MARINE WORK & COMMERCIAL DIVING
||Traveling Water Screens
||Underwater Video System
|Raw Water Intakes
||Waste-Water Pond Aeration System
|Silt and Debris Removal
||Underwater Welding and Cutting
Finger Lakes was contracted to remove 400 Cubic yards of material blocking the intake of a powerhouse. This project used diver’s to pump the material away. The water was filtering though specialty designed bags placed inside multiple dumpsters. The retuning water was monitored for elevated turbidity levels to conform to DEC permitting. After dewatering and passing the paint filter test, the dumpsters were removed and sent to the landfill.
Unit 3 Gates A and B:
Finger Lakes teamed up with another contractor to install 2 new gates including new guides. Finger Lakes was responsible for installation of and alignment of the guides. This project required saw cutting and widening of the original gate guides, then installing new stainless steel guides and lentils at each opening. After installation, the open areas of the guides and lentils were grouted in place. Each gate was approximately 10’ wide by 12’tall.
Large rocks that where restricting the tail race water flows were removed.
Project was to removal and reinstallation of a 24" gate valve which was located 50' down a man hole. A new intake and trash rack was required on this project due to the deterioration of the existing intake. Also required on this job was the removal of sediment built up in the emergency spill way and the mowing of the dam.
Installation, sealing, and removal of 48 stop logs downstream of the trash racks. The installation of 14 trash rack guides and 48 trash racks.
WV Trash Rack:
Project was in West Virginia in front of a 120' dam. Finger Lakes was contracted to fabricate and install a new galvanized trash rack. The rack was placed prior to the initial filling of the reservoir.
Finger Lakes was contracted to fabricate a new stainless steel trash rack to replace a deteriorated steel rack system. The Project took place in Connecticut, and also included an aluminum pedestrian bridge.
Catholic Protection System:
Finger Lakes installed a catholic protection system in this 80’ potable water tower. This project took place in December and was in continuous use during the installation.
This intake is part of our annual cleaning program. The before and after show pictures show a dramatic difference eliminating the costly emergency repairs and shut downs due to lack of water.
Finger Lakes did all the underwater work for New Generation power plant in Albany, New York. The project consisted of Verifying Depths of Excavations, Installation of 150’ HDPE Piping, Diffuser Header, Back fill of the Pipeline, Cutting of Sheet Pile.
Stop Log Upgrade:
Finger Lakes upgraded this stop log door and removed steel from the intake structure. The door and door operator were removed and upgraded with a 14” gate valve recessed within the door.
Two EPDM membranes were installed on the back side of a dam. 1 section of flashboards gets removed to allow herring to swim though. The mats were designed to allow the herring to slide down without injury.
Fish Ladder Armoring:
Modifications were made to the fish ladder to help prevent damage from the turbulent pool at the base of the dam. Installation of stainless steel angle irons were used. One leg of the angle was inserted into the concrete and secured with epoxy. The other leg of the angle was bolted against the face of the angle.
The gauge was fabricated from 1/2 "stainless steel and is 10' in length. Every foot has the elevation number cut out of the stainless.
Concrete Tank Inspection:
Finger lakes was called in to inspect 2 concrete lined cooling tanks each holding ½ million gallon of water. The concrete tanks were suspected of having leaks which were causing inefficacy to the cooling system.
Repair a broken sluice gate stem and a replacement of 12" Gate valve.
Several tasks undertaken by Finger Lakes.
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