Fundamentally, each stage of forging iron revolves around a basic cycle: by heating the metal, the smith makes it soft enough to work (that is, hammer into shape). Technically, it is possible to shape relatively thin masses of iron by hammering when cold (this is called cold-working) but in contrast to other metals (tin, copper and bronze all come to mind) nearly all serious iron-working was done “hot”. In smithing terminology, each of these cycles is referred to as a “heat” – the more heats a given project requires, the more fuel it is going to consume, the longer and more expensive it is going to be (but a skilled smith can often finish the work in fewer heats than an unskilled smith).
A modern blacksmith can gauge the temperature of a metal using sophisticated modern thermometers, but pre-modern smiths had no recourse to such things (and most traditional smiths I’ve met don’t use them anyway). Instead, the temperature of the metal is gauged by looking at its color: as things get hotter, they glow from brown to dark red through to a light red into yellow and then finally white. For iron heated in a forge, a blacksmith can control the temperature of the forge’s fire by controlling the air-input through the bellows (pushing in more air means more combustion, which means more heat, but also more fuel consumed). As we’ve seen, charcoal (and we will need to use charcoal, not wood, to hit the necessary heat required), while not cripplingly expensive, was not trivial to produce either. A skilled smith is thus going to try to do the work in as few heats as possible and not excessively hot either (there are, in fact, other reasons to avoid excessive heats, this is just one).
Once hot the metal can be shaped by hammering. The thickness of a bar of metal could be thickened by upsetting (heating the center of the bar and them hammering down on it like a nail to compress the center, causing it to thicken) or thinned by drawing (hammering out the metal to create a longer, thinner shape). If the required shape needed the metal to be bent it could be heated and bent either over the side of the anvil or against a tool; many anvils had (and still have) a notch in the back where such a tool could be fitted. A good example of this kind of thing would be hammering out a sheet of iron over a dome-shape to create the bowl of a helmet (a task known as “raising” or “sinking” depending on precisely how it is done). A mass of iron can also be divided by heating it at the intended cutting point and then using a hammer and chisel to cut through the hot, soft metal.
But for understanding the entire process, the most important of these operations is the fire weld. Much like bloomery furnaces, the forges available to pre-modern blacksmiths could not reach the temperatures necessary to melt or cast iron, but it was necessary to be able to join smaller bits of iron into larger ones which was done through a fire weld (sometimes called a forge weld). In this process, the iron is heated very hot, typically to a “yellow” or “white” heat (around 1100 °C). The temperature range for the operation is quite precise: too cold and the iron will not weld, too hot and it will “burn” making the weld brittle. Once at the right temperature, the two pieces of iron are put next to each other and hammered into each other with heavy blows. If done properly, the two pieces of metal join completely, leaving a weld that is as strong as every other part of the bar.
Bret Devereaux, “Collections: Iron, How Did They Make It, Part III: Hammer-time”, A Collection of Unmitigated Pedantry, 2020-10-02.
August 3, 2023
July 30, 2023
Letting a UN agency police “disinformation” online? What a great idea! With the best of intentions! What could possibly go wrong?
Savroula Pabst outlines the United Nations Development Program’s new online anti-disinformation tool, iVerify:
The United Nations Development Programme (UNDP) has quietly announced the rollout of an automated anti-disinformation tool, iVerify, this spring. The instrument, initially created to support election integrity, centers a multi-stakeholder approach spanning the public and private sectors to “provide national actors with a support package to enhance identification, monitoring and response capacity to threats to information integrity”.
The UNDP demonstrates how iVerify works in a short video, where anyone can send articles to iVerify’s team of local “highly-trained” fact-checkers to determine if “an article is true or not”. The tool also uses machine learning to prevent duplicate article checks, and monitors social media for “toxic” content which can then be sent to “verification” teams of fact-checkers to evaluate, making it a tool with both automated- and human-facilitated elements.
