DWBennett55
Member
The Canadian Pacific loaded grain was train stopped on a 2.2% grade. The brakes gave way, the train ran away and ended up derailing and killing the three crewmen.
Read the latest update here: http://www.bst-tsb.gc.ca/eng/enquetes-investigations/rail/2019/r19c0015/r19c0015.html
Follow the link near the bottom of the page to the 4/19/2019 advisory: http://www.bst-tsb.gc.ca/eng/securite-safety/rail/2019/r19c0015/r19c0015-617-04-19-20190411.html
which has a pretty detail explanation of what is, to date, known to have happened; especially what occurred prior to the runaway.
Those of you in the know can help us understand some of the terms and actions such as "set retainer valves to the HP position".
From a comment on a news post on another site (for you with a subscription to Trains magazine: http://trn.trains.com/news/news-wir...-struggled-with-train-involved-in-fatal-wreck), we have the CP rules for that portion of the line:
_____________
CP's Rules and Special Instructions already describe what is to be done. From CP Prairie Timetable No. 31, Laggan Sub, Nov. 28, 2012:
11.3 The train handling procedure on page 5/7, and the
following instructions in paragraphs A, B, C and D
apply to westward freight trains in which the weight
per operative brake is 100 tons or greater.
Note: All westward trains experiencing an emergency brake application beyond mile 123.5 must communicate with the on duty Trainmaster via the RTC
and be governed by their instructions.
A. Emergency brake recovery procedure – If an
emergency brake application is experienced between Stephen and mile 125.5, the train brakes
may be released and the train allowed to proceed to mile 125.5, where it must be stopped
and the brake pipe fully recharged. Trains
which are stopped between mile 125.5 and Signal 1363 Field with the train air brakes in emergency, must be governed as follows:
First Emergency Brake Application:
Before the emergency PCS is recovered, all
crew members (ie: locomotive engineer and
conductor and Trainmaster) must perform a job
briefing to discuss with each other the use of retainer valves. In the application GOI section 15,
item 14.3 and 29.3, set retaining valves to the
HP (high pressure) position on at least 75 percent of the loaded cars.
When discussing the use of retainers and/ or
hand brakes, consider train location, amount of
train on the mountain grade weather and rail
conditions and any other conditions present that
may affect the braking of that train. If abnormal
conditions such as weather or poor braking train
dictate that the application of hand brakes is
necessary to secure the train while re-charging,
then apply a hand brake on at least 75 percent
of the cars and set retaining valves to the HP
position on at least 75 percent of the loaded
cars.
Second Emergency Brake Application:
Apply retainers on 100% of the loaded cars and
40 hand brakes on the head end of train. Allow
the train to fully recharge the brake pipe.
Note: If there is doubt or uncertainty regarding
the continued operation of the train, then contact the RTC and request to speak directly to a
Trainmaster.
_______________
Pretty interesting.
Take care,
Read the latest update here: http://www.bst-tsb.gc.ca/eng/enquetes-investigations/rail/2019/r19c0015/r19c0015.html
Follow the link near the bottom of the page to the 4/19/2019 advisory: http://www.bst-tsb.gc.ca/eng/securite-safety/rail/2019/r19c0015/r19c0015-617-04-19-20190411.html
which has a pretty detail explanation of what is, to date, known to have happened; especially what occurred prior to the runaway.
Those of you in the know can help us understand some of the terms and actions such as "set retainer valves to the HP position".
From a comment on a news post on another site (for you with a subscription to Trains magazine: http://trn.trains.com/news/news-wir...-struggled-with-train-involved-in-fatal-wreck), we have the CP rules for that portion of the line:
_____________
CP's Rules and Special Instructions already describe what is to be done. From CP Prairie Timetable No. 31, Laggan Sub, Nov. 28, 2012:
11.3 The train handling procedure on page 5/7, and the
following instructions in paragraphs A, B, C and D
apply to westward freight trains in which the weight
per operative brake is 100 tons or greater.
Note: All westward trains experiencing an emergency brake application beyond mile 123.5 must communicate with the on duty Trainmaster via the RTC
and be governed by their instructions.
A. Emergency brake recovery procedure – If an
emergency brake application is experienced between Stephen and mile 125.5, the train brakes
may be released and the train allowed to proceed to mile 125.5, where it must be stopped
and the brake pipe fully recharged. Trains
which are stopped between mile 125.5 and Signal 1363 Field with the train air brakes in emergency, must be governed as follows:
First Emergency Brake Application:
Before the emergency PCS is recovered, all
crew members (ie: locomotive engineer and
conductor and Trainmaster) must perform a job
briefing to discuss with each other the use of retainer valves. In the application GOI section 15,
item 14.3 and 29.3, set retaining valves to the
HP (high pressure) position on at least 75 percent of the loaded cars.
When discussing the use of retainers and/ or
hand brakes, consider train location, amount of
train on the mountain grade weather and rail
conditions and any other conditions present that
may affect the braking of that train. If abnormal
conditions such as weather or poor braking train
dictate that the application of hand brakes is
necessary to secure the train while re-charging,
then apply a hand brake on at least 75 percent
of the cars and set retaining valves to the HP
position on at least 75 percent of the loaded
cars.
Second Emergency Brake Application:
Apply retainers on 100% of the loaded cars and
40 hand brakes on the head end of train. Allow
the train to fully recharge the brake pipe.
Note: If there is doubt or uncertainty regarding
the continued operation of the train, then contact the RTC and request to speak directly to a
Trainmaster.
_______________
Pretty interesting.
Take care,