General Overhauling of Hot Water Generators and complete servicing of convectors and Radiators along with allied works at Govt. LD Hospital, Srinagar.

Amount

Opening of the Thermax make 15Lac Kcal/hr Hot Water Generator, thoroughly cleaning inside and outside of the same, both in case of coil and the shell and removing of soot and carbon deposits. The inside of coil shall be cleaned by circulating through it a solution of Max Clean decaling compound of ‘Thermax’ make (approx. 60 kg) and water of required strength, continuously for 24 hours with the help of a pump. The solution is to be circulated from a tank/barrel. Brushes, detergent, diesel/kerosene oil, dhoti cloth required shall be arranged and provided by the contractor. All other accessories of the boiler shall also be opened and cleaned similarly. The job includes replacement of all seals, gaskets, asbestos rope, asbestos felt, asbestos sheet, defective nuts and bolts etc. The tools, tackles required for the job and any other consumable shall be provided by the contractor.

Replacement of refractory of 15Lac Kcal/Hr Hot Water Generator. The job includes complete removal of old damaged refractory and thorough cleaning of refractory surfaces/bases. Angle iron hooks/hold fasts shall be firmly welded to the refractory base wherever necessary and collar of the top plate shall be repaired if required. Refractory shall be laid in ‘Fire Crete Super’ brand castable refractory cement.

Back plate refractory

Opening of the Thermax make 20 Lac Kcal/hr Hot Water Generator, thoroughly cleaning inside and outside of the same, both in case of coil and the shell and removing of soot and carbon deposits. The inside of coil shall be cleaned by circulating through it a solution of Max Clean decaling compound of Thermax make (approx. 60 kg) and water of required strength, continuously for 24 hours with the help of a pump. The solution is to be circulated from a tank /barrel. Brushes, detergent, diesel/kerosene oil, dhoti cloth required shall be arranged and provided by the contractor. All other accessories of the boiler shall also be opened and cleaned similarly. The job includes replacement of all seals, gaskets, asbestos rope, asbestos felt, asbestos sheet, defective nuts and bolts etc. The tools, tackles required for the job and any other consumable shall be provided by the contractor.

Replacement of refractory of 20 Lac Kcal/Hr Hot Water Generator. The job includes complete removal of old damaged refractory and thorough cleaning of refractory surfaces/bases. Angle iron hooks/hold fasts shall be firmly welded to the refractory base wherever necessary and collar of the top plate shall be repaired if required. Refractory shall be laid in ‘Fire Crete Super’ brand castable refractory cement.

Back plate refractory

Dismantling of Nestler make DB090 model Hot Water Generator of capacity 16 lac Kcal/hr, detachment of front doors and back door. The job includes cleaning of tubes, combustion chamber and blower assembly from inside and outside. The cleaning shall be done thoroughly with wire brushes, dhoti cloth etc. After cleaning requisite repairs have to be carried out to the boiler including welding wherever required. The boiler shall be then reassembled and refitted using new fire seals of asbestos rope of size 25mm, 20mm, 12mm and replacement of all defective nuts and bolts. It includes replacement of canvas connection from blower to combustion chamber, blower lock plates and lock plates after tapping and drilling of holes. The job further includes providing of all consumables like wire brushes , tubes, cleaning brushes, dhoti cloth, steam jointing sheets, asbestos rope of two sizes, nuts bolts etc.

Complete descaling of Hot Water Generator DB090 using about 50 kgs of Max clean descaling compound of ‘Thermax’ make mixed with water filled in the boiler. This solution shall be given continuous circulation inside the boiler with the help of a pump as per the manufacturer’s recommendations. The contractor shall made his own arrangement for pump, piping, tank etc. required for descaling. After descaling boiler shall be washed thoroughly with water to remove the traces of acid. The job includes hydraulic pressure testing of boiler for detection of possible leaked boiler tubes etc.

Extraction of leaked boiler tubes and providing, fitting and hydraulic testing of new tubes of about 3.125 mtr long & 50 mm nominal dia. The tubes shall be IBR certified for a test pressure of 7kg/cm² and working pressure of 3.5 kg/cm². The new tubes after placing in the required slots have their ends flared to match the holes and these ends shall be welded into a leak proof point with boiler end plates using welding electrodes suitable for high pressure welding and able to withstand high temperature of the boiler. The tubes after fitting shall be subjected to hydraulic test with pressure of 7 kg/cm² for 24 hrs continuously to check for leakage. All arrangements for welding machine, tools and tackles, electrodes etc. required for the job have to be made by the contractor at his own cost.

