Rod Drop Testing
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Control rods used in nuclear power plants need to be checked at regular intervals to ensure that they will deploy properly should the need ever arise. Therefore, during scheduled nuclear plant outages, this is one of the most important tests that is done. Due to the sheer number of sensors, this test requires a large number of input channels - anywhere from 32 to 64 in most cases (this varies by reactor make and model). All channels need to be sampled in the hundreds of Hz, and a real time presentation is required, as well as paper output, export to ASCII text, or both.
The solution:
A versatile data acquisition instrument from Dewetron, with anywhere from 32 to 96 differential inputs (high isolation is not needed in this case). Triggering is an important feature, of course, and we provide easy trigger setup in our software. Or you can just let the system record and then drop the rods - whichever you prefer! After recording, simply print out the results, or export to Excel, Matlab, plain ASCII text, and many other formats. You can also use the on-screen controls to zoom in and take precise readings on the charts, so that you can verify that the rods deployed to a certain dimension within the allowed amount of time. This is mission critical, and Dewetron does it perfectly.
Here are a few recommended models and their capabilities:
- DEWE-3031, configured with 16 x MDAQ differential input modules (portable)
- DEWE-3041, configured with 32, 64, or even 96 x MDAQ differential input modules (portable)
- DEWE-3200, configured with DAQ isolation modules internal and in expansion racks (quasi-portable)
- DEWE-2601, configured with up to 64 MDAQ differential input modules (benchtop)
- Florida Power and Light
- Progress Energy
- Entergy Operations
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