View allAll Photos Tagged Grounding
It is never boringly with Susa and we always have much fun. Lava Bar in Au (SG), Switzerland during Karaoke, Sep 26, 2006.
Two miniature pylons routing the grounding conductors from the DC converter station (which converts 230kV AC to + / - 400kV DC before heading directly east to the Twin Cities). It seems the company decided to route part of the grounding circuit onto a nearby 230kV double-circuit tower line.
The two units in the background were completed in 1979 and 1981, and recently changed hands to a North Dakota-based group, otherwise Great River was fully prepared to shut down and demolish the plant in 2022 (at over one GIGAWATT of capacity, it was THE largest in the state).
It seems Minnesota has forced all the utilities operating in the state to get rid of their coal-fired plants regardless of location (one of the last such within Minnesota, Xcel's Sherburne County Plant, is set to shut down in the near future). Otter Tail Power has pledged that its Coyote Station, an hour west of this plant, will not be used to serve any of its Minnesota customers after the deadline.
A slight navigation error resulted in Starling running aground in the soft clay of a fjord while making a passage from Harstad to Storjord, Norway. Captain Vince worked his way to the end of the boom where his weight provided enough leverage to lift Starling's keel off the bottom. Thankfully there was no damage done.This was a trip from Tromso to Bodo, Norway on the Clipper 60 sailboat Starling with UK-based adventure sailing company Rubicon3. www.rubicon3adventure.com
Here is a nice shot of the coils. The one that is laying flat is the primary coil, it is the one that is actually connected to the transformer. The blue wire is the secondary coil, it is connected to ground at the bottom and the toroid at the top. The electricity passing around the primary coil should create a field that will charge the secondary coil, with the toroid at the top acting as a capacitor.
via John Currin (JC - Ex RNZN) - Google+ Public Posts ift.tt/2e0xDzL
More Than Two Months After its Grounding, Transocean Winner Departs Scotland Aboard Heavy Lift Ship – gCaptain
Walking along the beach, feeling the sand between your toes, grounding you with each step as the steady roar of the ocean fills the air, sometimes a deep rumble, sometimes a gentle sigh. The waves rolling in gently and then retreating like breath itself, and in their rhythm you find space to think, to wonder what lies beyond that moment. Questions surface quietly—what is next, where will the path lead, what unexpected turns might life still hold? With the horizon stretching endlessly in front of you, you can't help but wonder - what lies ahead: something to fear or an invitation, as wide and open as the sea before you?
Inveneo is proud to be an implementing partner with Creative Associates in the Tanzania 21st Century Basic Education Program (Tz21) where our role is to lead the technology intervention design and deployment with Kicheko Ltd, our Inveneo Certified ICT Partner (ICIP) in Tanzania. Together, Inveneo and Kicheko have been instrumental in introducing sustainable technology solutions that are relevant to rural Tanzanian schools that often lack electrical power and ICT skilled staff.
Recently we passed a major milestone in the program - the deployment of information and communication technologies to 5 pilot schools.
Dr. H.E. Kavishe of Kicheko, Wayan Vota and Jen Overgaag of Inveneo, assisted by a cadre of Kicheko technicians, installed a mix of laptops, desktops, LED projectors and related networking and power equipment at Naliendele, Kambarage, Darajani, and Kisiwandui Primary Schools, and Machakaeni Teacher Center.
The pilot deployment is testing technology configurations and the installation was used to train local engineers on Inveneo installation methodologies in preparation for the major ICT deployment to all schools, scheduled for early 2012.
Read more on the Inveneo newsfeed.
Inveneo is proud to be an implementing partner with Creative Associates in the Tanzania 21st Century Basic Education Program (Tz21) where our role is to lead the technology intervention design and deployment with Kicheko Ltd, our Inveneo Certified ICT Partner (ICIP) in Tanzania. Together, Inveneo and Kicheko have been instrumental in introducing sustainable technology solutions that are relevant to rural Tanzanian schools that often lack electrical power and ICT skilled staff.
Recently we passed a major milestone in the program - the deployment of information and communication technologies to 5 pilot schools.
