Intersections: Monitoring with Modeling in Mind
November 17, 2022
Sewer flow monitoring provides insight into sewer performance, and that insight is often revealed where it intersects with related activities that provide additional perspective and context to flow measurements. Sewer modeling represents one such point of intersection. Wastewater engineers use hydrologic and hydraulic models to better understand system performance with applications that include master planning, infiltration and inflow analysis, and operational optimization. Flow monitoring and rainfall monitoring are critical components of any modeling effort, and this webinar will discuss the collaboration required for a successful outcome.
SPEAKER: Hatem El-Sayegh, PH.D., P.E. and Kevin Enfinger, P.E.TIME: 1 hour
Lessons Learned from Three Decades of I/I Work
June 23, 2022
Patrick has spent more than 50 years in the wastewater and collection system engineering field as a Regulator, an Owner and a Consultant. Thirty of those years have been devoted to Infiltration & Inflow (I/I) and over that time many Rules-of-Thumb and Tricks-of-the-Trade have been formulated and refined by asking Project Managers, “If you could do this project over, what would you do differently?” This webinar will address several of these issues including: (1) a strategy for meter placement to achieve a uniform basin size and get maximum information, (2) a strategy for assuring a successful pre- and post-rehabilitation metering program, and (3) best and worst methods for quantifying and normalizing I/I.
SPEAKER: Patrick Stevens, P.E.TIME: 1 hour
Intersections: Assessing Sewer Performance Based on Sewer Design Guidelines
MAY 26, 2022
Sewer flow monitoring provides insight into sewer performance, and that insight is often revealed where it intersects related activities that provide additional perspective and context to flow measurements. Sewer design represents one such point of intersection. Wastewater engineers use various guidelines to design new sewers. These guidelines are well-accepted and well-understood. As such, they can also be applied as Key Performance Indicators (KPIs) to evaluate the performance of existing sewers by evaluating flow monitor data with respect to them. This webinar discusses several KPIs adapted from sewer design guidelines, shows how to use them to evaluate the performance of existing sewers, and illustrates actionable insights revealed from them.
SPEAKER: Kevin Enfinger, P.E.TIME: 1 hour
Elements to Successful Flow Monitoring: Series
While sewer flow monitoring is performed for a variety of reasons, there are some common elements to successful flow monitoring application. Elements to Successful Flow Monitoring will be presented and discussed in a two-part webinar series. Part 1 will focus on the principle of operation for sewer flow measurement and the pros and cons of different measurement technologies. Part 2 will focus on flow monitor site selection, installation, operation, and maintenance. Whether you work for a municipality, a consulting engineering firm, or a flow service provider, important principles and practical advice will be shared to maximize your monitoring programs.PART 1: Flow Monitor Sensor Technology | February 24, 2022
SPEAKER: Kevin Enfinger, P.E.
TIME: 1 hour
A wide variety of sensors are available today for sewer flow measurement. These sensors are classified according to their principle of operation and the technologies they use. The area-velocity method is the most common approach and relies on flow depth and velocity sensor measurements to calculate flow rate. Flow depth measurement options include ultrasonic and pressure technologies, while flow velocity measurement options include electromagnetic, ultrasonic, radar, and laser technologies. Some of these technologies are applied with submerged sensors, some are applied with non-contact sensors, and some apply a combination of the two. Strengths and weaknesses of each approach and each technology will be discussed, as well flow conditions best suited for them.
PART 2: Successful Deployment, Operation, and Maintenance | March 24, 2022
SPEAKER: Kevin Enfinger, P.E.Kevin Enfinger, P.E; Sharon Endress, PMP; and Cody Mahaffey
TIME: 1 hour
DESCRIPTION: Once the quantity of flow monitors has been determined and preliminary locations have been proposed to meet the needs of a given project, final locations are selected in the field to provide the best possible flow measurements. Siting guidelines that provide the most accurate results are discussed, as well as competing concerns such as site access, safety, and security.Once properly sited and installed, flow monitors cannot be forgotten and should be serviced periodically to ensure proper operation. Inadequate or insufficient operation and maintenance (O+M) can adversely affect the accuracy or availability of flow measurements. Common O+M problems associated with flow monitors often originate from environmental factors or equipment problems. Best management practices and practical advice are provided to support successful flow monitoring.