DXP-EMD-Logo-Transparent-4

Managing Transients to Prolong Critical Infrastructure

Understanding System Scenarios with Air Valves, Check Valves, and Surge Mitigation Options for Water and Wastewater Systems.

 

 

Why do we need a surge analysis?

  • To determine why the pipeline is breaking.
  • For new designs to make sure the pipeline doesn't break.
  • To make sure the pipeline stays pressurized to meed regulatory requirements.
charts

Surge Analysis - Peer Review

Working with end users and engineers is key to optimizing a system.  Aging infrastructure coupled with project expansions all need to be taken into consideration on the potable water, reclaimed water, and even pressurized force main systems.  

Potential effects on a water system

  • More frequent leaks or bursts
  • Pipe collapse
  • Pump and valve failure
  • More frequent broken seals
  • Damaged pilots on valves
  • Outside intrusion (health risks)
  • Poor or unacceptable service
Money down the drain

Data to preform a surge analysis...

If a hydraulic model already exists, we can work with an EPANET file export generally to preform the surge analysis.  If a model does not exist, we need to obtain the below system data:

  • Pipeline plan and profile
  • Pipe materials
  • Pipe size
  • Air valves sizes and locations along the line
  • Pump station setup (including pump curves)
  • Operating scenarios
  • Storage tank levels
computer and model

What Causes Pressure Surges?

Rapid change in flow rate caused by:

 

Valves

Opening and closing too quickly.

 

gate valve

Pumps

Start-up, stop, power failure.

 

pump

Check Valves

Slamming.

 

 

check valve

Air/Vac Combinations

Air Slam.

 

air valve

 

Worst-case analyzed...power failure at max flow.

 

Fill out the form below for us to connect with you.

 

 

Let's Stay Connected!