Colton Substation

Colton Substation

Colton Substation

Type: Substation
Scope: 
Demo existing and install new 138kV busswork and steel
Location: Austin, TX
Client: Lower Colorado River Authority

Irby Construction was the successful bidder on the Colton Substation project for LCRA. Upon award of the substation it was announced that LCRA needed the station constructed and turned back over to them 27 days earlier than originally scheduled. 

Irby was able to demo the 138kV side of the station, perform foundation installations with seven-day breaks on concrete and construct the substation up to the newly rated 3000A capacity. 

Irby completed the station work within the timeframes requested by LCRA incident free and was also able to deliver a quality substation product to LCRA. 

Start Date: July 2018 
Completion Date: September 2018 

 

If you would like to request information on this project or submit a request for bid, click here. 

 

Gillespie Substation

Gillespie Substation

Gillespie Substation 

Type: Substation
Scope: Replacement of six 138kV breakers
Location: Fredericksburg, TX
Client: Lower Colorado River Authority

Irby Construction was awarded the Gillespie Substation project in February of 2018. The scope included the replacement of six 138kV oil-filled circuit breakers with six new 145kV 3000A 40kAIC circuit breakers. This project also included replacing all the busswork and jumpers on the high side as well as installing new control cable, and junction boxes at each breaker stand. From there we were to wire the existing cable in the new junction box to the new breakers.

This project also consisted of testing 108 CT’s on all the new breakers and providing test reports to LCRA. Irby contracted out to Electrical Reliability Services, Inc., to perform testing and commissioning services. 

Throughout this project, Irby was able to display its craftsmanship specifically pertaining to aluminum busswork, bending and termination, as well as control cable installation and termination. 

Start Date: March 2018 
Completion Date: April 2018 

 

If you would like to request information on this project or submit a request for bid, click here. 

 

Lonestar Transmission Substation

Lonestar Transmission Substation

Lonestar Transmission Substation  

Type: Substation
Scope: 345kV Motor Operator Installation Project 
Location: Sweetwater, Albany, Hillsboro, & Corsicana, TX
Client: NextEra Lonestar Transmission

Irby Construction was awarded a series of upgrade projects from NextEra Lonestar Transmission to retrofit 120 MOABs on existing hand-operated 345kV switches. The project consisted of upgrading four major transmission stations with the maximum distance between them being 270 miles apart. The stations are: Novaro Switch Station, Sam Switch Station, West Shackelford Switch Station, and Claytonville Switch Station.

This project took daily, if not hourly, coordination/communication between Lonestar Transmission Construction Representatives and Irby’s onsite foreman to ensure outages were delivered to multiple stations in one day. Irby worked Monday through Saturday, eight hour days to accomplish the replacement and installation of motor operators per the stringent outage schedule. This project had Irby on its toes at all times due to all the transportation between the stations to perform the swap outs during the outages.  

Irby performed the construction to Lonestar’s strict standards of craftsmanship and safety without incident. 

Start Date: July 2018
Completion Date: January 2018

 

If you would like to request information on this project or submit a request for bid, click here. 

 

Canyon Substation Flood Remediation

Canyon Substation Flood Remediation

Canyon Substation Flood Remediation 

Type: Substation
Scope: Installation of new control house, replace three 138kV breakers, and rewiring
Location: San Marcos, TX
Client: Lower Colorado River Authority

Irby Construction was the successful bidder on the Canyon Substation Flood Remediation project for LCRA. This project included heavy coordination with LCRA as well as three Irby subcontractors within a tight construction schedule.

Irby was given a control house pad by LCRA to deliver foundation installations. Irby’s subcontractor East & Westbrook constructed all the foundations on this project within the timeframe needed. Irby then subcontracted to Southwest Erectors to build the control building. Once complete, Irby built out the control house’s internal components. Irby was on time and ready for LCRA’s outages to remove and relocate 11 panels from the existing control house to the newly constructed control house, as well as install three new panels. This included a custom welded section of exterior cable tray by Irby’s on staff certified aluminum welders. Irby also had all the control cable pulled and terminated prior to LCRA’s testing and commissioning staff.

One of the larger complex issues on this project was the installation of the Microwave Tower. This took several meetings between Irby and TNT Crane and Rigging. Due to the proximity of the control house, incoming 138kV lines, 12kV distribution bays, fencing, and control cable trench there were many obstacles to overcome. Irby had two jobsite preplanning meetings with TNT crane onsite prior to them mobilizing in the crane for this work. Irby is proud to say that within six hours the entire microwave tower was set and back bolted without incidents. It is important to note the amount of planning and time that went into this critical pick and placement so that Irby could see such a safe and amazing result of such a difficult installation.

Start Date: March 2018
Completion Date: June 2018

 

If you would like to request information on this project or submit a request for bid, click here. 

 

Lampasas to San Saba 138kV Transmission Line

Lampasas to San Saba 138kV Transmission Line

Lampasas to San Saba 138kV Transmission Line 

Type: Transmission
Scope: 33.4 miles of 138kV transmission line; steel and concrete poles
Location: Lometa, TX
Client: Lower Colorado River Authority

Irby Construction was awarded the LCRA Lampasas to San Saba 138kV transmission line project in December of 2016. This was a project located in Lometa, TX with a scope of 33.4 miles of 138kV transmission line including steel and concrete poles.

The project had some tight environmental constraints at the outset. Portions of the project were in a bird habitat and Irby had a limited time frame to complete this portion of the work before March 2017 when the bird habitat restrictions would go into place. Irby provided tools and equipment with almost 60 people and finished before the restrictions started. Subcontractor Asplundh Brush Control assisted with installation of environmental controls on the ROW.

Irby’s foundation group successfully self-performed the foundation scope, which included 22 drilled pier foundations. A major hurdle on the project was that our drilling operation encountered much more rock than anticipated. Careful planning and redeployment of resources, (including a drill rig from sister company Longfellow Drilling), allowed us to continue to make schedule. The project also included a railroad crossing and a major highway crossing which required significant planning and were accomplished successfully. With assistance from our affiliate operating unit North Houston Pole Line performing energized work in one section of the project, Irby successfully completed this project in January of 2018.

Start Date: December 2016
Completion Date: January 2018

 

If you would like to request information on this project or submit a request for bid, click here.