Snow on the line
 

On Tue, 12 Dec 2017 13:05:47 +0000
Recliner wrote:
On Tue, 12 Dec 2017 12:26:33 +0000 (UTC), wrote:

On Tue, 12 Dec 2017 10:45:10 -0000 (UTC)
Recliner wrote:
wrote:
On Mon, 11 Dec 2017 16:24:05 -0000 (UTC)
Recliner wrote:
Mike Bristow wrote:
In article ,
wrote:
I'd lay a lot of money on the ****wits not listening to the weather
forecast
and not spraying deicer on the power rails or sending up a train with
any
kind of brush on it. Then next morning, "Oooo, theres snow on the rails,
train
won't move! Quick, lets blame the power supply and make it sound like
its
someone elses fault!"

So how would you describe a problem where the snow/ice prevents the power
from getting from the rail to train?


I don't think that was the problem. I think it was genuinely a power
supply
problem, as it also affected the Piccadilly line Uxbridge branch. Later,
when the Met line was running again, the Amersham branch continued to be
affected, and that might have been more to do with snow/ice on the running
and conductor rails.

A power supply problem which affected different lines on parts of the
network
seperated by 20 miles. Hmm, lets think about the likelyhood of that for a
second vs the didn't-bother-to-clear-snow-from-the-rails scenario...

Which "different lines on parts of the network seperated (sic) by 20
miles"?

Umm, amersham and cockfosters? Actually make that 25 miles.

I didn't say anything about Cockfosters. I mentioned the Piccadilly
line Uxbridge branch. I realise you're very parochial, but perhaps
even you know that Picc and Met share that branch.

So what? There were a number of "power supply problems" over the network.
Now either you're naive enough to believe all these substations failed due to
some snow, or alterntively its a load of BS to cover up not enough de-icing
trains being sent around the network. Take your pick.

Snow on the line
 

In article ,
Recliner wrote:
Epping and Amersham were both affected, and are about 30 miles apart
as the crow flies, and 44 miles apart by track kilometerage.

I mentioned Uxbridge, not Epping.

.... in the context of "power supply problems" - which may or may not have
been caused by iced-up conductor rails. Which were reported all over the
network:

https://twitter.com/centralline/stat...41391773061120
https://twitter.com/metline/status/939783801387061248
https://twitter.com/northernline/sta...67343521550336
https://twitter.com/jubileeline/stat...91679812505601

I can't think of an explaination for the widespread disruption that
/isn't/ ice-on-the-conductor rails - something like the national
grid being unable to supply sufficent current to LUL due to their
issues would have affected the victoria, circle and bakerloo too:
and they didn't report power supply problems.

What's a plausible alternative?

--
Mike Bristow

Snow on the line
 

Mike Bristow wrote:
In article ,
Recliner wrote:
Epping and Amersham were both affected, and are about 30 miles apart
as the crow flies, and 44 miles apart by track kilometerage.

I mentioned Uxbridge, not Epping.

... in the context of "power supply problems" - which may or may not have
been caused by iced-up conductor rails. Which were reported all over the
network:

https://twitter.com/centralline/stat...41391773061120
https://twitter.com/metline/status/939783801387061248
https://twitter.com/northernline/sta...67343521550336
https://twitter.com/jubileeline/stat...91679812505601

I can't think of an explaination for the widespread disruption that
/isn't/ ice-on-the-conductor rails - something like the national
grid being unable to supply sufficent current to LUL due to their
issues would have affected the victoria, circle and bakerloo too:
and they didn't report power supply problems.

What's a plausible alternative?


Problems with substations?

Snow on the line
 

On 2017\12\12 20:59, Recliner wrote:
Mike Bristow wrote:
In article ,
Recliner wrote:
Epping and Amersham were both affected, and are about 30 miles apart
as the crow flies, and 44 miles apart by track kilometerage.

I mentioned Uxbridge, not Epping.

... in the context of "power supply problems" - which may or may not have
been caused by iced-up conductor rails. Which were reported all over the
network:

https://twitter.com/centralline/stat...41391773061120
https://twitter.com/metline/status/939783801387061248
https://twitter.com/northernline/sta...67343521550336
https://twitter.com/jubileeline/stat...91679812505601

I can't think of an explaination for the widespread disruption that
/isn't/ ice-on-the-conductor rails - something like the national
grid being unable to supply sufficent current to LUL due to their
issues would have affected the victoria, circle and bakerloo too:
and they didn't report power supply problems.

What's a plausible alternative?


