Hanford VIT Plant

Hanford Tours - Facility Nuclear Protection

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Layers of Protection
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Layers of Protection

WTP design provides multiple layers of protection to confine hazardous materials:

  • Material is confined in process vessels and piping designed for a 40-year service life.
  • The process vessels are ventilated by a dedicated exhaust system which filters the exhaust before release to the environment.
  • The process vessels are located inside concrete cells, which provide shielding against direct radiation and confinement should a spill occur. These cells are designed with walls, floors, and ceilings that are up to several feet thick. They also have steel liners and are ventilated by an exhaust system which is filtered before exhausting to the environment (this ventilation system is independent from the vessel ventilation system).
  • The filters for the process cell and process vessel exhaust systems are also located in concrete cells to provide additional radiation shielding and confinement.
  • The process and filter concrete cells are located inside the main process facilities. The main process facilities have a third independent ventilation system with HEPA filters.
  • The WTP facility is remotely located on the Hanford Site, approximately 20 miles from Richland and 5 miles from the nearest location accessible to the general public.

Liner: The concrete cells are lined with stainless steel plating to confine any material that may be leaked from the process vessels or piping.

Fan: Exhaust fans remove air and particulates from areas of the facility and from the process vessels. The exhaust air is filtered through HEPA filters prior to being released to the environment through the exhaust stack.

Wall: The cell walls are constructed of reinforced concrete that is up to several feet thick to provide shielding and confinement.

Filter: Exhaust air is filtered through high efficiency particulate air (HEPA) filters prior to release to the environment. Three separate ventilation systems provide primary, secondary, and tertiary confinement. The HEPA filters have a removal efficiency of greater than 99.9%.

Vessel: Process vessels are located inside of concrete cells that provide shielding and confinement.

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Liner: The concrete cells are lined with stainless steel plating to confine any material that may be leaked from the process vessels or piping.

Fan: Exhaust fans remove air and particulates from areas of the facility and from the process vessels. The exhaust air is filtered through HEPA filters prior to being released to the environment through the exhaust stack.

Wall: The cell walls are constructed of reinforced concrete that is up to several feet thick to provide shielding and confinement.

Filter: Exhaust air is filtered through high efficiency particulate air (HEPA) filters prior to release to the environment. Three separate ventilation systems provide primary, secondary, and tertiary confinement. The HEPA filters have a removal efficiency of greater than 99.9%.

Vessel: Process vessels are located inside of concrete cells that provide shielding and confinement.

WTP design provides multiple layers of protection to confine hazardous materials:

  • Material is confined in process vessels and piping designed for a 40-year service life.
  • The process vessels are ventilated by a dedicated exhaust system which filters the exhaust before release to the environment.
  • The process vessels are located inside concrete cells, which provide shielding against direct radiation and confinement should a spill occur. These cells are designed with walls, floors, and ceilings that are up to several feet thick. They also have steel liners and are ventilated by an exhaust system which is filtered before exhausting to the environment (this ventilation system is independent from the vessel ventilation system).
  • The filters for the process cell and process vessel exhaust systems are also located in concrete cells to provide additional radiation shielding and confinement.
  • The process and filter concrete cells are located inside the main process facilities. The main process facilities have a third independent ventilation system with HEPA filters.
  • The WTP facility is remotely located on the Hanford Site, approximately 20 miles from Richland and 5 miles from the nearest location accessible to the general public.