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Posted on 9/2/20 at 12:22 pm to Dawgwithnoname
At my previous employer, we buried 1200 ft of 69Kv lines. For 900A, the cable was 2200MCM and cost $100,000 per ft to install, and this was in 2008. It just isn’t cost effective to bury transmission.
Posted on 9/2/20 at 1:16 pm to SaintEB
That number has grown considerably since 2008, and Distribution is cheaper, but not as much as you'd think. It's kind of like green energy: it sounds like a fantastic idea until you crunch the numbers and realize it's not a good investment.
Posted on 9/2/20 at 4:13 pm to SaintEB
quote:
doesn’t require this area to design for 140 mph winds.
Entergy standards design for 140. That’s why there’s so many poles still standing. The old legacy stuff if what got wrecked
Posted on 9/2/20 at 4:44 pm to CHEDBALLZ
quote:
Why don't they use metal poles in areas prone to high wind?
From Moss Bluff to almost Derrider LA along hwy 171 was rebuilt after Rita with metal poles, probably 90% of the metal poles are on the ground now. The wood poles snap in the middle, the metal poles buckle right at the ground level.
Posted on 9/2/20 at 4:52 pm to thejudge
My company has been working w them on sending large generators out to sites for repairs and getting back online
1000kw to 2000kw generators since Saturday
Not sure when it will end
1000kw to 2000kw generators since Saturday
Not sure when it will end
Posted on 9/2/20 at 5:00 pm to lagniappe09
quote:I saw 3 truckloads heading South this morning. I assumed that is where they were going. Each truck had a bunch of tarps strapped down as well.
My company has been working w them on sending large generators out to sites for repairs and getting back online
1000kw to 2000kw generators since Saturday
Posted on 9/2/20 at 6:01 pm to Vlad
Just heard through the grapevine Entergy has put out an international call for equipment. They need 1,100 transmission line structures and over 800,000 feet of 500 kVa transmission line. The entire electric industry both in the US and abroad is scrambling to send as much as they can.
This post was edited on 9/2/20 at 6:02 pm
Posted on 9/2/20 at 6:06 pm to 9Fiddy
The lead time on some of the equipment I’m seeing is ridiculous. It’s gonna take some time folks.
Posted on 9/2/20 at 6:09 pm to jimbeam
That's the biggest issue. 500 kVa conductor isn't just laying around in a storage depot somewhere. Not to mention the 1,100 transmission structures which can range from 40 ft wood poles all the way to the big metal towers you see spanning the country.
Posted on 9/2/20 at 7:25 pm to 9Fiddy
Anyone working around electricity and weather has my respect. That is a man’s job. I appreciate the men and women who restore power and work long hours. Thank you !
Posted on 9/2/20 at 7:34 pm to EA6B
quote:
From Moss Bluff to almost Derrider LA along hwy 171 was rebuilt after Rita with metal poles, probably 90% of the metal poles are on the ground now.
I just drove that route. From the Reeves tie in South it looked like 90% of the metal on the east side of the road were standing.
Thanks for all the input from those in the know. We have some cogeneration units in our facility that put onto the grid. We are separated from Entergy as of now with damage. I'm still holding out hope our homes proximity to the Entergy plant itself will get power back.
Then I can house 8 people in my shop as its self contained with AC and we can start helping as well.
Posted on 9/2/20 at 7:36 pm to 9Fiddy
quote:
500 kVa conductor
It’s just triple bundled normal conductor. But yea no ones keeps the amount they need for this restoration on hand
Posted on 9/2/20 at 7:46 pm to Croozin2
What does the shortish tether line mean that the crews hook between the power lines? Toledo Bend area they had a obvious sign on it. Local repair nothing usually has nothing on it. Does it just show an observer or crew they are working on the line? Or does it show HQ where on the grid they are working?
Posted on 9/2/20 at 7:47 pm to Klingler7
quote:Truth right here. Some bad summbitches
Anyone working around electricity and weather has my respect. That is a man’s job.
Posted on 9/2/20 at 10:13 pm to holmesbr
quote:
the shortish tether line mean that the crews hook between the power lines?
That’s how you ground the lines and isolate your work zone in case a stray current comes through and zap
Posted on 9/3/20 at 6:03 am to holmesbr
quote:
What does the shortish tether line mean
That’s usually a ground. You ground one conductor and loop the other two phases to it. It will either have a bright orange or high-viz green flag on it. Even in normal times, line sections must be patrolled for ground sets before energizing. Then, a switching order is given by the TOC (Transmission Ops Center) and must be read back to them by field personnel in echo protocol. This is all to protect any persons that may still be working on that section and to make sure instructions are followed precisely. While you may see local distribution lines worked “hot” at times, the safe working distances at Transmission voltages (69kv - 500kv) do not allow for hot work.
The saying goes, “If it isn’t grounded, consider it hot”. Even if de-energized, static from a second energized parallel line can create enough static electricity to kill. Not the static you generate from sliding across your vahicle’s seat. All in all, the safety manual for utility workers was typically written in blood.
ETA: If you want to see the power that these guys are dealing with, google or search YouTube for “Failure of temporary protective ground”. Those ground leads are insulated 4/0 copper. About twice the size of your thumb. They dance like kite string when they’re closed in on.
This post was edited on 9/3/20 at 6:25 am
Posted on 9/3/20 at 6:50 am to soccerfüt
I passed a number of snapped concrete poles yesterday. Both heading to Hackberry and along hwy 90 near Iowa
Posted on 9/3/20 at 6:53 am to thejudge
The difference in storm response from 2015 to now is amazing.
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