Investigators survey the site of a train derailment near the hamlet of Gainford, west of Edmonton. Propane continues to burn from ruptured tanker cars. REUTERS/Dan Riedlhuber
CN continues to burn off propane from a ruptured tanker car, more than three days after the train carrying oil and propane derailed.
Firefighters are flooding the car with water in the hope the propane will rise to the top of the car and burn off more quickly.
Shortly after 5 p.m. MT Monday, CN tried for the second time to use explosives to puncture the derailed cars to help burn off the propane, but shortly after 7 p.m., it found one tank car still contained almost 57,000 litres of propane.
CN intended to start a third control burn, but when officials discovered the propane tank car was flaring just before 9 p.m., officials decided to pump water into the tank to hasten the burn-off.
Fire crews began pouring water into the tank before 7 a.m. Tuesday.
CN said it will not predict when 126 residents can move back into their homes near the derailment site near Gainford, 80 kilometres west of Edmonton.
Three investigators from the Transportation Safety Board are expected to be on site later today.
The board reported the train's emergency brake was applied during the derailment on the Gainford siding.
An inspection revealed that cars 13 through 25 left the track, coming to rest on their side.
CN has said the 134-car train was travelling to Vancouver from Edmonton at a normal speed of 35 km/h when 13 cars left the tracks.
The Yellowhead Highway — the main east-west corridor in northern Alberta, connecting Edmonton with Jasper — remained closed at the derailment scene Tuesday.