On its website, the UNDP makes a blunt case for iVerify as an instrument against “information pollution“, which they describe as an “overabundance” of harmful, useless or otherwise misleading information that blunts “citizens’ capacity to make informed decisions”. Identifying information pollution as an issue of urgency, the UNDP claims that “misinformation, disinformation, and hate speech threaten peace and security, disproportionately affecting those who are already vulnerable”.
But, behind this rhetoric of fact-checking expertise and protecting society’s most marginalized, iVerify, as a tool functionally claiming an ability to separate the true from the false, actually provides governments, adjacent institutions, and the global elite an opportunity for unprecedented dismissal, and perhaps thus subsequent censorship, of dissenting perspectives and inconvenient information and reporting, all behind the pedigree of a UN institution with international reach.
July 29, 2023
If you like the CRTC regulating the internet, you’ll love having them regulating video games!
Not satisfied with strenuously trying to break the internet for ordinary Canadians, the Trudeau government is now being lobbied to introduce regulation of video games, too:
Bill C-11 may have receded into the background of CRTC consultations and government policy directions, but Canadians concerned with user content, video game and algorithmic regulation would do well to pay attention. Lobby groups that fought for the inclusion of user content regulation in the bill have now turned their attention to the regulatory process and are seeking to undo government assurances that each of those issues – user content, algorithms and even video games – would fall outside of the scope of the regulatory implementation of the bill. In fact, if the groups get their way, Canadians would face unprecedented regulations with the CRTC empowered to create a host of new obligations that could even include requirements for Youtubers and TikTokers to register with the Commission. With a new Heritage Minister in place, the submissions raise serious concerns about whether the government will maintain its commitments regarding scoping out users, video games, and algorithms.
The most troubling publicly available document comes from a coalition that calls itself ACCORD, representing songwriters, composers, and music publishers. The group has posted its submission to the government’s consultation on the draft policy direction to the CRTC on Bill C-11. All submissions are not yet posted, but I should note that I also submitted a brief document, calling on the government to fully honour its commitment to exclude user content and algorithms from regulation and to establish limits on discoverability regulation.
The government’s draft direction had called for “minimizing” algorithmic regulation and the exclusion of user content and video game regulation. The music lobby is now calling on the government to rollback virtually all of its commitments on these issues. The draft direction states:
The Commission is directed not to impose regulatory requirements on
(a) online undertakings in respect of the programs of social media creators, including podcasts; and
(b) broadcasting undertakings in respect of the transmission of video games.
The lobby wants virtually all of this removed, deleting references to online undertakings and video games. Moreover, the directive speaks to Section 4.2, stating:
In exercising its powers under section 4.2 of the Act, the Commission is directed to set out clear, objective and readily ascertainable criteria, including criteria that ensure that the Act only applies in respect of programs that have been broadcast, in whole or in significant part, by a broadcasting undertaking that is required to be carried on under a licence or that is required to be registered with the Commission but does not provide a social media service.
Here too the lobby group wants most of the paragraph deleted. And while the government directed the CRTC to minimize algorithmic regulation for discoverability purposes, the groups wants those limitations removed as well. In short, the lobby groups validate the concerns expressed by thousands of Canadians that Bill C-11 opened the door to the regulation of user content, video games, and algorithms.
July 26, 2023
QotD: Things were better in “the old days”
… everyone of a certain age, but especially those who love history, tend to assume everything was better in the past, because the present sucks so much.
For example, beer. As ganderson points out in the comments below, beer these days is better than it has ever been. I quote:
the “old” microbrew brands, like Sam Adams, Summit, Sierra Nevada, Brooklyn, etc, are shunned by many millennials as not hip enough.
