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AssigneeFirst Thermal Systems, Inc.
InventorsDavid N. Clum, Frederick Krosner, Jewel R. Leak, Jr.
Estimating the term…
A method and apparatus for controlling zebra mussels in the inlet cell of a utility power plant by isolating a batch of water in the cell from the water supply of a lake or river and the equipment plant by shutting an inlet gate and shutting outlet valves from said cell. The batch of isolated water is thereafter heated to a lethal temperature which is maintained for a sufficient period of time to ensure 100 percent mortality to the zebra mussels within the cell. The water may be maintained in a static condition and heated by a heat exchanger disposed within the cell. Alternatively the water may be fed to a heat exchanger, heated outside the cell, and returned to the cell. The water is heated to a range of approximately 95.degree. F. to 100.degree. F. and held at the heated temperature within the cell for approximately 30 minutes.
A method of controlling zebra mussels entering a utility plant having an inlet cell drawing water from a supply contaminated with zebra mussels and using said water in equipment within the plant downstream of the inlet cell so as to protect said equipment from damage by the zebra mussels, said method comprising:
A method of controlling zebra mussels entering a utility plant having an inlet cell drawing water from a supply contaminated with zebra mussels and using said water in equipment within the plant downstream of the inlet cell so as to protect said equipment from damage by the zebra mussels, said method comprising:
Apparatus for controlling zebra mussels entering a utility plant having an inlet cell drawing water from a supply contaminated with zebra mussels and using said water in equipment within the plant downstream of the inlet cell so as to protect said equipment from damage by the zebra mussels, said apparatus comprising gate means for selectively shutting the flow of water into said cell, valve means for selectively shutting and opening the flow of said water out of said cell, whereby a batch of water may be isolated within said cell when said gate means and said valve means are closed, heat exchanger means for heating said batch of water to a temperature lethal to said zebra mussels, and pump means for feeding said water out of said cell upon opening said valve means after a sufficient period of time to kill said zebra mussels.
Dependencies are inferred from the claim text.