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Solar heating

Renew Extra 2nd May 2020, Dave Elliott: Solar power prospects are looking good, but for solar heat as
well as solar electricity. It is clear than solar photovoltaic power generation is booming around the world, with over 580 GW of PV solar installed by the end of 2019, and much more expected, but it’s worth noting that there is also a large amount of direct solar heating system capacity in use (470 GW thermal), and that too is also growing.
Most of this capacity is in the form of standard roof-top solar heat collectors, with China in the lead (330 GWth), but large community-scaled solar heating arrays have been developed in Europe and elsewhere, some of them linked to
large inter-seasonal heat stores, allowing summer heat to be used for winter warming via local district heating networks.
Denmark has been a leader in this field, with its flagship 13.5 MW Marstal project and many others. The heat stores typically involve large lined pits with floating insulating covers for heat retention. In most cases, the solar input
augments heat supplied by other means, including from biomass combustion, but new approaches are being adopted which enhance the solar and bioenergy input using large heat pumps. Although (fossil) gas fired heating still often has the edge, solar heating with heat stores can be competitive with other heating sources if district heating networks already exists, as they do in Denmark. And of course the carbon emissions associated with using
fossil gas are then avoided.https://renewextraweekly.blogspot.com/2020/05/solar-heats-up.html

May 3, 2020 Posted by | 2 WORLD, renewable | Leave a comment

The pandemic poses a danger that is unique to the nuclear industry

The Hidden Nuclear Risk of the Pandemic The coronavirus crisis highlights the resilience problem of civilian nuclear power plants.   https://thebulwark.com/the-hidden-nuclear-risk-of-the-pandemic/  by VICTOR GILINSKY AND HENRY SOKOLSKI APRIL 27, 2020 

The coronavirus crisis has revealed a significant Achilles’ heel in civilian nuclear power: The plants can’t operate if their relatively few highly skilled operators get sick or become contagious and have to be quarantined, a situation that, according to news reports, some plants are getting close to. That puts a dent in nuclear-industry assertions that its plants provide a level of protection against natural events far beyond that of most other electricity suppliers.

The chief problem is one of public safety. Unlike other types of electric-generating plants, nuclear plants need operators to remain in control even after they are shut down because their radioactive uranium fuel cores, typically about 100 tons, continue to generate large amounts of heat. If the heat is not removed by cooling water, it can melt the core. During the 1979 Three Mile Island accident in Pennsylvania, over half the inadequately cooled core melted in hours.

In recent weeks, several vital institutions—police forces, food-processing plants, the U.S. Postal Service, not to mention health care providers—have reportedly been strained as personnel have become sick with COVID-19. As the pandemic spreads, it could create a problem for the smooth functioning of nuclear plants, as well. Just operating in safe shutdown state could be challenging. The details differ from plant to plant and are spelled out in technical specifications that are part of each plant’s federal license, but generally it takes a supervisor and several operators to man the control room and some number of maintenance staff. Altogether, counting all shifts, there may be a couple of dozen operators per plant. That doesn’t sound like much, but these are highly skilled personnel who are licensed to operate an individual plant. You can’t just pull in operators from elsewhere. If the licensed operators are unavailable because of disease or medical concerns, you are out of luck.

