At Canning Town, I descended by stairs from the Bus Station to the
Jubilee Line ticket office platform. I noticed the escalator was being
replaced. I was confused by a notice saying escalator replacement takes
6 weeks and the replacement would end in July 2008. A CSA explained July
2008 was the date for the escalator system replacement program to end.
Does anybody here know the story? ISTR that line was opened in 2000 for
the Millennium. What is the design life of an LU escalator.
--
Walter Briscoe

In message of Fri, 31 Aug 2007
09:28:12 in uk.transport.london, Walter Briscoe
writes

05h1t! I omitted "escalator" from the subject.

At Canning Town, I descended by stairs from the Bus Station to the
Jubilee Line ticket office platform. I noticed the escalator was being
replaced. I was confused by a notice saying escalator replacement takes
6 weeks and the replacement would end in July 2008. A CSA explained
July 2008 was the date for the escalator system replacement program to
end. Does anybody here know the story? ISTR that line was opened in
2000 for the Millennium. What is the design life of an LU escalator.

--
Walter Briscoe

On 31 Aug, 09:28, Walter Briscoe wrote:
At Canning Town, I descended by stairs from the Bus Station to the
Jubilee Line ticket office platform. I noticed the escalator was being
replaced. I was confused by a notice saying escalator replacement takes
6 weeks and the replacement would end in July 2008. A CSA explained July
2008 was the date for the escalator system replacement program to end.
Does anybody here know the story? ISTR that line was opened in 2000 for
the Millennium. What is the design life of an LU escalator.

Opened in 1999. Are you sure it's 'replaced' rather than
'refurbished'? It wouldn't surprise me especially if the escalators
need 6 weeks of heavy maintenance after nearly 10 years' service, and
6 weeks sounds definitely more like a 'maintenance' than a
'replacement' timescale (iirc it's at least 3 months to install a
wholly new escalator into an existing shaft).

--
John Band
john at johnband dot org
www.johnband.org

On Aug 31, 10:54 am, John B wrote:
On 31 Aug, 09:28, Walter Briscoe wrote:

At Canning Town, I descended by stairs from the Bus Station to the
Jubilee Line ticket office platform. I noticed the escalator was being
replaced. I was confused by a notice saying escalator replacement takes
6 weeks and the replacement would end in July 2008. A CSA explained July
2008 was the date for the escalator system replacement program to end.
Does anybody here know the story? ISTR that line was opened in 2000 for
the Millennium. What is the design life of an LU escalator.

Opened in 1999. Are you sure it's 'replaced' rather than
'refurbished'? It wouldn't surprise me especially if the escalators
need 6 weeks of heavy maintenance after nearly 10 years' service, and
6 weeks sounds definitely more like a 'maintenance' than a
'replacement' timescale (iirc it's at least 3 months to install a
wholly new escalator into an existing shaft).

--
John Band
john at johnband dot orgwww.johnband.org

They replaced the escalators at North Greenwich also. Let's not
mention the replacement signalling system.The JLEx sure must have been
a pile of ****e.

Kevin

On Aug 31, 11:23 am, Kev wrote:
They replaced the escalators at North Greenwich also. Let's not
mention the replacement signalling system.The JLEx sure must have been
a pile of ****e.

Probably like most thing in short-termism Britain - built to a low
cost. No doubt the people responsible have long since moved on and
won't have to explain why in the end it'll cost far more than if
they'd spent a bit more money in the first place.

B2003

On Aug 31, 11:27 am, Boltar wrote:
On Aug 31, 11:23 am, Kev wrote:

They replaced the escalators at North Greenwich also. Let's not
mention the replacement signalling system.The JLEx sure must have been
a pile of ****e.

Probably like most thing in short-termism Britain - built to a low
cost. No doubt the people responsible have long since moved on and
won't have to explain why in the end it'll cost far more than if
they'd spent a bit more money in the first place.

B2003

To get the line open ASAP, they didnt bother with moving block
sections or ATO, instead just having the same signalling systerm, but
as a fixed block with Train Stops.

On Aug 31, 7:34 am, chunky munky
wrote:
To get the line open ASAP, they didnt bother with moving block
sections or ATO, instead just having the same signalling system, but
as a fixed block with Train Stops.

