TETRA TECH, INC. 7 - 2014 - Laserfiche WebLink

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Mr. Rudolfo Rosas August 25, 2014 Page 4 a. Design Phase Activities 1. PLC Panel Design: Enterprise Automation will develop the basis of a new City standard for a PLC panel design for incorporation into the San Lorenzo Lift Station contract documents for subsequent fabrication by the contractor. The design will be comprised of the general back panel arrangement and enclosure standards. The design will be developed via a four step process: development of design options; conduct a panel design workshop; finalize the panel standard incorporating the City preferences; and provide the design for inclusion within the plans and specifications. The goal is to provide the contractor with sufficient design information to fabricate the panel to the standards required by the City. As an additional quality control measure, Enterprise Automation will develop a panel FAT framework for incorporating into the plans and specifications, with the goal being to provide the contractor with sufficient information on the requirements of the panel FAT that will be witnessed by Enterprise Automation. 2. Control Strategies: Enterprise Automation will guide a six (6) hour workshop at the City's facility to review the lists of equipment and 1/0 and determine how the City wishes to operate the facility from a controls perspective. Following the workshop, Enterprise Automation will develop control descriptions for the operation of the lift station. The control descriptions will describe the following: major controlled equipment; PLC connected instrumentation; automation strategies; SCADA alarms; interface with Dynac SCADA System; and Magelis display layout. Enterprise will develop test documentation for inclusion with the specifications that will be used by the contractor for the following: for internal testing prior to site deployment; during commissioning; and by Enterprise Automation and contractor and the City during site acceptance testing. The test documentation will cover PLC/SCADA related controls only. b. Construction Phase Activities 1. Panel Design: Enterprise Automation will review field instrument cut sheets submitted by the contractor to determine the VO requirements for the PLC panel, and will develop AutoCAD drawings which include: enclosure design; back panel layout; fabrication dimensions; power distribution; 1/0 termination detail; network layout and termination; wire numbering; symbol legend; construction notes and fabrication standards; panel and terminal labels; bill of materials, with component cross referencing bubbles; and design calculations for heat dissipation and wire duct fill. The completed panel design will be provided to the contractor for fabrication. Enterprise Automation will witness the panel FAT with the contractor. To enhance the probability that the PLC program is prepared properly for commissioning, Enterprise Automation will review the contractor's internal test results prior to the commencement of commissioning. Enterprise Automation will provide SAT documentation and assist the City with the formal SAT. Enterprise Automation will provide the City with the following as -built documentation following the completion of the commissioning: scanned SAT documentation; control descriptions; and panel drawings.