Re: Beresfield Accident Findings

["Tezza" <tezza@atinet.com.au>]

Jeff Schmidt wrote in message <354d2aba.0@tpgi.com.au>...

>>>>>And you are suggesting that it is OK to put a several-thousand-tonnes
>>>>>train into full emergency with no fear of adverse consequences?


>>>>I've done it plenty of times and never had a problem. FreightCorp
>>>>obviously don't consider it a problem either or there'd be all sorts of
>>>>Safeworking procedures to cover it. There's never even been a General
Order >>>>about it that I'm aware of.

>>>Every rail company that I do business with in Australia and North America
>>>all have procedures in place for emergency applied brakes. Namely walk
the
>>>train.



>>Then you've obviously never done business with FreightCorp.



>I’m very curious as to why FreightCorp have no problems when it to comes
>emergency braking. To help clarify why this isn’t a problem….

>1. What type of locomotive brake valve is used?


B-7, 26L, EC-30 (?), and a couple of A-7's still on heritage locos I think.

>2. What brake pipe pressure is normally used?



500kpa.

>3. What type of control valve is used on FreightCorp rollingstock?
>4. What is the propagation rate for this control valve both in service and
>emergency?
>5. What features does this control valve have to increase
>propagation/application/recharge rates?
>6. What is the brake cylinder build up rate for a service and emergency
>brake applications?
>7. What type of load sensing device is used?
>8. What type of brake assembly is used?
>9. What type of draft gear and draft gear cushioning devices are used?
>10. What is the length/weight/makeup of these trains that are immune to the
>adverse effects of emergency applications?


One truck - 62 trucks; 12 metres - 1,550metres; loaded, empty, mixed. 12T to
4,200T. All and any kind of train in other words.

>11. In what context, with regards to train handling management and
>procedures, is emergency used?



If ya need it, use it!

>Thanks in advance for your time.


Not a problem. Hopefully someone more conversant with technicalities can
fill in the blanks.