The very fact that excellent suds like Sam Adams can be found in gas stations across the land — making it tragically un-hip — is all the proof you need of ganderson‘s thesis. I didn’t mean to leave the impression, below, that I consider Lone Star, Natty Lite, etc. to be good beer. They are, in fact, very bad beers. But since I went to college back in the days, and was on scholarship to boot, my choices were almost always between “bad beer” and “no beer”. And since beer, any beer, made me much more interesting and attractive to the opposite sex, and they to me, it was never really a choice at all. I have great sentimental attachment to Lone Star beer, but the very thought of drinking it gives me a hangover. […]
The modern world sucks, but lots of things are far better now. Cars, too. I know, I know, they’re mostly Karen-mobiles, but the muscle cars have a hell of a lot more muscle, and they’re orders of magnitude more reliable. I grew up in a world where you could reliably expect cars to start falling apart at 30,000 miles on the odometer – you expected to lose an alternator at 30, a starter at 50, and by 100K miles you’d have a beater, no matter how scrupulously maintained. These days, with just routine idiot maintenance 100K passes without a hitch. That’s a win, and if “shade-tree mechanic” no longer exists (since you need three computers and a special wrench just to get to the spark plugs), well … still a win.
Materially, these days, most things are better, and the things that aren’t better are cheaper, way cheaper. It’s an open question as to whether the latter fact is good or bad, but the fact is, materially life really is, in some ways, what the Leftards say it is. We pay the spiritual price for most of it, but when it comes to alcohol, at least, give me the Current Year.
Severian, “A Historian’s Fallacy”, Rotten Chestnuts, 2020-12-07.
July 24, 2023
Lorenzoni Repeating Flintlock Pistol
Forgotten Weapons
Published 13 Aug 2012Today we have one of the oldest guns we’ve looked at, a Lorenzoni repeating flintlock pistol. The system was designed by an Italian gunmaker in Florence name Michele Lorenzoni. They were made in very small numbers, and the workmanship is stunning, especially considering that they were first manufactured in the 1680s.
Instead of using a revolving cylinder pre-loaded with multiple shots, the Lorenzoni system utilizes powder and ball magazines in the frame of the gun and a rotating breechblock much like a powder throw tool used today for reloading ammunition.
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July 23, 2023
Tom Whipple’s history of radar development during WW2
In The Critic, Robert Hutton reviews The Battle of the Beams by historian Tom Whipple, who retells the story of the technological struggle between Britain and Germany during the Second World War to find ways to guide RAF or Luftwaffe pilots to their targets:
In an age when my phone can tell me exactly where I am and how to get where I’m going, it’s hard sometimes to imagine a time when navigation was one of any traveller’s great challenges. At the outbreak of the Second World War, the advice to Royal Air Force pilots trying to find their way was, more or less, to look out of the window and see whether anything on the ground looked familiar. The Luftwaffe, though, had a rather more sophisticated means of finding their targets.
As Britain braced herself for the bomber onslaught of 1940, there was comfort in knowing that radar would give Hurricanes and Spitfires advance warning of where the attack was coming. As soon as the sun went down, so did the fighters: at night, relying on their eyeballs, they simply couldn’t find the enemy.
That wasn’t so bad, as long as the German pilots had the same problem, but one young British scientist began to suspect that the Luftwaffe had developed a technology that allowed them to find their way even in the dark, guided by radio beams. In June 1940 he found himself explaining to Winston Churchill that German bombers could accurately reach any spot over England that they wanted, even in darkness.
Reg “RV” Jones was the original boffin: a gifted physicist who was recruited to the Air Ministry at the start of the war to help make sense of intelligence reports that offered clues about enemy technology. It was a role to which he was perfectly suited: a man who liked puzzles, with the ability to absorb lots of information and see links, as well as the arrogance to insist on his conclusions, even when his superiors didn’t like them.
The story of the radio battle has been told before, not least by Jones himself. His 1978 memoir Most Secret War was a bestseller and remains in print. It is 700 pages long, though, and it assumes a lot of knowledge about the way 1940s radios worked that readers probably had 50 years ago. Since few people under 50 have much clue why a radio would need a valve or what you might do with a slide rule, there is definitely room for a fresh telling.
