Suburban Water Systems GIS Application -...

transcript

Suburban Water Systems GIS Application

June 29th, 2016

Satish SadanandamJorge Lopez, P.E.

Suburban Water Systems - GIS Application

•Company Background:

- Suburban Water Systems, a part of Southwest Water Company, is an investor-owned water utility.

- Suburban Water is regulated by the California Public Utilities Commission.

- Approximately 42-square mile service area.

- Covers all or portions of Glendora, Covina, West Covina, La Puente, Hacienda Heights, City of Industry, Whittier, La Mirada, La Habra, Buena Park and Unincorporated portions of California’s Los Angeles and Orange counties.

SS1 Satish Sadanandam, 5/23/2016

•Company Background:

- Population of about 300,000 through a water distribution system that includes 18 wells, 32 reservoirs and more than 850 miles of pipelines, 75,000 service connections and 20,000 valves

- The water is supplemented with water purchased mainly from member agencies of the Metropolitan Water District of Southern California (MWD).

•Purpose & Goal:

- We want to share our experience how GIS have evolved within our organization and helped our customers. (other departments)

- Our goal was to make GIS user friendly application (not just maps) but also allow end users to use / analyze the data. In this presentation we will show how we reached that target.

•History:

- Atlas Maps (24” x 36”) were used for map reference.

- In 1998, GIS data was created in Microstation format.

- Only Atlas Maps were used to capture GIS data. None of the as-builts were used as reference.

- Minimal attributes were coded (Size, Material, District, Valve & hydrant numbers)

- Attributes were stored in external access database

- In Micro station, all the features (lines, points, polygons) were coded with unique id ‘MSLINK’ and the same ‘MSLINK’ will be coded in external access database.

•Publisher:

- GIS map was published using Intergraph Geomedia

- In 2006, we purchased GIS web based viewer developed by Bentley Water Systems and it’s based on CAD software / Micro station.

- GIS Viewer had only limited tools.

- Purchased only 10 licenses who can access the application.

- Used by Engineering & Construction departments. No other members of the company benefited with the GIS application.

- Hydraulic model was created in 2010 using WaterGEMS

•ESRI Migration:

- In 2012, GIS team worked on 3 year Master plan and planned some of key projects

PHASE 01

PHASE 02

PHASE 03

•ESRI Migration:

- Purchase ArcGIS Desktop & ArcGIS Server

- Purchased Data Reviewer

- As-built-Scanning and linking

- Create As-built database-

Purchase LA County & Assessor roll data

- Data Migration (Micro station to ESRI File geodatabase)

PHASE 01

- Adding hydrant valves & assigning numbers

- Annotation placement

- FME Workbench

•Implementation:

- Purchased Los Angeles County parcels & tax roll data.(less than $500.00)

- Approximately 8000 plans (Work order & Drawing Numbers) been scanned

- Created “Asbuilt_Database” to input the scanned information.

- Data Migration:

- Downloaded Local Government model from ESRI and used that as database.

- Extract data from Micro station / access database to File geodatabase using FME – Workbench software.

Geometric Network

Feature-linked annotations

•Implementation:

- Linked all the as-builts to GIS data (Mains, Valves, Hydrants etc.)

- Added Hydrant valves & assigned numbers.

- Annotation placement. (Feature linked annotations for Diameter, Material, Install date, Work Order number etc.)

•ESRI Migration:

- Add Service lines and Meters

- GPS Valves & Hydrants

- Web application

- Custom tools

PHASE 02

•Implementation:

- Purchased 2 - GPS Units (Trimble GeoXH 6000 series) to collect valves & hydrants locations. (1239 Hydrants & 3772 Valves GPS’ed)

- Web Application: Started with ArcGIS Viewer for Silverlight 3.1 and transitioned to JavaScript API.

- Data hosted in Houston server virtual machine (Windows Server 2008 R2 datacenter, SQL Server 2008 & IIS Manager)

- Created custom tools such as reporting, valve isolation, Asbuiltsto an extent and integrated Google street view.

Suburban Water Systems - GIS ApplicationAs-builts

RedliningW/Email

Valve Isolation

Reports /Dashboard

User/Role

Google StreetView

•ESRI Migration:

- Purchased Asset Management program (Info Master)

- Breaks

- Add PRV points in GIS

- Fire Flow form

PHASE 03

•Asset Management:

- Our largest asset class is water lines. Over 60% of our water lines were installed between 1950 and 1970. This indicates that the age of pipelines are between 46 to 66 years.

- According to American Society of Civil Engineering (ASCE), the useful life of drinking water components for the distribution system is 60-95 years.

- Therefore, most of SWS’s water lines are reaching the end of their useful life, and approaching the age at which they need to be replaced.

- In pipe condition analysis, many variables to be considered such as age, quantity of breaks, material, soil condition, corrosion protection, pipe depth, pipe pressure etc.

•Asset Management:

- Condition analysis for Wells, Reservoirs, Valves (System & Control valves) to be considered.

- Purchased InfoMaster, an extension to ArcMap Desktop to run our analysis.

- Using the new program, we started to analyze our water mains.

•Breaks:

- We have extracted breaks (Main breaks, Valve breaks, Hydrant breaks & Service breaks) from old data and imported to GIS database.

- Snapped all the Main breaks, Valve breaks, Hydrant breaks to the closest feature.

•Pressure Reducing Valve (PRV):

- We have a total of 300 PRV’s approximately in our system. We captured only 176 PRV’s in GIS data because some of the PRV’s are within our plant stations.

- For the 176 PRV’s we collected the information such as Primary function & settings (psi), Secondary function & settings (psi), HGL (upper and lower), operation sequence, Pressure zone etc.

- Added ‘Normally Closed’ valves next to PRV locations.

- Adding this in GIS data & viewer, Mechanics team will benefit

- We are also in the process of updating our Plant drawings.

•Fire Flow form:

- Fire flow tests are conducted on hydrants to determine the water availability in planning for firefighting activities and system performance.

- During fire flow test, Inspectors collect static, residual and pitotvalues.

- Input all the values in a pre-defined form.

- Data is stored in SQL Server and also sends a report via email to Water service planner.

- Benefit of the form is to avoid duplicate work and save time, generate report and database are stored in centralized server.

•Street View:• We integrated google street view with our GIS viewer.

•WACHS Valve Exercise

- WACHS Valve Exercise: Currently our construction team is doing valve exercise using E.H WACHS machine. They collect the data using handheld unit and transfer the data manually. So far we have exercised 4292 valves.

•Overall Benefits & ROI:

•Time saving.

• Referring as-builts (Leak crew / USA Dig Alert / Engineers)• Assist in valve isolation.• Avoid duplicate work.

•Data maintenance, accuracy & storage.

•Data accessible from anywhere within our premise.

•Using latest ESRI apps (basemaps)

•Parcels & Assessor roll data. (County data)

•Moving Forward:

- Mobile application

- WACHS – GIS Integration

- USA Dig Alert application

- Leak data & Reporting

- Water Quality flushing data & report

- Service line – clean up

- SAP – GIS integration

- Questions?

Suburban Water Systems GIS Application -...

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