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President: Alfred Nash, P.E.
info@renewablepowerconsulting.com
info@renewablepowerconsulting.com
Part 12D Inspections
Derby Dam Part 12D Inspection
The Derby Dam is a 25’high by 675’ long masonry and concrete capped timber crib dam, located on the Housatonic River in Shelton Connecticut. Renewable Power Consulting initially provided compliance response for the fifth Part 12D safety inspection. We performed the sixth Part 12D ourselves and also provided a potential failure mode analysis. The inspection services included revised dam stability calculations, slope stability calculations, and revision to the Dam Safety Surveillance Monitoring Plan. Finally, we prepared the owners dam safety monitoring plan.
207-992-3926
Renewable Power Consulting performs visual and analytical inspections of existing water retaining and conveyance structures (dams, canals and penstocks). Inspections are reviewed and analyzed based on criteria established by the Army Corps of Engineers and the Federal Energy Regulatory Commission Part 12 requirements. Our staff has been approved by the FERC to provide Independent Consultant services for Part 12D Safety Inspections and Potential Failure Mode Analysis.
Visual inspections and reporting reviews the following:
•FERC Approved Independent Consultant
•Settlement and movement monitoring and instrumentation
•Seepage/Leakage and Erosion review
•Structural Distress and Deterioration
•Outlet/Spillway gate condition and operation
•Water conveyance systems condition review (canals / flumes / penstocks / tunnels / surge chambers, emergency bypass or closure systems, etc.)
•Metal thickness testing
•Massachusetts Phase I and Phase II inspections
Analysis includes:
•Review of dam stability under various load conditions
•Dam stabilization design (i.e. rock and soil anchors)
•Establishment of Action and Threshold limits for monitoring instrumentation
•Establishment of monitoring procedures and frequency
•Dam breech impact analysis
•Preparation of Emergency Action Plans and Testing of Plan
•Penstock stress analysis
•Structural review of canal features and penstock supports
•Potential Failure Mode Analysis (PFMA) and Facilitation
•Supporting Technical Information Document (STID)
•Hydrologic and Hydraulic Analysis
•FERC Approved Independent Consultant
•Settlement and movement monitoring and instrumentation
•Seepage/Leakage and Erosion review
•Structural Distress and Deterioration
•Outlet/Spillway gate condition and operation
•Water conveyance systems condition review (canals / flumes / penstocks / tunnels / surge chambers, emergency bypass or closure systems, etc.)
•Metal thickness testing
•Massachusetts Phase I and Phase II inspections
Analysis includes:
•Review of dam stability under various load conditions
•Dam stabilization design (i.e. rock and soil anchors)
•Establishment of Action and Threshold limits for monitoring instrumentation
•Establishment of monitoring procedures and frequency
•Dam breech impact analysis
•Preparation of Emergency Action Plans and Testing of Plan
•Penstock stress analysis
•Structural review of canal features and penstock supports
•Potential Failure Mode Analysis (PFMA) and Facilitation
•Supporting Technical Information Document (STID)
•Hydrologic and Hydraulic Analysis
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