July 20, 2023
Water Bombing Workhorse That Keeps On Evolving; the story of the Canadair CL-215, 415, and 515
Polyus
Published 16 Jul 2021The Canadair CL-215 is the most successful flying boat amphibian since the second world war. Its multi-role capabilities range from aerial spraying, search and rescue, cargo service, to its most notable role, as a water bomber. It has the most outstanding performance of any aerial fire fighting platform. Starting production in the late 1960s, it continued production in several forms through ownership by Bombardier and later by Viking Air. The latter is currently developing the exciting next generation CL-515 First Responder with deliveries expected in 2024.
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July 19, 2023
July 18, 2023
Seaplanes? How 1940s. No, we’re seeking to “leverage emerging technologies” instead
CDR Salamander wonders about a modern need for military sea rescue capability that the US Navy filled with flying boats and seaplanes during the Second World War, then supplemented with helicopters during Korea and Vietnam. For ocean search-and-rescue in a combat environment in the present or near future, what are the USN’s plans?
I will be the first person to admit that good, well-meaning, and informed people can disagree with seaplanes in general or the US-2 specifically, but they have to engage the conversation. Directly argue the requirement or offer realistic alternatives.
This does neither. If anything is demonstrates the narrowness of thought and fragility of substance used in opposition.
What an patronizingly toxic stew that answer is. I highly doubt Lung typed out that answer himself, so my commentary below is not directed at him personally, but … and it is what comes after the “but” that counts — but at the three-digit J or N code that extruded that from the random acquisitions professional statement subroutine from ChatGPT.
Let’s give that answer a full Fisking;
- “The Indo-Pacific operational environment has evolved significantly since World War II”:
Let me check my WWII Pacific chart, my Vietnam War era globe, and GoogleEarth … and … no. The geography has not changed. The distances have not changed. The requirement of thousands of years to take and hold territory or eliminate your enemy from access to it has not changed. All the little islands, regardless of what Al Gore and John Kerry say, are still there. As we are seeing in the Russo-Ukrainian War, a million PPT slides saying so does not change the fundamentals of war.
Sentence one is invalid.
- “The employment of seaplanes today would not meet the operational demands and current threat scenario.”
Is there an operational demand for us to rescue downed airmen and to be able to reach remote islands without airfields? Yes. Does your “current threat scenario” run from Northern Japan through to Darwin, Australia? Yes.
Sentence two is invalid.
- “However, we support the continuous development of new and innovative solutions that may provide solutions to logistical challenges.”
So, you define “new” as something that only exists on PPT slides? By “continuous development” you mean never matures as a design that goes into production. By “innovative” you mean high on technology risk. Undefined program risk. Unknown design risk. No known production line or remote estimate to IOC, much less FOC when we know that the next decade is the time of most danger of the next Great Pacific War.
Sentence three is irresponsible and professionally embarrassing given the history of transformational wunderwaffe this century.
- “As an example, DARPA’s Liberty Lifter X-Plane seeks to leverage emerging technologies that may demonstrate seaborn strategic and tactical lift capabilities.”
Well, goodness, we will have to micro-Fisk this gaslighting horror show of a sentence. To start with, they are talking about either this from General Atomics;
… that could only be used on a very few select beaches under ideal weather in a completely permissive environment and could only be used for one specific mission and nowhere any possible hostile aircraft or ground forces. Also looks like we’d need a whole new engine and a small town’s worth of engine mechanics to maintain the maintenance schedule on those engines.
Then we have this offspring of an accidental mating of the Spruce Goose with the Caspian Sea Monster idea from Aurora Flight Sciences;
I give the odds of either one of those taking to the air prior to 2035, if ever, on par with a return of the submarine LST of Cold War fame (deck gun not included).
Let’s get back to the wording of that dog’s breakfast of a final sentence. Feel slimy reading it? You should;
- “seeks to leverage” — that is just a way of saying, “hope in magic beans.” Gobbledegook.
- “emerging technologies” — oh, you mean something that hasn’t left the computer, white board, or PPT slide.
- “that may demonstrate” — so, even if our magic beans managed to fuse unobtainium with Amrita, we’re not really sure if the strip mining of strange blue creatures’s holy sites and drilling holes in the soft pallet of whale-like thing will result in something of use.
