The project included (6) new 4,000A, 208V double ended switchgear lineups in B, C and D Terminals including integration with the airport-wide SCADA system.
Role:
S&H was the engineer of record from planning through project closeout, including all design, bid and construction support engineering services.
The project included (6) new 4,000A, 208V double ended switchgear lineups in B, C and D Terminals including integration with the airport-wide SCADA system.
Electrical Design Included:
- (6) 4000A, 208V switchgear lineups each with (2) 15kV 600A fused load interrupter switches, (2) 1000kVA vacuum impregnated epoxy transformers and 208V low-voltage draw-out breakers ranging from 4000A to 800A with main-tie-main setup.
- Construction phasing and sequencing design to allow for power outages to individual feeders only from 2 AM to 4 AM. Phasing design included temporary 15kV switches, temporary transformer, temporary 3000A switchboard and temporary generator, including all cabling.
- Redundant PLC switchgear controls with dual UPS backup with 8 hour ride-through capability for annual maintenance. PLC controlled the automatic transfer scheme of the switchgear.
- Remote touch screen with arc flash maintenance reduction switches to remove the operational personnel from the arc flash zone.
- Relaying including ANSI 27, 47 and 59 relays.
- ANSI 83 CPT auto-transfer scheme.
- Airport-wide SCADA integration, including new Ethernet switches with fiber backbone.
- New fire alarm systems, including integration with pre-action systems for sprinkler.
- New emergency lighting systems, including new high-efficiency lighting in each substation room.
- Security card access and door contacts for exterior doors with integration into the airport-wide system.
- New structured cabling systems for data network integration.
- Full short circuit, coordination and arc flash study from the MTS 15kV substation down to the S-Substations.
- Arc flash labeling for all panels in Terminals B, C and D.
Mechanical Design Included:
- Redundant HVAC split AC systems with minimal outside air.
- Exhaust systems.
- HVAC DDC integration with the airport-wide CM3 and Siemens systems.
- Existing relief air system integration, including motorized dampers and actuation.
Plumbing Design Included:
- Condensate removal systems for HVAC.
Architectural Design Included (via a subconsultant):
- Demolition and new walls for the substations.
- New exterior doors, including card access and security hardware.
- Patching of existing walls, floors and ceilings.
- Fire stopping and fire rated construction.