Joel McDuffee
mcduffee.bsky.social
Joel McDuffee
@mcduffee.bsky.social
Nuclear engineer by day. Current and former hobbies include hiking, beekeeping, woodworking, 3D printing, reading histories, programming, feeding birds, and fencing (swords not posts).
One more picture from our Roan Mountain excursion. This flaming azalea was in full bloom on the Appalachian Trail near Carvers Gap. If you look closely, you’ll see a rainstorm on the mountain behind.
June 22, 2025 at 10:02 PM
We went to Roan Mountain yesterday at the height of the rhododendron bloom, and it did not disappoint. But the Helene damaged areas were a striking contrast. Storm microbursts destroyed certain areas but left neighboring spots untouched.
June 22, 2025 at 9:56 PM
Har!
December 25, 2024 at 10:14 PM
How do we keep it cool with all that power? Using what I think is one of the coolest features of HFIR and one that is rare in the nuclear reactor world -- involute fuel plates! There are hundreds of individual fuel plates, and each is curved so that the coolant gap is constant everywhere.
3/6
December 22, 2024 at 12:26 AM
HFIR is a special for a lot of reasons, but the main one is a ridiculously high power density. We generate 85 MW in a volume equal to maybe a half of a 55 gal drum. High power density means high neutron density, which is how we make critical medical isotopes that can't be made anywhere else.
2/6
December 22, 2024 at 12:26 AM
I filled my bird feeders for the first time in a couple of weeks due to travel. This cardinal was the first to find it, and he’s sitting on his personal hoard, unbothered, like a dragon laying on his gold.
November 28, 2024 at 7:26 PM
My wife and I honeymooned in Highlands NC 30 years ago (plus a few days). We’re here again for a short weekend trip. It’s a pretty little tourist town with nice restaurants and some of the best waterfalls you’ve ever seen.
November 23, 2024 at 11:50 PM
Here are a couple of my favorite pictures. I’m the one hamming it up on the nose of the raft. This is on the Ocoee River from a couple years ago.
November 14, 2024 at 2:19 AM
This was a couple of weeks ago in Cades Cove, GSMNP. We’ve been fortunate to see bears several times this year.
November 10, 2024 at 4:07 PM
Debord falls in Frozen Head State Park from a couple weeks ago vs last fall. Amazing difference! Tennessee has fantastic state parks.
February 20, 2024 at 1:33 AM