Custom valves pave way for nuclear waste cleanup

09/02/2005


A set of custom valve and valve automation products from Flowserve is playing a significant role in a major nuclear waste cleanup effort. The devices are being used for the control, isolation, and treatment of radioactive waste slurries at the Hanford Waste Treatment Project (WTP) in Washington State.

The site has one the of the largest concentrations of radioactive waste in the world, the result of 45 years of plutonium production for nuclear weapons from the Manhattan project through the Cold War. Some 53 million gal. of waste is stored there in 177 underground tanks. In December 2000, the U.S. Department of Energy’s Office of River Protection awarded Bechtel National Inc. a contract to design, construct, and commission the WTP to remediate the hazard. The $5.7 billion build-out is expected to take up to 10 years to complete.

Among the many needs of the waste treatment process were specialized valves for installation in containment vessels called “bulges.” Each bulge is roughly the size of a small swimming pool and designed to contain the pumps, valves, and piping required to transfer radioactive liquid waste slurry from existing storage tanks to a waste pretreatment building for processing.

Flowserve recommended high-performance plug valves for the slurries. Although it did not yet have a valve in its product line that would meet the contractor’s remote repair requirements, its Durco Mach 1 high-performance plug valve, which had not yet been released, could be modified for the needed remote operation and repair and met other requirements. Changes were made to design and build adjustable stainless steel extensions with double universal joints to enable remote operation and repair of the valves from outside the bulge containment vessels.

In addition, Flowserve modified another plug valve design to meet the need for jumper valves within the pretreatment building. Here, the challenge was to develop a “jack nut” feature that would enable remote release and replacement of the plug and sleeve cartridge assembly by a robot. Successfully meeting these requirements led to a multi-million order for the automated jumper valves.

Click here to download a pdf that describes all the details of this project.

—Jeanine Katzel, senior editor, Control Engineering, jkatzel@reedbusiness.com





No comments
The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by...
The System Integrator Giants program lists the top 100 system integrators among companies listed in CFE Media's Global System Integrator Database.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
This eGuide illustrates solutions, applications and benefits of machine vision systems.
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
Robotic safety, collaboration, standards; DCS migration tips; IT/OT convergence; 2017 Control Engineering Salary and Career Survey
Integrated mobility; Artificial intelligence; Predictive motion control; Sensors and control system inputs; Asset Management; Cybersecurity
Big Data and IIoT value; Monitoring Big Data; Robotics safety standards and programming; Learning about PID
Featured articles highlight technologies that enable the Industrial Internet of Things, IIoT-related products and strategies to get data more easily to the user.
This article collection contains several articles on how automation and controls are helping human-machine interface (HMI) hardware and software advance.
This digital report will explore several aspects of how IIoT will transform manufacturing in the coming years.

Find and connect with the most suitable service provider for your unique application. Start searching the Global System Integrator Database Now!

Mobility as the means to offshore innovation; Preventing another Deepwater Horizon; ROVs as subsea robots; SCADA and the radio spectrum
Future of oil and gas projects; Reservoir models; The importance of SCADA to oil and gas
Big Data and bigger solutions; Tablet technologies; SCADA developments
Automation Engineer; Wood Group
System Integrator; Cross Integrated Systems Group
Jose S. Vasquez, Jr.
Fire & Life Safety Engineer; Technip USA Inc.
This course focuses on climate analysis, appropriateness of cooling system selection, and combining cooling systems.
This course will help identify and reveal electrical hazards and identify the solutions to implementing and maintaining a safe work environment.
This course explains how maintaining power and communication systems through emergency power-generation systems is critical.
click me