The Nuclear Electrical Engineer
Here you can find design tips on technical skills like cable and breaker sizing, short-circuit evaluations and more, PLUS deep-dive analysis of nuclear-specific topics like design basis, Tech Specs, UFSARs, and safety-related SSCs — built from primary source documents.
It is typical when calculating short circuit currents to incorporate the full cable length into the fault analysis. However, you must be careful when analyzing…
Fault-pressure relays protect transformers from internal electrical faults that other protective relays, like differential or overcurrent, can’t always detect. If the transformer’s protective relaying…
Digital, microprocessor-based protective relays aren’t yet a common staple in nuclear power plants because of the trepidation associated with installing sensitive solid-state circuitry in…
The term “subtransient reactance” is denoted by the symbol X’’d and is used to calculate available short-circuit generator fault currents. But where does it come from?…
I described in a previous article the benefits of learning how to do short-circuit analysis by hand. There are five primary elements that you…
You won’t do many short-circuit hand calculations, but it’s useful to go through the exercise to develop an understanding of the fault behavior of…
There are three common types of protective devices you’ll encounter in the nuclear power industry. Here I summarize their functionality . . . .