161–170 of 175 posts
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Big earthquake implies things like UMBs collapsing.
What are UMBs?
https://en.m.wikipedia.org/wiki/Unreinforced_masonry_buildin...
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The good news is, water is cold (generally), doesn't combust (generally), and there is a LOT of it. So spraying water, while it can make it spicier for a bit, allows you to suck away enough heat fast enough that it works okayish. It's the scalable, but not ideal, solution generally. Current guidance is don't bother with anything else, just spray it until the flames stop.
only if you have enough water. if you don’t have enough water, it will just spread the fire
It’s also relatively simple training and equipment wise (‘spray it with water until the bad flames stop’), and most locations have teams of people on call and ready to do it.
Not perfect, but it’s the best we’ve been able to come up with outside of specialized industrial environments. shrug
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What are UMBs?
Upper Memory Blocks, the area between the 640 KiB and 1 MiB range that becomes available on 286+ machines in real mode once the A20 address line is no longer held low by the keyboard controller.
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I take mine to the local dump. They have an electronics recycling drop off, which is free.
My city has a recycling center for household products, but it requires the use of a motor vehicle. I have been unsuccessful in using taxi or ride-sharing services to drop off items. Unfortunately, the inflexible vehicle requirement is a deal breaker for me and many of my neighbors.
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I often wonder about this while hiking or riding my dirt bike out on the trails. Gas powered dirt bikes are prohibited almost everywhere due to risk of fire and chemical contamination. However, more and more I am seeing e-bikes ripping around on hiking trails that would get me and my dirt bikes a hefty fine and impound. The risk of fire and contamination is practically the same. And these e-bikes are typically driven…
> The risk of fire and contamination is practically the same. Source? There's very little risk of an e-bike catching fire unless you're charging the battery. Most of the risk will be at home. Battery fires gets a lot of attention because they're a new thing, but they're far safer than ICE alternatives in almost all circumstances. At least that's what the fire department here in Norway says, and they have pretty good…
When you ride trails you sometimes fall down. Sometimes you catch a branch with your bars. Sometimes your bike lands on rocks or logs.
The down tube of an ebike frame is often where the batteries are located. This area takes a lot of abuse from the front wheel and is in perfect position to take damage during frontal impact.
Look up my YT @Platinum_Racing to see an example of terrain that could very easily destroy an ebike or gas bike.
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I take mine to the local dump. They have an electronics recycling drop off, which is free.
My city has a recycling center for household products, but it requires the use of a motor vehicle. I have been unsuccessful in using taxi or ride-sharing services to drop off items. Unfortunately, the inflexible vehicle requirement is a deal breaker for me and many of my neighbors.
Shops that sell electrical goods (computers, audiovisual, cookers, etc.) have to be willing to accept electrical goods for recycling even if they don't sell that specific model or even brand. So a lot more people are within a reasonable distance of a place to recycle quite a few things.
Perhaps stores elsewhere could do the same.
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Most job applications for positions with any sort of physical aspect (grocery, hardware stores, maintenance) ask whether the applicant can lift 50 lbs (23 kg) over their head.
Not where I come from (UK) and not where I live (Norway). Can anyone else comment on how widespread this sort of requirement actually is?
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> A fire extinguisher large enough for a 500wh battery weighs 12 kilos - most people can barely lift that! Almost everyone can lift that overhead . 90% of men and more than 50% of women can lift a bit more than twice that overhead. It's a common job requirement. There would have to be something really wrong for an adult to struggle lifting 12kg. That's a large watermelon, and unlike the melon, the fire extinguisher g…
Where on earth do you get 12 kg watermelons? Genuine curious, the ones imported here in Denmark I would guess are big if they're around 3 kg.
1: https://www.whataboutwatermelon.com/index.php/2018/08/how-he...
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>Ebike and drone batteries are large enough to be properly dangerous and fire departments make noises about them but offer no solutions. A suitable fireproof containment bag + fire-resistant gloves is about $1200 AUD (Brimstone Preventer [1], but I'm sure alternatives are available. This one is small phone/tablet sized and rated for 10k mAh). But most people won't purchase a >A fire extinguisher large enough for a 50…
> This Bag Has Contained 10,000 mAh Thermal Runaway Events. Is it just me, or is their choice to use mAh—a meaningless unit in this context—a major red flag? Five figures for a bag, and they can’t even get their units right? Is there some “standard voltage” of which I’m not aware? > Our bags were tested on 4 separate occasions with an overheated laptop, each containing a 3,500mAh - 4500mAh Lithium-Ion battery. The co…
Most lithium-based rechargeable cells are nominally between 3.2 and 3.8 volts and are rated in mAh[1]. I would much prefer that they were rated in watt-hours, but they are not.
1: I've seen LMOs with nominal voltages as high as 3.8; LiFePO4 are Nominally 3.2; I think there are some exotic electrode chemistries that are nominally under 3V, but 3.2-3.8 is a fairly solid range for the nominal voltage; voltages at full charge and "empty" will be higher and lower respectively.