AUS divers inspected, repaired, and replaced a submerged aerator system on Kent Lake Reservoir. This included the instillation of a new inlet and vent lines on the submerged aerator system while also replacing mooring lines. AUS had a total of 600ft of custom pipe made for this project. The dive depth for this project was
On the Sammamish Bridge Project, AUS divers dredged, cut timber support piles, and rigged the bridge footings for removal on four different bridge piers. The purpose of footings is to support the foundation, prevent settling, and is crucial to providing the proper support for the structure. AUS divers dug under the 58-ton concrete footings in order
AUS divers installed a dewatering bulkhead and a hydraulically activated gate valve on the lower outlet structure at Gene Wash Reservoir. The dewatering bulkhead was installed by AUS divers at a depth of 150 feet.
Wells Dam, Douglas County PUD – Draft Tube Cable Replacement AUS was contracted to replace the Draft Tube Gate Cables in Unit 3. This work entails the entire dive crew and the PUD Maintenance Crew working under pressure in the Draft Tube Gallery. The gate connection is underwater and the gate hoists are
Wanapum Dam, Grant County PUD - Pipe Replacement Project As part of the ongoing Dive Services Contract with Grant County PUD, AUS provided dive support to install a bulkhead plate over the Raw Water Intake so that a valve and new pipes could be installed. Due to contours on the dam face, the
Cabinet Gorge Dam, AVISTA Utilities – Fish Passage Project AUS was contracted to provide the underwater support to construct a dewatering structure so that the fish passage facility could be built in the dry. Divers performed the following tasks during the project: Drill and install anchor bolts to secure
Thompson Falls Dam, Northwestern Energy – Spillway Gate Rebuild AUS was contracted to install and seal stoplogs to dewater the spillway gate. This allowed for maintenance, repairs, and painting to be performed on the gate in the dry. AUS removed the dewatering structure after the gate work was completed.
From CEATI: As we look to the future of the hydropower industry, hydro utilities and dam owners are searching for new and innovative ways to inspect, maintain, operate, and manage their systems. New technologies and tools are constantly under development in the areas of hydrology, operations and planning, inspecting and maintaining powerhouse equipment, and surveillance
The Dept. of Natural Resources has identified at least 204 derelict vessels statewide. Those are sunken boats that can cause pollution and safety issues. View the video here.
August 2013 Associated Underwater Services was subcontracted by Pacific Pile and Marine to perform underwater maintenance on the Wrangell Ferry Terminal in Wrangell, Alaska. This consisted of two phases, the first phase was an ROV inspection to identify problem areas at the terminal. The second phase was to address the areas exhibiting the most wear.