Tank Waste Processing and Tank Closure

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Savannah River Site Tank Farm

The Office of Environmental Management (EM) tank waste program consists of safely storing of 90 million gallons of radioactive liquid waste at the Savannah River Site (SRS), Idaho National laboratory (INL) and the Office of River Protection (ORP) at Hanford, Washington. Of the approximately 90 million gallons, 36 million gallons (250 x 106 Ci ) is stored at SRS, approximately 56 million gallons (109 x 106 Ci) is located at ORP while 900,000 gallons of liquid sodium bearing waste (300,000 Ci) is at INL. In addition, EM operates major nuclear facilities to process and dispose of the waste as well as emptying, cleaning and closing the waste tanks. The SRS and ORP waste streams will be separated a highly radioactive fraction and a low activity faction. The high activity portion will be vitrified while the low activity portion will be either vitrified or grouted. 

As liquid waste is processed, the tanks are operationally closed through a process that involves: bulk waste removal, heel removal, cooling coil flushing/annulus cleaning, isolation & residual sampling and grouting. To date, eight SRS waste tanks have been operationally closed and grouted.

The EM tank waste program’s goal is to continue cleanup progress in a cost-effective manner that is risk informed, engages stakeholders, applies innovative solutions and provides value to the American taxpayer.

Defense Waste Processing Facility

Current EM nuclear processing facilities include:

Savannah River Site

Waste Treatment and Immobilization Plant
Waste Treatment and Immobilization Plant

Office of River Protection

  • Waste Treatment and Immobilization Plant (WTP) (under contraction) – designed to vitrify both the high and low activity portions of the liquid tank waste with the current plan to initiate operations with low activity waste vitrification, Direct Feed Low Activity Waste (DFLAW)

 

 

 

Integrated Waste Treatment Unit
Integrated Waste Treatment Unit

 

Idaho National Laboratory (INL)

  • Integrated Waste Treatment Unity (IWTU) – designed to treat sodium bearing high level radioactive waste using Fluidized Bed Steam Reforming (FBSR) that decomposes waste using super-heated steam to produce a sodium-alumino-silicate (NAS) mineralized waste form that can be packaged for disposal 

Tank Waste & Waste Processing News

ORP Energizes Hanford Waste Treatment Plant Analytical Lab
EM’s ORP safely finished energizing the Analytical Laboratory at Hanford’s Waste Treatment and Immobilization Plant (WTP) recently.
October 16, 2018
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EM, PNNL Test Novel Sensor Technology for Hanford Waste Tanks
It’s nearly impossible to see the integrity of metal plates that form the base of the DSTs buried at Hanford, but hearing them may help researchers.
October 16, 2018
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SRS Completes First Transfer of Radioactive Waste to Mega Disposal Unit
About 8,500 gallons of low-level liquid waste from an underground waste tank at SRS have been treated and transferred to SDU 6.
October 9, 2018
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Hanford Vit Plant Support Facility Receives State Approval to Finish Construction
The Washington State Department of Ecology has granted the permits needed for Hanford’s WTP, or Vit Plant, to finish construction of the EMF.
October 9, 2018
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Savannah River Site Liquid Waste Contractor Earns 96 Percent of Award Fee
EM’s SRS liquid waste contractor recently earned an “excellent” rating and just over $12 million — or 96% of the available fee — for its performance.
October 9, 2018
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Crews Install New Cover at Hanford Wastewater Management Facility
EM Office of River Protection tank farms contractor WRPS recently finished installing a new cover for a LERF basin at the Hanford Site.
October 9, 2018
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Hanford Tank Farms Contractor Wins Fourth Consecutive Innovation Award
EM Office of River Protection tank farms contractor WRPS recently earned its fourth consecutive VVP Innovation Award.
October 2, 2018
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Protecting Workers from Chemical Vapors is Key Focus at Hanford
The EM ORP and Hanford tank farms contractor WRPS continue to take actions to protect workers from potential exposure to chemical vapors.
September 25, 2018
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Hanford Tank Waste Mission Shifts to Operations, Illustrating Completion Focus
Dramatic transformation is underway at the Hanford Site as the DFLAW approach to tank waste treatment shifts from construction to operations.
September 18, 2018
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Hanford Tank Farms Rover Demonstration Passes First Test
An autonomous instrumented vehicle —better known as a rover— easily traversed the terrain in a recent test drive near SX Tank Farm at the ORP Hanford.
September 11, 2018
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