Dr. H.E. Kavishe of Kicheko, Wayan Vota and Jen Overgaag of Inveneo, assisted by a cadre of Kicheko technicians, installed a mix of laptops, desktops, LED projectors and related networking and power equipment at Naliendele, Kambarage, Darajani, and Kisiwandui Primary Schools, and Machakaeni Teacher Center.
The pilot deployment is testing technology configurations and the installation was used to train local engineers on Inveneo installation methodologies in preparation for the major ICT deployment to all schools, scheduled for early 2012.
Read more on the Inveneo newsfeed.
If you are searching for the products that offer you maximum protection from electromagnetic fields, you must define your requirements first. There are many products available in the market. So, your requirements will meet the solutions. Picking a wrong EMF blocking product will not be the best thing for you. So, understand your needs and buy products that satisfy your demands. FilterEMF is the best place where you can buy quality products for shielding electromagnetic fields. The collection is very huge and you will get some innovative choices also.
www.filteremf.com/our_blog/shield-emf-and-live-in-a-healt...
"Princess Sophia on Vanderbilt Reef."
Date: October 24, 1918
Source Type: Postcard
Publisher, Printer, Photographer: Winter-Pond Company (Juneau)
Postmark: None
Collection: Steven R. Shook
rEMARK: The SS Princess Sophia was a steel-built coastal passenger liner in the coastal service fleet of the Canadian Pacific Railway (CPR). Princess Sophia was built for CPR during 1910-1911.
On October 25, 1918, the Sophia sank with the loss of all aboard after grounding on Vanderbilt Reef in Lynn Canal near Juneau, Alaska. With 343 or more people lost, the wreck of the Princess Sophia was the worst maritime accident in the history of British Columbia and Alaska. The circumstances of the wreck were controversial, as some felt that all aboard could have been saved.
Copyright 2011. Some rights reserved. The associated text may not be reproduced or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of Steven R. Shook.
Sailboat stuck at low tide in False Creek, Vancouver, BC 1977. This was taken from Beach Drive in the West End looking across False Creek to the planetarium in Kitsilano's Vanier Park.
This is one of the main reasons I like to go camping. As I walk the trails I pic the plants that I will be using for alchemy purposes, and when I get back to my campsite I press them. Usualy a few weeks after I get home I begin to go through match plant to picture, and store them for later use... I gather most of the herbs I use for the year on these 2 camping trips. I find working with natural growing ones to be more potenent than store bought/special ordered.
The following is a list of different herbs and their meanings.... I didn't occur these from just a single source.... Some sources have listed a meaning, yet I haven't found a second resource to back it up.... those things I left out.
0.8 Series CCS Round Wire
Origin of new material development
0.8mm series copper-clad round wire is a new type of material developed by our Company to replace pure copper. Because it has the advantages of high strength, low price, high corrosion resistance and high conductivity of copper, and meanwhile its comprehensive performance is high and its cost is more economical than pure copper grounding device, it has been widely used in UHV lines, petrochemical industry, nuclear power and high-speed railway, especially in key projects in recent years.
Copper-clad steel:
The material in which the surface of a steel core is uniformly coated with copper includes copper-clad steel bars (for vertical grounding electrode only), copper-clad steel tape, and copper-clad steel wires (including round wires and stranded wires). According to the production process, it can be divided into continuous casting copper-clad steel and electroplating copper-clad steel.
CCS Round Wire
Development of copper-clad steel grounding device
With the increasing voltage level of power lines and the increasing capacity of the system, higher requirements are put forward for the safety and reliability of grounding devices.
The traditional method in foreign countries is to use pure copper as the grounding material, but pure copper is expensive and it is a strategic resource, which is not suitable for being massively used as grounding devices in China. From 1910 to 1955, National Bureau of Standards (NBS) conducted corrosion resistance studies of grounding bodies. 36,500 samples collected at 128 test sites throughout the United States represented 333 metal materials consisting of iron, non-ferrous metals and protective coatings, respectively. The test results show that only steel bars and stainless steel bars with copper plating thickness over 0.5mm can be accepted.
