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These guidelines are provided as an overview of the Port Authority’s design standards. Design details and associated documents outlined in these documents will be provided to the success client. The Guidelines shall not replace professional design analyses nor are the Guidelines intended to limit innovative design where equal performance in value, safety, and maintenance economy can be demonstrated. The design team shall be responsible for producing designs that comply with the Guidelines in addition to all applicable codes, ordinances, statutes, rules, regulations, and laws. Any conflict between the Guidelines and an applicable code, ordinance, statute, rule, regulation, and/or law shall be addressed with the respective functional chief. The use and inclusion of the Guidelines, specifications, or example drawing details as part of the Contract Documents does not alleviate the design professional from their responsibilities or legal liability for any Contract Documents they create.
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Last Updated: 05/02/2019 Page i
Electrical – TOC
Electrical – TOC Last Updated: 05/02/2019 Page iv
Electrical - Overview Last Updated: 05/02/2019 Page 1
These guidelines are provided as an overview of the Port Authority’s design standards. Design details and associated documents outlined in these documents will be provided to the success client. The Guidelines shall not replace professional design analyses nor are the Guidelines intended to limit innovative design where equal performance in value, safety, and maintenance economy can be demonstrated. The design team shall be responsible for producing designs that comply with the Guidelines in addition to all applicable codes, ordinances, statutes, rules, regulations, and laws. Any conflict between the Guidelines and an applicable code, ordinance, statute, rule, regulation, and/or law shall be addressed with the respective functional chief. The use and inclusion of the Guidelines, specifications, or example drawing details as part of the Contract Documents does not alleviate the design professional from their responsibilities or legal liability for any Contract Documents they create. It is also recognized that the Guidelines are not universally applicable to every project. There may be instances where a guideline may not be appropriate. If the design professional believes that a deviation from the Guidelines is warranted, such a deviation shall be submitted in writing for approval to the respective functional chief. The Electrical Discipline prepares contract drawings, specifications, construction cost estimates, and construction staging plans for the installation and rehabilitation of power, lighting, fire alarm, communication, computer data, security, and various other electronic systems at the various Port Authority of New York & New Jersey facilities. During the design of these systems, the Electrical Discipline staff performs condition surveys and prepares master plans, conceptual designs, contract drawings, specifications, construction staging, cost estimates, etc. The design guidelines contained herein are provided as an aid and reference for the engineering and design services outlined above. Acronyms used throughout this guideline are defined in Appendix A.
Electrical - Technical & Code Standards/Regulations Last Updated: 05/02/2019 Page 2
Electrical - Design Criteria & Special Requirements Last Updated: 05/02/2019 Page 4
The PATH SCADA System Includes Normal and Back-Up control locations. Normal Control is from C Yard Control Center and Back-Up is from HOBAN Control Center (Journal Square), Indication and control is provided for The PATH Traction Power System and the 15 KV Emergency System. The following is Typical Equipment that is monitored and controlled: 38 KV AC Switchgear 15 KV AC Switchgear 480 Volt AC Switchgear 480/208 Volt AC Emergency Generators 800 VDC Switchgear 800 VDC Track Breakers 800 VDC Rectifiers Rectifier Transformers Auxiliary Transformers Automatic Transfer Switches 125 VDC Battery Systems and Rooms including CO monitors and Alarms Tunnel Smoke Purge Fans Substation Security (CCTV, Door Alarms, etc.), Substation Temperature and Fire Detection Station Ventilation Fans The Path SCADA System is designed in accordance with Contract Documents, including Standard PA Specifications, and Drawings, PATH requirements, New York City Electrical Code, NEC and all codes and standards as listed in the Standard PA Specifications.
