Jenifer Avellaneda
@nuclearhazelnut.bsky.social
Engineering a better world with nuclear energy ⚛️
A.K.A Nuclear Hazelnut & I’m a PRA & Nuclear Risk Analysis Engineer working at @WECnuclear
Views are my own
A.K.A Nuclear Hazelnut & I’m a PRA & Nuclear Risk Analysis Engineer working at @WECnuclear
Views are my own
Happy 30th to one of the weirdest, most instructive nuclear trips in U.S. history.
Cheers to redundant safety systems, & vigilant ops teams!
Cheers to redundant safety systems, & vigilant ops teams!
May 7, 2025 at 1:17 AM
Happy 30th to one of the weirdest, most instructive nuclear trips in U.S. history.
Cheers to redundant safety systems, & vigilant ops teams!
Cheers to redundant safety systems, & vigilant ops teams!
Why it matters:
This RARE dual-unit trip became a reference case in PRA.
It highlights how wildlife can impact critical infrastructure—& why even the best systems must account for unpredictable environmental factors. 🌿
This RARE dual-unit trip became a reference case in PRA.
It highlights how wildlife can impact critical infrastructure—& why even the best systems must account for unpredictable environmental factors. 🌿
May 7, 2025 at 1:17 AM
Why it matters:
This RARE dual-unit trip became a reference case in PRA.
It highlights how wildlife can impact critical infrastructure—& why even the best systems must account for unpredictable environmental factors. 🌿
This RARE dual-unit trip became a reference case in PRA.
It highlights how wildlife can impact critical infrastructure—& why even the best systems must account for unpredictable environmental factors. 🌿
What happened next:
✔️ Both reactors safely shut down
✔️ No loss of offsite power to safety buses
✔️ EDGs didn’t need to start
✔️ 138kV remained energized
There was no weather involved. Just one bird… with a very bad day 💥
✔️ Both reactors safely shut down
✔️ No loss of offsite power to safety buses
✔️ EDGs didn’t need to start
✔️ 138kV remained energized
There was no weather involved. Just one bird… with a very bad day 💥
May 7, 2025 at 1:17 AM
What happened next:
✔️ Both reactors safely shut down
✔️ No loss of offsite power to safety buses
✔️ EDGs didn’t need to start
✔️ 138kV remained energized
There was no weather involved. Just one bird… with a very bad day 💥
✔️ Both reactors safely shut down
✔️ No loss of offsite power to safety buses
✔️ EDGs didn’t need to start
✔️ 138kV remained energized
There was no weather involved. Just one bird… with a very bad day 💥
At the time, both units were operating at full power. A fault occurred ~4 miles from the plant on one of five 345kV transmission lines.
Neither the primary nor backup relays cleared the fault. As a result, the other 4 lines & both units fed the fault—until everything tripped.
Neither the primary nor backup relays cleared the fault. As a result, the other 4 lines & both units fed the fault—until everything tripped.
May 7, 2025 at 1:17 AM
At the time, both units were operating at full power. A fault occurred ~4 miles from the plant on one of five 345kV transmission lines.
Neither the primary nor backup relays cleared the fault. As a result, the other 4 lines & both units fed the fault—until everything tripped.
Neither the primary nor backup relays cleared the fault. As a result, the other 4 lines & both units fed the fault—until everything tripped.
🚨 Bottom line:
Technically, Germany can bring back nuclear energy production—there are no major technical barriers to restarting recently closed reactors. But it all hinges on political decisions.
Technically, Germany can bring back nuclear energy production—there are no major technical barriers to restarting recently closed reactors. But it all hinges on political decisions.
February 28, 2025 at 1:29 AM
🚨 Bottom line:
Technically, Germany can bring back nuclear energy production—there are no major technical barriers to restarting recently closed reactors. But it all hinges on political decisions.
Technically, Germany can bring back nuclear energy production—there are no major technical barriers to restarting recently closed reactors. But it all hinges on political decisions.
📊 Public opinion?
•67% of Germans support nuclear energy.
•Rising energy demand & even the planned reopening of Three Mile Island in the U.S. suggest global momentum for nuclear restarts!
•67% of Germans support nuclear energy.
•Rising energy demand & even the planned reopening of Three Mile Island in the U.S. suggest global momentum for nuclear restarts!
February 28, 2025 at 1:29 AM
📊 Public opinion?
•67% of Germans support nuclear energy.
•Rising energy demand & even the planned reopening of Three Mile Island in the U.S. suggest global momentum for nuclear restarts!
•67% of Germans support nuclear energy.
•Rising energy demand & even the planned reopening of Three Mile Island in the U.S. suggest global momentum for nuclear restarts!
💰 The economic case for nuclear:
•Restarting these plants could generate over €100B in taxable profits over 20 years.
•Germany’s electricity imports surged to 25 TWh by late 2024, while the economy shrank 0.3% in 2023 and further decline another 0.2% in 2024.
•Restarting these plants could generate over €100B in taxable profits over 20 years.
•Germany’s electricity imports surged to 25 TWh by late 2024, while the economy shrank 0.3% in 2023 and further decline another 0.2% in 2024.
February 28, 2025 at 1:29 AM
💰 The economic case for nuclear:
•Restarting these plants could generate over €100B in taxable profits over 20 years.
•Germany’s electricity imports surged to 25 TWh by late 2024, while the economy shrank 0.3% in 2023 and further decline another 0.2% in 2024.
•Restarting these plants could generate over €100B in taxable profits over 20 years.
•Germany’s electricity imports surged to 25 TWh by late 2024, while the economy shrank 0.3% in 2023 and further decline another 0.2% in 2024.
👉 What is this timeline based on?
•These projections assume a halt to dismantling by mid-2025 & a rapid mobilization of resources.
•Brokdorf, Emsland, & Grohnde were among the last reactors shut down & require the least effort to restart.
•Additional reactors could take longer.
•These projections assume a halt to dismantling by mid-2025 & a rapid mobilization of resources.
•Brokdorf, Emsland, & Grohnde were among the last reactors shut down & require the least effort to restart.
•Additional reactors could take longer.
February 28, 2025 at 1:29 AM
👉 What is this timeline based on?
•These projections assume a halt to dismantling by mid-2025 & a rapid mobilization of resources.
•Brokdorf, Emsland, & Grohnde were among the last reactors shut down & require the least effort to restart.
•Additional reactors could take longer.
•These projections assume a halt to dismantling by mid-2025 & a rapid mobilization of resources.
•Brokdorf, Emsland, & Grohnde were among the last reactors shut down & require the least effort to restart.
•Additional reactors could take longer.
A pleasure to connect!! ⚛️🤩
November 22, 2024 at 6:04 PM
A pleasure to connect!! ⚛️🤩
https://www.latimes.com/environment/story/2024-11-18/a-new-generation-finds-promise-in-nuclear-energy
t.co
November 20, 2024 at 5:34 PM