Edwin Lyman(@NucSafetyUCS) 's Twitter Profileg
Edwin Lyman

@NucSafetyUCS

I'm the Director of Nuclear Power Safety at the Union of Concerned Scientists in Washington, DC. I work to make nuclear power safer and more secure.

ID:1121774093739667458

calendar_today26-04-2019 13:52:40

5,8K Tweets

3,8K Followers

76 Following

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A troubling development at . Obviously it would be madness for Russia to attempt to restart the plant for power operation.

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The latest IAEA - International Atomic Energy Agency ⚛️ update from : 'At the Rivne NPP, the IAEA team reported that attacks last week on the electrical power infrastructure elsewhere in Ukraine had resulted in instability in the back-up power lines connected to the plant.'
iaea.org/newscenter/pre…

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Trouble at the D.C. Cook-2 ice-condenser reactor in : Operators had to manually scram the unit yesterday at 20 percent power after 'stable steam generator levels were unable to be maintained' as it was being down-powered to repair a turbine leak.

Trouble at the D.C. Cook-2 ice-condenser #nuclear reactor in #Michigan: Operators had to manually scram the unit yesterday at 20 percent power after 'stable steam generator levels were unable to be maintained' as it was being down-powered to repair a turbine leak.
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Members of the NRC Advisory Committee on Reactor Safeguards are now pointing out that the absence of a physical containment in the TerraPower Natrium fast reactor design is a 'significant departure' from previous expert judgment.

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Quote of the day: Responding to a timeline proposed by industry for a 6-month period from selecting a location for a micro reactor to power operation, an NRC staffer pointed out that 'the permitting process to build a house in Montgomery County is longer than this.'

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On May 11 over 100 gallons of water (presumably with some radioactive contamination) from the refueling canal overflowed from the borated water storage tank and spilled on the ground inside the protected area at the One-1 plant. No offsite leakage occurred.

On May 11 over 100 gallons of water (presumably with some radioactive contamination) from the refueling canal overflowed from the borated water storage tank and spilled on the ground inside the protected area at the #Arkansas #Nuclear One-1 plant. No offsite leakage occurred.
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Yesterday the South Project-2 plant scrammed at 15 percent power during testing of the main turbine after an auxiliary transformer locked out. A steam generator relief valve failed to open and an output breaker failed to close, requiring manual intervention.

Yesterday the South #Texas Project-2 #nuclear plant scrammed at 15 percent power during testing of the main turbine after an auxiliary transformer locked out. A steam generator relief valve failed to open and an output breaker failed to close, requiring manual intervention.
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The NRC has found three violations at the Cooper plant in , including two instances of failed equipment due to worker errors during maintenance and a failure to report to the agency a defective component it discovered in 2022.

nrc.gov/docs/ML2412/ML…

The @NRCgov has found three violations at the Cooper #nuclear plant in #Nebraska, including two instances of failed equipment due to worker errors during maintenance and a failure to report to the agency a defective component it discovered in 2022. nrc.gov/docs/ML2412/ML…
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Less than impressive debut for the Oklo-Sam Altman SPAC. Trading was actually halted at one point due to volatility.

financialpost.com/pmn/business-p…

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The NRC found a physical protection violation at the Nuclear Fuel Services fuel plant in Erwin, . I'm never happy to see security violations at facilities that process weapon-usable highly enriched uranium. nrc.gov/docs/ML2412/ML…

The @NRCgov found a physical protection violation at the Nuclear Fuel Services #uranium fuel plant in Erwin, #Tennessee. I'm never happy to see security violations at facilities that process #nuclear weapon-usable highly enriched uranium. nrc.gov/docs/ML2412/ML…
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The NRC has issued a violation to the South Project plant after workers installed gaskets backwards in July 2023 when performing maintenance on the essential chilled water system, rendering it inoperable for nearly 6 months. D'Oh. nrc.gov/docs/ML2412/ML…

The @NRCgov has issued a violation to the South #Texas Project #nuclear plant after workers installed gaskets backwards in July 2023 when performing maintenance on the essential chilled water system, rendering it inoperable for nearly 6 months. D'Oh. nrc.gov/docs/ML2412/ML…
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The November 2023 scram and partial power loss at the Calvert Cliffs-2 plant near was caused by a short circuit due to 'inadequate work practices' by personnel who installed instrument wiring too close to a live bus bar. D'Oh. nrc.gov/docs/ML2412/ML…

The November 2023 scram and partial power loss at the Calvert Cliffs-2 #nuclear plant near #WashingtonDC was caused by a short circuit due to 'inadequate work practices' by personnel who installed instrument wiring too close to a live bus bar. D'Oh. nrc.gov/docs/ML2412/ML…
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It's coming up for debate soon on the House floor. I wonder how many members know the bill opens the door for 100 percent foreign ownership of US facilities by entities (which could be nontransparent shell companies) in any OECD country plus India (except Turkey).

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Looks like someone's weekend plans at the Oconee plant were ruined: On Friday morning security confiscated an alcoholic beverage found in a refrigerator within the protected area.

Looks like someone's weekend plans at the Oconee #nuclear plant were ruined: On Friday morning security confiscated an alcoholic beverage found in a refrigerator within the protected area.
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In response to industry complaints that NRC was spending more billable hours preparing for and documenting the results of plant inspections, agency staff did a review. They found the overall trend in hours spent has actually been decreasing. nrc.gov/docs/ML2412/ML…

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