Problems with substations?


Aren't the substations on the deep lines just as exposed to the weather
as the substations on the surface lines?

Snow on the line
 

Basil Jet wrote:
On 2017\12\12 20:59, Recliner wrote:
Mike Bristow wrote:
In article ,
Recliner wrote:
Epping and Amersham were both affected, and are about 30 miles apart
as the crow flies, and 44 miles apart by track kilometerage.

I mentioned Uxbridge, not Epping.

... in the context of "power supply problems" - which may or may not have
been caused by iced-up conductor rails. Which were reported all over the
network:

https://twitter.com/centralline/stat...41391773061120
https://twitter.com/metline/status/939783801387061248
https://twitter.com/northernline/sta...67343521550336
https://twitter.com/jubileeline/stat...91679812505601

I can't think of an explaination for the widespread disruption that
/isn't/ ice-on-the-conductor rails - something like the national
grid being unable to supply sufficent current to LUL due to their
issues would have affected the victoria, circle and bakerloo too:
and they didn't report power supply problems.

What's a plausible alternative?


Problems with substations?


Aren't the substations on the deep lines just as exposed to the weather
as the substations on the surface lines?

Some may be, I think others are in shafts. But not all open lines were
affected, either. For example, the District line was fine. The closure of
the whole Met and Uxbridge branch of the Picc probably was a power supply
problem; the later problem on just the Amersham branch was more likely to
have been icing on the rails.

Snow on the line
 

On Tue, 12 Dec 2017 22:52:34 -0000 (UTC)
Recliner wrote:
Basil Jet wrote:
Aren't the substations on the deep lines just as exposed to the weather
as the substations on the surface lines?

Some may be, I think others are in shafts. But not all open lines were
affected, either. For example, the District line was fine. The closure of
the whole Met and Uxbridge branch of the Picc probably was a power supply
problem; the later problem on just the Amersham branch was more likely to
have been icing on the rails.

Sure, a major power supply problem that hasn't happened since god knows when
and purely coincidentaly happens on the first major snowfall in london in 4
years. Riiiight.

Snow on the line
 

wrote:
On Tue, 12 Dec 2017 22:52:34 -0000 (UTC)
Recliner wrote:
Basil Jet wrote:
Aren't the substations on the deep lines just as exposed to the weather
as the substations on the surface lines?

Some may be, I think others are in shafts. But not all open lines were
affected, either. For example, the District line was fine. The closure of
the whole Met and Uxbridge branch of the Picc probably was a power supply
problem; the later problem on just the Amersham branch was more likely to
have been icing on the rails.

Sure, a major power supply problem that hasn't happened since god knows when
and purely coincidentaly happens on the first major snowfall in london in 4
years. Riiiight.

Nobody said it was coincidentally. I assumed the weather caused it.

Snow on the line
 

On Wed, 13 Dec 2017 10:43:21 -0000 (UTC)
Recliner wrote:
wrote:
On Tue, 12 Dec 2017 22:52:34 -0000 (UTC)
Recliner wrote:
Basil Jet wrote:
Aren't the substations on the deep lines just as exposed to the weather
as the substations on the surface lines?

Some may be, I think others are in shafts. But not all open lines were
affected, either. For example, the District line was fine. The closure of
the whole Met and Uxbridge branch of the Picc probably was a power supply
problem; the later problem on just the Amersham branch was more likely to
have been icing on the rails.

Sure, a major power supply problem that hasn't happened since god knows when
and purely coincidentaly happens on the first major snowfall in london in 4
years. Riiiight.

Nobody said it was coincidentally. I assumed the weather caused it.

Well all the other substations around london seemed to cope. Just LUs. Guess
they're just really really unlucky.

Snow on the line
 

In article ,
Recliner wrote:
What's a plausible alternative?

Problems with substations?

What's the mechanisim that caused it? I'm by no means an expert, but
I can't think of obvious problems with substations that would cause
widespread issues when they're snowed on. Localised issues, yes;
but nothing systemic.

--
Mike Bristow

Snow on the line
 

In message , at 14:06:16 on Wed,
13 Dec 2017, Mike Bristow remarked:
What's a plausible alternative?

Problems with substations?

What's the mechanisim that caused it? I'm by no means an expert, but
I can't think of obvious problems with substations that would cause
widespread issues when they're snowed on. Localised issues, yes;
but nothing systemic.

Today there's been a power failure in the Finsbury Park area, causing
a few delays and cancellations.
--
Roland Perry