5 ms·

Power outages caused by squirrels

46 points by tod222 13y ago

bluedino 13y ago
My significant other works at the local power company, I'm always receiving SMS pictures of charred raccoons etc.
- fnordfnordfnord 13y ago
  Isn't that romantic.
antsam 13y ago
I've had a squirrel segment my Christmas lights into easy to carry pieces twice now :(
patio11 13y ago
Matthew Olearczyk, a program manager with the Electric Power Research Institute, explains that typically a squirrel will cause a blackout by scampering across electrical equipment and touching simultaneously both an energized component, like one of the cylindrical transformers at the top of a utility pole, and a grounded piece of equipment. The squirrel completes the circuit, generating an arc. There is an instantaneous flash of blue light. At its center is the squirrel, combusting. It's written in a very Dave Barry sensibility throughout.
VLM 13y ago
Koprowski's explanation from the last page is probably the most correct part of the article. Having done some time in the "greater telecom biz" I assure you that squirrels do not solely eat copper power wires, they are ravenous for aerial optical fiber and most any coaxial cable (CATV, communications/RF stuff, etc) I have not studied this at length but I'm told the carcass from turning a squirrel into a power line fuse is substantially different than the carcass from shorting out a couple KW of broadcast transmitter RF and a tech can tell at a glance which cabling needs replacing when they see a smoking carcass on the ground. But I never worked outside plant so this might just be a tall tale they tell cubie dwellers. Unlike what the article claims, I'm told there's off the shelf nearly perfect repellants based on hot sauce and at least some cables like coax are often flooded with a dielectric gel which is designed to taste awful, or so they claim.
harrytuttle 13y ago
Squirrels stole a chunk of fiber we had between two buildings years ago. They used it to make nests with. We even had a video of them hanging upside down going along the supporting cable. Cost us 3 days of downtime though (this was internal office network). mitigation was simply rubbing vaseline (petroleum jelly) all over it once a quarter so they just fell off. Wildlife is incredibly destructive :)
- fnordfnordfnord 13y ago
  >Wildlife is incredibly destructive :) Said the guy whose office occupies the space where the trees that grandma and grandpa squirrel used to live in once stood.
  - harrytuttle 13y ago
    Well hardly. The building was built on an old air strip and we had the trees planted! I agree with your sentiment though entirely.
tokipin 13y ago
squirrels are badass. they use the power lines as highways and they even have off-ramps (tree branches). and then there's this squirrel i see sometimes that has dark fur and it isn't afraid of humans and goes right out in the open eating all the nuts that the other human-fearing squirrels would never get close to and one time it gave me this look
- gadders 13y ago
  Probably a Crack Squirrel - http://www.theguardian.com/uk/2005/oct/08/drugsandalcohol.patrickbarkham http://www.theguardian.com/uk/2005/oct/08/drugsandalcohol.pa...
packetslave 13y ago
We've had at least one datacenter power issue where the root cause was a cat. 9 lives tend to get used up quickly when 115kV is involved.
jloughry 13y ago
Peter Neumann has collected extensive archives on squirrelcides resulting in power failures. Search the RISKS archive at http://catless.ncl.ac.uk/RISKS http://catless.ncl.ac.uk/RISKS for lots of reports.
rangibaby 13y ago
2009: 'A bird dropping a piece of bread onto outdoor machinery has been blamed for a technical fault at the Large Hadron Collider (LHC) this week which saw significant overheating in sections of the mighty particle-punisher's subterranean 27-km supercooled magnetic doughnut... As a result, temperatures in part of the LHC's circuit climbed to almost 8 Kelvin - significantly higher than the normal operating temperature of 1.9, and close to the temperature at which the LHC's niobium-titanium magnets are likely to "quench", or cease superconducting and become ordinary "warm" magnets.' [1] http://www.theregister.co.uk/2009/11/05/lhc_bread_bomb_dump_incident/ http://www.theregister.co.uk/2009/11/05/lhc_bread_bomb_dump_...
- Wingman4l7 13y ago
  1945: A Japanese fire balloon[1] was responsible for causing "a short circuit in the power lines supplying electricity for the nuclear reactor cooling pumps" at the Hanford Site of the Manhattan Project -- but "backup safety devices restored power almost immediately". [1]: https://en.wikipedia.org/wiki/Fire_balloon https://en.wikipedia.org/wiki/Fire_balloon
jsz0 13y ago
They cause quite a few Internet outages too. We have a lot of change management tickets filed under 'squirrel damage' so at some point I started using it for some of my change management requests. BGP blip? God damn squirrels.
alecthomas 13y ago
I used to work at a large telco in Australia, and one of the most infamous support tickets in the system had the summary "Bird attack at the Hellfire club". The Hellfire club is a BDSM club in Melbourne, and apparently a bird had attacked the cabling leading into the building, bringing down the phone systems.

