tender for maintenance works in esp at lsfm.; 1 maintenance works in esp at lsfm (the rate quoted is exclusive of gst) 2 esp field alignment (per field) 3 replacement of collecting rapping hammer 4 replacement of emitting rapping hammer 5 welding of esp hopper plates and side casing 6 alignment of rapping system for collecting electrode / emitting electrode in esp 7 replacement of inner arm 8 bearing changing work in collecting/emitting rod shaf 9 cleaning of esp fields 10 esp - heating and straightening of collecting electrode at position 11 esp - collecting / emitting / gd screen rapping shaft replacement and alignment 12 esp - shock bar replacement (of collecting/emitting electrodes)