Wednesday, November 23, 2011

550 customers without electricity

Defect in substation lead to load shedding.
Kappel-Grafenhausen / MAHLBERG-Orschweier (BZ). Yesterday morning, it
is 4.41 clock to come in the districts Grafenhausen
(Kappel-Grafenhausen) and Orschweier (Mahlberg) to a power
interruption. Grafenhausen a technical failure occurred in a 20 000
volt substation at 18 Commercial Street. At the same time dissolved in
the industrial area Orschweier security institutions due to a faulty
underground cable, said the utility EnBW.
After 40 minutes at first to re-power
The emergency services are immediately moved out of EnBW to locate
the fault and restore power by switching the power supply gradually
restored. These were partly supplied again after 40 minutes the first
customers. For about 30 network customers in the immediate vicinity of
the affected substation in the industrial area Grafenhausen had more
work to be done in the low voltage network, until they were able to
move back to 7.45 clock electricity. A total of approximately 550
power customers were affected.

Wednesday, August 11, 2010

Power cuts spoil the Arabs summer

 An Iraqi electricians working on power cables and a tangle of wires in Baghdad. In many Arab countries, it always comes back to power outages. Photo: dpa
Baghdad / Beirut / Cairo. Samar Hassan fed up with the power cuts that plague their neighborhoods in the Lebanese capital Beirut regularly. Samira Ahmed The Egyptian, each time a sinking feeling in my stomach when her husband moved into their slum on the outskirts of Cairo in perilous heights cable to drain to electricity for the common budget. In Iraq, in turn, led angry protests from the public against the constant blackouts in bloody clashes with security forces. In June, while one protester died and dozens more were wounded - the electricity minister, had to resign.

During the summer in the Middle East from week to week will be hot and the temperatures in some places even to 50 degrees in the shade, climb the minds of the population because of the excruciating heat increasing electricity shortage. Somewhat peaceful relations and the global triumph of consumerism raise expectations with which the crumbling infrastructure in many Arab countries can not keep up.

The Affliction separates the social classes from each other. More and more members of the middle classes can afford air conditioners, refrigerators and other appliances that eat a lot of power - especially if they all crave the same time after a refrigerated room and a cold soda. For the poor, however, the current is often not even to their huts in the evening light have.

Thursday, August 5, 2010

Electricity and excavations

2. Existing utilities that cross the pipeline trench prevent shields
from being pulled forward. Pulling and resetting shields
around crossing utilities is time-consuming plus the area
around the crossing utility has to be shored in some other
way. In pit construction any existing line that crosses through
the hole is enough to prevent use of a shield.
Because most water, gas, and electric installations are
within the top 8 ft of the surface, it is possible to remove the
top shield and pull lower shields under the utilities. Shoring
or sloping still needs to be provided above the boxes.
S h o r i n g S y s t e m s S e l e c t e d f r o m Ta b u l a t e d D a t a 389
9.6.2 Shoring Shield Size and Nomenclature
The basic elements and nomenclature of a shoring shield are shown in
Fig. 9.30. Shoring shields and boxes are described by height × length ×
wall thickness. The wall thickness is nominal. Most shields are constructed
with 3/16-in plate “skin” over tube steel ribs so the actual
wall thickness is nominal size +3/8 in. Standard heights are 2, 4, 6, and
10 ft. Standard lengths are in 2-ft increments from 10 to 32 ft. Wall

Friday, February 19, 2010

Emergency and Backup Power Sources

Emergency and Backup Power Sources: Preparing for Blackouts and Brownouts
Not only for South Africans: Emergency and Backup Power Sources - Preparing for Blackouts and Brownouts provides invaluable information on emergency and backup power sources, as we deal with an aging power distribution system that often fails to provide reliable electrical power. The massive power outage in the summer of 2003 that affected eight states and parts of Canada exemplifies the importance of this topic.


Saturday, February 6, 2010

Loadshedding book review

Load-Shedding: Writing on and over the edge of South Africa
We are looking for a review of Load-Shedding: Writing on and over the edge of South Africa by Liz McGregor, Sarah Nuttall ...

Sunday, January 27, 2008

power cuts in South Africa

...Neighbours like Botswana and Namibia, which rely heavily on South African energy exports, have also been badly hit by the disruptions in the region's economic and political powerhouse. The outages have undermined confidence in South Africa, with incidents such as the stranding of hundreds of people on tourism icon Table Mountain because of a power cut gaining international media attention.

power cuts in South Africa

...Neighbours like Botswana and Namibia, which rely heavily on South African energy exports, have also been badly hit by the disruptions in the region's economic and political powerhouse. The outages have undermined confidence in South Africa, with incidents such as the stranding of hundreds of people on tourism icon Table Mountain because of a power cut gaining international media attention.
"The unprecedented unplanned power outages must now be treated as a national electricity emergency situation that has to be addressed with urgent, vigorous and co-ordinated actions," Public Enterprise Minister Alec Erwin told journalists after a cabinet meeting today. "We are viewing the next two years as being critical," he said, as government officials unveiled measures, including rationing, price hikes and a massive switch to solar power....






Source