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H259-- ELECTRICAL 5-YEAR ARC FLASH STUDY (VA-27-00002938)

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Description

Arc Flash Hazard Analyses Scope of Work General Contractor shall conduct an Arc Flash Hazard Analyses in accordance with National Fire Protection Association (NFPA) 70E, Standard for Electrical Safety in the Workplace, NFPA 70, National Electric Code and Institute of Electrical and Electronics Engineers (IEEE) Guide for the Specification of Scope and Deliverable Requirements for an Arc-Flash Hazard Calculation Study in Accordance with IEEE Std 1584. The study will conform to the editions for the above-referenced standards in effect as of the date of the solicitation. The study shall include all significant locations in the electrical distribution system (switchboards, switchgear, motor control centers, panelboards, busways, etc.) from the incoming utility equipment or cabling down to 208V systems. Data collection and documentation shall include the 208V system. The study shall be performed using software programs specifically designed to standards governing short-circuit; protective coordination and arc flash hazard calculations. Final submittals shall include a formal reporting of findings, collect data and study calculations in a comprehensive report. Arc Flash Hazard Analyses Requirements The Arc Flash Hazard Analyses will consist of the following phases or requirements: Data Gathering and Field Verification Contractor shall: Field-verify and mark up existing single line drawings needed to perform an accurate study. In the event single-line drawings are not available, Contractor shall develop single-line drawings to reflect the as built configuration of the facility electrical system. Gather and document necessary system data required to complete the study. Data should include but is not limited to (as applicable): Location (building, room, etc.) Equipment Identification Equipment Information Manufacturer, Model, Catalog Number and Type Equipment Rating (Voltage, Ampacity, Interrupting Rating, etc.) Configuration (Main Lug, Main breaker, Number of breakers, etc.) Overcurrent Protection Relaying Type, Manufacturer, Function(s), CT and PT ratios, etc. Fuses Type, Manufacturer, Rating, etc. Existing Settings Cable Type, Size and Length (lengths are to be field confirmed) Cable Busway Type, Manufacturer, Rating and Length Motor Load and Contactor Data (record data and application for motors 25 HP and above) Contractor must coordinate with facility engineering staff to obtain necessary power company data such as minimum and maximum fault currents as well as X/R ratios. Correspondence documenting utility data shall be included in the final submittal. Data collection requires the removal and/or opening of equipment to field verify data. Data collection requires observing each piece of equipment covered by this study. Contractor shall record and report any deficiencies, such as missing identifying labels, warning labels, non-functioning latches or locks, missing hardware (covers, screws, breaker blank fillers, etc.), etc. Short Circuit Study Contracto…