EDMONTON, May 25, 2017 /CNW/ - The Transportation Safety Board
of Canada (TSB) today released its investigation report (R15E0173)
into a 2015 Canadian Pacific Railway (CP) derailment at Scotford
Yard near Fort Saskatchewan, Alberta, citing that a crew member did
not observe a switch lined against the movement which subsequently
damaged the switch.
Improperly lined switch
, at about 1515
Mountain Standard Time
, a CP switching assignment, which was
being operated by a remote control locomotive system, derailed four
loaded tank cars while performing switching operations at Scotford
Yard. The derailed tank cars contained styrene monomer, a flammable
liquid. Two cars remained upright, one car came to rest on its side,
and one car rolled into a ditch, coming to rest upside down and
releasing most of its contents. The majority of the product was
recovered and disposed of during the initial response and through
the removal of the contaminated soil during site remediation. There
were no injuries.
The investigation determined that the
forward movement of the train through a switch that was lined
against the movement had damaged the switch. Unaware that the switch
had been damaged, the crew then reversed the movement over the
damaged switch, resulting in the derailment of four tank cars. The
investigation found that the crew member on the leading end of the
movement did not observe the visual cues indicating that the switch
was lined in the opposite direction from the intended route.
Following the occurrence, CP initiated a number of safety
actions including increasing performance monitoring, implementing
pre-shift briefings, and providing mentoring and coaching sessions
to ensure improved efficiency.The transportation of flammable
liquids by rail is a TSB
As this occurrence demonstrates, the transportation of flammable
liquids by rail across North
created an elevated risk that needs to be mitigated effectively.
Based on this investigation and previous ones, Board
recommendations, and other safety communications, the TSB reiterates
that flammable liquids must be shipped in more robust tank cars to
reduce the likelihood of a dangerous goods release during accidents.
See the investigation
The TSB is an independent
agency that investigates marine, pipeline, railway and aviation
transportation occurrences. Its sole aim is the advancement of
transportation safety. It is not the function of the Board to assign
fault or determine civil or criminal liability.
Transportation Safety Board of Canada
information: Transportation Safety Board of Canada, Media Relations,