Potters Bar

8/11/2019 Potters Bar

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Potters Bar

Disaster 2002


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Aim

To provide you with a 10 minute presentation on the Potter bar disaster

as well as the facts and figures relating to it.

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Objectives

Introduction

Background

The lead up to the crash

The incident

The cause

The damage caused

Aftermath

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Introduction

During this presentation we will be looking at the 2002 Potters bar

disaster and in particular the set of points(Points 2182A) that caused

the disaster.

We will also be looking at the aftermath of the disaster as well as what

has changed as a result of the crash and the events leading up to thecrash.

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Background

On May 10th2002, the rear coach of a four coach passenger train

traveling from Kings cross to Kings Lynn derailed killing 7 people and

injuring 71 leaving 11 in a critical condition and 60 walking wounded.

As shown in the picture below the train did not come to a stop until it

lodged itself

underneath the roof of the

platform.

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Background cont

Out of the people that died, 6 of them, Austen Kark. Emma Knights,

Jonael Schickler, Alexander Ogunwusi, Chia Hsin Lin and Chia Chin

Wu were on the train and 1 person, an 80 year old woman named

Agnes Quinlivan was killed by falling debris.

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The lead up to the crash.

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Prior Concerns:

Passenger had complained of a violent lurching of the trains as they

pass over the set of points responsible for the incident.

Reported by passengers and station announcer on various occasions.

There was a full inspection of the points on the 1st May 2002.

A maintenance team were dispatched on the 9thMay 2002.


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The incident.

At 12:45 the West Anglia Great Northern train left

Kings Cross station bound for Kings Lynn station in

Norfolk.

At 12:55 travelling at approximately 97mph the train

crossed the points and the fourth carriage derailed.

The derailment caused the carriage to hit the under

bridge and roll up to, and getting wedged between the

platform and the roof of the station.

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The Cause

A fault with set of points 2182A caused the last carriage to derail.

Two nuts were missing at this set of points putting excessive strain on

the lock stretcher bars.

This caused fractures allowing the points to switch as the vibration fromthe train passed over the points.

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The damage caused.

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The physical damage caused was the damage to the rail and points

as well as the bridge, carriage and the station.

There was the cost of human life.

The corporate damage was extensive and damning.


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Aftermath

7 people dead in total

71 injured


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Aftermath

Investigations by the British transport police and HSE

Victims of the incident called for a public inquiry but were never givenone

20% of points in the area found to have loose bolts

HSE told railtrack to review the design of them

Jarvis and railtrack found to be at blame

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Aftermath

Jarvis fined 12 million, plus the loss of contracts

Network rail fined 3 million in 2011

Physical costs not stated

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Aftermath

Bolts in adjustment bars notbeing fitted found to be the cause

This was because Jarvis had apoor maintenance routine

Also partly railtracks fault forgiving wrong instruction

Could have been avoided by

regular visual inspection byJarvis and correct informationgiven by railtrack


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Aftermath

Railtrack took most of the maintenance in house

A review of the design of the points was carried out

Standard of the points improved

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Potters Bar

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Transcript of Potters Bar