TODAY IN HISTORY

 

Nuclear disaster at Three Mile Island

At 4 a.m. on March 28, 1979, the worst accident in the history of the U.S. nuclear power industry begins when a pressure valve in the Unit-2 reactor at Three Mile Island fails to close. Cooling water, contaminated with radiation, drained from the open valve into adjoining buildings, and the core began to dangerously overheat.

The Three Mile Island nuclear power plant was built in 1974 on a sandbar on Pennsylvania’s Susquehanna River, just 10 miles downstream from the state capitol in Harrisburg. In 1978, a second state-of-the-art reactor began operating on Three Mile Island, which was lauded for generating affordable and reliable energy in a time of energy crises.

After the cooling water began to drain out of the broken pressure valve on the morning of March 28, 1979, emergency cooling pumps automatically went into operation. Left alone, these safety devices would have prevented the development of a larger crisis. However, human operators in the control room misread confusing and contradictory readings and shut off the emergency water system. The reactor was also shut down, but residual heat from the fission process was still being released. By early morning, the core had heated to over 4,000 degrees, just 1,000 degrees short of meltdown. In the meltdown scenario, the core melts, and deadly radiation drifts across the countryside, fatally sickening a potentially great number of people.

As the plant operators struggled to understand what had happened, the contaminated water was releasing radioactive gases throughout the plant. The radiation levels, though not immediately life-threatening, were dangerous, and the core cooked further as the contaminated water was contained and precautions were taken to protect the operators. Shortly after 8 a.m., word of the accident leaked to the outside world. The plant’s parent company, Metropolitan Edison, downplayed the crisis and claimed that no radiation had been detected off plant grounds, but the same day inspectors detected slightly increased levels of radiation nearby as a result of the contaminated water leak. Pennsylvania Governor Dick Thornburgh considered calling an evacuation.

Finally, at about 8 p.m., plant operators realized they needed to get water moving through the core again and restarted the pumps. The temperature began to drop, and pressure in the reactor was reduced. The reactor had come within less than an hour of a complete meltdown. More than half the core was destroyed or molten, but it had not broken its protective shell, and no radiation was escaping. The crisis was apparently over.

Two days later, however, on March 30, a bubble of highly flammable hydrogen gas was discovered within the reactor building. The bubble of gas was created two days before when exposed core materials reacted with super-heated steam. On March 28, some of this gas had exploded, releasing a small amount of radiation into the atmosphere. At that time, plant operators had not registered the explosion, which sounded like a ventilation door closing. After the radiation leak was discovered on March 30, residents were advised to stay indoors. Experts were uncertain if the hydrogen bubble would create further meltdown or possibly a giant explosion, and as a precaution Governor Thornburgh advised “pregnant women and pre-school age children to leave the area within a five-mile radius of the Three Mile Island facility until further notice.” This led to the panic the governor had hoped to avoid; within days, more than 100,000 people had fled surrounding towns.

On April 1, President Jimmy Carter arrived at Three Mile Island to inspect the plant. Carter, a trained nuclear engineer, had helped dismantle a damaged Canadian nuclear reactor while serving in the U.S. Navy. His visit achieved its aim of calming local residents and the nation. That afternoon, experts agreed that the hydrogen bubble was not in danger of exploding. Slowly, the hydrogen was bled from the system as the reactor cooled.

At the height of the crisis, plant workers were exposed to unhealthy levels of radiation, but no one outside Three Mile Island had their health adversely affected by the accident. Nonetheless, the incident greatly eroded the public’s faith in nuclear power. The unharmed Unit-1 reactor at Three Mile Island, which was shut down during the crisis, did not resume operation until 1985. Cleanup continued on Unit-2 until 1990, but it was too damaged to be rendered usable again. In the four decades since the accident at Three Mile Island, not a single new nuclear power plant has been ordered in the United States.

U.S. PRESIDENTS

1969

President Eisenhower dies

Dwight D. Eisenhower, the 34th president of the United States and one of the most highly regarded American generals of World War II, dies in Washington, D.C., at the age of 78. Born in Denison, Texas, in 1890, Eisenhower graduated from the United States Military Academy in 1915.

HISPANIC HISTORY

1939

Spanish Civil War ends

In Spain, the Republican defenders of Madrid raise the white flag over the city, bringing to an end the bloody three-year Spanish Civil War. In 1931, Spanish King Alfonso XIII approved elections to decide the government of Spain, and voters overwhelmingly chose to abolish the law.

ART, LITERATURE, AND FILM HISTORY

1958

W.C. Handy—the “Father of the Blues”—dies

“With all their differences, my forebears had one thing in common: if they had any musical talent, it remained buried.” So wrote William Christopher Handy in his autobiography in discussing the absence of music in his home life as a child. Born in northern Alabama in 1873.

WORLD WAR I

1915

First American citizen killed during WWI

On March 28, 1915, the first American citizen is killed in the eight-month-old European conflict that would become known as the First World War. Leon Thrasher, a 31-year-old mining engineer and native of Massachusetts, drowned when a German submarine, the U-28, torpedoed the Wave.

SPORTS

1984

Baltimore Colts move to Indianapolis

On March 28, 1984, Bob Irsay (1923-1997), owner of the once-mighty Baltimore Colts, moves the team to Indianapolis. Without any sort of public announcement, Irsay hired movers to pack up the team’s offices in Owings Mills, Maryland, in the middle of the night.

U.S. PRESIDENTS

1834

Congress censures President Jackson

On March 28, 1834, President Andrew Jackson is censured by Congress for refusing to turn over documents. Jackson was the first president to suffer this formal disapproval from Congress. During his first term, Jackson decided to dismantle the Bank of the United States.

CRIME

1814

Funeral held for the man behind the guillotine

The funeral of Dr. Joseph-Ignace Guillotin, the namesake of the infamous execution device, takes place outside of Paris, France. Guillotin had what he felt were the purest motives for inventing the guillotine and was deeply distressed at how his reputation had become besmirched.

CRIME

2006

Duke lacrosse team suspended following sexual assault allegations

Duke University officials suspend the men’s lacrosse team for two games following allegations that team members sexually assaulted a stripper hired to perform at a party. Three players were later charged with rape. The case became a national scandal, impacted by issues of race.

CIVIL WAR

1862

Union forces halt Confederates at Battle of Glorieta Pass

On March 28, 1862, Union forces stop the Confederate invasion of New Mexico Territory when they turn the Rebels back at Glorieta Pass. This action was part of the broader movement by the Confederates to capture New Mexico and other parts of the West. 

AMERICAN REVOLUTION

1774

British Parliament adopts the Coercive Acts in response to the Boston Tea Party

Upset by the Boston Tea Party and other blatant acts of destruction of British property by American colonists, the British Parliament enacts the Coercive Acts, to the outrage of American Patriots, on March 28, 1774.