WORKING OF TRAINS DURING OVERHAULING

SR 3.51-2 WORKING OF TRAINS DURING OVERHAULING 

• When a lever frame, SM’s control frame of inter locked key box or any other interlocking frame is to be overhauled, temporary working instruction for each phase of work shall be prepared jointly by DOM and DSTE for working of traffic during such overhauling. 
• The SM shall be responsible for ensuring that all the facing points over which the train will pass, are correctly set, clamped and pad locked and that all trailing points over which the train will pass are correctly set before taking OFF the signals. The manner in which the SM will ensure this must be clearly laid down. 
• A notification showing the date & time when the overhauling work would be taken in hand, its probable duration and instruction for the SM to issue Caution Order to LP and for Loco Foreman to advise the LP to observe the temporary speed restriction must be issued jointly by the DSTE and DOM.

            I. The LP must receive a caution order at the last stopping station introducing him of the speed restriction of 15 KMPH at the station where locking is being overhauled.

          II. When the work of overhauling cannot be completed by sun set of the day by commencement is likely to extend over a few days temporary caution indicators and speed indicators (15 KMPH) shall be provided.

•  Disconnection memo on form No. T/351 must always be given by the signal inspector to the SM on duty and his signature is obtained before overhauling is started and after the work is completed. 
• The issue of caution orders and the imposition of speed restriction of 15 KMPH should remain in force until the inter-locking has been tested by the authorized officials and normal working is restored. 
• During the interval between disconnection and reconnection, if a train is to be passed or any shunting movement is to be performed, the SM must advise in writing the signal inspector or the person in-charge of the work, stating in which position the points are to be set. The SM or other authorized person on his behalf, with the permission of the signal inspector or person in-charge of the work, shall then arrange to set and clamp the points and secure them with pad lock. The clamp and pad locks should be removed by the SM after the train / shunting movement has been completed and then the signal inspector or the person in-charge of the work can resume work on the gears.

Procedure of working of trains during failure of Electrically operated points of the crossover SR 3.51-1 (b) 

• On receipt of the information from the operating staff about the failure of the point, S & T staff will try to ascertain the nature of fault and put right the failure. 
• If the S & T staff anticipates that the rectification of the failure is likely to take a longer time, they will inform the operating staff in writing on a disconnection memo to initiate the action. 
• On receipt of such information on a disconnection memo, the SM will ensure the correct setting of the affected points to the NORMAL position and will then clamp both the end of the cross-over in NORMAL position and pad lock both ends. The SM will under no circumstances remove the clamp in the NORMAL setting, unless and until he receives a memo from the S & T staffs. 
• S & T staff of not below the rank of Section Engineer, on receipt of such written advise from the SM, will carry out temporary modification to the installation so that point steady NORMAL indication is available on the panel, by making NORMAL detection available and restricting the clearance of signals reading over the said point (including the overlap) to yellow aspect only. 
• After carrying out the temporary modification, the S & T staff shall advise SM in writing that “Temporary Modifications with respect to the Pt. No.______ have been carried out” and clearance of Signal No. ______ & ______ have been restricted to yellow aspect only. 
• On receipt of the advice, the SM will arrange for issue of caution order to trains for observing 15 KMPH on the route of concerned signal and he also advise the same to the SM of adjacent stations.
• The SM shall arrange for posting an operating staff, not below the rank of a Guard near the affected point for the purpose of monitoring the condition of the clamp and points after every movement. The staff deputed to monitor the point should be equipped with telephonic communication with the SM to advise him on phone to restore the concerned signal to ON position and refrain from taking OFF for any subsequent movement till the condition of the points and clamps is set right. 
• If it shall not be possible to take OFF the signal, the calling-on signal shall be taken OFF or T/369 (3b) shall be issued. 
• After the defect is rectified, the section engineer in consultation with the SM will remove the temporary modifications and will give a memo to the SM stating “work with respect to point No./Cross-over No. ______ has been completed and temporary modifications have been removed and point is ready for testing. 
• Before acknowledging the memo, the SM will ensure that none of the route section over the affected point is set and signals controlling the movement over it are at ON position and the tracks are clear. This is for ensuring that no train passes over the affected points during the testing. 
• After receiving the reconnection memo from the S & T staff, the SM shall inform the same to the section controller and shall starts normal movements on the point.