper Image

UNDERSTANDING WATERHAMMER
IN PUMPING SYSTEMS & SURGE SUPPRESSION OPTIONS

Waterhammer in pumping systems is an area of frequent concern to designers and operators. It has the potential to cause catastrophic failures if not properly addressed. 

This paper provides an overview of the waterhammer phenomenon, resources for engineers to assess waterhammer issues at the design stage and, for problematic systems already in operation.


WATERHAMMER STANDARDS:
BE A PART OF THE CHANGE

The Hydraulic Institute is forming a new advisory committee to provide guidance
to industry on waterhammer.


There is a growing need within the industry
and academia for authoritative guidance
on evaluating waterhammer in piping within facilities as well as pipeline delivery systems.
We are looking for
 experts from all reaches of fluid transfer system engineering to join us.

To join the committee
or for more information, please contact This email address is being protected from spambots. You need JavaScript enabled to view it.

 

 
Committee Invite Image

UPCOMING TRAINING

No matter your user level with AFT software products, we have training and assistance available
to help you continue your education, or tools to advance your knowledge to expert levels.

 
Webinar Image Pumps as Turbines Image

WEBINAR
AFT Impulse 9,
​​​​​You're In For a Great Time!

Wednesday, April 20, 2022
10:00 AM - 11:00 AM (MDT)

We have yet again taken AFT Impulse many steps forward with our newest version that contains some powerful AFT Impulse specific new features including:

  • Dramatic re-design of the Gas Accumulator
    junction with the ability to calculate liquid heights
    for various accumulator geometries
  • Minor losses for elbows, orifice plates,
    venturis, and screens can now be
    explicitly modeled as junctions
  • Valve transients can now be modeled
    as open percentage vs. time in addition
    to the traditional Cv vs. time or K factor vs.
    time methods
  • Multi-scenario graphs can be plotted
    when scenarios use different pipe
    sectioning and time steps

WEBINAR
Pumps as Turbines:
​​​​​The Pump that Produces Electricity

Wednesday, April 6, 2022
10:00 AM - 11:00 AM (MDT)

Pump As Turbine (or PAT) is a pump that can be used as a turbine to produce electricity. The PAT takes advantage of the fact that a motor can be used as a Generator if you reverse the process. This webinar will discuss using PAT, Turbine and Power Curves, Decoupling Speeds, No Load Curves as well as demonstrate how to model PAT in AFT Fathom (with XTS) and AFT Impulse.







 

 

 

    How to mitigate harm to your piping systems caused by waterhammer     EMERGENCIES ARE UNAVOIDABLE .  Do you have a mitigation plan?    Walt Prentice, an AFT Applications Engineer, recalls a waterhammer project with an oil transport system that  was experiencing failures due to age. Unfortunately, there were inadequate processes to stop the flow in the event of an emergency. No one knew the best way to shut off the valves, and consequently, improper closing could lead to catastrophic failures. To be better prepared for the next emergency,  AFT Impulse™ was used to model and test the safest emergency closure methods, ensuring the surge would be manageable. This resulted in a trustworthy, actionable plan for future emergency shutdowns. Prevent further failures & downtime. Gain the knowledge you need to prevent waterhammer accidents before they happen.   Basics: BECOME A WATERHAMMER ANALYST  One of the toughest aspects of hydraulic system design is accepting your system cannot always operate at steady state. Whether system transients are intentional or unintentional, understanding their impact on your system is critical. In this webinar, overview how to define and analyze rapid transients with AFT Impulse.   ​​​​​​ UNDERSTANDING WATERHAMMER IN PUMPING SYSTEMS & SURGE SUPPRESSION OPTIONS Waterhammer in pumping systems is an area of frequent concern to designers and operators. It has the potential to cause catastrophic failures if not properly addressed.  This paper provides an overview of the waterhammer phenomenon, resources for engineers to assess waterhammer issues at the design stage and, for problematic systems already in operation. WATERHAMMER STANDARDS: BE A PART OF THE CHANGE The  Hydraulic Institute  is forming a new advisory  committee to provide guidance to industry on waterhammer. There is a growing need within the industry and academia for authoritative guidance on evaluating waterhammer in piping within facilities as well as pipeline delivery systems. We are looking for  experts from all reaches of fluid transfer system engineering to join us. To join the committee or for more information, please contact This email address is being protected from spambots. You need JavaScript enabled to view it.     UPCOMING TRAINING No matter your user level with AFT software products, we have training and assistance available to help you continue your education, or tools to advance your knowledge to expert levels.   WEBINAR AFT Impulse 9, ​​​​​You're In For a Great Time! Wednesday, April 20, 2022 10:00 AM - 11:00 AM (MDT) We have yet again taken AFT Impulse many steps forward with our newest version that contains some powerful AFT Impulse specific new features including: Dramatic re-design of the Gas Accumulator junction with the ability to calculate liquid heights for various accumulator geometries Minor losses for elbows, orifice plates, venturis, and screens can now be explicitly modeled as junctions Valve transients can now be modeled as open percentage vs. time in addition to the traditional Cv vs. time or K factor vs. time methods Multi-scenario graphs can be plotted when scenarios use different pipe sectioning and time steps WEBINAR Pumps as Turbines: ​​​​​The Pump that Produces Electricity Wednesday, April 6, 2022 10:00 AM - 11:00 AM (MDT) Pump As Turbine (or PAT) is a pump that can be used as a turbine to produce electricity. The PAT takes advantage of the fact that a motor can be used as a Generator if you reverse the process. This webinar will discuss using PAT, Turbine and Power Curves, Decoupling Speeds, No Load Curves as well as demonstrate how to model PAT in AFT Fathom (with XTS) and AFT Impulse.      

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