DARYL R. DUNAHOO, P.E.
AREAS OF SPECIALIZATION
Substation battery selection, bolted electrical connections, substation design, materials
procurement, project management, control and relay system design, relay calibration and setting,
protective device coordination, substation cut-in and inspection services.
Mr. Dunahoo worked for Georgia Power Company from 1984 until 1989 and Southern
Engineering Company from 1989 until 1999. Mr. Dunahoo is a Project Manager, over substation
engineering, design, and construction, including recent turn-key substation projects. He is
experienced in substation relaying and protection, including relay calibration & troubleshooting,
high-pot testing of station equipment, substation modifications and upgrades, and co-generation
projects for industrial customers. He has been responsible for the scheduling and preparing of
plans, drawings, and specifications for dozens of substation projects.
Mr. Dunahoo has experience in designing and checking relay panels and troubleshooting relay
circuits. He has experience in the high voltage withstand and impulse testing of underground
cables, cable termination systems, insulators, transformers, and hot-line work equipment.
Additional areas of specilization include: DC battery systems, bolted connections and conductor
Titan 138 – 13.2kV Substation – Public Utilities Board, Brownsville, Texas
PUB needed a new dedicated industrial substation to serve a new tire manufacturing plant in
the city of Brownsville, Texas. The station was built for maximum reliability with dual 138 –
12.47kV LTC power transformers. The 138kV bus has four tap positions, two are for a future
on-site generation plant. The others feed two transformers which are configured with automatic
sectionalizing low-voltage breakers in metal-clad switchgear. Basler parallel balancing equipment
and GE microprocessor relays assure continuity of service, even if a transformer fails.
In Mr. Dunahoo’s capacity of Project Engineer for this $1.5 million substation, he was
responsible for all aspects of the design, scheduling, testing and final inspection of this project.
The station will go in service in the Spring of 1999.
Bellevue 115-25kV Substation – Georgia Power Company, Atlanta, GA
Georgia Power Company hired PCE to produce all the control wiring, protective relay system,
and control circuit drawings to modify this 33 year old station. Mr. Dunahoo was responsible
for utilizing Georgia Power Company’s proprietary material ordering, scheduling, and tracking
systems as well as utilizing GPC standard control practices. The engineering work was
completed in December, 1999.
Swords Substation and Wolfskin Substation – Rayle EMC, Washington, GA
These 115-25kV stations are designed with fused 7.5 MVA transformers and three 25kV feeder
circuits. The cooperative hired PCE to procure the land, prepare and obtain RUS approval
on Environmental Reports, Design the stations and coordinate transmission line work with
the Transmission Supply Company. PCE coordinated the Boundary and Topographic survey,
grading design, and geotechnical exploration work. These projects were designed, bid,
scheduled, and tracked by PCE. Mr. Dunahoo was responsible for preparing final drawings,
writing the contract and specifications, biding the projects, awarding the erection contract,
performing the final inspection, and placing the stations in service. The first station was
completed on time and under budget in June 2000. The second is scheduled for completion
in the Spring of 2001. PCE handled the contract closeout process and complete all the RUS
required forms to assist Rayle EMC in obtaining RUS financing for these projects.
Sawnee Electric Membership Corporation – Cumming, Georgia
Mr. Dunahoo has been responsible for designing and managing the construction of more
than fifteen 25kV Switching Stations over the last ten years. On each of the projects, he
was responsible for all aspects of labor and material specification and procurement, project
management, and contract close-out procedures. This very satisfied client continues to put it’s
trust in Mr. Dunahoo for all of it’s substation needs.
B.S. Electrical Engineering, Georgia Institute of Technology
Minor in Industrial Psychology (Ergonomics and Industrial Factors Engineering)
Registered Professional Engineer, Multiple states
Mr. Billy Ussery, Chief Operations Officer,
Sawnee EMC, Cumming, GA (770) 887-2363 x396
Mr. Rich Smith, Director of Electrical Engineering, Operations, & Power Supply,
Public Utilities Board, Brownsville, TX, (956) 983-6203
Mr. David Hartley, V.P. Engineering and Operations,
Oconee EMC, Dudley, GA, (912) 676-3191
Mr. Rene Smith, VP Operations,
Sumter EMC, Americus, GA, (912) 924-4982