Emergency power cables for escape operation with slow speed linking the terminating box & change over switch shall be provided. The change over switch shall be used for switching between the supply from the cable reel trailing cable and the emergency cable in the event of damage to the trailing cable. Indication lamps to show that the emergency power cable is energized shall be provided on the cover of the explosion proof terminating box. There shall be locks to secure the change over switch and the terminating box. The cable reel system shall be designed such that, when the crane is parked and subjected to gust of wind, the cable reel shall be able to pay out appropriate length of cable automatically in accordance to the amount of crane movement caused by the gust. The design shall ensure that under such circumstances, the cable shall not sustain any damage. Raychem/Fujikura/Hitachi under water submerged type heat sinkable termination kit shall be used for power cable termination. The gantry travel drive system shall be connected with the cable reel system such that the gantry travel shall slow down before the crane reaching the turnover pit and the crane shall resume the normal gantry travel speed after crossing the pit. Details of the cable reel system and proposals on how the above requirements can be met shall be submitted with the tender documents technical bid. The following brand of the cable reel drum shall be used: STEMMANN, VAHLE, DELACHAVX, WAMPFLER, CAVOTEL, NICHIDEN or eqv. The trailing cable shall be of the following brand: SIEMENS, ALCATEL, ABB, GE, FUJIJURA, HITACHI, PIRELLI or eqv.