In addition, continue the statistical data of 8 to 30 years and take the test results of 43 copper samples in different soils, 41 of which were calculated, to get the 0.17mm average pitting depth of 30 years. Therefore, some international standards have determined the thickness of copper coating of copper-clad steel material to be at least 0.25 mm. Considering the hard friction during construction, it is suggested that the thickness of copper coating be defined as 0.5-0.8 mm.
In China, copper clad(copperweld) steel materials are widely used in substation grounding grids in areas with high soil resistivity. Because of the characteristics of UHV project, such as high voltage level, large capacity and short power cut window period, combined with the corrosion intensity of groundwater in the area, copper-clad steel grounding devices have been applied in UHV lines and many UHV lines in China use copper-clad steel materials as grounding bodies.
Development of copper-clad steel grounding device
Comparison between copper-clad steel grounding and traditional hot-dip galvanized steel grounding device
1. Corrosion rate comparision
Annual corrosion rate of grounding materials in some place of Beijing and Tianjin
MaterialBeijing LiangxiangTianjing Dongli
Stainless stell0.0020.003
Pure coper0.0010.001
Copper-cald stell0.0010.001
Galvanized steel0.1760.2
The test results show that galvanized steel has the most serious corrosion and its corrosion rate is more than 50 times higher than that of pure copper; the corrosion degree of stainless steel is much lower than that of pure copper and copper-clad steel, showing good corrosion resistance; as a copper-steel composite material, the self-corrosion potential of copper-clad steel in soil is basically the same as that of pure copper, and its corrosion rate is the same as that of pure copper; the corrosion rate of the electroplated copper-clad steel with thinner coating is higher than that of the continuous casting copper-clad steel with thicker coating.
2. Analysis and comparison of physical performance in short circuit
If the conductivity of copper were 100% and the conductivity of standard 1020 steel were only 10.8%, the conductivity of copper would be about 10 times that of steel. However, the conductivity of the 30% conductivity copper-clad round wire would be 30%, and the conductivity of the 40% conductivity copper-clad round wire would be 40%, which would be far better than the steel grounding body. Especially under skin effect, the conductivity of copper-plated strands at high frequencies would be much better than that of steel, that is, the conductivity of copper grounding body would be better than that of steel grounding body. The melting point of copper is 1083℃ and the maximum allowable temperature during short circuit is 450℃ ; the melting point of steel is 1510℃ and the maximum allowable temperature during short circuit is 400℃. Therefore, when the grounding body has the same cross section, the copper-clad steel grounding material has better thermal stability.
3. Economic comparison
According to Appendix D of Technical Conditions for Copper-clad Steel for Grounding in Electrical Engineering, the corrosion rates of copper clad steel in different soils are calculated according to the reference values in table. Corrosion rate of pure copper under different soil corrosion grades (mm/a)
Soil corrosion gradeLa extremely weak corrosionLb Weak corrosionII Strong corrosionIII Extremely strong corrosion
Corrosion rate0.0004-0.0010.001-0.0040.004-0.0070.007-0.021
The 0.8mm copper plating thickness is enough to meet the requirement of 60 years of service under the grade of III extremely strong corrosion.
The corrosion rate of galvanized steel is nearly 50 times that of copper-clad steel under the same soil conditions, and the grounding body should be overhauled after being used for 3-5 years.
The State Grid has accounted the UHV tower according to the drawings: after the investigation of the market price of material during the construction, the market price of the copper-clad-steel grounding body is calculated at RMB 20 /m, the market price of φ12 galvanized-steel round steel grounding body is calculated at RMB 6 /m and the grounding body laying is calculated according to the grounding construction drawing. During the 30-year whole life cycle, galvanized steel is overhauled every 5 years, of which the cost of material is RMB 20 /m for copper-clad steel and RMB 36/m for galvanized steel, that is, only material cost can be reduced by 80%. Galvanized steel can be overhauled and replaced six times. If the construction cost is RMB 70 /m3 for earthwork and stone works and each base tower is calculated by 23 m3 for excavation, RMB 9660 per base tower will be saved.
