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RESOLUTION AUTHORIZING A SUPPLY AND SERVICE AGREEMENT WITH PRIMEX TO PROVIDE AND INSTALL FILTER PANEL PLC UPGRADES AT THE LAKEWOOD WATER TREATMENT PLANT FOR AN AMOUNT NOT TO EXCEED $73,200.00.
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CITY PROPOSAL:
RESOLVED, that the proper city officials authorize a supply and service agreement with Primex to provide and install filter panel PLC upgrades at the Lakewood Water Treatment Plant for an amount not to exceed $73,220.00, payable from fund 510-500-1905-5580 (water; Public Works and Utilities; capital (incl deprec/debt svc); capital equipment).
Statement of Purpose
STATEMENT OF PURPOSE: This resolution authorizes a supply and service agreement with Primex to provide and install the filter panel PLC upgrades at the Lakewood Water Treatment Plant in an amount not to exceed $73,220.00. This project was included in the 2024 CEP and is within the budgeted amount.
The filter panels at the Lakewood Water Plant are connected to the SCADA system which allows operators to monitor and operate the treatment process, backwash flows, levels, and make adjustments during the backwash.
The City has been utilizing the SCADA system and PCs since 2012. The current devices are scheduled to be replaced by 2026. The City is upgrading these five filter panels to PLCs to provide a more secure SCADA system. PCs are City issued personal computers, the City provides basic Lenovo devices. PLCs are Programmable Logic Controllers which are an industrial computer that have been ruggedized and adapted for the control of manufacturing processes, such as assembly lines, machines, robotic devices, or any activity that requires high reliability, ease of programming, and process fault diagnosis.
PLCs have a much longer lifespan than PCs, PLCs need to be replaced every 15-20 years, whereas PCs need to be replaced every 4 years. PLCs run on a proprietary software system that can only be accessed by having the manufacturer’s software. The City is planning to install a sixth filter panel which will also be a PLC. The City has a yearly service plan with Primex for work on the SCADA system, making this a sole-source purchase because of the proprietary nature of the software.