this post was submitted on 29 Sep 2024
709 points (98.9% liked)

Lemmy Shitpost

27162 readers
3312 users here now

Welcome to Lemmy Shitpost. Here you can shitpost to your hearts content.

Anything and everything goes. Memes, Jokes, Vents and Banter. Though we still have to comply with lemmy.world instance rules. So behave!


Rules:

1. Be Respectful


Refrain from using harmful language pertaining to a protected characteristic: e.g. race, gender, sexuality, disability or religion.

Refrain from being argumentative when responding or commenting to posts/replies. Personal attacks are not welcome here.

...


2. No Illegal Content


Content that violates the law. Any post/comment found to be in breach of common law will be removed and given to the authorities if required.

That means:

-No promoting violence/threats against any individuals

-No CSA content or Revenge Porn

-No sharing private/personal information (Doxxing)

...


3. No Spam


Posting the same post, no matter the intent is against the rules.

-If you have posted content, please refrain from re-posting said content within this community.

-Do not spam posts with intent to harass, annoy, bully, advertise, scam or harm this community.

-No posting Scams/Advertisements/Phishing Links/IP Grabbers

-No Bots, Bots will be banned from the community.

...


4. No Porn/ExplicitContent


-Do not post explicit content. Lemmy.World is not the instance for NSFW content.

-Do not post Gore or Shock Content.

...


5. No Enciting Harassment,Brigading, Doxxing or Witch Hunts


-Do not Brigade other Communities

-No calls to action against other communities/users within Lemmy or outside of Lemmy.

-No Witch Hunts against users/communities.

-No content that harasses members within or outside of the community.

...


6. NSFW should be behind NSFW tags.


-Content that is NSFW should be behind NSFW tags.

-Content that might be distressing should be kept behind NSFW tags.

...

If you see content that is a breach of the rules, please flag and report the comment and a moderator will take action where they can.


Also check out:

Partnered Communities:

1.Memes

2.Lemmy Review

3.Mildly Infuriating

4.Lemmy Be Wholesome

5.No Stupid Questions

6.You Should Know

7.Comedy Heaven

8.Credible Defense

9.Ten Forward

10.LinuxMemes (Linux themed memes)


Reach out to

All communities included on the sidebar are to be made in compliance with the instance rules. Striker

founded 2 years ago
MODERATORS
 
top 50 comments
sorted by: hot top controversial new old
[–] [email protected] 15 points 2 months ago
[–] [email protected] 46 points 2 months ago (5 children)

I have no idea what to do if I see this

[–] [email protected] 9 points 2 months ago

Go to the breaker box and pull the big one labeled "main". Then call the fire department.

[–] [email protected] 14 points 2 months ago

Get the fuck out and call the fire department.

[–] [email protected] 54 points 2 months ago* (last edited 2 months ago) (1 children)

Leave immediately and call 911 for an impending gas explosion. Tell them exactly what you saw, it will need to be disconnected somewhere very far away from the house. Aside from this being an obvious fake if you see a glowing pipe it’s the result of a deadly serious electrical fault that has bypassed at least 2 safety mechanisms that would otherwise prevent this catastrophic failure and at that point you really don’t even want to be touching the walls of the structure involved.

[–] [email protected] 3 points 2 months ago

Someone linked a story that didn't have an image (didn't watch the video) so this may not actually be fake

[–] [email protected] 35 points 2 months ago

Run. That's what I would do. Then probably call the fire department, the gas company, or an exorcist. Possibly all 3.

[–] [email protected] 11 points 2 months ago

Either turn off the gas if you can safely do it, or call your gas company so they can shut off the supply to your house.

[–] [email protected] 32 points 2 months ago

So there's an air leak upstream allowing a fire inside the gas line. And the house didn't go up in flames I assume. Probably this situation would not end in a big explosion but rather just a house fire. Still pretty scary.

[–] [email protected] 10 points 2 months ago

Showed my partner, they said, "Is this some kind of raaave??"

[–] [email protected] 66 points 2 months ago

"I've got a buddy who can do the gas and the 'leccy. Super cheap."

[–] [email protected] 5 points 2 months ago

Time for a shower!

[–] [email protected] 2 points 2 months ago

Pumpkin-spice gas for the holidays

[–] [email protected] 173 points 2 months ago* (last edited 2 months ago) (3 children)

When this was posted on Reddit recently, someone claimed this was caused by a fallen power line that made contact with a gas line. So, power flowing into the house through gas pipe and back out through equipment grounds, heating up lower resistance gas pipes in the process.

Photo reportedly taken by fire fighters or gas company employees.

Edit: I meant to type higher resistance...

[–] [email protected] 1 points 2 months ago

ELI5 anyone?

[–] [email protected] 32 points 2 months ago* (last edited 2 months ago) (2 children)

This makes no sense at all.

