DEFECTIVE POINTS

 

DEFECTIVE POINTS – SR 3.77-1 

On receipt of information that points are defective or cannot for any reason be fully operated, the SM must normalize the signals and points concerned and attempt to re-operate them. If the defective is still persist, and S & T staffs responsible for the maintenance of the S & T gears are available , they must be promptly advised. Where, however such S & T staffs are not available, he must personally inspect the points to find out the cause and remedy the defect, if he can. If he cannot, he must promptly advise “all concerned”.

 POINT DAMAGED – SR 3.77-2 

The SM examines the damaged points immediately and take steps to prevent any movement over the damaged point until the defect has been rectified. 

BURSTING OF POINTS (POINTS DRIVER TRAILINNG THROUGH) – SR 3.77-3

 If on any account a point is trailed through, the LP must not under any circumstances back his train over the point trailed through before the defect to the point has either been rectified or the point been probably set and clamped for any further movement, provided that after clamping, the point does not gape.

CRANK HANDLE 

Crank Handle is a small iron handle with a rotatable handle at one end and projection at the other. The end with the projection can be inserted in a socket in the point’s machine and with clockwise or anti-clockwise rotations of the handle, the points can be operated. Crank Handles are provided at each station at which points are fitted with Electric Point Machines. When points cannot be operated from the panel they can be operated manually with the help of a crank handle. Normally, the Crank Handle shall be kept electrically locked and should be released for every operation requiring the same. Once the Crank handle is released, the relevant signal cannot be taken off until the Crank handle is restored. 

A master crank Handle may be provided which is kept in a sealed steel/glass fronted case. It is used whenever electric transmission of the Crank Handle fails. One or more Crank Handles may be provided at a station. A register is to be maintained for Crank Handle operations. The SM on duty himself should operate crank Handle. For testing, repairing, renewing etc. maintenance staff has to take over the Crank Handle from SM after obtaining his signature in the notice. Taking and making over of Crank Handle should be recorded in the register maintained for the purpose at station.