How Chemical Carts Provide Safe Handling and Disposal of Chemicals

How Chemical Carts Provide Safe Handling and Disposal of ChemicalsChemical handling equipment is an important part of a semiconductor manufacturing operation because the aggressive chemicals used in etching and cleaning semiconductor wafers have to be stored, delivered to the process, and disposed of safely. Chemical carts, also referred to as chemical pump carts or chemical collection carts, are a convenient way to remove waste chemicals from process tanks and ready them for disposal. These carts are compact units that can be rolled up to the processing line to pump out processing tank contents. Carts have to be designed for safe pumping and containment of the chemicals and for moving them to a safe location for further treatment.

Chemical Cart Design Features

Modutek’s chemical carts allow operators to quickly remove used chemicals from a process line and let the process continue to the next step with a minimum of delay. The carts are easily rolled up to the process tank that contains the used chemicals and operators can safely transfer even toxic or corrosive chemicals. Modutek’s chemical carts have the following features:

  • Compact profile at 36 inches long, 18 inches wide, and 42 inches high
  • Made of white polypropylene resistant against acids; also available in stainless steel for solvent applications
  • Mounted on swivel casters that can be locked
  • Suction wand for emptying process tanks
  • Independent discharge tube for transfer of waste chemicals to a neutralization system
  • Pneumatic pump, three-eighths inch
  • On-cart five-gallon chemical tank with double containment that is Department of Transport approved
  • High-level sensor interlocked with pump for additional safety
  • All-Teflon piping

Once operators have pumped waste chemicals into the cart tank, the cart can be rolled out to a neutralization area or the waste can be shipped off-site for neutralization and disposal by a specialized company. In either case, the amount of chemicals and the treatment are recorded to ensure compliance with local environmental regulations.

Chemical Handling Equipment Increases Workplace Safety

Chemical handling equipment such as chemical carts allows operators to receive, store, deliver and discharge dangerous chemicals safely. Well-designed chemical handling equipment can reduce waste, deliver accurate dosages to the process and track chemical use. Containment of spills is an important safety and environmental issue that can be addressed by good design practices. Modutek’s extensive experience with wet process technology and the acids used to ensure that the company’s chemical handling systems operate in a completely safe and reliable manner.

Chemical Handling Functions Require Different Types of Equipment

While chemical carts used for the disposal of used chemicals fulfill one particular role, similar units can take on other functions. Chemical delivery systems handle chemical reception, storage, and delivery to the process. They can include remote bulk storage such as in large tote chemical containers that can supply high volumes of chemicals or 55-gallon drums located at the process. Chemical delivery systems can include software for dosage control and software can control the mixing of chemicals as well.

Chemical lift stations can fulfill a role similar to chemical carts but the units are permanently installed. They are sometimes located behind the wet process station they are serving, but Modutek has developed a space-saving design that allows an integration of the lift station in the process line. When chemical waste or waste water enters the lift station tank, the liquids are pumped to a neutralization area for further treatment.

Modutek’s product line of chemical handling equipment allows manufacturers to make their workplaces safer and save money. Chemical carts and other chemical handling equipment can be customized in terms of flow, capacity, and functionality to respond exactly to customer needs. Modutek can leverage its experience in semiconductor manufacturing equipment to help customers choose the right systems and ensure that the chosen systems perform as needed.

How Chemical Carts Support Chemical Disposal

How Chemical Carts Support Chemical DisposalWhen difficulties associated with chemical disposal and regulatory compliance increase, it’s time to think about either removing used chemicals for off-site disposal or using dedicated equipment for disposal according to official guidelines. Chemical carts can be rolled over to process stations and can pump used chemicals from the process tanks to a container on the cart. The used chemicals can then be turned over to a disposal company or can be neutralized and treated in an onsite facility. The manufacturing process can continue with a fresh batch of chemicals while documentation and handling of the used chemicals can be carried out according to local regulations.

Chemical Carts Remove Chemicals Quickly and Safely

Once the chemicals for a process step have fulfilled their function and the process step is complete, the used chemicals have to be drained from the process tank so that the next process batch can begin. The use of chemical handling equipment such as pump carts is a flexible solution allowing operators to remove used chemicals from the process tanks for different process steps.

An operator can roll the chemical pump cart to the tank that contains the used chemicals. A suction wand allows the operator to pump the chemicals out of the process tank. The used chemicals are pumped into a dedicated storage tank on the chemical pump cart and the cart can then be rolled out to a designated disposal area.

Depending on whether the company handles chemical neutralization and disposal in house or not, the chemicals can be transferred to a disposal system or turned over to an external chemical disposal specialist. In either case, documentation for the handling of chemicals according to local laws and regulations can be prepared before final disposal.

Modutek’s Chemical Carts Feature Ease of Use and Enhanced Safety

At 36″ long x 18″ wide x 42″ tall, Modutek’s chemical pump carts are compact and easy to roll out. Made of white polypropylene, the carts run on swivel casters with brakes and feature independent suction and discharge tubes. Pumping is with a 3/8th inch pneumatic pump. The five gallon chemical tank on the cart has a double containment system and is DOT (Department of Transportation) approved. A high level sensor on the tank is interlocked with the pump for additional safety. The plumbing is all Teflon and each cart can handle multiple applications.

As an option, chemical carts can be delivered in a stainless steel design for solvent applications. Other options include a pressure interlock safety switch, a large capacity tank and a double dump design. Modutek can help customers decide on the options they need and make sure that the chemical pump carts meet their requirements.

Modutek’s Chemical Handling Products Fulfill Manufacturing and Research Facility Needs

Modutek manufactures a complete line of chemical handling equipment to meet the needs of manufacturing plants and research facilities. In addition to chemical carts, Modutek’s chemical handling systems include chemical delivery systems, chemical collection systems and chemical lift stations. The systems can store chemicals, deliver them to process stations and remove them to neutralization areas. The chemical handling equipment is designed to interface with existing or new manufacturing lines and can be customized for almost any application. For example, storage in large tote containers with a load cell interface reduces drum changes and the lift station functions can be incorporated into a process station in a space-saving design. Throughout the design process, Modutek works closely with customers to identify production line issues and develop effective solutions. The company prioritizes customer satisfaction and delivers equipment of the highest quality with low operating costs and a low total cost of ownership. Contact Modutek for a free consultation or quote on selecting the right chemical handling equipment to meet your specific requirements.