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The occurrence of the general relativistic instability, as well as the absence of the intermediate stellar phase, led to the denomination of direct collapse black hole. In other words, these objects collapse directly from the primordial gas cloud, not from a stellar progenitor as prescribed in standard black hole models. [15]
FE's situational awareness was reduced by the development of faults in its General Electric Harris XA21 energy management system (EMS) from 2:14 p.m. to 2:54 p.m. The alarm and logging software in the control room failed first, followed by some remote terminals and data links, then the primary and backup EMS servers.
14 September—Nigeria—a "total system collapse" resulted in widespread blackouts that affected the entire country. [293] 20 September—Tunisia—a "sudden breakdown" at the Radès power station in the southern suburbs of Tunis caused a nationwide power outage that lasted for up to four hours. [294] 9 December—2023 Sri Lankan blackouts [295]
Energy fatalities can occur, and with many systems deaths will happen often, even when the systems are working as intended. Historically, coal mining has been the most dangerous energy activity and the list of historical coal mining disasters is a long one. Underground mining hazards include suffocation, gas poisoning, roof collapse and gas ...
Paul Kennedy posits that continued deficit spending, especially on military build-up, is the single most important reason for decline of any great power. The costs of the wars in Iraq and Afghanistan were as of 2017 estimated to run as high as $4.4 trillion, which Kennedy deems a major victory for Osama bin Laden, whose announced goal was to humiliate America by showcasing its casualty ...
The 1996 Western North America blackouts were two widespread power outages that occurred across Western Canada, the Western United States, and Northwest Mexico on July 2 and August 10, 1996. They were spread 6 weeks apart and were thought to be similarly caused by excess demand during a hot summer.
However, wind energy accounts for only 23% of Texas power output. [48] Moreover, equipment for other energy sources such as natural gas power generating facilities either freezing up or having mechanical failures were also responsible. [47] Governor Abbott later acknowledged that coal, natural gas, and nuclear plants had played a role. [47]
The Senate Committee on Energy and Natural Resources held a hearing in October 2018 to examine "black start", the process of restoring electricity after a system-wide power loss. The hearing's purpose was for Congress to learn about what the backup plans are in the electric utility industry in the case that the electric grid is damaged.