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Landslide Mitigation & Repair – Naval Base, Point Loma, CA

NAVAL BASE POINT LOMA, CALIFORNIA

Contract Value: $6,915,050.00

Category: Dry Utility

 

 

  • Project managed the design and build of the repairs to the existing underground electrical distribution systems affected by a landslide at Naval Base Point Loma. Circuit B1/C2 was installed overhead along Steamplant Road using engineered steel poles, supported by concrete piles measuring 10’ in diameter by 120’ deep with reinforcement cage. Circuit C14 contains a connection to the B3/B4 loop along Rosecrans Ave., which was demolished and intercepted within a manhole to a new 4-way pad-mounted switch.   Circuit B7/B8 was redirected from the manhole to the east side of Rosecrans Ave. within an above-ground heavy-duty fiberglass, bulletproof conduit to support all electrical distribution serving submarine maintenance operations. 
  • Additionally, the leaking 4-way switch at Pad 962 fed from Circuit C-14 was replaced with a new 4-way SF6 insulated pad mount switch.  All circuits affected were replaced with new medium voltage, shielded, EPR, 133% rated, 600V copper cabling.  New fiber optic cabling was installed between Substations B and C for network communication and monitoring.  The project experienced several challenges with the overhead pole and foundation design.  

Relevant Project Experience:

  • Design Bid Build, High and Medium Voltage Electrical Distribution,  Underground and Overhead Electrical Distribution, Heavy Duty, Bullet-Proof Fiberglass Conduit

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Replace Substations at Bldg 569 and Bldg 620 – MCRD San Diego, Ca

MARINE CORPS RECRUIT DEPOT, CALIFORNIA

Contract Value: $2,697,401.00

Category: Dry Utility

 

 

  • Project managed the design and build of the replacement of substation at Bldg 569 by removing the existing 12kV medium voltage secondary unit substation (TH-12-2A) at Bldg 569 electrical room. The existing secondary unit substation consists of 750 kVA transformer and switchboard with main circuit breaker and metering. New secondary unit substation at Bldg 569 inside the electrical room with same electrical distribution configuration consisting of a rated, 750kVA transformer with fused overcurrent protection device and 2500A switchboard was installed and interconnected with emergency generator power and photovoltaic system.
  • Project managed design and build of the replacement of substation at Bldg 620 by replacing and relocating existing 12 kV medium voltage electrical equipment at Bldg 619 and Bldg 620 pad location 300 feet East in the parking lot to a new centralized electrical equipment pad. The scope included a new fence with double gates and area lighting for concrete electrical equipment pad with spill containment, the removal of the existing 5-way oil sectionalizing switch, 3-way oil switch, 750kVA transformer with main circuit breaker on load-side of transformer, and Main Switchboard.  New 6-way sectionalizing switch, electrical equipment pad, 12kV medium voltage cable, 600V secondary cable, manholes, pull boxes, encased concrete duct bank, 750kVA transformer with main circuit breaker on secondary side, wireless smart meters, short block and/or test devices, instrument, accessories and Main Switchboard were installed. 

Relevant Project Experience:

  • Design Build, Medium Voltage Electrical Distribution,  Underground Electrical Distribution, Switchgear Installation, Concrete and Rebar Installation, and Mess Hall Logistics and Planning.

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Replace Transformers – NAS Pt. Mugu, CA

REPLACE TRANSFORMERS AT NAS PT. MUGU, CA

Naval Air Station Point Mugu, California

Contract Value: $1,920,489.44

Category: Dry Utility

 

 

  • Project managed the design and build of the replacement of thirteen (13) existing pad-mounted transformers and associated hardware and cables within the Ready Missile Test Area.  In addition, the scope included the removal of two (2) existing pad-mounted transformers and associated hardware and cables.  New pad-mounted, oil filled, 4160V-480/277V and 4160V-208/120V 3-phase transformers with primary switch and fuses were installed after the removal and demolition of the existing transformers and concrete pad.  New underground infrastructure and a concrete pad were installed to support the new pad-mounted transformer setup and configuration.  All transformer enclosures were coated, stainless steel construction per ANSI C57 for coastal environments.  New panelboards with ION 8650 electronic meters were installed in close proximity to the transformers. 
  • All necessary grounding with grounding wells were installed.  High voltage, EPR, 5kV rated copper wires/cables were installed between the electrical manhole and transformer with an inline splice for reconnection to the existing circuit.  Due to the mission criticality and operations, each new pad mounted transformer configuration must be completed within a seven (7) day period from initial outage to clear cap and isolate the primary service to final outage to re-energize the newly installed transformer and panelboard configuration.  Based on the performance requirements for each location, all thirteen (13) transformers were replaced within 75 days over the course of twelve (12) outages.

Relevant Project Experience:

  • Design Build, Medium Voltage Electrical Distribution,  Underground Electrical Distribution, Transformer and Panelboard Installation, Concrete and Rebar Installation, and Outage Logistics and Planning.

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Replace Transformer and Switch at PM7020 – Pt. Mugu

NAVAL AIR STATION POINT MUGU, CALIFORNIA

Contract Value: $618,000.00

Category: Dry Utility

 

 

  • Project managed the design and build of a new 1,000KVA FR3, oil filled, transformer and 1600A, 480/277V three-phase switchboard lineup with ION-8650 electronic meter and CAT-5 antenna.  New temporary generator connection board, with neutral disconnect links for testing purposes, was designed and installed to provide redundant and ease of connection means of reliable power to PM7020.  The work included intercepting a 16.5KV overhead line with fused cutouts and installing new 25kV rated EPR conductors through a series of manholes approximately 800 ft away from the service entrance including a 200 ft section of new underground utility infrastructure. 
  • The new transformer and switchboard were kept in environmentally-controlled and newly renovated rooms within PM7020.   All electrical equipment enclosures were painted stainless steel to prevent corrosion due to the close proximity to coastal waters.

Relevant Project Experience:

  • Design Build, Medium Voltage Electrical Distribution,  Underground and Overhead Electrical Distribution, Switchgear and Transformer Installation, Concrete and Rebar Installation, and Outage Logistics and Planning.

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