1 / 16

Enhancing Water Pressure and Quality: A Comprehensive Analysis

This presentation analyzes water pressure and quality improvement measures demonstrated by Kris Bruun and Steve Roznowski. A 480-hour simulation evaluated the fire flow demands for both 3-story and 1-story buildings, revealing insufficient pressure levels in certain areas. Key findings include the introduction of new pipes to enhance flow, chlorine residual management, and the impact of contaminants. The analysis emphasizes the balance between cost and operational efficiency in water systems to enhance safety and efficacy, particularly concerning potential contamination risks.

warren
Télécharger la présentation

Enhancing Water Pressure and Quality: A Comprehensive Analysis

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Water Pressure and Quality Improvement Analysis Presented by: Kris Bruun Steve Roznowski 14 October 2008

  2. System Setup • 480 Hour Simulation • Connect Fire Nodes • Verify Pipe Characteristics • Allow 48 hours for the system to stabilize

  3. Base System

  4. Normal Pressures • Met minimum requirements • Minimum was 59psi • No changes required to improve normal operating pressures

  5. Fire Demand • 3-story buildings at hydrants 1-5 • Demand of 2,750 gpm for 2 hours • 1-story buildings at hydrants 6-10 • Demand of 1,500 gpm for 2 hours • Improvements needed to meet 3-story demand • Southwest loop did not meet base requirement • Run at worst-case times • Maximum demand at lowest tank level

  6. Improved Fire Flow at Hydrants 2 and 10 Modified system with loops to improve flow in these areas.

  7. Fire Flow Improvement

  8. Age Analysis • For a 480 hour duration model: • Initial max age = 408 hours • Modified max age = 122 hours • Balance between cost and improvement • Added pipes to improve flow paths • Reduced storage tank level • Re-checked fire flows

  9. The pipes indicated by the red dots were added explicitly for age analysis.

  10. Chlorine Analysis • Tested at various clearwell concentrations • Maintain residuals of 0.2-4.0 mg/L • Lower is more cost-effective • Looped system increased residual levels • 2 mg/L at the clearwell was selected

  11. Chlorine Improvement

  12. Contaminant VX • Toxic nerve agent lethal at 50 µg/L if ½ L is consumed • Introduced at most vulnerable location • Point where flow diverges • At exit from the tank • 60 gallons introduced at 100 mg/L over 1 hour

  13. Contaminant Continued… • Looped system allowed contaminant to persist longer • Focus on defending key areas • Pressure increase may not be noticeable

  14. Contaminant Propagation

  15. Conclusions • Contaminant detection and security are best measures of defense • Increased efficiency increases risk of terrorism • A balance between cost and flow optimization must be found

  16. Questions?

More Related