Copper-clad steel construction
The horizontal laying of the copper-clad steel grounding device is the same as that of the ordinary galvanized round steel, where only the connection method is changed to hot-melt welding, which has reduced the contact resistance between the joints and is more conducive to the release of lightning current.
Copper-clad steel constructionCopper-clad steel construction
Exothermic welding, also known as "aluminum heat welding", is a simple, high-efficiency, high-quality metal joining process that has been mass-produced and used in China in recent years. Exothermic welding uses chemical reaction heat of metal compounds as heat source and through superheated (reduced) molten metal or indirect heating, a certain shape and size of the melted joint is formed in the cavity of the special graphite mould, which meets the engineering requirements, and finally through cooling and condensation, the welding process is realized. At present, exothermic welding has generally replaced the mechanical connection between metals in the past.
Advantages of copper-clad steel
1.It has strong corrosion resistance and will not be disjointed, warped or cracked. The corrosion in the grounding body of the grounding grid is reduced, which has improved the overall operational safety of the equipment;
2. It has good electrical conductivity and stable electrical performance;
3. The copper layer and the steel bar achieve molecular bonding, and the grounding bar will not break down when it penetrates into the soil.
4. The copper-clad-steel grounding material used has high efficiency of reducing the resistance, and the length of the horizontal grounding body is reduced by 1/3 for the design of the high-resistance section, greatly reducing the excavation amount of the earthwork;
5. The design and use of exothermic welding technology is very suitable for the needs of field construction, greatly improving work efficiency and effectively shortening the construction period.
Performance parameters of copper-clad steel wire
Copper layer thickness:0.8mm; tensile strength: greater than 500MPa; copper-clad steel bent 180° without peeling off copper layer.
Specification of 0.8mm series copper-clad round steel: Soft copper-clad round bars are generally packaged in hanks or rolls, 100 meters per roll, easy to transport, suitable for laying of large grounding grids and horizontal grounding lines.
Usage:key projects, large grounding grids and horizontal grounding wires in industries with higher lightning protection requirements, etc.
Model No.Dimeter(mm)Copper Layer(mm)
BSD-GW-R10S100.8/0.5/0.25
BSD-GW-R12S120.8/0.5/0.25
BSD-GW-R14S140.8/0.5/0.25
Note:
1. If the thickness of copper layer is required to be 1 mm, please contact us directly.
2. We undertake custom-made zinc-clad steel ground rod and round steel.
Production method of copper clad steelProduction method of copper clad steel
Production method of copper clad steel technical field The invention specifically relates to a production method of copper clad steel.
Background technologycopper clad steel
The conductivity of existing copper clad steel products is not good, far inferior to that of pure copper products. The reason is that the overall product performance is insufficient when copper is coated on steel materials in the process.
Summary of the invention
In view of the above technical problems, the invention provides a production method of copper clad steel.
A copper clad steel production method comprises the following steps:
A. Surface treatment of steel wire;
B. Stripping and wire drawing of the treated steel wire;
C. Straightening and polishing the treated steel wire.
D. Heating the treated steel wire to 300-400 degrees.
E. Melting copper into water in high temperature furnace.
F. The steel wire in step D is coated with copper water in step E and then cold crystallized to form the product.
Preferably, the steel wire surface treatment in step A is a mechanical grinding treatment without water contamination.
The invention provides a production method of copper clad steel. The conductivity of the product obtained by the method is close to that of the pure copper product, the cost is greatly reduced, and the service life is prolonged.
Feeling Grounded
Ceramic grounding conductors for a radio antenna tower. Radios are a very important tool here in the Congo
We were here just a few hours before some madman damaged the control tower and had flights disrupted for a couple of days. Photo taken at 2014:09:26 00:34:46
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A communications contractor assigned to the Aurora FAA radar center set fire to the center, grounding more than 2,000 flights in Chicago today (26 September 2014), as part of plan to “take out” the center and kill himself, according to a federal complaint against him. Brian Howard, 36, of Naperville, remains hospitalized following the incident, and is charged with setting fire to and damaging an air navigation facility.
