Re-advertisement of contract number FOSPHB-RFP-37-25/26: Proposals are hereby invited for the provision of drum alignment survey for a period of three (3) years. Scope: Drum alignment: - Examine the drum thrust and float; - Examine the carry roller position; - Determine the drum angle and compare it with approved drawings; - Calculate the carry roller degree off-set and determine the shim thickness needed; - Adjust the drum alignment and alignment to the pinion; - Report findings and adjustments; - Determine station to station alignment. Riding ring creep: - Determine the creep of each riding ring; - Calculate the total number of shims required to adjust and maintain consistent drum ovality; - Replace shims needed to achieve conditions; - Define and regularly review the welding procedure in repairing surface cracks and in cases where retaining blocks are to be replaced or fixed; - Determine scope for riding ring life examination and processes of grinding active surfaces to remove uneven or deformed projected faces. Pinion and girth gear: - Prepare surface and measure radial run out of girth gear; - Replace girth and Pinion gear if necessary; - Align girth gear and replace machine bolts. Torque bolts to specified value; - Laser Align pinion to girth gear and replace machine bolts. This, however, should not limit the use of any other proven and industry acceptable method of aligning rotary kilns; - Ensure that the root clearance and backlash of the gears are within tolerances when aligned before tightening pinion. All bolts to be torqued to specified value; - Laser align pinion to girth gear and replace damaged or compromised machined bolts. Provision should be made for crack detection to prevent premature failures of these bolts. This should however not limit use of any other proven and industry acceptable methods; - Ensure that the root clearance and backlash of the gears are within tolerances when aligned before tightening pinion; - All bolts to be torqued to specified value; - Align gearbox to pinion. All bolts to be torqued to specified value. Alignment can be done either with clock gauge or laser – method statement to be advised; - Align motor to gearbox including the barring gear. All bolts to be torqued to specified value; - Modify/repair and position and install guards. (ЮАР - Тендер #68388823)