The operators would surely not abandon their plant so long as they could remain at their posts, but having a skeleton crew of sick and fatigued individuals operating a nuclear plant is, to say the least, not a desirable state of affairs.
A similar concern applies to the government safety regulators. At the Seabrook plant in New Hampshire, the Nuclear Regulatory Commission inspectors are doing most of their inspections over the phone from home. As one citizen oversight group remarked, while “understandable, it’s still a bit unsettling, considering we are talking about nuclear power.” A COVID-19-related notice on the NRC website states the commission “will require plants to shut down if they cannot appropriately staff their facilities,” but during a March 20 teleconference the NRC representative assured the industry that the agency was prepared to issue blanket exemptions from license requirements.
Operating a plant at power takes a lot more staff than maintaining it in safe shutdown state. Nuclear plant managements around the world have been forced to consider the consequences of coronavirus infections and the need to quarantine employees who have been in contact with infected people. The conclusions are stark. According to a Reuters report, EDF, the utility that runs all the nuclear plants in France, said its plants “could operate for three months with a 25% reduction in staffing levels and for two to three weeks with 40% fewer staff.” At one plant in the north of France, Flamanville, EDF announced it was reducing the staff at the plant from 800 to 100, keeping only those “in charge of safety and security.” There are reports that U.S. nuclear plants may ask essential staff to live on-site if the pandemic worsens, and plants have stockpiled bedding and ready-to-eat meals.
During this emergency, nuclear plant managers are doing their best to keep the lights on and the public safe. But the pandemic exposes a vulnerability of the nuclear plants that we will have to take account of in future decisions. One thing is clear: The picture painted by the trade association for the nuclear industry, the Nuclear Energy Institute, of the essential invulnerability of nuclear plants is not correct.

The Nuclear Energy Institute also argues that by contributing reliable power to military installations, nuclear energy “supports the nation’s ability to defend itself.” Yet here we have a type of emergency—involving a possible lack of operating staff—in which the nuclear plants could become a serious liability rather than an asset.

Nuclear plants are not without their advantages. But they also come with serious disadvantages, one of which—the safety imperative for constant, highly trained staffing no matter what—has become evident during the current pandemic. They are an inflexible source of energy that carries an enormous overhead in terms of safety and security, when what we need in our energy system for dealing with inevitable emergencies is not rigidity, but resilience.

May 2, 2020 Posted by | 2 WORLD, health, safety | Leave a comment

UK ignored warnings about pandemic danger, cut health funding, spent up big on nuclear weapons

May 2, 2020 Posted by | health, safety, UK, weapons and war | 1 Comment

Report warns on the threat of sea level rise to Sizewell nuclear plan

Sea level rise ‘could threaten nuclear power station’ planned for UK, report claims, Independent UK, EDF about to submit planning application for major development at Sizewell on Suffolk coast, Harry Cockburn, 1 May 20

Rising sea levels and coastal erosion could pose a threat to two nuclear reactors planned to be built on the low-lying Suffolk coast, according to local councils and analysis by an independent environmental group.

East Suffolk Council and Suffolk County Council have already lodged various concerns about French company EDF Energy’s plans for the new facilities at Sizewell C, and a new analysis by experts at the Nuclear Consulting Group suggests planned sea defences may be inadequate in future climate change scenarios.

EDF is reportedly about to submit its official planning application for the project, and has been working with Chinese state-owned nuclear company.

The Nuclear Consulting Group’s paper, written by structural engineer, Nick Scarr, suggests the Suffolk coast where the Sizewell development is planned, is inherently “unstable”, and that due to erosion by the sea the site could become an island before the station reaches the end of its active life, thereby risking a serious accident. Mr Scarr told the Climate News Network:

“Any sailor, or lifeboat crew, knows that east coast banks need respect — they have dynamic patterns, and even the latest charts cannot be accurate for long. “I was deeply concerned by EDF’s premise that there is micro-stability at the Sizewell site, which makes it suitable for new-build nuclear. It is true if you restrict analysis to recent historical
data, but it is false if you look at longer-term data and evidence-based climate science predictions…….. (subscribers only) https://www.independent.co.uk/independentpremium/nuclear-power-sea-rise-sizewell-c-edf-suffolk-a9492901.html

May 2, 2020 Posted by | climate change, UK | Leave a comment

USA’s complicated and contradictory plan to punish Iran

May 2, 2020 Posted by | Iran, politics international, USA | Leave a comment

Hole in the ozone layer is now closed

Record Arctic ozone hole now closed: UN  https://www.heraldsun.com.au/news/breaking-news/record-arctic-ozone-hole-now-closed-un/news-story/b0d4c72a9befb02c7ebc4ccc2e91a6c1

Reuters

May 2, 2020 Ozone depletion over the Arctic hit a “record level” in March, the biggest since 2011, but the hole has now closed, the UN World Meteorological Organisation (WMO) says.