Just before he set the fire, Howard posted a Facebook message saying “Take a hard look in the mirror, I have. And this is why I am about to take out ZAU (the radar center) and my life…So I’m gonna smoke this blunt and move on, take care everyone,” according to an affidavit from an FBI agent filed as part of the complaint.
The fire was started in the basement of the Aurora facility, known as the Chicago Center, around 5:40 a.m., forcing an evacuation and grounding all flights at O'Hare and Midway airports. Some flights were resumed "at a reduced rate" around 10:30 a.m.
The center handles high-altitude traffic across parts of the Midwest. Controllers there direct planes through the airspace and either hand off the air traffic to other facilities handling high-altitude traffic or direct the planes to terminal radar facilities, including one in Elgin, which in turn direct planes to and from airport towers.
Howard has worked for an FAA contractor at the Aurora facility for about eight years, handling communications there, and worked in the basement, according to the complaint. The complaint mentions that Howard had recently been told that he was to be transferred to Hawaii, but does not say that investigators have evidence the transfer played a part in what prosecutors allege Howard did Friday.
One of the paramedics and another emergency official followed the blood trail to where a floor panel had been pulled up, exposing telecommunications cables and other wires. They found a gas can and gas can nozzle and towels that looked as though they had been burned, and continued to follow the blood trail until they came to a knife and a lighter lying on the floor.
The paramedic then saw Howard’s feet sticking out from under a table, and saw Howard under the table, shirtless and in the act of cutting his own throat, according to the complaint. Howard also had knife wounds on his arms.
The paramedic pulled the knife from Howard, and the paramedic and the other emergency worker started to treat Howard, who told them “leave me alone,” according to the complaint.
"They attempted to get him out of the building, there was some degree of effort to drag him out," said Aurora Fire Chief John Lehman. Paramedics took Howard to an Aurora hospital. The center was closed following the fire and 15-30 people were evacuated. One employee, a man about 50 years old, was treated at the scene for smoke inhalation (Chicago Tribune).
The grounding pin in an appliance will prevent many electric shocks from wiring faults, as the low resistance between the electric wires and the ground will cause a current large enough to trip a circuit breaker. But a home circuit breaker won't trip until you get to at least 15 A, and unfortunately, a current of less than 0.1 A can be enough to kill someone.
Fortunately, a device called a Ground Fault Circuit Interrupter (GFCI) exists. You see it as the "Test" and "Reset" buttons on some electrical outlets, hair dryers, and hedge-trimmers. It checks that the current in the two wires in the circuit is the same. If it isn't, that means current from one of the wires must be "leaking" through an alternate path to ground. That's probably not a good thing, as the leaking current may be through a person, so it turns off the circuit. US Building codes have progressively mandated more and more GFCIs in homes since the 1960s, with most focus on places where electrical appliances and water can come into contact.
If your GFCI continuously trips, it either means it has gone bad, or that you've got a ground fault in one of the outlets it is protecting (it can protect several, as shown in this diagram. Check and make sure, and have a qualified person look at your wiring if you can't figure out the problem. You should also test your GFCI's monthly by pressing the "Test" and then "Reset" buttons.
Got the anxiety jitters half way through a very long phone call and I couldn't get up and walk around cuz I was taking notes, so the moment it ended I just pegged it outside and threw myself on the grass - it totally did the trick! I got loads of work done today, plus I've now go a plan of action for what to do at home and a deadline so I'm feeling much better.
I am up very late cuz I finished all 19 of my watercolours and I wanted them sent by yesterday, so I've done a quick 2am dash to the post box and I hope they arrive before the weekend! Fingers crossed! not a big deal if they don't, but still, it would be nice.
Gaaaahhhh I shall not be fit for work tomorrow, whoops! Not that admin takes a great deal of brain power, but I am concerned I shall get the morbs if I'm very tired... eh I'll just go to bed earlier no biggy.
As I probably say much too often, I'm absolutely in love with culture of all varieties... And I'm even more impressed when people bring those cultures to a hub like Canada, and hold onto their values, customs, and traditions so vividly, even whilst being immersed in a rather cultureless society.
