It should be pointed out that this is only a PRELIMINARY report. It is
marked as such on the investigation. There will be further details/changes
as the investigator continues.
I think it a shame the person who posted it did not point that out to the
group.

Mal

wrote in message
oups.com...
09.26 - Marble Arch - Points Failure, passengers stuck on stalled
train. The failure of 3702 points to normalise at Marble Arch eastbound
caused
the Central Line to be suspended between White City and Holborn from
09.26
until 12.18. Initially, three eastbound trains were stalled in section
between Lancaster Gate and Marble Arch. To try to clear the fault, a
train in
Marble Arch platform was worked in and out of the sidings, however when
the
failure persisted, traction current was discharged to allow the Station

Supervisor to secure the points for through running. The London
Ambulance Service
was advised and an ambulance sent to Marble Arch as a precautionary
measure
The first stalled train (No 33), was authorised to work forward under
failure conditions into the platform at Marble Arch. Passengers having
been on
the train between stations for 25 minutes.
At 10.01, train 33 was authorised to move forward, and the Train
Operator reported a loud bang whilst traversing the points, when in the
platform
at Marble Arch. The following train, (No 5) when authorised through,
stopped short of the points reporting that they had been secured in the
wrong
position [just as a suggested can happen in the "Why does LU take so
long to deal with
a signal failure thread] This train and a further two trains were then
queued in the
tunnel and at 10.16 BT Police were advised. Formal Incident Management

(Na100) was declared with DSM Sparrow appointed Silver Control. A
special service
was introduced west of White City and east of Holborn to all
destinations.
With technical staff assessing the damage to the points, two of the
three trains 3 and 42 were authorised to work back to Lancaster Gate,
Approximately 1000 passengers were detrained to the platform by 10.45.
Once the points were re-secured the remaining train was worked forward
into
Marble Arch platform, detraining 500 passengers at 11.08.
Subsequently 20 passengers were reported to have been attended to by
ambulance crews.
One female having fainted aboard a train was advised to go to hospital
but
decided to continue her journey following water refreshment.
The service remained suspended whilst technical staff made temporary
repairs to the points and track circuits. Signalling code was
re-established and services resumed to severe delays at 12.18, with a
temporary speed
restriction in place over the damaged point work. The special service
pattern was withdrawn at 13.25 and timetable recovery commenced, with
only 2 cancellations at the 15.00 snapshot. A good serviced was
restored at
15.40, and a full service offered for the evening peak. Engineer's
train 570
was cancelled in consequence as staff worked on the points (3702)
during
engineering hours.