Officials investigate into U.S. nuke reactor failureJanuary 31, 2012 - 14:02 AMT PanARMENIAN.Net - Officials are investigating the events surrounding a power failure at a nuclear reactor in northern Illinois, where steam was vented to reduce pressure after it shut down, AP reported. After the shut down Monday, Jan 30, morning at Exelon Nuclear's Byron Generating Station, operators began releasing steam to cool the reactor from the part of the plant where turbines are producing electricity, not from within the nuclear reactor itself, officials said. The steam contains low levels of tritium, a radioactive form of hydrogen, but federal and plant officials insisted the levels were safe for workers and the public. Diesel generators were supplying the reactor with electricity, though it hasn't been generating power during the investigation into what happened. One question is why smoke was seen from an onsite station transformer, though no evidence of a fire was found when the plant's fire brigade responded, U.S. Nuclear Regulatory Commission spokeswoman Viktoria Mitlyng said. Exelon Nuclear officials believe a failed piece of equipment at a switchyard at the plant about 95 miles northwest of Chicago caused the shutdown, but they were still investigating an exact cause. The switchyard is similar to a large substation that delivers power to the plant from the electrical grid and from the plant to the electrical grid. The commission declared the incident an "unusual event," the lowest of four levels of emergency. Commission officials also said the release of tritium was expected. Tritium molecules are so microscopic that small amounts are able to pass from radioactive steam that originates in the reactor through tubing and into the water used to cool turbines and other equipment outside the reactor, Mitlyng said. The steam that was being released was coming from the turbine side. Tritium is relatively short-lived and penetrates the body weakly through the air compared to other radioactive contaminants. Top stories Azerbaijani President Ilham Aliyev arrived in Moscow on April 22 to hold talks with Russian counterpart Vladimir Putin. Authorities said a total of 192 Azerbaijani troops were killed and 511 were wounded during Azerbaijan’s offensive. In 2023, the Azerbaijani government will increase the country’s defense budget by more than 1.1 billion manats ($650 million). The bill, published on Monday, is designed to "eliminate the shortcomings of an unreasonably broad interpretation of the key concept of "compatriot". Partner news | U.S., Armenia sign customs deal According to Armenian customs data, U.S.-Armenian trade reached $670 million last year. Glendale mayor to visit Yerevan Asatryan last visited Armenia in December 2022-January 2023 as she helped establish a partnership between Armenia’s Opera House and Los Angeles Opera. Ucom’s fixed network launches in Nor Hachn City residents will be able to use fixed-line Internet, mobile communications and television in one package at more affordable prices. Ambassador summoned to Russia returns to Armenia Sergei Kopyrkin has returned to Yerevan more than two weeks after being recalled to Moscow for consultations. |