The symbol I've used above to portray culture is perhaps a little stereotypical, but it's the only thing I could think of to visually represent the extra-cultural behaviours this woman exhibited as she traversed the streets of our culturally-boring city. She had the most gentle aura about her, utmost respect for everyone she passed (even those who didn't even make eye contact) and performed various activities and rituals while I was beside her for a block or so.
I just think it's extraordinary that, even after probably decades of removal from her cultural immersion, she's still maintained such a strong hold on everything she identifies with. It's awesome to see! I wish I was more rooted in culture -- I'm Ukrainian, and all I can identify with from my culture are perogies! :P
130129-N-ZZ999-033
SULU SEA (Jan. 29, 2013) Heavy waves crash against the grounded mine countermeasure ship USS Guardian (MCM 5), which ran aground on the Tubbataha Reef in the Sulu Sea on Jan. 17. The grounding and subsequent heavy waves constantly hitting Guardian have caused severe damage, leading the Navy to determine the 23-year old ship is beyond economical repair and is a complete loss. With the deteriorating integrity of the ship, the weight involved, and where it has grounded on the reef, dismantling the ship in sections is the only supportable salvage option. The U.S. Navy continues to work in close cooperation with the Philippine Coast Guard and Navy to safely dismantle Guardian from the reef while minimizing environmental effects. (U.S. Navy photo/Released)
"Most people, even in this scientific age, are totally unaware of their bioelectrical nature. Practically no one has the slightest notion of an electrical or energetic connection between his or her body and the Earth. Nobody learns about it in school. So nobody knows that we have largely become disconnected and separated from the Earth. In developed societies, in particular, we have essentially lost our electrical roots. Our bare feet, with their rich network of nerve endings, rarely touch the ground... As an analogy, think of a lightbulb with a loose connection. The bulb flickers, shines weakly, or doesn’t light up at all. Many people go through life with flickering or weak health."
[Earthing:The Most Important Health Discovery Ever?]
Writing on the back reads: "The Schooner Nancy driven ashore on Nantasket beach in the big storm on Feb. 20, 1927"
For more information about the grounding, see Wreck of the Nancy.
Gift of Eleanora Grant. In the collection of the Hingham Historical Society [2015.21.2].
On the second day after the grounding a crew works to try to recover the Jamie K. but by nightfall they had had no success.
On the evening of Monday, July 20th, 2015, this 65 foot shrimp boat out of Charleston in Coos County, Oregon, hit some rocks while maneuvering through a hazardous area called the "Little Hole" to reach a good fishing area. A U.S. Coast Guard rescue swimmer was able to get all four crew members safely to shore during the night one at a time. Recovering the boat is proving to be a challenging task.
PRINCESS S.S. SOPHIA ON VANDERBILT REEF
Date: October 24, 1918
Source Type: Postcard
Publisher, Printer, Photographer: Winter-Pond Company (Juneau)
Postmark: None
Collection: Steven R. Shook
Remark: The SS Princess Sophia was a steel-built coastal passenger liner in the coastal service fleet of the Canadian Pacific Railway (CPR). Princess Sophia was built for CPR during 1910-1911.
On October 25, 1918, the Sophia sank with the loss of all aboard after grounding on Vanderbilt Reef in Lynn Canal near Juneau, Alaska. With 343 or more people lost, the wreck of the Princess Sophia was the worst maritime accident in the history of British Columbia and Alaska. The circumstances of the wreck were controversial, as some felt that all aboard could have been saved.
Copyright 2011. Some rights reserved. The associated text may not be reproduced or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without prior written permission of Steven R. Shook.
Western Mariner, an 83-foot inspected tug, ran aground in Neva Strait March, 21, 2022, while towing Chichagof Provider, a 286-foot containerized barge. No injuries were reported, and all fuel manifolds on board the tug were secured to isolate the ruptured tank. A Unified Command comprised of the Coast Guard, Alaska Department of Environmental Conservation, and Western Towboat has been established. U.S. Coast Guard photo by Petty Officer 1st Class Brian Wereda.
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