Here the ROV inserted a hydraulically latching blanking plug (a vehicle assisted tool) into place in the fore bay of a hydro electric dam. Working at a depth of over 100 feet, the intake (14 inches in diameter) was located with the aid of dual imaging sonars ranging from distant features on the dam face. Hibbard Inshore fabricated the blanking plug in house; the plug features hydraulic cylinder actuated latches and an internal video camera for monitoring seal integrity.
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