The springtime phenomenon in the northern hemisphere was driven by ozone-depleting substances still in the atmosphere and a very cold winter in the stratosphere, WMO spokeswoman Clare Nullis told a UN briefing in Geneva.

“These two factors combined to give a very high level of depletion which was worse than we saw in 2011. It’s now back to normal again … the ozone hole has closed,” she said on Friday.

Nullis, asked whether less pollution during the pandemic had played a role, said: “It was completely unrelated to COVID.”

May 2, 2020 Posted by | 2 WORLD, environment | Leave a comment

Netanyahu’s deceitful push to try to get USA to attack Iran

May 2, 2020 Posted by | Iran, Israel, secrets,lies and civil liberties | Leave a comment

Hundreds of foreign companies procuring nuclear materials for India and Pakistan

May 1, 2020 Posted by | India, Pakistan, secrets,lies and civil liberties | Leave a comment

An Arctic island is warming SIX times faster than the global average

May 1, 2020 Posted by | ARCTIC, climate change | Leave a comment

To store surplus plutonium, USA’s Waste Isolation Pilot Plant will have to be enlarged

May 1, 2020 Posted by | - plutonium, USA | Leave a comment

Nuclear reactor pressure vessel to be shipped by rail to Utah, from Sanonofre

After decades, the heart of a nuclear reactor will finally leave San Onofre    https://www.ocregister.com/2020/04/30/after-decades-the-heart-of-a-nuclear-reactor-will-finally-leave-san-onofre/  

The reactor pressure vessel for Unit 1, the first of three reactors on site, will get a permanent home in Utah, By TERI SFORZA | tsforza@scng.com | Orange County Register, May 1, 2020   The original plan, nearly 20 years ago, was to plop the retired nuclear reactor pressure vessel on a barge and ship it off — via the Panama Canal or all the way around the tip of South America — to a final resting place in South Carolina.But there were strong objections to transporting the huge metal shell that way. After all, atoms had actually been split inside it. And so the giant, but empty, heart of San Onofre Nuclear Generating Station’s Unit 1 was packed away in a huge steel cylinder in 2002. The cylinder was filled with grout for shielding against radiation. It was sealed, and has been stored at the plant ever since.

Now — as serious tear-down work gets under way on Units 2 and 3 — the heart of long-ago-dismantled Unit 1 is finally slated to leave San Onofre forever.

Operator Southern California Edison is preparing to ship Unit 1’s reactor pressure vessel to a licensed disposal facility in Clive, Utah, which is owned by Energy Solutions, one of San Onofre’s decommissioning contractors. It will have company: San Onofre’s retired steam generators were shipped to Clive in 2012.

Though officials can’t get too specific on precisely when or how the vessel will go — for safety reasons — they’ve been preparing a rail spur to haul heavy components off site.

The reactor vessel is considered low-level waste, the least hazardous of the Nuclear Regulatory Commission’s radioactive waste classifications. Contaminated cleaning supplies, used disposable protective clothing and reactor parts are other examples of low-level waste.

How can the crucible for nuclear reactions be low-level waste? The most radioactive parts within it were removed, cut up, and stored with higher-level waste on site, said John Dobken, a spokesman for Edison. What’s left is Cobalt-60, which has a half-life of about five years.

Unit 1 was retired in 1992, and the reactor vessel has been packaged for 18 years, so it has gone through about five half-lives, reducing its radioactivity, Dobken said.The contact dose rate for the vessel package is less than 0.1 millirem an hour, which is 500 times below the Department of Transportation limit for these types of shipments, Edison said in a primer on the move. For comparison, a chest X-ray provides a dose of 10 millirem.

Since this is low-level waste, it was never part of Edison’s contract with the federal government requiring the U.S. Department of Energy to haul away high-level waste by 1998 in exchange for payments into the Nuclear Waste Fund.

