— EWG: PG&E reports nuclear reactor welding leak at Diablo Canyon facility

From Environmental Working Group

January 5, 2023

PG&E reports nuclear reactor welding leak at Diablo Canyon facility

EWG: Critical questions about coolant system damage go unanswered

SAN FRANCISCO – Pacific Gas & Electric found damage to part of a reactor cooling system at the aging Diablo Canyon nuclear plant in California, but it hasn’t yet answered key questions about the extent of the problem.

PG&E is the owner of the state’s last remaining nuclear power plant, and found the fault with the reactor coolant system during a routine inspection in October. PG&E detailed the damage in a report[1] to the Nuclear Regulatory Commission, or NRC, in December.

The power company says the system had a crack in the welding of the wall of Diablo Canyon’s Unit 2 reactor, which was shut down for refueling. PG&E says the presumed cause was fatigue, which was caused by vibrations at the facility indicating a weld defect. The utility says the damage meant the unit fell short of NRC operating requirements.

PG&E says it repaired the leak, and the public and plant workers were never at risk. But the utility’s filing with the commission raises several questions, including:

  • When was the affected weld last inspected?
  • When does PG&E believe the crack in the weld formed?
  • Why had the weld flaw not been identified?
  • What was the size of the leak when it occurred?  

“The communities near Diablo Canyon deserve to know the full details of the incident, how it happened, why it wasn’t discovered earlier and how long it took for PG&E to identify the damage to the reactor coolant system,” said Environmental Working Group President and California resident Ken Cook

“The main reason for shuttering this aging facility is the potential threat it poses to the public – and PG&E’s overall safety record across its vast service area in the state is among the worst of any power company in the country,” Cook said.

Diablo Canyon’s latest problem highlights ongoing concerns about the stability of the facility and shows why EWG and others are pushing to shut the plant down. 

Yet state and federal officials are trying to keep the aging facility operating beyond 2025, when it’s slated to shutter under the terms of a settlement carefully negotiated between PG&E, California and environmentalists.

Last September, at the urging of California Gov. Gavin Newsom, the state legislature approved Senate Bill 846, a law that will keep the plant operating for five more years, until 2030. It will also give PG&E a $1.4 billion loan to cover costs during that extra time.

In November, the Biden administration announced it will give PG&E more than $1 billion in federal funding to keep the plant operating past its scheduled 2025 closure date.

PG&E has also petitioned the NRC to fast-track its October 31 request to extend the license of the twin Diablo Canyon reactors. Four environmental organizations, led by San Luis Obispo-based Mothers for Peace, or SLOMFP, have sent letters to the NRC warning it would violate federal law if it accepts the proposal. The other groups that signed the letters are EWG, Friends of the Earth and Committee to Bridge the Gap.

“PG&E cannot have it both ways,” claimed SLOMFP Board President Jane Swanson. “PG&E stopped preparing the reactors for continued operation in 2016 and voided their license renewal. The company has spent the past six years preparing to mothball the reactors and has saved money by not investing in future operations. It is too late to get a license renewal before the plant must shut down.”

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The Environmental Working Group (EWG) is a nonprofit, non-partisan organization that empowers people to live healthier lives in a healthier environment. Through research, advocacy, and unique education tools, EWG drives consumer choice and civic action.

https://www.ewg.org/news-insights/news-release/2023/01/pge-reports-nuclear-reactor-welding-leak-diablo-canyon-facility

[1] nrc[dot]gov/docs/ML2235/ML22355A081.pdf

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— COVID-19 pandemic increases nuclear reactor disaster risk; NRC loosens rules, requires long shifts

Posted on BuzzFeed

Terrified Atomic Workers Warn That the COVID-19 Pandemic May Threaten Nuclear Reactor Disaster

April 9, 2020

By Harvey Wasserman

The COVID Pandemic has thrown America’s atomic reactor industry into lethal chaos, making a major disaster even more likely.  Reports from “terrified” workers at a Pennsylvania reactor indicate vital precautions needed to protect them may not even be possible.

Nationwide, with falling demand and soaring prices for nuke-generated electricity, the Pandemic casts a dark shadow over reactor operations and whether frightened neighbors will allow them to be refueled and repaired.

America’s 96 remaining atomic reactors are run by a coveted pool of skilled technicians who manage the control rooms, conduct repairs, load/unload nuclear fuel.

Because few young students have been entering the field, the corps of about 100,000 licensed technicians has been—-like the reactors themselves—-rapidly aging while declining in numbers.  Work has stopped at the last two US reactors under construction (at Vogtle, Georgia) due to the Pandemic’s impact, which includes a shrinking supply of healthy workers.

Every reactor control room requires five operators at all times.  But the physical space is limited there and in plant hot spots that need frequent, often demanding repairs.  Social distancing is virtually impossible.  Long shifts in confined spaces undermine operator safety and performance.

