specifications - FAACO - Federal Aviation Administration Contract ...

.FTWIC-2235June 2009study. Do not submit protective devices until the short circuit calculations and protectivecoordination study has been approved by the FAA.G. Prior to construction, submit Shop Drawings of all equipment rooms. Show actualequipment to be installed, with drawings fully detailed to show clearances, headroom,hangers, conduit and other pertinent information including all equipment of other trades.Prepare Drawings to a scale of at least 1/2-inch per foot.H. Maintain "As Built" drawings to be included in the O&M manuals. (Refer to Section01730 MAINTENANCE MANUALS AND INSTRUCTIONAL MANUALS). Maintainsets of "Blueline Prints" per Division 1 of this specification and indicate changes anddiagrams of those portions of work in which actual construction is significantly atvariance with the Contract Drawings. Mark the Drawings with a colored pencil. Prepare,as the work progresses and upon completion of work, drawings clearly indicatinglocations of all devices, conduits, equipment and other pertinent items, as installed.Include invert elevation or buried depth of ducts and direct buried cables. Uponcompletion of the project, submit all materials to the Contracting Officer, after verifyingall the above data is shown correctly.I. The Contractor shall submit a short circuit and protective device coordination study. Thestudy shall include the main switchgear, distribution panelboards, and all downstreamdevices to be installed. In addition, the system shall be coordinated with the primarydevices in the utility transformer that provides power to the facility. The protectivedevice Coordination Study shall be prepared as follows:1. Provide a complete coordination study based on the current available at theprimary terminals of the Utility Company transformer.2. Provide coordination plots for each group of protective devices. The coordinationplots provided shall graphically indicate the coordination proposed for the systemcentered on full scale log forms.3. The coordination plots shall define the types of protective devices selected,together with the proposed coil taps, time dial settings, and pick-up settingsrequired.4. The coordination plots shall include complete titles, representative one-linediagrams and legends, associated utility system characteristics, completeparameters for transformers, complete operating bands for distributionpanelboards or panelboards circuit breaker trip devices, fuses, etc.5. The long time region of the coordination plots shall designate the pick-upsrequired for the circuit breakers.6. The short time region shall indicate the magnetizing inrush, and ASA withstandtransformer parameter, the circuit breaker, short time and instantaneous tripdevices, fuse manufacturing tolerance bands, significant symmetrical faultcurrents, etc.16010-3