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Transient Pressure Surges Prompt Force Main & Pump Station Reevaluation

Problem

A sanitary pumping station and 16” diameter force main serving the Village of Richfield has a history of transient pressure surges (water hammer) and began to experience frequent main breaks. CTI was contacted to perform a transient analysis of the pumping system and recommend improvements to alleviate water hammer and minimize the likelihood of future main breaks.

 

Solution

A transient computer model was developed to study the existing system and potential improvements to minimize the transient response of the system. The 30-year-old pump station is nearing the end of its expected useful life, so multiple surge protection devices and station operating changes were evaluated which could be implemented if the Village decides to maintain, rehabilitate, or completely replace the station. A phased force main repair and inspection project was conceived to be implemented following selection and construction of pump station improvements.

 

Project Elements

  • Hydraulic pressure transient modeling
  • Alternatives review and feasibility study
  • Design of pump station improvements
  • Force main design

 

CTI Services

  • Preliminary Design
  • Cost Estimating
  • Design Services
  • Studied existing system and potential improvements to minimize transient response of the system
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Client

Village of Richfield, OH

Project Cost

$350,000 (Station Rehab), $940,000 (Station Replacement)

Funding

Local

CTI Personnel on project

Dave Kohlmeier, PE

Zak Kaczor, PE

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