Item 17 - Arc Flash Analysis and Safety Program Development

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CITY OF SANTA ANA RFP NO.: 22-023 ARC FLASH ANAYLSIS AND ELECTRICAL SAFETY PROGRAM DEVELOPMENT short circuit and coordination studied. In addition, the Contractor shall perform the arc flash analyses under the worst case arc flash conditions and all modes of operation. All necessary information shall be gathered and all electrical systems shall be analyzed from the utility connection point to the equipment connection points. The Contractor's field technicians and service engineers shall perform all work in accordance with the latest National Fire Protection Agency (NFPA) 70E and Institute of Electrical and Electronics Engineers (IEEE) Standard 1584 guidelines. The Contractor shall provide but is not limited to the following services for each facility: • Field collection of data on all existing facilities electrical equipment o Assume that any drawings or documentation that exists may or may not aid in the collection or analysis • Verify all one line diagrams, if available. If not available, the Contractor shall generate the appropriate detailed and accurate one line diagrams. o All discrepancies found in existing one line diagrams shall be brought to the City's attention as a drawing markup • One line diagram information shall include: o Electrical structures o Voltages at each point o Short circuit available at each point o Horsepower ratings of each motor a City of Santa Ana's standard names of all panels and equipment 2. ARC FLASH ANALYSIS The Contractor shall provide an in-depth power systems short circuit, coordination study and arch flash analysis of the City's facilities. The assessment shall include but are not limited to the following: 1. Short circuit study to determine the levels of current that flow in the electrical system under fault conditions. 2. Protective device coordination and interrupt rating studies to determine proper settings of protective devices. The short circuit study and the coordination study shall precede the arch flash analysis. 3. The Contractor shall determine the level of incident energy at each switchboard, motor control center (MCC), panel board, remote terminal unites (RTU), variable frequency drive (VFD) panels and other electrical equipment requiring analysis. Current NFPA and IEEE standards shall be utilized to yield arc -flash hazard results which comply with the latest industry standards. a. Arch flash assessments shall include each operating mode for the power system to ensure correct incident energies are calculated for all system conditions. 4, The Contractor shall determine if the motor control buckets can be hot swapped and indicate as such on the MCC arc flash 70E labels or specify on the general use City of Santa Ana RFP 22-023 Arc Flash Analysis and Electrical Safety Program Development Page 15