The federal government’s paralysis on finding a permanent home for the nation’s high-level nuclear waste is why 40 years’ worth of it remains stuck on site, generating sharp controversy.

While critics have called on Edison to cease decommissioning work at San Onofre during the lock-down, it proceeds with “pandemic protocols” in place, Dobken said. Everyone on site must wear a mask and practice social distancing.

———————————–

By the numbers: The package weighs 770 tons, or more than 1.5 million pounds. Inside is the Unit 1 reactor pressure vessel, pieces of radioactive metal and grout for radiation shielding. It’s a 2-inch-thick carbon steel cylindrical canister with a 3-inch-thick carbon steel liner; top and bottom plates are 3 inches thick. The canister is 38.5 feet long and 15.5 feet in diameter.

May 1, 2020 Posted by | decommission reactor, USA | Leave a comment

Coronavirus a big threat to Russia’s secret nuclear cities, as virus incidence rises

Concern as coronavirus threatens Russia’s closed ‘nuclear cities’ https://www.theguardian.com/world/2020/apr/28/concern-as-coronavirus-threatens-russias-closed-nuclear-cities  

Rosatom nuclear chief warns of ‘particularly alarming situation’ in three areas as country reports biggest daily rise in cases, Reuters in Moscow 29 Apr 2020

Alexei Likhachev, Rosatom chief, said the pandemic ‘creates a direct threat’ to Russia’s nuclear cities.

The head of Russia’s state-run nuclear corporation has expressed concern about the spread of the new coronavirus to three “nuclear cities”, including one that houses a top-secret research institute that helped develop the Soviet atomic bomb.

The cities are closely linked to Russia’s nuclear industry, which is managed by the Rosatom corporation. Several are closed to foreigners and Russians require special clearance to enter them as facilities located there are closely guarded secrets.

Rosatom chief Alexei Likhachev said special deliveries of ventilators and personal protection equipment (PPE) were being sent to the closed town of Sarov, east of Moscow, and other towns where dozens of cases of the virus have been registered.

“This [pandemic] creates a direct threat to our nuclear towns. The situation in Sarov, Elektrostal [and] Desnogorsk is today particularly alarming,” he said in an online speech to Russia’s nuclear industry workers.

“The situation in Sarov is exacerbated by an outbreak of the illness in the nearby Diveyevo monastery,” he said, without elaborating further.

Likhachev made his remarks on a day when Russia reported its biggest daily rise in new coronavirus cases. Russia now ranks eighth worldwide with 93,558 confirmed cases, though its death toll of 867 is still far below that of many other countries.

Moscow, which accounts for more than half of Russia’s cases, and many other regions have imposed stay-at-home orders to curb the spread of the virus.

Sarov, which was so secret that it did not appear on maps until the breakup of the Soviet Union in 1991, remains an important part of Russia’s nuclear military complex, defence experts say.

It is home to a research institute that gained prominence last year when five of its scientists died in a mysterious accident at a military testing site in the far north.

Rosatom said the incident had occurred during a rocket engine test on a sea platform. Some US experts said they suspected it had been a botched test of a new missile vaunted by the president, Vladimir Putin.

Last week, Rosatom said seven people at Sarov’s All-Russian Scientific Research Institute of Experimental Physics had been diagnosed with coronavirus, bringing the total number of cases in the city – which has a population of about 95,000 – to 23.

It said the outbreak in Sarov had begun when a retired couple returned to the city from a Russian holiday resort and that more than 100 people had since been isolated to stop it spreading further.

April 30, 2020 Posted by | health, Russia, safety | 1 Comment

The pandemic is showing us how our trashed world can heal

I think the birds are enjoying this,” wrote a New York City bookseller in response to an online order I’d placed for a new field guide to songbirds. “In NYC we can hear them better than ever.”

