When life line is used they shall be fastened to fixed safe points of anchorage capable of supporting 2300 Kgs. shall be independent, and shall be protected from sharp edges and abrasion. Safe anchorage points may include structural members (minimum 4’’structural member or 4’’ pipes) but do not include guard rails, vents, other small dia piping systems, electrical conduit, outrigger beams or counter weights. It shall be maid from 10mm dia wire ropes. Horizontal lifelines shall be installed at the highest feasible point, preferably above shoulder height. This life lines shall be maintained with unloaded sag at the centre no greater than 30cm (12 Inch) for every 10 meters of lifeline length between attachments points.