Details: item description/ heading non-destructive testing (not) of vital components(i.e. brake assemblybrake post connection pin, adjusting nuts, brake tierods, brake path ,main winder shaft, piston head, crank shaft, piston shaft, all attachments of cage suspension gears like chains, 0-shackle, distribution plate, safety hook, friction wedge type rope cappel etc. ) of winders of pit no-2 & pit no-3 of j.k pit of siduli colliery.note:method to be used for ndt.(i) ultrasonic thickness test as per astm e797 is 3664:1981.(ii) hardness testing (rebound method) as per is 4258 -1992.(iii) dye penetrant test(iv) magnetic particle test(v) ultrasonic flow detection testing as per is3664:1981 and is 3685:1999. structural stability audit of head gear structures (foundation concrete, foundation all lsmb channels, angles, bearing pins, rivets, joints etc. ) of winders of pit no-2 & pit no-3 of j.k pit ofsiduli colliery. note: testing methods to be used (i) rebound hammer test (concrete) as per bs6089:1981