In March 2018, the Lower Colorado River Authority (“LCRA”) contracted Irby to perform a 138kV/145kV substation breaker replacement at the Gillespie substation near Fredericksburg, Texas. The Irby scope included replacement of six 138kV oil-filled circuit breakers with new 145kV breakers, and the installation of new control cable and junction boxes at each breaker stand. 

Throughout the project, Irby was able to display its craftsmanship specifically pertaining to aluminum bus work, bending and termination, as well as control cable installation and termination. Executed to LCRA schedule and budget, the project was successfully delivered in April 2018. 

Start Date: March 2018
Completion Date: April 2018

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Lone Star Transmission, LLC (“Lone Star”) provides transmission services to the Electric Reliability Council of Texas (>25 million customers) primarily via renewable wind energy resources from rural west Texas.

Commencing in July 2018, Lone Star contracted Irby to perform a series of upgrade projects to its four major 345kV transmission substations (Novaro, Sam, West Shackelford, and Claytonville). The project scope included the retrofit 120 Motorized Air-Breaks on existing hand-operated 345kV switches and extensive coordination was required to meet the outage/swap out schedule. Completed in October 2018, the project was delivered to specification with zero lost time incidents.

Start Date: July 2018
Completion Date: October 2018

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In recent years, persistent seasonal flood conditions in and around Hays County, Texas have impacted operations at the Lower Colorado River Authority (“LCRA”) Canyon Substation. In March 2018, LCRA contracted Irby to perform flood remediation works including the installation of a new control house and the replacement of 138kV breakers at the substation. The project involved significant coordination with client and subcontract teams to perform the rehabilitation works within constricted work areas and to a condensed LCRA outage schedule.

The Irby scope included foundation and control building construction (supported by East & Westbrook and Southwest Erectors), panel removal and relocations, pulling and termination of control cable, and installation of a microwave tower. All works were completed to the LCRA outage schedule with zero lost time incidents.

Start Date: March 2018
Completion Date: June 2018

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