FROM: James D. Herberg, General Manager
Originator: Kathy Millea, Director of Engineering
SUBJECT:
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PROCESS CONTROL SYSTEMS UPGRADES STUDY, PROJECT NO. SP-196
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GENERAL MANAGER'S RECOMMENDATION
recommendation
RECOMMENDATION: Recommend to the Board of Directors to:
A. Approve a Master Services Agreement with ABB Inc. for the design, installation, implementation, and maintenance of a process control system;
B. Authorize staff to specify ABB Inc. as the sole source provider for equipment, materials, software, and services for control systems on current and future projects; and
C. Ratify the addition of ABB Inc. to the list of pre-approved Original Equipment Manufacturers for procurements under $100,000 for equipment, materials, software, and services for control systems.
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BACKGROUND
The Supervisory Control and Data Acquisition (SCADA) system provides essential process monitoring, control, and archiving of process data, including data required for regulatory compliance. The SCADA system provides automatic control and allows operators to interactively monitor and control the process, electrical and central generation facilities from centralized areas, assuring that the systems are performing properly and that alarm conditions can be monitored and responded to immediately.
The existing SCADA system utilizes programmable logic controllers (PLCs) and a Human-Machine-Interface (HMI) system consisting of networks, servers, workstations, software, and a data archiving system referred to as a historian.
The existing HMI software package is no longer supported by any vendor and requires emulation software to use Windows-based workstations. This system will become increasingly difficult to service and maintain with time because there are only a few people outside of the Orange County Sanitation District (OC San) who can manage that software to support the current and future needs of OC San.
Furthermore, the existing make a...
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