Of critical importance:  every 18-24 months each reactor must shut for refueling and repairs.  Itinerant crews of 1000 to 1500 technicians travel to 58 sites in 29 states, usually staying 30-60 days.  They often board with local families, or in RVs, hotels, or Air B&Bs. 

Some 54 reactors have been scheduled for refuel/repairs in 2020. But there is no official, organized program to test the workers for the Coronavirus as they move around the country.

As the Pandemic thins the workforce, older operators are being called out of retirement.  The Trump-run Nuclear Regulatory Commission recently certified  16-hour work days, 86-hour work weeks and up to 14 consecutive days with 12-hour shifts.

Long-time nuclear engineer Arnie Gundersen warns of fatigued operators falling asleep on the job.  He recalls at least one exhausted worker falling into the highly radioactive pool surrounding the high-level fuel rods.  Operator fatigue also helped cause the 1979 melt-down that destroyed Pennsylvania’s Three Mile Island Unit Two.

The industry is now using the Coronavirus Pandemic to rush through a wide range of deregulation demandsAmong them is a move to allow radioactive waste to be dumped into municipal landfills. 

The NRC may also certify skipping vital repairs, escalating the likelihood of major breakdowns and melt-downs.  Nearly all US reactors were designed and built in the pre-digital age, more than 30 years ago.  Most are in advanced decay.  Atomic expert David Lochbaum, formerly with the NRC, warns that failure risks from longer work hours and deferred repairs could be extremely significant, and could vary from reactor to reactor depending on their age and condition.

The industry has also been required to maintain credible public health response plans should those reactors blow.  But Pandemic-stricken US hospitals now have zero spare capacity, multiplying the possible human fallout from an increasingly likely disaster.

Industry-wide the Pandemic has brought working conditions to the brink of collapse.  At Pennsylvania’s Limerick Generating Station, workers say they are “terrified” that the plant has become a “breeding ground…a complete cesspool” for the Coronavirus.  “I’m in a constant state of paranoia,” one technician told Carl Hessler, Jr., of MontcoCourtNews.

Others say social distancing is non-existent, with “no less than 100 people in the training room” and “people literally sitting on top of each other…sitting at every computer elbow to elbow.”  Shift change rooms, Hessler was told, can be    “standing room only.”  At least two Limerick workers are confirmed to have carried the virus.  COVID rates in the county are soaring.

Nuclear engineer Gundersen warns that limited control room floorspace and cramped conditions for maintenance can make social distancing impossible.  “Some component repairs can involve five workers working right next to each other,” he says.

Because reactor-driven electricity is not vital amidst this pandemic downturn, the demand for atomic workers to “stay home” is certain to escalate.  “I am concerned with Exelon & Limerick Nuclear Generating Station’s handling of the scheduled refueling—which has required bringing in workers from across the country during this pandemic,” says US Rep. Madeleine Dean in a statement likely to be repeated at reactor sites around the US.

“The potential increase of COVID-19 cases from 1,400 new workers not observing social distancing is staggering,” says epidemiologist Joseph Mangano of the Radiation and Health Project.  “The Limerick plant should be shut until the COVID-19 pandemic is over.”

Indian Point Unit One, north of New York City, will shut permanently on April 28.  Iowa’s Duane Arnold will close in December.

But Ground Zero may be Pacific Gas & Electric’s two 35-year-old reactors at Diablo Canyon.  PG&E is bankrupt for the second time in two decades, and recently pleaded guilty to 85 felonies from the fires its faulty wires sent raging through northern California, killing 84 people.  In 2010 a faulty PG&E gas line exploded in San Bruno, killing eight people.

Surrounded by earthquake faults, Diablo’s construction prompted more than 10,000 civil disobedience arrests, the most at any US reactor.  PG&E now admits its two Diablo nukes will lose more than $1.2 billion this year, more than $3.44 million/day.

Amidst its bitterly contested bankruptcy, PG&E may be taken over by the state.  But more than a thousand workers are slated in early October to refuel and repair Unit One, which the NRC says is dangerously embrittled.

Whether local residents concerned about both a nuclear accident and the spread of the Coronavirus will let them into the county remains to be seen.  So is whether they’ll be still operating by then.

With the future of the nuclear industry at stake—-along with the possibility of more reactor mishaps—-the whole world will be watching.

Harvey Wasserman’s Solartopia!  Our Green-Powered Earth is at www.solartopia.org, along with The People’s Spiral of US History.  His California Solartopia Show is broadcast at KPFK/Pacifica 90.7fm Los Angeles; his Green Power & Wellness Show is podcast at prn.fm.  For a full one-hour expert podcast discussion of the impact of the Cornoavirus on nuke power, click here.

https://buzzflash.com/articles/terfied-atomic-workers-warn-that-the-covid-19-pandemic-may-threaten-nuclear-reactor-disaster

Posted under Fair Use Rules.