In order to maintain and expedite vehicular traffic through the tubes of Port Authority of New York & New Jersey tunnels, a reliable and interrupted source of electrical power shall be available at all times. Two utility companies are employed for supplying the power required for the tunnels’ operation: The Consolidated Edison Co. (Con Ed), which supplies power to the tunnels on the New York side of the Hudson River and the Public Service Electric and Gas Co. (PSE&G), which supplies power to the tunnels on the New Jersey side of the river. Each of the above utilities is providing the required power through three 15kV feeders; therefore, there are six incoming 15kV feeders at each of the tunnels. This configuration allows for design and construction work to consider shutting down one or even more feeders at a time. It should be noted that under extreme emergency condition, tunnel emergency and essential equipment may be operated from only one 15kV feeder from either utility company. However, this type of emergency operation is not allowed to be considered as a design criterion when preparing any design documents. A minimum of three operational 15kV feeders shall be available at any time to avoid operating the tunnel at reduced capacity. Tunnel power distribution systems, as well as miscellaneous electrical equipment, shall be remotely controlled at any time by a centralized system called Supervisory Control and Data Acquisition (SCADA). This system shall maintain the capability of providing status and control of the following but not limited to:
Electrical - Design Criteria & Special Requirements Last Updated: 05/02/2019 Page 5 15kV, 480V, and 208V switchgear Ventilation fans Tunnel lighting Pumps (sump, booster, vacuum pumps) DC control system Carbon monoxide (CO) monitors and alarms Security equipment (closed circuit TV [CCTV], door alarms, etc.) Fire standpipe Smoke detection alarms Emergency panel transfer switches For lighting requirements in the tunnels refer to Lighting Systems. No polyvinyl chloride (PVC)-coated conduits are allowed to be installed in tunnels. Cables and wires (further called “cables”) to be installed in the tunnels should comply with the following requirements: No PVC-insulated cables are allowed to be installed in tunnels except for communication systems, remote control, and signaling and power-limited circuits. Cables shall have a thermoset, low smoke, zero halogen, cross-linked polyolefin insulation. Cables shall pass the flame propagatory test VW-1, be Underwriters Laboratories, Inc. (UL) listed as XHHW-2 rated 90 degrees for both wet and dry applications. Full requirements for these cables are indicated on PA Standard Specification 16120. 3.1.2.2 BRIDGES Electrical design shall consider the following: All conduits to be supported in an applicable manner in orientation and loads according to manufacturer specifications and recommendations. All conduits vertically mounted using Unistrut, Kindorf, or similar supports shall be installed in such a way to prevent any conduit slippage due to excessive vibrations, either utilizing a cantilever bracket, a two-hole strap, or stop-nuts. Beam clamps shall not be used to support conduit mounted in a vertical fashion. All conduit support shop drawings shall be approved by the engineer prior to construction. Expansion/deflection fittings have to be installed not only on long conduit runs but also wherever conduits pass through structural joints. 3.1.2.3 TERMINALS 3.1.2.3.1 Retail Services The retail services shall be independent from the Port Authority of New York & New Jersey systems.
Electrical - Design Criteria & Special Requirements Last Updated: 05/02/2019 Page 7 3.1.2.3.6 Occupancy Sensors Occupancy sensors shall be used whenever possible in conference rooms, bathrooms , and single- occupancy offices or rooms. 3.1.2.3.7 Multilevel Switching Multilevel switching shall be used on all fluorescent lighting consisting of three or more lamps. 3.1.2.3.8 Day Lighting Spaces with large amounts of exterior glass or skylights shall utilize photocell control of electric lighting.
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A. Runway Lights: For operations under Category I configuration, runway centerline, elevated edge lights, and runway end identification lights shall be provided. Touchdown zone lights shall be additionally installed for all Category II and III configurations. The items listed below should be confirmed with the facility at the start of every project.
Electrical - Design Criteria & Special Requirements Last Updated: 05/02/2019 Page 8 B. Taxiway Lights:
Electrical - Design Criteria & Special Requirements Last Updated: 05/02/2019 Page 10
Electrical - Design Criteria & Special Requirements Last Updated: 05/02/2019 Page 11 computers working in conjunction with the constant current regulators housed inside different lighting vaults. B. For the sake of monitoring functioning of all lights, similar industrial-grade computers with flat panel touch screen graphical displays of all taxiways and runways lights shall be provided inside standard cabinets inside all lighting vaults for ease of maintenance purpose. 3.1.4.7 EMERGENCY DIESEL GENERATORS A. Non-FAA emergency diesel generator sets shall be three-phase, low-voltage type located near the lighting vaults for back-up power to all regulators and shall be rated for supplying all series circuit lights supplied from the particular lighting vault in the airport. For smooth airport operations, black start of the emergency set shall be as per FAA guidance. B. The emergency generator set along with load bank and all accessories shall be housed inside a prefabricated weatherproof steel building painted in checkerboard fashion with FAA-approved aviation orange and white paints and shall be complete with all light and ventilation requirements. 3.1.4.8 FAA LIGHT LUMINAIRES AND FAA SUBSTATIONS A. All FAA light luminaires required for navigation/al aid (NAVAID) and visual aid (VISAID) under Category I, II, or III mode of airport operations shall be properly coordinated with Port Authority of New York & New Jersey lights located on runways and shall be supplied through a separate set of FAA cables and ductbank and kerf cut conduit network. B. One FAA substation per each runway end shall be suitably located beyond the safety area inside a prefabricated steel building suitably checkerboard painted for visibility. The high- voltage step-down transformers and switchgear cubicles feeding the substation shall be located outdoors but close to the FAA substation. 3.1.4.9 SWITCHHOUSE STRUCTURES AND EQUIPMENT A. All switchhouses shall be located inside airport airside operation areas close to runways and taxiways for ease of series lighting circuit distribution through ductbanks. Switchhouse structures shall be as per latest Leadership in Energy and Environmental Design (LEED) requirements and located above the 100-year worst flood water level. B. Each switchhouse shall be complete with adequate lights, ventilation fans, radiant space heaters, security cameras, and fire alarm system. The layout of equipment inside shall ensure proper segregation of all high-voltage power equipment away from computerized control and monitoring systems. 3.1.4.10 FAA CONTROL TOWER INTEGRATION All aviation light computerized control and monitoring systems through fiber optic cable networks shall be from FAA operators located inside the control tower. Location of all liquid crystal display (LCD) flat-panel graphical touch screens for remote light control and monitoring shall be properly coordinated with the FAA control panel layout inside the tower. Reference Design Documents:
