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Proceedings 2002/2003 - IRSE

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132 SOUTHERN AFRICAN SECTION<br />

at Spoornet) enlightened the guests as to the current<br />

role of women in rail in South Africa and related this<br />

to a highly successful locomotive preparation<br />

project. A female colleague of Shulami managed the<br />

project. Shulami also had a significant involvement<br />

in the project. The award for the best paper in the<br />

2001 session was announced at the dinner, with the<br />

winner being Ernst Swanepoel of the SARCC for his<br />

paper entitled “Management of Rail Assets – Art or<br />

Science”.<br />

A strategic session was held during the year to<br />

review the role and focus of the Southern African<br />

Section and to decide on the positioning of the<br />

Section with regard to the proposed formation of a<br />

Rail Safety Regulator in South Africa. The conclusion<br />

of the session was that the Southern African Section<br />

is doing most of the things it should and that it<br />

should continue to:<br />

• Ensure a presence in the environment<br />

• Define a training strategy<br />

• Actively market the services it can provide to<br />

possible members.<br />

The Southern African Section still labours under a<br />

decrease in the number of members arising from a<br />

number of retired members suspending their<br />

membership during this session and the ongoing<br />

overseas recruitment that continues to attract<br />

signalling expertise from Southern Africa.<br />

Vic Bowles<br />

General Secretary<br />

Western Section<br />

COMPOSITION OF THE COMMITTEE<br />

Chairman<br />

Vice-Chairman<br />

Hon Secretary<br />

Hon Treasurer<br />

Members<br />

Mark Glover<br />

Peter Duggan<br />

Doug Gillanders<br />

Mark Brookes<br />

Chris Napper, Ed Gerrard<br />

Peter Martell<br />

TECHNICAL MEETINGS<br />

It was disappointing start to the session when it<br />

was necessary to rearrange at relatively short notice<br />

the first paper of the session because the original<br />

planned event had no response whatsoever. The<br />

original event was to have been a short papers<br />

evening where the prize for the best was to have<br />

been a Section-sponsored place on the <strong>IRSE</strong><br />

Convention in Birmingham. No papers at all were<br />

submitted.<br />

We again had a varied range of papers which, by<br />

the attendance figures, suggests that the choice is<br />

generally of the correct interest level but could be<br />

improved.<br />

As no April/May visit could be arranged, as we<br />

were either declined or received no response, the<br />

AGM is to be convened before the first paper of the<br />

next session.<br />

The first paper of the session which took place in<br />

Amey Rail’s offices in Bristol, was presented by<br />

Simon Chadwick of Westinghouse Rail Systems and<br />

was entitled “Westlock – The Next Generation<br />

Interlocking”. Simon introduced his topic by giving<br />

an overview of what he was going to present and<br />

stressed the recurring theme would be evolution not<br />

revolution with a system based on the tried and<br />

trusted SSI.<br />

SSI is very good but had reached its limits. More<br />

was required of SSI and there were issues of<br />

obsolescence. The object was to recreate-use the<br />

concepts and the technology and make use of the<br />

extensive experience of staff within the rail industry.<br />

The plan is to build on the data structures and recreate-use<br />

the TFMs and datalink modules where<br />

appropriate. The new interlocking will connect to an<br />

existing SSI one, but as it is around four times the<br />

size of an SSI, the designer can determine the optimum<br />

position of the boundary.<br />

He then moved on to explain the system architecture.<br />

There were three safety critical bits – the CIP<br />

(Control Interlocking Processor), the TIF (Trackside<br />

Interface) and the SII (SSI Interface). In future instead<br />

of the TIFs together with the TFMs, the method of<br />

control may change to OBs (Object controllers). The<br />

OB may also replace the Radio Block Control<br />

systems. Currently SSI uses LDTs (Long Distance<br />

Terminals) where in future these would be replaced<br />

and have remote TIFs. The Westlock interlocking<br />

can be so configured to either have local TIFs,<br />

replacing the MPMs of SSI, feeding out to LDTs<br />

changing only the “centre” or it can be configured to<br />

have remote TIFs doing away with LDTs and<br />

changing the lineside configurations.<br />

The data preparation and testing tools are being<br />

designed to make it easier to do both activities. The<br />

data structure is similar to SSIs but will be able to be<br />

compiled in a PC environment rather than a<br />

workstation. The process from design to commission<br />

remains identical as is now used. Data is<br />

generated for the new interlocking using the PC<br />

environment or it is converted from SSI data to<br />

Westlock data for an existing interlocking. The interlocking<br />

can then be fully tested off-line using either<br />

actual equipment or a fully simulated set up. This will<br />

have the effect that stageworks will be tested more<br />

efficiently. However, at some point, when the actual<br />

control and indications have to be tested, more of<br />

the working railway will have to be turned off!<br />

The way forward now is pick a trial site for some<br />

parallel running. The most suitable in terms of SSI<br />

interfaces is the Euston/Willesden project but the<br />

scheme is too big for one Westlock interlocking.<br />

Consequently, a section of the Willesden area has<br />

been chosen where the Westlock can be connected<br />

to all the different possible interfaces. The section<br />

chosen will use 199 TFMs, 126 signals, 140 points,<br />

254 track circuits and have 431 routes.

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