NCTPS I SE MI circle AMC 24 25 TM Dn Attending preventive maintenance and break down works etc in air compressors

Amount

Renewal of belt:- Renewal of worn out plumber block / belts Eight Nos. removal of guard, removal of pedestal cover, Plummer block, renewal of belts, Servicing or changing of journal bearing, re fixing the plumber block and alignment, commissioning. Including consumables and tools & plants.

Rectification of punctured tube in inter / after coolers:- Removal of inter cooler / after cooler, cleaning of tubes with water and brush and re-fitting of inter / after cooler, inspection, hydraulic test, plugging of punctured tubes. Including consumables and T&P’s.

Servicing of HP / LP suction and delivery valve assembly:- dismantling , cleaning, inspection and replacement of worn out plates if necessary and re-fixing of HP / LP cylinder suction and delivery valves - 16 Nos. (01 set of 16 Nos. valves)

Changing /checking HP / LP cylinder of air compressor:- (This work involve dismantling of cooling water line, removing all valves assembly, end cover and piston, renewal of piston rings and guide rings if necessary. Re-fixing of piston assembly and alignment, re-fixing of end cover, water lines and valve assembly and commissioning. Including consumables and T&P’s.

Renewal of 'O' ring gasket in CW jacket of the compressors:- Dismantling of cooling water jacket, cylinder head lines, inspection of 'O' ring gasket and re-fixing. Including consumables and T&P’s.

Dismantling of Air filter, oil filter, and strainer, cleaning, re-fixing and greasing the pedestal bearing. (each compressor has 4 cylinders) Including consumables and T&P’s.

Servicing of LP / HP delivery pulsation vessel:- Dismantling and cleaning of internal portion, & re-fixing. Including consumables and T&P’s.

Reactivation of saturated activated alumina in air dryer units:- Opening of manhole door on Instrument air dryer tower / Service air dryer tower (One No.) removing of entire existing saturated, activated alumina balls, cleaning of inside the air dryer tower One No. with water & air, drying and filling the existing / New Activated alumina balls, closing the manhole door, and commissioning. Including consumables and tools & plants.

Servicing of solenoid valves & Non return flaps of air dryer units:- Dismantling, checking, servicing & re-fixing of solenoid valves. Dismantling, checking, re-fixing / changing of NB 40 & NB 80 Non return flaps on Instrument air dryer / Service air dryer, and commissioning. Including consumables and T&P’s.

Attending breakdown welding works in air lined ACW lines in compressor area by M.S. welding including cutting the plates, grinding, forming to required shape, preparing the welding surface, and welding, with lead time. (01 Patch is 150 mm x 150 mm x 8 -10 mm thick.) Including consumables and T&P’s.

M.ANBAZHAGAN