And the system is so sparse that train capacity is restricted to far
below what the stations can easily handle - each station has basically
one home signal (with a VERY high speed overlap) and one starter
signal (with a low/medium speed overlap). As a result, run-in/run-out
capacity on the JLE is severely restricted, as the distance between
block sections is so much higher than one of the older, more
thoroughly signalled lines.

Once the new moving block system comes into its own, the absolute
capacity of the line will increase significantly, as long as dwell
times are kept as low as possible.

On 31 Aug, 11:23, Kev wrote:
Opened in 1999. Are you sure it's 'replaced' rather than
'refurbished'? It wouldn't surprise me especially if the escalators
need 6 weeks of heavy maintenance after nearly 10 years' service, and
6 weeks sounds definitely more like a 'maintenance' than a
'replacement' timescale (iirc it's at least 3 months to install a
wholly new escalator into an existing shaft).

They replaced the escalators at North Greenwich also. Let's not
mention the replacement signalling system.The JLEx sure must have been
a pile of ****e.

Again, no they didn't. *Replacing* escalators is a year-long process -
see this interesting piece on the escalators at Moorgate:
http://www.metronetrail.com/default....=1125646086750

What they're doing here is refurbishing:
http://www.tubelines.com/news/perfor..._Q1_2007-8.pdf

I don't know if you've ever worked in manufacturing industry, but if
you can find a complex electromechanical machine that works non-stop
for eight years and doesn't require a shutdown for refurbishment and
extended maintenance, then I'd be interested to see it...

As far as the signalling goes - this was an emergency stopgap after
the oh-so-clever technology originally planned (but never previously
made operational anywhere, ever) failed to work. The plan was always
to replace it as part of the line upgrade.

--
John Band
john at johnband dot org
www.johnband.org

On Aug 31, 1:15 pm, John B wrote:
On 31 Aug, 11:23, Kev wrote:

Opened in 1999. Are you sure it's 'replaced' rather than
'refurbished'? It wouldn't surprise me especially if the escalators
need 6 weeks of heavy maintenance after nearly 10 years' service, and
6 weeks sounds definitely more like a 'maintenance' than a
'replacement' timescale (iirc it's at least 3 months to install a
wholly new escalator into an existing shaft).

They replaced the escalators at North Greenwich also. Let's not
mention the replacement signalling system.The JLEx sure must have been
a pile of ****e.

Again, no they didn't. *Replacing* escalators is a year-long process -
see this interesting piece on the escalators at Moorgate:http://www.metronetrail.com/default....=1125646086750

What they're doing here is refurbishing:http://www.tubelines.com/news/perfor..._Q1_2007-8.pdf

I don't know if you've ever worked in manufacturing industry, but if
you can find a complex electromechanical machine that works non-stop
for eight years and doesn't require a shutdown for refurbishment and
extended maintenance, then I'd be interested to see it...

As far as the signalling goes - this was an emergency stopgap after
the oh-so-clever technology originally planned (but never previously
made operational anywhere, ever) failed to work. The plan was always
to replace it as part of the line upgrade.

--
John Band
john at johnband dot orgwww.johnband.org

Sorry but I just split my sides laughing.So escalators that have seen
7 years service are being refurbished. Well all I can say is that with
such a short life span you think that they would build a bit more
redundency into the system to cover the once every 7 years major
disruption caused by the refurbishment. Given that most stations have
only one up and one down and that every 7 years both are going to be
out of service for extended periods is a joke.

Now the piece de resistance, "The plan was always to replace it as
part of the line upgrade". They plan to upgrade the line just 7 years
after it was built. What sort of f**king idiots have we got running
the underground. Goodness know how old the signalling on the Northern
Line is, but a damn site older than 7 years. The Jubilee Ext is being
replaced after just 7 years because of a f**kup when it was built.
Loop systems have been around for a damn sight longer than 7 years and
I was under the impression that loop systems are yesterdays technology
even now.
Kevin

On Aug 31, 1:15 pm, John B wrote:
(but never previously made operational anywhere, ever)

I think you will find that the world is littered with operational loop
based systems.

Kevin