Why would only these two specific pipes get hot, so hot to glow, but not the other lines connected to it? And not the fittings around it? It's all copper, so even if the power itself doesn't heat them up, why would being connected to an extremely hot pipe heat it up. Since it's you know copper and being good at transferring heat is what it's known for.

And why would the lower resistance part be the part that get hottest? Low resistance means less loss, so those parts would in fact be the coldest of all.

Plus thin walled copper pipes can't get so hot they glow without melting or at the very least lose all structural integrity and break.

And a downed power line with a short to ground would almost immediately turn off. It's when there isn't a direct line to ground those things are dangerous. As soon as it shorts, it gets turned off at the source to prevent further damage, fire and not cause issues upstream.

Either it's Photoshop or someone has wrapped led lighting around some pipes.

[–] [email protected] 57 points 2 months ago (1 children)

Both of the lines that are lit up are flexible aluminum couplings. They're required in some areas as the final connections to the appliances. They're in line with cast iron gas pipe and fittings. They are much more thin and way better at conducting heat.

Source: former HVAC tech

[–] [email protected] 10 points 2 months ago* (last edited 2 months ago) (2 children)

Thanks for the clarification, pipes look like copper but might be cast iron.

Still doesn't fit with the explanation, aluminum has more resistance than copper, but not that much more. The resistance of cast iron is an order of magnitude higher than aluminum. So it would still be the lowest resistance in the circuit and thus the coolest part.

And cast iron is pretty good at conducting heat. Not as good as copper or aluminum, but still pretty good. We've been using the material to make pans and pots for cooking because of it's thermal properties. So the heat wouldn't just stop at the fitting, but continue on at least some ways.

Moreover it's physically impossible to get aluminum hot enough to glow like this and still keep its shape. It melts at 600 degrees C, well below the point where something gets red hot, let alone yellow like this. If the aluminum were to be this hot, it would be in a puddle and at risk of burning.

[–] [email protected] 8 points 2 months ago

The flexible pipes are normally stainless steel. The main gas line is steel with thick walls so this seems plausible to me. Stainless steel has higher resistance than steel and is so much thinner.

[–] [email protected] 8 points 2 months ago* (last edited 2 months ago)

Sorry, I meant to type higher resistance. On my water heater, the equivalent part that is glowing in the picture is a really thin flexible corrugated gas pipe that surely can carry much much less current than the iron gas pipe feeding it before it went really high resistance. I could totally see it glowing like this with enough current. But if it is aluminum (not sure if it is), what you said makes sense.

My gas pipe to the house comes out of the ground inside a plastic protective pipe sleeve, so I can imagine it possibly not having enough of a low resistance path to earth to trip one of the cutout fuses on the primary distribution line. Granted, mine also has a big ground wire bonding it to the house ground, which I would think would help here...

/shrug I was just sharing what I read. It was supposedly the explanation as to why local breakers on the house didn't trip.

[–] [email protected] 40 points 2 months ago

Well that's truly fucking terrifying

[–] [email protected] 17 points 2 months ago (2 children)

While it looks scary as fuck, wouldn't it not actually explode unless the gas pipe melted through? There's no oxygen in the fuel, so it can't combust. I guess as the gas heats up, it's also possible the for the tank or lines to spring a leak.

Either way, I'd be nopeing out and calling emergency services.

[–] [email protected] 2 points 2 months ago

Correct. Natural gas can't be over 15% to burn.

[–] [email protected] 32 points 2 months ago (1 children)

unless the gas pipe melted through

That looks pretty damn likely imminent to me...

[–] [email protected] 23 points 2 months ago (1 children)

I think you're right. I was curious, so I looked it up.

The melting point of copper is 1,085°C, and judging from this chart, its definitely getting close:

metal color temp chart

[–] [email protected] 3 points 2 months ago (2 children)

You ever see gas hookups in the US?

We use black pipe for most of the run. Cast Iron. The actual hookup itself is a flexible pipe...SS or Aluminum I think. Been a long time since I had gas. Sometimes they have like a rubbery-epoxy-ish coating but I assume that's now quite gone and stinky.

[–] [email protected] 1 points 2 months ago

Def not cast iron, cast iron is used for waste pipes and it's brittle you could never get threads on cast iron. It's actually steel even if we call it black iron. A lot of newer houses will run solid pipe from the main to a central location and build a manifold with corrugated steal (flexible pipes) run to the terminal points.

[–] [email protected] 1 points 2 months ago (1 children)

Oh, huh. That's interesting. I'm from the great white north, and our gas hookups are copper from what I've seen. If this is indeed iron, then the melting point would be higher: ~ 1,540°C.

Interestingly that colour temperature chart is supposedly fairly consistent across different metals.

[–] [email protected] 1 points 2 months ago

Tbh I don't know why we don't use copper. I imagine because it's more difficult to fuck up threaded and doped connections as opposed to soldered ones.

load more comments
view more: next ›