Runaway and main-track derailment : Train parti à la dérive et déraillement en voie principale : train de marchandises MMA-002 de la Montreal, Maine and Atlantic Railway, au point milliaire 0,23 de la subdivision Sherbrooke, Lac-Mégantic (Québec), le 6 juillet 2013

The Nantes Fire Department responded to the call and arrived on site, and the Sûreté du Quebec (SQ) called the Farnham RTC to inform the company of the fire. [...] Both the firefighters and the track foreman were in discussion with the Farnham RTC to report on the condition of the train. [...] On 30 June 2013, when the train was in Harvey, North Dakota, 1 tank car was removed for a mechanical defect after the train received a safety inspection and a Class I air brake test.8 This air brake test verifies the integrity and continuity of the brake pipe, as well as the brake rigging, the application, and the release of air brakes on each car. [...] During site examination, the following was noted: · There was no damage to the track between the derailment site and the location of the locomotives. [...] Because the main reservoir supplies air to the entire system, when its pressure falls to the level of that in the brake pipe, the pressure in both components will thereafter diminish at the same rate.