
DTA offers a full range of hydroelectric and related engineering
services provided by technical professionals with as much as 30 years of
experience in their disciplines. Our engineers work with clients to
carefully identify engineering needs, develop work plans that fully and
efficiently address those needs, and implement engineering tasks in a
manner that leads to solutions. Our engineering specialties include:
Siting studies; dam safety assessment; structural evaluations; repair and
rehabilitation; evaluation and design of earth, concrete gravity and arch
dams; design, analysis, inspection and evaluation of gates, penstocks, water
conveyance systems, roads and bridges; fish passage system design; civil
site design; erosion and sedimentation control. Read more...
State-of-the-art electrical and control system upgrades, automation, remote
operation and troubleshooting, power systems, station service systems,
substation and transmission line design. Read more...
Selection and specification of equipment, condition assessment,
trouble-shooting, engineering audits and life assessments, start-up testing,
forensic and metallurgical analysis, turbine and governor upgrades.
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Earth dams, tunnels, rock mechanics, seismic analysis and design, dam
stability, erosion and seepage evaluations/control, subsurface investigations.
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Development of site-specific Probable Maximum Precipitation & Probable
Maximum Flood for determination of Inflow Design Flood; evaluation and
determination of existing site hydrology, and development of synthetic site
hydrology including unregulated inflow; flood-flow frequency analysis, river
channel and reservoir routing; open channel modeling and analysis, and closed
hydraulic system analysis and design; headloss studies; and efficiency testing
and modeling.
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Desktop computer modeling of river basins and multiple plant operations for
use in optimization, strategic planning, upgrade evaluations, evaluation of FERC
license constraints and agency negotiations.
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Site Evaluation, conceptual designs, feasibility studies, preliminary and
detailed design, evaluation of hydromechanical and related power station
systems. Read more...
Data Review and on-site inspections, strategic planning for revenue
enhancement and cost reduction development, regulatory and environmental review
and risk assessment.
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Modeling of conveyance systems and of turbine and governor characteristics,
sizing for optimal water conveyance, calculation of transient pressures and
speeds. Read
more...
Absolute efficiency testing according to ASME and IEC codes,
Winter-Kennedy index testing, head loss measurement, resolution of
hydraulic instability and noise and performance and guarantee testing.
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more...
Operational testing of turbines and related power station equipment,
vibration measurements and analysis, dynamic frequency analysis and
dynamic balancing.
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more...
FERC Part 12 inspections, Emergency Action Plans and Functional Exercise,
review of existing documents, hydrologic analysis, geologic & seismic reports,
stability calculations, dam failure analysis and inundation mapping, field
inspections; spillway adequacy evaluation; determination of Inflow Design Flood.
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