26 05 73 POWER STUDIES.pdf

This is a technical specification document (Section 26 05 73) for Power System Studies at Tinker Air Force Base. The specification establishes requirements for contractors to perform comprehensive electrical system analysis and documentation to ensure safe and reliable operation of facility power systems.

The contractor must furnish short-circuit, protective device coordination, and arc flash hazard analysis studies reflecting as-built conditions, utilizing EasyPower software and Tinker Air Force Base Electrical Standards (January 2024). Key deliverables include field examination plans, arc flash label formats, test reports, system analyzer certificates, model files, load flow studies, fault current studies, system coordination studies, and arc flash hazard studies—all requiring government approval with "G" or "S" classifications. The System Analyzer must be a registered professional electrical engineer with minimum three years of power system studies experience. The specification mandates compliance with IEEE standards (1584, 1584.1, 3002.2, 3002.3, C2), NFPA standards (70E, 70B), and UFC 3-560-01. Studies must encompass the switchboard's main protective device to all new downstream equipment, include single-line diagrams with accurate device identification, load flow analysis per IEEE 3002.2, fault current calculations per IEEE 3002.3, system coordination demonstrations, and arc flash studies per IEEE 1584.1 with recommendations to reduce hazards exceeding 8 cal/cm² to 4 cal/cm². Arc flash warning labels must be thermal transfer type, 3.5" x 5" to 4" x 6", machine-printed without field markings, and remain legible for five years, with placement scheduled five business days before installation.