Repair CIF Ventilation System, B983, PSNS
Controlled Industrial Facility (CIF) Building 983 demolition of existing structures on the roof including asbestos and hazardous metals remediation. Installation of a new HVAC system including Stainless Steel ductwork and new air handling units, chillers and exhaust fans. A new raised metal structure platform with a protected roof was installed to house all of the HVAC components with the exception of the chillers.
B460 Repair Large Slab Rolling Doors
This project restored operation of four 60-foot tall large slab rolling doors at the west end of Building 460 in the Controlled Industrial Area (CIA) of the Puget Sound Naval Shipyard. Restoring operation to the doors involved retrofitting/restoring the gearboxes; replacing motors, control equipment, and electrical wiring; and providing new enclosures and appurtenances. Audible and visual signaling systems, limit switches and interlocks were installed to facilitate the safe operation of the doors. Deteriorating door panels were restored and painted inside and out. Broken glass panes were replaced. Replacement of aesthetic features adhered to historical restoration requirements.
Restore Ventilation NHB B1, Phase II
Code-required modification and replacement of 7 air handling units (AHUs), 1 heating & ventilation (HV) unit, 19 fans, and 14 pumps on HVAC systems serving administrative areas, operating rooms, exam rooms, laboratories, and service areas. Extensive phasing, infection control, and outage coordination was required to maintain hospital operations.
Design-build replacement of an obsolete quartz halogen backlighting system with a new, energy-efficient LED system for the high-security Main Limited Area (MLA). Design work included engineering and photometrics. Provided new electrical infrastructure to support the four mile perimeter protection system. Phased construction to maintain perimeter protection throughout construction.
Dry Dock 4 - Repair Main Dewatering Pumps and Valves
Overhaul three main dewatering pumps and motors, as well as replacing check and discharge valves, and motor controllers which service Dry Dock 4. Repair/overhaul and restore pumps and motor, included tear down of each system, installing new bearings, impeller and rewind of the motors to achieve sustainable operating conditions allowing continued support of docking activities.
Replace Fire Alarm Systems B7000 & B7001 at NBK Bangor
Design-build fire alarm replacement of obsolete fire alarm systems in two industrial manufacturing facilities located in lower base (i.e., higher level security) at NBK Bangor. Designed and installed temporary fire alarm systems to enable disabling the existing systems in their entirety. Coordinated construction with various commands within each facility.
Replace 2300 Volt Substations
Provided upgraded electrical inftrastructure to replace three substations at the Puget Sound Naval Shipyard. Provided new transformers, underground electrical distribution, circuit breakers, feeder lines, commissioning of all new equipment items, and associated substation building improvements. Coordinated outages and cut-overs to and from temporary power to facilitate base operations.
Preparation for Installation of the Instrument Landing System
This design-build project provided preparatory work for the installation of a new Instrument Landing System (ILS). The ILS consists of an antenna system with primary components at two sites (i.e., Glideslope and Localizer) located at opposite ends of the runway. Work at the two sites consisted of removing and disposing of existing antenna equipment and equipment pads; site preparation for new equipment pads; installing underground conduits for power and communications cabling; installing grounding systems; constructing new equipment pads; and paving new access roads. 1,700 LF of underground fiber was installed. 500 LF of power ductbank and three transformers were installed. Airfield markings, signage and installation of new survey monuments for ILS calibrations were also part of the scope this contract.
Upgrade Tunnel D Electrical
Design-build electrical upgrade including installation of new explosion-proof (EP) primary power conduits; conductors; EP electrical panels; EP lighting fixtures and power conduits; and EP power receptacles. Design included photometric study to ensure illumination and uniformity criteria were satisfied. Provided temporary power service to maintain operation of critical fuel tank monitoring system during construction.
Electrical Distribution NHB
Upgrade and replacement of critical electrical infrastructure and life safety system elements including new ATS for existing diesel engine emergency generators; UPS system upgrade for phone and information management systems; electrical load redistribution; critical branch circuit installation; Motor Control Center replacement; PA system upgrade; and FA, exit signage, and emergency pathway lighting upgrades.