The subsequent rapid deceleration, TSB says, “resulted in the block of heavy loaded cars at the tail end of the train running into the empty cars near the center, leading to the derailment of 15 empty cars in the Upper Spiral Tunnel.”
In response, the locomotive engineer “made a full-service brake application, as required by operating rules, and applied the locomotive dynamic brakes to bring the train to a controlled stop,” according to the report (download below). According to TSB, while descending Field Hill, a section of track known for its steep grades and sharp curves, “an in-cab alert activated as the front end of the train was exiting the Upper Spiral Tunnel, indicating a train-initiated UDR,” which occurs when the air pressure in a train’s brake pipe spontaneously increases, causing the automatic release of the air brakes. On the morning of January 3, 2019, a mixed-merchandise CP (now CPKC) freight train, hauling 159 rail cars, including 13 carrying dangerous goods, departed Calgary, Alberta, destined for Port Coquitlam, BC. The Transportation Safety Board of Canada (TSB) on July 19 released its investigation report into the January 2019 Canadian Pacific (CP) freight train derailment in the Upper Spiral Tunnel, near Field, British Columbia (BC), citing the undesired release of air brakes (UDR) as the cause. 150 Years Ago Today – The Cable Car is Born.Transit Briefs: MBTA, Montreal REM, OC Transpo, LA Metro.Railway Age: August 2023 Digital Edition On Line.Nominations Open for 2023 Women in Rail Awards.Amtrak Seeks $873MM in FRA CHIP Funding.Transit Briefs: East-West Rail, MBTA, Metra, NYMTA, SEPTA.Used in the isolation of: Neisseria meningitides 13090, Staphylococcus epidermidis 12228, Streptococcus pneumoniae 6305, Streptococcus pyogenes 19615, Aspergillus brasiliensis (niger) 16404, Bacillus subtillis 6633, Candida albicans 10231, Escherichia coli 8739, Pseudomonas aeruginosa 9027, Salmonella enterica subsp.Because of its capacity for growth promotion, TSB is also recommended for use as the inoculum broth for disc diffusion and agar dilution antimicrobial susceptibility testing as standardized by the Clinical and Laboratory Standards Institute (CLSI).TSB is recommended for testing bacterial contaminants in cosmetics and complies with established standards in the food industry.TSB was chosen by the USDA Animal and Plant Health Inspection Service for detecting viable bacteria in live vaccines.This formulation is included in the USP as a medium for use in performing microbial enumeration tests and tests for specified microorganisms when testing nonsterile pharmaceutical products.TSB is a nutritious medium that will support the growth of a wide variety of microorganisms, including common aerobic, facultative and anaerobic bacteria and fungi. Tryptic Soy Broth (Soybean-Casein Digest Medium) is a general purpose medium used in qualitative procedures for the cultivation of fastidious and non-fastidious microorganisms from a variety of clinical and nonclinical specimens.
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