But it’s not just that our ears are tuned, in the new silence, to the sounds of birds that have always shared our world. Coyotes now wander the sidewalks of San Francisco and the streets of Chicago; Great Orme Kashmiri goats forage in the town of Llandudno, Wales; a groundhog snarfs pizza right outside a window in Philadelphia; a mountain lion jaywalks in San Mateo; wild boars root in the medians of Barcelona; a red fox saunters across a driveway in Nashville.

This pandemic has overlapped with the annual spring songbird migration, so it’s possible that people are seeing birds that truly weren’t there before we all went into lockdown. But in general it’s not true that the wild animals we’re seeing from our windows have become more plentiful in our absence. They are simply making themselves more visible to us now that we have become less visible to them.

And like a little boy trapped in school during the tender green springtime, we are peering at them through windows we have hitherto hardly bothered to wipe. We are paying attention.
The coronavirus will not reverse the ravages of climate change, and it will not interrupt our progression toward an even more desperate future. But it is allowing us to see with our own eyes how ready the natural world stands to reclaim the planet we have trashed, how eagerly and how swiftly it will rebound if we give it a chance. We are seeing how clear the waters of Venice can become in the absence of motorboats, how clear the air of New Delhi can become in the absence of cars.

The pandemic is teaching us that all is not yet lost.

None of these changes will last — the human race cannot stay cooped up indoors forever — but while we have both the time to observe and the window perch to watch from, we can use this cultural moment to rethink our relationship to wildness. We can ponder what it truly means to share the planet. We can resolve to change our lives.…..

And so our first task when we emerge from this isolation will be to remember. To sear into our memories that pure pageantry of wildness, of life in its most insistent persisting. And then to try in every possible way to save it.  https://www.nytimes.com/2020/04/27/opinion/coronavirus-shutdown-environment.html

April 30, 2020 Posted by | 2 WORLD, environment, health | Leave a comment

Offshore wind is General Electric’s great opportunity, not dodgy Small Nuclear Reactors

GE Power Plays: Wind Might Blow Coal, Gas And Nuclear Away, Seeking Alpha,  Apr. 29, 2020 Keith Williams
Summary

GE offshore wind: massive offshore turbine Haliade-X 12MW looks like a winner.

GE-Hitachi Nuclear Energy may be a receding opportunity.

GE might sell its steam power business and rationalise its fossil fuel interests.

The power and renewables businesses are important in considering investment in GE.

………. Nuclear Small Modular Reactors : GE-Hitachi BWRX-300

There is a lot of talk in the nuclear industry and also in political circles from groups who are opposed to solar PV and wind developments, yet who acknowledge the need for low emissions technologies. The World Nuclear Association (WNA) has an excellent summary of many proposed developments in the area of Small Modular Nuclear Reactors (SMRs). The list of projects is long but many (most) seem to be struggling. A key point from the WNA report is the following : “Licensing is potentially a challenge for SMRs, as design certification, construction and operation licence costs are not necessarily less than for large reactors.” This is a huge red flag for any SMR project.

A second objection is cost of nuclear power versus solar PV/wind plus storage. There is a lot of information about these relative costs, including well into the future. I am not aware of any studies that suggest that any nuclear technology will be able to compete with renewables and storage on price. A recent study (December 2019) by the Australian Energy Market Operator (AEMO) and CSIRO concluded that SMR nuclear reactors will generate power costing ~8x that of rooftop or solar PV and wind, with solar and wind costs of power generation being similar. 

……. With Small Modular Reactors the poster child of nuclear power supporters, it is clear that there is a lot riding on this potential saviour for the nuclear industry after Fukushima and recent delays and cost blowouts in the European (especially UK, French and Finnish) nuclear industries.

With current focus on emissions reductions and the climate emergency, this is an excellent time for low emissions technologies. However, the need is now and renewables (solar PV and wind) plus storage (pumped hydro and batteries) are making a lot of progress in addressing the needs. My question is whether the cost structure and long lead times mean that nuclear technology is too expensive and late to play a part.

