MTPS 1 Mill Plant Unit IV Attending the Break down Preventive maintenance works such as overhauling of journal assemblies mechanical face seal assembly renewal of vertical shaft thrust bearing etc

Amount

Charges for dismantling of journal door and roller assembly after disconnecting seal airline and assembling the same as before, after attending works inside the mill & setting ring roller clearance.

Labour chargers for checking / setting spring compression after cleaning the spring compression studs and cleaning or renewal of stop bolt assemblies

Charges for dismantling the old roller from the journal assembly, replacing it with new/old roller including transporting charges from Stores to site and devolution of old rollers to Stores as per the direction of site engineer.

Charges for removal of journal head assembly upper housing, journal shaft with bearings, inspection, cleaning, replacing the worn out parts such as metal clad oil seal, ‘O rings etc. and assembling the above & setting of bearing clearances, filling up of oil, including lead, lift, and devolution of scraps to stores.

Charges for hard facing the Airport ring assembly Segments (6 Nos.) and bowl extension rings (6 Nos.) etc. in one mill.

Charges for cutting and removing the existing worn out airport ring assembly and erecting new airport assembly.

Draining of Mill gearbox oil completely, cleaning the gearbox internals like worm shafts and worms wheel. After inspection filling the gearbox with new/old oil including devolution of old oil to stores etc, (Department vehicle will be provided for drawl of oil at free of cost)

Charges for providing wedges between lower skirt and Mill insulation cover plate firmly, removal of gearbox bottom cover flange bolts, lowering the thrust bearing and pump housing after supporting lower radial bearing housing. Lowering the thrust bearings and reassembling of all the above parts, providing SS shims at the bottom cover flange. Blue matching the worm shaft and worm wheel engagement till we get 20 to 50% pattern by trial method releasing/ providing thin SS shim sheet at the bottom cover flange and to get proper running clearance and centring of engagement.

Charges for Dismantling of upper skirt assembly, lower skirt assembly, Mechanical face seal assembly, dust guard and blue matching of seal runner, renewal of seal( bronze), air seal, dismantling of Mill bottom cover, upper bearing housing cover, oil seals etc., Complete overhauling, assembling back the lower skirt assembly, scrapper assembly and arresting the oil leakages in the return line and also spillage’s at the rear side of gearbox to prevent Mill fire including cleaning and tapping the threaded holes.

Dismantling the worn out journal bearings, and re fixing the new bearings.

Renewal of damaged feeder belt / pulley bearings / half coupling pins Charges for closing the feeder inlet bunker gate valve manually, clearing the coal from down spout pipe assembly dismantling of feeder internals such as pulleys / rollers etc., and replacement of damaged / peeled off feeder belt / pulley bearing / half coupling and its pins and other internals with spare / new one and assembling the same in proper manner and trail run etc

Cost of MS Welding electrodes

Cutting gas

8mm thick rubber cord

Cost of hard facing Welding electrodes

Charges for consumables and T & Ps

BHARATH ENGINEERING WORKS