Section 86 in The Delhi Metro Airport Express Line, General Rules, 2010
86. Procedure for preventing admission of electric rolling stock into or over sections of track with dead or earthed overhead lines.
(1)In order to prevent electric rolling stock from being admitted into a track or a crossover for which overhead equipment is made dead or for which a permit to work is to be issued, suitable measures shall be enforced to block setting of such routes.(2)The levers or slide or push buttons of signals and points governing movement of electric rolling stock shall be suitably protected and if the points and signals are locally operated they shall be clamped and padlocked in their normal position and the keys shall be kept with the station controller or depot controller as the case may be.(3)These protective measures shall not be withdrawn until the Station Controller or the Depot Controller, as the case may be, receives a message from the Traffic Controller and acknowledges the same, and the Traffic Controller shall not issue a message unless he has received a message from the Traction Power Controller canceling the power block.
