CCP 10-26-2010 - Laserfiche WebLink

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Page 3 of 3 Request for Authorization: Water System Controls Upgrade, Project 10-7 October 26, 2010 In addition, there are weaknesses in the current system that result from lack of redundancy of critical communications functions. As a result, the water supply control system is vulnerable and becoming increasingly obsolete and difficult to maintain. The proposed project would upgrade critical components of the control system (e.g. CPUs of programmable industrial controllers, software, communications hardware and connections) to use modern communications protocols. These upgrades will permit more flexible configuration of the hardware and software to allow redundant control points and eliminate current vulnerabilities. The project has been developed to upgrade rather than replace as much of the current equipment as is possible. For example, rather than completely replacing the programmable controllers (and therefore all of the associated input /output modules within them to which instrumentation is connected), the existing controller frames and input/output modules will be retained, and only the central processors and control software will be replaced. The proposed project should provide an additional 5 to 7 years of useful service life to the system, and significantly improve the ability of local service personnel to support the system and quickly restore operation should failures or problems occur. The changes will also provide future flexibility for modifications and replacements when necessary. Costs and Funding: The cost for the project will be paid from the Army 20 year operation and maintenance fund for that was established pursuant to the Litigation Settlement Agreement between the City and the Army. The City will bear no cost sharing for the proposed work. The fund balance is sufficient to complete the proposed project. Grant M. Wyffels, Director of Public Works