Electrical - Design Criteria & Special Requirements Last Updated: 05/02/2019 Page 13 H. For indoor and outdoor installations, transformers shall be dry type cast coil construction (primary and secondary). I. Drawings shall include a complete one-line diagram showing all primary connections, protective devises, relay protection, switching and interlocks; power sources, routing and feeder designations; size and type of feeder and conduit; KVA rating; types and voltages of all transformers; and all load data in justification of the amount of power requested (load letter). Power riser diagram can be provided in addition to One Line Diagram, but not in lieu of. Key interlock schematic & procedure for service substation(s) shall be included. The load letter shall be prepared and submitted to the Port Authority of New York & New Jersey in a format similar to utility company letters and shall provide a breakdown of major types of loads, shall indicate the largest motor load, total anticipated demand, any assumptions for watts/square foot, etc. J. Shop drawing and catalog cuts for the medium voltage switchgear, transformers, cables, splices, and terminations shall be submitted for approval. K. Port Authority of New York & New Jersey specifications for the medium voltage installation shall be used. L. A short-circuit current calculation, coordination study and arc flash analysis, for the proposed power system shall be submitted for review. M. Each incoming service shall be provided with required Port Authority of New York & New Jersey-approved metering current transformers (CTs) and potential transformers (PTs). The CTs and PTs shall be connected to the primary side of the incoming feeders. N. Dual-power sources with automatic transfer from both incoming feeders’ metering PTs shall be provided for a totalizer, if provided. O. Provide a fire-treated plywood backer board for mounting the required meter pans and other metering devices including conduits, fittings, and wires for the installation of Port Authority of New York & New Jersey meters and totalizer. Metering equipment to be installed outdoors shall have a National Electrical Manufacturers Association (NEMA) Type 4X stainless steel enclosure. Meters and totalizer will be provided by the Port Authority of New York & New Jersey and shall be installed by the tenant. P. Underground conduits to be used for the medium-voltage power distribution system shall be concrete encased fiberglass reinforced epoxy (FRE). Minimum conduit size shall be 5 inch. Refer to Chapter 3.2.2 for ductbank separation and Chapter 4.3.8 for spare conduit requirements. Q. Between manholes in the medium-voltage power system, the total bending radius for underground duct banks shall not exceed 90 degrees and shall utilize wide sweeps. R. Calculations of maximum pulling tension for all medium-voltage cable to be installed into the underground duct banks shall be submitted for review. S. All manholes shall be designed as per Appendix B - Port Authority (PA) Electrical Standard Details. Size of manhole shall be determined based on the number and size of cables, wires, and conduits allowed. For areas where a PA-standard manhole is not appropriate, submit a proposed manhole design including all dimensions and design calculations for review. T. Medium voltage power systems at EWR are provided and distributed by PSE&G. From PSE&G, the Port Authority primarily receives and distributes low voltage systems. In
Electrical - Design Criteria & Special Requirements Last Updated: 05/02/2019 Page 14 instances where the Port Authority distributes medium voltage power systems at EWR, the design shall conform to the standards and guidelines set forth above.
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The primary goals of the corrosion control program are to develop and maintain dependable and long-lived structures, equipment and systems; conserve energy; reduce costs due to corrosion; and ensure compliance with the New York State Department of Environmental Conservation (NYSDEC), the New Jersey Department of Environmental Protection (NJDEP), and other applicable regulations and guidance. The design of the systems shall take into account the presence of stray currents and their impact on existing and proposed structures, and the impact of connecting structures into existing cathodically protected structures. All tenant hydrant fueling systems shall be electrically isolated from the Port Authority of New York & New Jersey fueling mains. The design shall take into account the monitoring requirements for compliance with the respective state agencies and federal regulations for corrosion control. Provisions shall be made to allow the effectiveness of all installed dielectric isolation devices (flange isolation kits, etc.) to be tested periodically without the need for confined space entry into vaults, etc. In New York, all cathodic protection systems shall be registered with the "Greater New York Corrosion Committee" and in New Jersey, all cathodic protection systems shall be registered with the "New Jersey Committee on Corrosion.” 3.1.6.1 CATHODIC PROTECTION Corrosion protection shall be implemented for the structures listed under Cathodic Protection and Corrosion Protection to meet life cycle cost/reliability requirements of the respective discipline. Structures that are required by regulation to be cathodically protected are: Airport fueling lines. Underground fuel storage tanks and associated piping. Aboveground fuel storage tanks and associated piping. Underground liquefied propane storage tanks and associated piping. If applicable, the cathodic protection systems shall be compatible with the existing systems at the Port Authority of New York & New Jersey facility. 3.1.6.2 CORROSION PROTECTION A related goal is to maximize public safety by prevention of failures of critical structures due to corrosion. Structures that are to be considered for corrosion protection include: High pressure water mains, particularly firewater mains. Firewater storage tanks. Pier support structures (pipe piles, caissons, sheet piling). Steel reinforcement in concrete structures.