- “strategic and tactical lift capabilities” — I’m sorry, an eight or ten-engined aircraft that any goober with a 1960s-era iron-sighted RPG-7 could target at maximum range is going do anything “tactical” — especially at the expected price of those things and the resulting precious few that wind up displacing water. Oh, and you admit that it will only be used for cargo, so it can’t do the full range of possible missions the US-2 can … just cargo. On just a few beaches that are fully surveyed ahead of time. At the right tide. In the right weather. In a 100% safe and permissive environment.
- The final sentence is a caricature.
Rep. Austin Scott (R-GA) should feel at least mildly insulted by this reply. It was a serious question given a canned answer that, slightly modified, could have been provided at any time in the last quarter century by the lethargically complacent maintainers of the suboptimal habits of the mistakingly entitled acquisitions nomenklatura
July 14, 2023
QotD: Resolving “disagreements” on Wikipedia
I keep telling anybody who’ll listen, anytime the subject comes up: Always go to the Wikipedia talk page when you do your “researching” on Wikipedia! Take what you read in the main article with a huge grain of salt if you find a big back-and-forth melee going on in the talk page, for you can take it to the bank that if there’s a disagreement going on between conservative and liberal editors, it will be “resolved” by way of the liberal editors locking the article down after they’ve made sure to get the last word in. Which means what you’ve just read is mostly nothing but pure bovine product. If you’re gleaning this information for any kind of actual purpose, it goes without saying that this is something you should know. Information is meaningless without the “meta data”; without context.
And if there isn’t anything going on back there at all, you should probably still take the main article with a grain of salt because you might be reading a bunch of “everybody knows” gibberish without too much thought behind it.
M.K. Freeberg, “Latest Wikipedia Talk Page Mess: Socialism”, Rotten Chestnuts, 2012-12-01.
July 10, 2023
QotD: Liberal and conservative views on innovation
Liberals and conservatives don’t just vote for different parties — they are different kinds of people. They differ psychologically in ways that are consistent across geography and culture. For example, liberals measure higher on traits like “openness to new experience” and seek out novelty. Conservatives prefer order and predictability. Their attachment to the status quo is an impediment to the re-ordering of society around new technology. Meanwhile, the technologists of Silicon Valley, while suspicious of government regulation, are still some of the most liberal people in the country. Not all liberals are techno-optimists, but virtually all techno-optimists are liberals.
A debate on the merits of change between these two psychological profiles helps guarantee that change benefits society instead of ruining it. Conservatives act as gatekeepers enforcing quality control on the ideas of progressives, ultimately letting in the good ones (like democracy) and keeping out the bad ones (like Marxism). Conservatives have often been wrong in their opposition to good ideas, but the need to win over a critical mass of them ensures that only the best-supported changes are implemented. Curiously, when the change in question is technological rather than social, this debate process is neutered. Instead, we get “inevitablism” — the insistence that opposition to technological change is illegitimate because it will happen regardless of what we want, as if we were captives of history instead of its shapers.
This attitude is all the more bizarre because it hasn’t always been true. When nuclear technology threatened Armageddon, we did what was necessary to limit it to the best of our ability. It may be that AI or automation causes social Armageddon. No one really knows — but if the pessimists are right, will we still have it in us to respond accordingly? It seems like the command of the optimists to lay back and “trust our history” has the upper hand.
Conservative critics of change have often been comically wrong — just like optimists. That’s ultimately not so interesting, because humans can’t predict the future. More interesting have been the times when the predictions of the critics actually came true. The Luddites were skilled artisans who feared that industrial technology would destroy their way of life and replace their high-status craft with factory drudgery. They were right. Twentieth century moralists feared that the automobile would facilitate dating and casual sex. They were right. They erred not in their predictions, but in their belief that the predicted effects were incompatible with a good society. That requires us to have a debate on the merits — about the meaning of the good life.
Nicholas Phillips, “The Fallacy of Techno-Optimism”, Quillette, 2019-06-06.