A recent summary of the current state of the nuclear industry as a whole is depressing reading for someone who is enthusiastic about the nuclear industry’s prospects. A lot has to happen in the next decade and SMR technology isn’t ready yet. Is GE investing a lot in a technology that can’t compete with the dramatic advances in solar PV, wind and battery storage?……

GE’s adventures in nuclear developments seem like the kind of speculative play GE could happily fund when it was one of the world’s biggest and most powerful engineering companies. It doesn’t have that status anymore and my take is that it needs to cut its cloth and focus on projects that will have more immediate commercial outcomes. Of course, that is asking for a big rethink about how GE sees itself, but does it really have a choice if it wants to survive?

Offshore wind business

While there is some apprehension in the wind industry, especially in the US and China, as changes in regulations come into force next year, and 2020 has been messed up by COVID-19, there is a long-term future for wind power; offshore wind prospects look huge………

GE Renewable Energy is a major wind turbine supplier, with more than 42,000 of its turbines (mostly onshore) installed. Its role in the wind industry is extensive, from manufacture, digital optimization, operations and maintenance. Its onshore turbines range in size from 1MW to 5MW. GE installed ~50% of onshore turbines in the US last year, a 40% increase compared with the number of onshore turbines it installed in the US in 2018.

The offshore market is still emerging, with turbines substantially bigger than those used onshore. ….. The area that looks to me as if it could become a big winner is in offshore wind turbine developments, ….

A lot of investors have GE in their portfolios and a lot more are probably reflecting on whether GE might once again become a secure safe-haven investment. My biggest issue with GE is that it seems to me it is yet to understand that it is no longer the huge and dominant business that can afford to make big bets that burn a lot of cash. The current SMR nuclear programs in GE seem to be in this category. They have a very low chance of success but require major resources. I’d prefer not to have these distractions in a company I invest in….. https://seekingalpha.com/article/4340805-ge-power-plays-wind-might-blow-coal-gas-and-nuclear-away

April 30, 2020 Posted by | business and costs, renewable, USA | Leave a comment

Climate change: lakes and rivers will become drier, increasingly infectious and toxic

Climate change: lakes and rivers will become drier, increasingly infectious and toxic, Stuff NZ, Olivia Wannan, Apr 30 2020  

By dragging our feet on climate action, we increasingly condemn our beloved lakes and rivers to a future of salmonella contamination, algal blooms, species extinctions and drying out, a new report warns.

Our Freshwater 2020, produced by the Ministry for the Environment and Statistics NZ, is a stark reminder that the already-threatened health of our waterways rests on our ability to urgently shift away from fossil fuels.

Even if emissions stay at historically low levels, temperatures will continue to rise in the coming decades, due to the lag between releasing greenhouse gas and the effects on our atmosphere, seas and waterways.

As the climate warms, rain storms will intensify, snowfall will decrease, glaciers will melt, soils will dry out and the sea level will rise – each affecting our lakes and rivers.

In the east, regions such as Hawke’s Bay will see increasingly low waterways by the end of the century, says Ministry for the Environment departmental science advisor Dr Alison Collins.

In the west – particularly in the South Island – rivers and lake levels are expected to rise, potentially leading to flooding.

After extreme downpours, drinking water and swimming spots are at high risk of being contaminated with infectious tummy bugs such as salmonella and harmful strains of E.coli, she says. Northern and remote eastern communities with less-developed water supply systems are particularly vulnerable.

Toxic algal blooms will become more common, as warmer temperatures reduce the mixing between upper and lower levels of deep lakes, boosting nutrient levels at the surface and algal growth. Without the waters mixing, the lake bottom is also deprived of oxygen, which drives out animals such as crayfish (kōura) and mussels (kākahi).

Combined with pollution and habitat loss, climate change is likely to push some freshwater species – both native and introduced – to extinction, the report says. …… https://www.stuff.co.nz/environment/climate-news/121178883/climate-change-lakes-and-rivers-will-become-drier-increasingly-infectious-and-toxic

April 30, 2020 Posted by | climate change, New Zealand | Leave a comment