UPDATE 3-Freight train derails, sparks fire in Pennsylvania; residents flee

(New throughout, adds background about previous CSX derailments)

Aug 2 (Reuters) - A CSX Corp freight train carrying flammable materials derailed as it moved through a southern Pennsylvania town on Wednesday, striking a residential garage that caught fire, forcing more than 100 residents from their homes, authorities said.

No injuries were reported after the crash in Hyndman, about 100 miles southeast of Pittsburgh, but CSX warned customers service disruptions would last for a week over a nearly 80-mile stretch between Connellsville, Pennsylvania, and Cumberland, Maryland.

At least six cars derailed as the train was passing through the town of fewer than 1,000 residents just before 5 a.m., said Harry Corley, an emergency management coordinator in Bedford County. A freight car skidded into a garage that caught fire and train cars were still burning several hours later, he said.

More than a dozen fire crews have responded from different areas of Pennsylvania and Maryland, Corley said. He said authorities ordered the evacuation of residents in a one-mile radius, encompassing most of the town. Local news footage showed train cars snaking across the ground in flames behind a house and a leveled garage.

CSX said 32 cars derailed. At least one contained liquefied petroleum gas and another contained molten sulfur, which leaked and was on fire.

This was the third derailment for a CSX train since last November. It came two days after CSX Corp CEO Hunter Harrison apologized to customers for service disruptions and said some railroad employees were resisting planned cost-cutting measures.

Authorities closed roads and issued temporary restrictions on low-flying aircraft, Pennsylvania Governor Tom Wolf's office said. No public water supplies or waterways were affected, his office said.

An emergency shelter was assembled at a local school. Aid workers from the American Red Cross and the Salvation Army were called in, Corley said.

The train of five locomotives and 178 rail cars was traveling from Chicago to Selkirk, New York, CSX said. It said 128 cars carried mixed freight, including the flammable materials along with construction materials, paper and wood pulp. There were 50 empty rail cars. CSX said company hazardous materials experts were working with firefighters at the scene to contain leaks and minimize environmental damage. The National Transportation Safety Board said it was sending a six-person team to investigate the derailment and propane tank car fire.

In March, a CSX freight train containing hazardous materials partially derailed near Newburgh, New York. The cars with dangerous substances were not breached.

Last November, two CSX trains collided and derailed in central Florida, injuring two crew members.

Harrison, the CSX chief executive officer known for turnarounds at Canadian railroads, told customers that some employees were resisting aggressive cost-cutting measures at the No. 3 U.S. railroad which, according to a shipper survey, has been losing business to rivals. (Additional reporting by David Shepardson in Washington and Jarrett Renshaw in New York; Editing by David Gregorio)