Item 17 - Arc Flash Analysis and Safety Program Development

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o The curves will be in different colors for the ease of identifying. The devices' labels along with their settings will be organized in a way that devices are easy to distinguish and follow in an orderly fashion from upstream to downstream. o Fault clipping currents will be displayed in the TCC for each individual bus identifying the max level of fault current that each device can clear. o Each piece of one -line associated with the TCC will be neatly placed next to the TCC for ease of identifying and associating the curves with the devices. o Each TCC will be induvial studied for possible m is-coord i nation or selectivity problems and any recommended adjustment for each TCC will be presented in a separate TCC with the same TCC identifier with the "RECOMMENDED" revision so the client can easily compare the recommended changes. o A list of all the created TCCs will be included in the report with their TCC identifier tag so the client can easily find the TCCs per their page number in the report. o Not all the devices and their settings can be adjusted to achieve desired coordination and/or selectivity therefore additional recommendations may be provided such as replacing the equipment, upgrading the trip devices or rating plugs, etc. o The format of the TCCs can be consulted with the City of Santa Ana and accommodated as desired in advance. o Each TCC will demonstrate the phase settings of the devices following to the next TCC with the ground settings (if applicable) and also following a TCC with the recommended settings (if applicable). Existing and recommended settings of all the devices (adjustable) will be presented in a tabular format following the TCC section in the report in separate tables for low and medium voltage equipment. If there are other types of devices such as vacuum interrupters, differential relays, etc. those will be presented in separate tables. This format can be adjusted as desired per City of Santa Ana requirements in advance. All the findings, recommendations and solutions will be presented in the executive summary section of the report. 4.4.Arc Flash Study As arc flash objectives was mentioned in section 1.1, the following demonstrates the practical approach and steps to the arc flash study per the following: o All the guidelines required by the latest IEEE-1584 and NFPA-70E will be followed in order to calculate the incident energies for each individual equipment included in the models. o As required by IEEE-1584 2018 the enclosure dimensions (width, depth and height) will be measured during the data collection (or obtained from the shop drawings/submittals) to accurately calculate the incident energies per