July 5, 2023
Why Engineers Can’t Control Rivers
Practical Engineering
Published 4 Apr 2023💧 The unintended consequences of trying to change the course of rivers
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July 4, 2023
It’s not “bullying” for corporations to act in their own (and their shareholders’) best interests
The weekly round-up from The Line editors wasn’t happy reading for fans of the Canadian mainstream media:
There are two major items up for consideration, and we’ll deal with each in turn. The first is a proposed merger between Postmedia and the Torstar/Metroland newspapers. The second, and most significant, news item, is that following on Meta/Facebook’s decision to stop featuring news on its feeds, Google is promising to drop the Google News Showcase feature, and to stop surfacing Canadian news links on its search feeds. All of this is in response to C-18, the Online News Act.
This law is trying to force Facebook and Google to compensate news organizations for the links that appear on their platforms; so the companies reacted in an entirely predictable way after the bill received Royal Assent last week — they announced they are going to absent themselves from the scope of the bill by no longer providing those links.
The government, its supporters, and many in the media itself reacted to this announcement with the same inane bluster that has come to dominate the conversation around this byzantine and poorly conceived bill. The Liberals promised to stand up to “Big Tech”; and the media organizations that pinned their survival on milking this new revenue stream are now accusing Google et al. of “bullying”. We at The Line don’t consider this rhetoric to be rational or in good faith. We are annoyed — we are horrified — by these companies’ decisions, but we understand them.
Both Facebook and Google made it clear that C-18 was untenable from a business point of view; they both warned that they would consider pulling news links in response. From Big Tech’s perspective, the decision-making tree is real simple here: does the revenue generated by news outweigh the potential uncapped financial liability that C-18 would present? Further, would complying with C-18 in Canada present a greater risk to the company globally if the bill were replicated in larger media markets? Or are the companies better off to withdraw from a low-priority market pour encourager les autres. We can scream about the evils of Big Tech all we want, but ultimately, these are just math conversations.
No one ought to be surprised that the math didn’t go our way. But almost everyone was. Because — and there’s no nice way to say this — this country’s media industry is both painfully parochial and embarrassingly self-important. For people whose job it is to understand and explain the world to Canadians, it often astonishes us at how incompetent we are at understanding and explaining that world to ourselves. Canadian journalists have an unshakeable faith in our vocation; we genuinely believe that our work is a vital service to democracy. Therefore the fruits of that labour — the news content — must be valuable to the digital platforms that we now depend upon to distribute it. This is why many in the industry were so unshakeably convinced that Facebook and Google were bluffing during the course of C-18. Incredibly, many seem to remain convinced that Big Tech will capitulate to their demands for capital, even now. To quote this old gem: “It is difficult to get a man to understand something, when his salary depends on his not understanding it”.
The flaw in this reasoning ought to be apparent, yet the industry lacks the digital savvy to understand the risk it is courting. “What about Bing, amiright?” Denial and self-importance are now sucking Canadian journalism straight into the maw of an existential crisis. To lose Facebook is a major set back; to lose Google is death.
The thing our colleagues and peers need to come to terms with is that Canadian journalism just isn’t that important in the global scheme of things. Facebook and Google aren’t out to get us — they are indifferent to us. Canadian news comprises a small and un-lucrative segment of even Canadian traffic flows. And Canada is a mid-tier market, at best. Optics aside, global tech oligopolies simply don’t lose very much by cutting us off. Facebook and Google are in the business of advertising, not journalism. They share neither our self regard, nor our democratic mandate; as a result, there is no internally coherent reason for them to take losses in order to save our industry. We just don’t matter to them.
On her Substack, Tasha Kheiriddin doesn’t blame Google for the impending destruction of what’s left of mainstream Canadian media:
The funeral has begun. The pyres are lit; the mourners are weeping. RIP, Canadian media industry, we hardly knew ye. Between mergers, acquisitions, closures, and layoffs, you didn’t stand a chance. And then came Bill C-18.
