Re: [NSW] Tangara Derailment , Hornsby

["KfFamilia" <Clave@idx.com.au>]

When you all talk about a signal sheet are you talking about a drivers yard
guide or the Signalling design sheet? and how hard is it to get one or the
other?

What is the difference between a Loop and a Refuge

What Places in the Cityrail Network has a "Platform Zero"

Platform One is Up Shore
Platform Two is Down Shore
Platform Three is Up Main
Platform Four is Down Main

and does anyone actaully work at or near Hornsby?


Steven
kffamilia@yahoo.com





<signal_spotter@my-deja.com> wrote in message
8lbdio$ln3$1@nnrp1.deja.com">news:8lbdio$ln3$1@nnrp1.deja.com...
> In article <y4Wd5.40881$N4.1548908@ozemail.com.au>,
>   "Chris Downs" <cvdowns@ozemail.com.au> wrote:
> > I have no track or signal diagrams.
> >
> > For the points immediately north of Hornsby on the down Shore
> (platform 3) I
> > thought each blade on the points was controlled separately.
> Therefore to
> > act as catch points both point blades held towards the centre putting
> a
> > passing train into the dirt.  The down departure signal on platform 3
> is
> > located just short of the end of the platform and the points in
> question are
> > virtually on top of the signal.
> >
> > I assume (time to make an ASS of U and ME) that this is what happened.
> >
> > Right or wrong?
> >
> > Chris
> >
> So did the accident happen on Platform 2 or 3. Platform 3 is the up
> main as pointed out. The points just north of that are not
> independantly controlled, they're called 'slips'. In other words it's 2
> sets of points in the one. And they're controlled by levers 521 and
> 522. At the north end of platform 3 the points are independantly
> controlled by levers 522 (the other end to the slips) and 524. Both of
> them can be normal and the train will fall in the dirt. With the slips
> there will always be a correct lie of the points so no matter what way
> they're lying a train shouldn't derail unless of course they
> become 'trailing' behind the train and it backs into them.
>
> regards Ian
> Signal Design Engineer and Hornsby expert
>
>
> Sent via Deja.com http://www.deja.com/
> Before you buy.