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Corpus Christi Army Depot

Year Submitted: 2003

Process: Plating

Industry: Military

Wastes Reduced: Hazardous Waste

Substance: Cadmium, Cyanide

Equipment: Ion Deposition

Location: Corpus Christi TX

No. of employees: 3500

Contact: Steve R. Connor

Phone: (512) 939-2733



Description:

Steel parts and components used in harsh environments are plated for corrosion resistance. The standard industry plating techniques produce hazardous cyanide and cadmium plating wastes.

P2 Application:

In 1993 the depot installed ion vapor deposition equipment to deposit a thin layer of aluminum on critical steel parts for corrosion resistance. Located in the plating shop, the coating is applied in a five foot diameter vacuum chamber. This project reduced hazardous cyanide and cadmium wastes by 50%. As military specification become more environmentally sensitive, this could increase up to 80%

Environmental Benefits:

The system currently reduces the generation of hazardous waste by 4,336 pounds per year. Reduced use of toxic materials also reduces the potential for worker exposure. Water savings were also very signifant, about 3,000,000 gallons per year by going to a closed loop system.

Details of Reductions

Additional Information :

The ion vapor deposition equipment cost $848,000. The first years savings in operational and procurement costs was $1,100,000, $2,081 in disposal costs alone. Worker safety caustics, acids & cyanides used in plating.

Source: TCEQ



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