46 points by tod222 13y ago

bluedino 13y ago

My significant other works at the local power company, I'm always receiving SMS pictures of charred raccoons etc.

fnordfnordfnord 13y ago
Isn't that romantic.

antsam 13y ago

I've had a squirrel segment my Christmas lights into easy to carry pieces twice now :(

patio11 13y ago

Matthew Olearczyk, a program manager with the Electric Power Research Institute, explains that typically a squirrel will cause a blackout by scampering across electrical equipment and touching simultaneously both an energized component, like one of the cylindrical transformers at the top of a utility pole, and a grounded piece of equipment. The squirrel completes the circuit, generating an arc. There is an instantaneous flash of blue light. At its center is the squirrel, combusting. It's written in a very Dave Barry sensibility throughout.

VLM 13y ago

Koprowski's explanation from the last page is probably the most correct part of the article. Having done some time in the "greater telecom biz" I assure you that squirrels do not solely eat copper power wires, they are ravenous for aerial optical fiber and most any coaxial cable (CATV, communications/RF stuff, etc) I have not studied this at length but I'm told the carcass from turning a squirrel into a power line fuse is substantially different than the carcass from shorting out a couple KW of broadcast transmitter RF and a tech can tell at a glance which cabling needs replacing when they see a smoking carcass on the ground. But I never worked outside plant so this might just be a tall tale they tell cubie dwellers. Unlike what the article claims, I'm told there's off the shelf nearly perfect repellants based on hot sauce and at least some cables like coax are often flooded with a dielectric gel which is designed to taste awful, or so they claim.

harrytuttle 13y ago

Squirrels stole a chunk of fiber we had between two buildings years ago. They used it to make nests with. We even had a video of them hanging upside down going along the supporting cable. Cost us 3 days of downtime though (this was internal office network). mitigation was simply rubbing vaseline (petroleum jelly) all over it once a quarter so they just fell off. Wildlife is incredibly destructive :)

fnordfnordfnord 13y ago
>Wildlife is incredibly destructive :) Said the guy whose office occupies the space where the trees that grandma and grandpa squirrel used to live in once stood.
- harrytuttle 13y ago
  Well hardly. The building was built on an old air strip and we had the trees planted! I agree with your sentiment though entirely.

tokipin 13y ago

squirrels are badass. they use the power lines as highways and they even have off-ramps (tree branches). and then there's this squirrel i see sometimes that has dark fur and it isn't afraid of humans and goes right out in the open eating all the nuts that the other human-fearing squirrels would never get close to and one time it gave me this look

gadders 13y ago
Probably a Crack Squirrel - http://www.theguardian.com/uk/2005/oct/08/drugsandalcohol.patrickbarkham http://www.theguardian.com/uk/2005/oct/08/drugsandalcohol.pa...

packetslave 13y ago

We've had at least one datacenter power issue where the root cause was a cat. 9 lives tend to get used up quickly when 115kV is involved.

jloughry 13y ago

Peter Neumann has collected extensive archives on squirrelcides resulting in power failures. Search the RISKS archive at http://catless.ncl.ac.uk/RISKS http://catless.ncl.ac.uk/RISKS for lots of reports.

rangibaby 13y ago

2009: 'A bird dropping a piece of bread onto outdoor machinery has been blamed for a technical fault at the Large Hadron Collider (LHC) this week which saw significant overheating in sections of the mighty particle-punisher's subterranean 27-km supercooled magnetic doughnut... As a result, temperatures in part of the LHC's circuit climbed to almost 8 Kelvin - significantly higher than the normal operating temperature of 1.9, and close to the temperature at which the LHC's niobium-titanium magnets are likely to "quench", or cease superconducting and become ordinary "warm" magnets.' [1] http://www.theregister.co.uk/2009/11/05/lhc_bread_bomb_dump_incident/ http://www.theregister.co.uk/2009/11/05/lhc_bread_bomb_dump_...

Wingman4l7 13y ago
1945: A Japanese fire balloon[1] was responsible for causing "a short circuit in the power lines supplying electricity for the nuclear reactor cooling pumps" at the Hanford Site of the Manhattan Project -- but "backup safety devices restored power almost immediately". [1]: https://en.wikipedia.org/wiki/Fire_balloon https://en.wikipedia.org/wiki/Fire_balloon

jsz0 13y ago

They cause quite a few Internet outages too. We have a lot of change management tickets filed under 'squirrel damage' so at some point I started using it for some of my change management requests. BGP blip? God damn squirrels.

alecthomas 13y ago

I used to work at a large telco in Australia, and one of the most infamous support tickets in the system had the summary "Bird attack at the Hellfire club". The Hellfire club is a BDSM club in Melbourne, and apparently a bird had attacked the cabling leading into the building, bringing down the phone systems.