The legislation, passed last week, compels internet behemoths Meta and Google to compensate Canadian news outlets in exchange for featuring links to their content. Bill C-18 is modeled on an Australian law that saw the two tech giants enter into financial arrangements with media outlets in that country. Here in Canada, the Parliamentary Budget Office estimates similar deals could produce annual revenues of $329 million, a juicy sum for the cash-strapped news business.
Instead, Meta and Google announced that they would no longer include Canadian news links. Rather than reap a profit, Canadian media companies now face the prospect of far fewer eyeballs on screens – and the decimation of their ad revenue. Meta also cut its funding to CN2i, the Coopérative nationale de l’information indépendante, which supports six print publications, including La Presse, further damaging media companies’ bottom line.
Cue the sound of “Taps” and political outrage. Heritage Minister Pablo Rodriguez had this to say:
Big tech would rather spend money to change their platforms to block Canadians from accessing good quality and local news instead of paying their fair share to news organizations … This shows how deeply irresponsible and out of touch they are, especially when they make billions of dollars off of Canadian users.
No, this shows how deeply out of touch the government is with the business model of these companies – and with internet technology in general.
July 3, 2023
Nuclear power
One of the readers of Scott Alexander’s Astral Codex Ten has contributed a review of Safe Enough? A History of Nuclear Power and Accident Risk, by Thomas Wellock. This is one of perhaps a dozen or so anonymous reviews that Scott publishes every year with the readers voting for the best review and the names of the contributors withheld until after the voting is finished:
Let me put Wellock and Rasmussen aside for a moment, and try out a metaphor. The process of Probabilistic Risk Assessment is akin to asking a retailer to answer the question “What would happen if we let a flaming cat loose into your furniture store?”
If the retailer took the notion seriously, she might systematically examine each piece of furniture and engineer placement to minimize possible damage. She might search everyone entering the building for cats, and train the staff in emergency cat herding protocols. Perhaps every once in a while she would hold a drill, where a non-flaming cat was covered with ink and let loose in the store, so the furniture store staff could see what path it took, and how many minutes were required to fish it out from under the beds.
“This seems silly — I mean, what are the odds that someone would ignite a cat?”, you ask. Well, here is the story of the Brown’s Ferry Nuclear Plant fire, in March 1975, which occurred slightly more than a year after the Rasmussen Report was released, as later conveyed by the anti-nuclear group Friends of the Earth.
Just below the plant’s control room, two electricians were trying to seal air leaks in the cable spreading room, where the electrical cables that control the two reactors are separated and routed through different tunnels to the reactor buildings. They were using strips of spongy foam rubber to seal the leaks. They were also using candles to determine whether or not the leaks had been successfully plugged — by observing how the flame was affected by escaping air.
The electrical engineer put the candle too close to the foam rubber, and it burst into flame.
The fire, of course, began to spread out of control. Among the problems encountered during the thirty minutes between ignition and plant shutdown:
- The engineers spent 15 minutes trying to put the fire out themselves, rather than sound the alarm per protocol;
- When the engineers decided to call in the alarm, no one could remember the correct telephone number;
- Electricians had covered the CO2 fire suppression triggers with metal plates, blocking access; and
- Despite the fact that “control board indicating lights were randomly glowing brightly, dimming, and going out; numerous alarms occurring; and smoke coming from beneath panel 9-3, which is the control panel for the emergency core cooling system (ECCS)”, operators tried the equivalent of unplugging the control panel and rebooting it to see if that fixed things. For ten minutes.
This was exactly the sort of Rube Goldberg cascade predicted by Rasmussen’s team. Applied to nuclear power plants, the mathematics of Probabilistic Risk Assessment ultimately showed that “nuclear events” were much more likely to occur than previously believed. But accidents also started small, and with proper planning there were ample opportunities to interrupt the cascade. The computer model of the MIT engineers seemed, in principle, to be an excellent fit to reality.
As a reminder, there are over 20,000 parts in a utility-scale plant. The path to nuclear safety was, to the early nuclear bureaucracy, quite simple: Analyze, inspect, and model the relationship of every single one of them.