Failure of Signalling Equip.pptx

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Failure of Signalling Equipment

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5.1 Immediate actions When signalling equipment fails, you must: • make the operational railway safe • tell any other signallers affected • tell Operations Control • make sure trains pass safely • enter the details in the Train Register

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5.2 Indications failure If there has been an apparent failure of a signal or set of points, you must confirm whether all of the following apply. • When cleared, the protecting signal shows the correct aspect (and where appropriate, the indication of route). • In the case of an automatic signal, the signal section ahead, including the overlap of the next stop signal is clear, and the correct signal aspect is displayed. • After a train has passed, the signal returns to danger. • The signal that protects the points can be cleared. • It is possible to issue an MA. • There is no indication that an electronic link has failed. If there is more than one route, you must apply this instruction to each route. If you can confirm that all of the above apply, then the signal or set of points is working correctly, and you can treat the failure of the signal or points as being a failure of indications only. You can allow trains to run normally. You can also allow trains to run normally if a signalling technician has confirmed that the failure concerns indications only.

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If a track circuit fails to clear after the passage of a train or shows occupied for some other reason but the signal is able to show a proceed aspect or indication or it is possible to issue an MA on an ERTMS line, you must make sure that all of the following apply. • The last train has passed through the section. • The next train has been stopped and you have instructed the driver to proceed at caution when the signal is cleared or after an MA has been received and to report the correct signal aspect is shown at each signal concerned. • The driver has confirmed that each signal has shown the correct aspect (including any indication of route). • After a train has passed, the signal returns to danger. • There is no indication that an electronic link has failed. If there is more than one route, you must apply this instruction to each route. This will confirm that the track circuit is working normally and you can treat the failure of the track circuit as being an indications failure only. You can allow trains to run normally. You can also allow trains to run normally if a signalling technician has confirmed that the failure concerns indications only.

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5.3 Before starting work You must come to a clear understanding with the signalling technician about: • what equipment has failed • what other equipment will be affected by the work to repair the failure • whether any equipment needs to be disconnected, restricted or taken out of use • whether form RT3187 has to be used. You must agree with the signalling technician the time that work can start. You must enter in the Train Register all details agreed with the signalling technician. If you are another signaller involved, you must make an entry in the Train Register.

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.4 If the work requires signalling equipment to be disconnected, restricted or taken out of use Before work is allowed to start that requires signalling equipment to be disconnected, restricted or taken out of use, you must: • place or maintain the equipment in the agreed position • if no train will pass before the work is completed, make an entry in the Train Register • if trains will pass before the work is completed, enter the details in part 2 of your copy of form RT3187 at the same time as the signalling technician • tell any other signaller who is affected by the work • when it is safe to do so, give the signalling technician permission to start the work. If you are another signaller involved, you must make an entry in the Train Register. Once you have given the signalling technician permission to disconnect or restrict the agreed signalling equipment, you must not allow trains to pass until the signalling technician tells you the disconnections or restrictions have been made.

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5.5 During the work No alteration to the work must be made unless the signalling technician has first agreed the changes with you. You must enter in the Train Register the details of any agreed alterations. Failure of, or work on, signalling equipment - signallers’ regulations regulation 24 09/24 Uncontrolled when printed Supersedes GERT8000-TS11 Iss 6 with effect from 07/12/2024 If form RT3187 has been used, you must cancel it and enter the details of the agreed alterations on part 2 of a new form RT3187 at the same time as the signalling technician.

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5.6 When the work is completed When the signalling technician tells you the work is completed and the equipment is in working order, you must: • make an entry in the Train Register, or if form RT3187 has been used, fill in part 4 of your copy at the same time as the signalling technician • tell any other signaller involved • tell Operations Control.

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5.7 If all the work cannot be completed If the signalling technician tells you that all the work cannot be completed, you must find out the details of: • work that has been completed • equipment that is in working order • work that has not been completed • any equipment that will stay disconnected or restricted • any equipment that will be taken out of use • what arrangements will be made to complete the work, if known. You must: • use form RT3187, giving details of all equipment that will stay disconnected, restricted or will be taken out of use • make a suitable entry in the Train Register • tell Operations Control and give details of the equipment still affected by the failure.

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5.8 Failure of an electronic link During the failure of an electronic link between the signal box and an interlocking, you must not rely on the indications in the signal box for the equipment in the interlocking area concerned. This does not apply if the signalling technician confirms that the failure only exists in the fault indication circuit and the operating indications can be relied on.

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assing two main aspect stop signals at danger The people responsible: driver, signaller 7.1 Before allowing a train to pass two signals at danger If signalling equipment on a TCB line other than a single line fails or is disconnected, and you need to authorise the driver to pass two or more consecutive main aspect stop signals at danger under the same authority, you can normally only do so after you have been authorised to introduce emergency special working or temporary block working. However, you can authorise the driver of a train stopped at a main aspect stop signal to pass that signal and the next main aspect stop signal at danger if all of the following apply. • It has been confirmed that because of the same fault. neither signal can display a proceed aspect, or the first signal is held at danger and the second signal is not displaying any aspect. • There is no main aspect distant signal between the two main aspect stop signals. • The second main aspect stop signal is not fitted with TPWS. • The line has been examined and is known to be clear up to and including the overlap of the next main aspect stop signal beyond the second main aspect stop signal involved. • The next signal beyond the second main aspect stop signal is displaying a proceed aspect. signaller Passing a signal at danger or an end of authority (EoA) without a movement authority (MA) 7 section 30 09/24 Uncontrolled when printed Supersedes GERT8000-S5 Iss 11 with effect from 07/12/2024 7.2 Authorising a train to pass two signals at danger You must tell the driver. • what is happening • that it is necessary to pass two consecutive main aspect stop signals at danger, or the first at danger and the second not displaying any aspect • the identity of the two signals involved • to obey the aspect of all subsequent signals • to travel at a maximum speed of no more than 50 mph (80 km/h) until after sighting the first signal that must be obeyed, and then proceed as indicated by the aspect of that signal • to proceed at caution at any location where it is necessary to do so. When the driver has repeated back the instructions to show that they are understood, you may authorise the driver to pass the two signals at danger. You must record in the Train Register: • the line affected • the train reporting number • the time you give permission to pass the two signals at danger • the time the train has passed clear of the signal beyond the two affected signals. 7.3 At the first signal If the signaller tells you that because of the same fault. two consecutive main aspect stop signals cannot display a proceed aspect, or the first signal is held at danger and the second signal is not displaying any aspect, you must repeat back all the instructions given to you to show that you have understood them. signaller driver section 09/24 31 Uncontrolled when printed Supersedes GERT8000-S5 Iss 11 with effect from 07/12/2024 The signaller will then authorise you to pass the two main aspect stop signals at danger. 7.4 During the movement You must: • pass each of the two main aspect stop signals at danger • ignore the aspects of any ground position-light signals, unless the signaller has told you otherwise • obey the aspects of all subsequent signals • travel at a speed not exceeding 50 mph (80 km/h), other than locations where you are told to proceed at caution, until you can see the aspect of the next main aspect stop signal beyond the second signal you were authorised to pass • then proceed at a speed appropriate for the aspect displayed by that next signal.

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