FROM: James D. Herberg, General Manager
Originator: Kathy Millea, Director of Engineering
SUBJECT:
title
PROCESS CONTROL SYSTEMS UPGRADES, PROJECT NO. J-120
end
GENERAL MANAGER'S RECOMMENDATION
recommendation
RECOMMENDATION:
A. Approve Task Order No. 1 under the Master Services Agreement with ABB Inc. to provide services, software, and equipment for Process Control Systems Upgrades, Project No. J-120, for an amount not to exceed $11,818,480; and
B. Approve a contingency of $1,181,848 (10%).
body
BACKGROUND
The Supervisory Control and Data Acquisition (SCADA) system provides essential process monitoring, control, and archiving of process data, which is required for regulatory compliance. This system provides automatic control and allows operators to interactively monitor and control the process 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. There are only a few people outside of the Orange County Sanitation District (OC San) who can make software changes to support the current and future needs of OC San. This system will become increasingly difficult to service and maintain with time.
Process Control Systems Upgrades Study, Project No. SP-196, determined the requirements for the new SCADA system, developed a scope of work to replace the existing HMI, and performed a multi-phase procurement to evaluate and select a vendor platform to replace the existing SCADA system. Approval of a Master Services Agreement with the selected vendor, ABB Inc., is scheduled t...
Click here for full text