: Ensuring fitness for purpose of the signalling system Produce a report (300 wo

Question

: Ensuring fitness for purpose of the signalling system

Produce a report (300 words min) that explains how the sequential stages of installation, testing and commissioning of a new signalling system ensure it is fit for purpose. Your report should focus on the individual stages and the competence and equipment required and how the results of activities are recorded to be passed on to the next stage.

Produce a report (300 words min) that describes the need for maintenance, maintenance cycles and consequences of failure if maintenance is not carried out correctly.

Explanation / Answer

The following section highlights the key elements of the signalling system.-:

Train detection : The function of a train detection sub system is to determine if a particular section of track is occupied by a train.

Point operating mechanisms-:

Stages of signal installation

Safety system:

A train driver failing to respond to a signal's indication can be disastrous. As a result, various auxiliary safety systems have been devised. Any such system requires installation of some degree of trainborne equipment. Some systems only intervene in the event of a signal being passed at danger (SPAD). Others include audible and/or visual indications inside the driver's cab to supplement the lineside signals. Automatic brake application occurs if the driver should fail to acknowledge a warning. Some systems act intermittently (at each signal), but the most sophisticated systems provide continuous supervision.

testing of signals is generally done on:

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