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Nuclear Industry

AFT in the Nuclear Industry

Water cooling, Wastewater

Nuclear knows better than anyone that safety is the number one priority. AFT knows that confidence in results can be the difference between business as usual and a nuclear meltdown. Not only is AFT software nuclear validated, its been trusted and proven to help keep that pesky radiation to the reaction chamber.

AFT In Action

Nuclear Power Station Service Water Pump NPSH Hydraulic Model Benchmarked Using AFT Fathom

Company: Duke Energy

Problem: A safety-critical cooling water system faced corrosion from years of use. A corresponding reduction in NPSHa for cooling water pump could lead to catastrophic failure. 

Product Used: An AFT Fathom model was developed and calibrated against field data. The model accounted for the piping configuration as well as additional roughness and constriction caused by corrosion.

Solution: Duke Energy benchmarked an AFT Fathom model to corroded pipe performance in a safety-critical cooling water system, matching system to within 0.2 psig. Worst case scenario included max operating temperature, low liquid feed level, and assumed strainer fouling. The potential pressure recovery from cleaning pipes was also evaluated.

AFT Fathom Used to Enhance 40-Year Old Hand Calculations at Nuclear Power Plant

Company: Energy Northwest

Problem: An existing nuclear cooling system was modeled with hand calculations. Nuclear regulations required AFT software be verified against existing hand calculations.

Product Used: AFT Fathom was used to model the cooling system under nine operating conditions.

Solution: Energy Northwest enhanced 40-year-old hand calculations for a nuclear power plant, confirming AFT Fathom results to within 1% accuracy of the system. AFT Fathom was confirmed with frictional loss differences ranging from 0.03% to 0.80% and is now the main modeling tool used at the power plant.

World War II Remnant: Nuclear Waste Transfer Lines Pressure Evaluation using AFT Fathom and AFT Impulse

Company: ARES Corporation (Sargent & Lundy)

Problem: Residual nuclear waste needed to be transported to a treatment facility safely.  ARES had insufficient confidence in manufacturer data for a nuclear surge analysis and the system had potential for siphoning and column separation.

Product Used: An AFT Fathom model was used to compare different system control methods and AFT Impulse was used to compare the impact of system parameters on surge.

Solution: Engineers evaluated transfer line pressures for nuclear waste from WWII weapons production. AFT modeling allowed for worst case scenario considerations where data was potentially unreliable and a siphoning solution was implemented based on model results.


"Test Drive" operating conditions and scenarios to determine sizes, pressures, temperatures, etc... to fix or upgrade systems


Accurately simulate component-system interactions prior to constuction to ensure cost-effective and efficient designs


Avoid redundant model building by importing GIS, PCF, EPANET, or CAESAR II Neutral files


Automate data transfer with the Excel Export Manager, organizing your model's results exactly how you want them

Engineers of all levels and background use AFT pipe flow analysis software to model and analyze their piping and ducting systems. Here are the top 5 ways AFT can help you:

1. Size pipes, rotating/reciprocating equipment and valves

We help specifying engineers properly size pipes, pumps, fans, compressors, control valves and relief valves. Read More...

2. Save energy and improve equipment reliability

We help consulting, facility and pipeline engineers evaluate options in fluid systems to reduce energy and improve reliability of pumps, fans, compressors and components. Read More...

3. Solve operational problems

We help facility and pipeline engineers identify the root cause of operational problems in fluid systems. Read More...

4. Mitigate waterhammer

We help engineers improve safety by predicting waterhammer/surge transient pressures, evaluating potential operational changes to mitigate waterhammer, and enabling engineers to size and locate surge suppression devices. Read More...

5. Mitigate pulsation issues

We help engineers predict acoustic natural frequencies and determine undesirable positive displacement pump speeds which excite those frequencies. Read More...

Determine the Optimal System

Pump performance, BEP, fluid transients, force calculations,  
detect sonic choking, and so much more...
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Quickly Build Models You Need

Excel integration, automatically size systems, model importing ... and 17
other features that help engineers efficiently analyze their system.
View Top Features

Reports & Presentations

Report-ready graphics, animations, and confirming code compliance are just a few reasons to invest in quality flow analysis software.
View Top Features
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