Replacement of refractory of Nestler make DB090 model of capacity 16Lac Kcal/Hr Hot Water Generator. The job includes complete removal of old damaged refractory and thorough cleaning of refractory surfaces/bases. Angle iron hooks/hold fasts shall be firmly welded to the refractory base wherever necessary and collar of the top plate shall be repaired if required. Refractory shall be laid in ‘Fire Crete Super’ brand castable refractory cement.

Back plate refractory

Repairs to the refractory of the boiler by way of cleaning the refractory surface, removal of damaged portion of refractory and laying of fresh refractory in 1:1 mix of asbestos powder and refractory cement with mesh for front doors & castle refractory cement (fire crete brand) & bricks required for back door.

Front door

Repairing of feed pump by way of replacement of bearings, providing and fitting of new gland packing, greasing etc of 15lac k cal/hr boiler

Repairing of circulation pump by way of replacement of bearings, providing and fitting of new gland packing,greasing etc besides varnishing of motor (30 HP).

Repairing of blower assembly by way of replacement of bearings and other allied items of 15lac k cal/hr and 20lac k cal/hr boiler.

Repairing of 3 HP oil pump by way of replacement of bearings,runner and other allied items.

Repairing of 3 HP softner pump by way of replacement of bearings,runner and other allied items.

Replacement of auto cut sensor of 15lac k cal/hr and 20lac k cal/hr hot water genrator.

Complete dismantling of heat convectors installed inside various blocks of Govt. LD Hospital, Srinagar. The convectors after opening at flange joints will be shifted to any suitable place inside the hospital premises as identified by concerned engineer in charge. The job includes removing of dirt etc. between aluminium fins either by using blower or manually by using suitable size wire brushes followed by impinging high pressure water. The job also includes straightening of Aluminium fins and fixing of loose fins by brazing. The inside of copper tube shall be cleaned by circulating a solution of sulphuric acid powder of Thermax (Maxclean) make and water of required strength continuously for 1 hour or more with the help pump so that the working pH is achieved (pH between 1 to 2). The solution is to be circulated from a tank/barrel/tray (tobe be circulated by contactor). Brushes, detergent, diesel/kerosine oil, dhoti cloth, litmus paper required shall be arranged and provided by the contractor. The convector shall then be fitted to their respective places with replacement of damaged gaskets, nuts & bolts etc. The job further includes removal of dents if any to the convector sheilds followed by application of coal of paint of even shade on the required portion.

Fabrication, providing and fitting of convector clamps for the convectors, to be fabricated out of suitable size angle/flat iron. These clamps are to be fixed to the wall with the help of 8 × 150 mm dash fasteners. The clamps are to be fabricated so that there was no gap between convector sheild and wall after installation of convectors.

Complete dismantling of heat Radiators installed inside various blocks of Govt. LD Hospital, Srinagar. The radiators after opening will shifted to any suitable place inside the hospital premises as identified by concerned engineer in charge. The job includes removing of dirt etc by using suitable size wire brushes followed by impinging high pressure water. The inside of radiator shall be cleaned by circulating a solution of sulphuric acid powder of Thermax (Maxclean) make and water of required strength continuously for 1 hour or more with the help pump so that the working pH is achieved (pH between 1 to 2). The solution is to be circulated from a tank/barrel/tray (tobe be circulated by contactor). Brushes, detergent, diesel/kerosine oil, dhoti cloth, litmus paper required shall be arranged and provided by the contractor. The radiators shall then be fitted to their respective places with replacement of damaged gaskets, nuts & bolts etc. The job further includes removal of dents if any to the radiators followed by application of coal of paint of even shade on the required portion.

Supply, installation, testing and commissioning of following diameter MS 'C' class piping along with allied fittings in sizes at various places.

Providing and fitting of 20 mm Ball Valve along with allied fittings at various places in places of damaged ones.

Providing and fitting of radiator Valves (inlet, outlet) to the already existing radiators in places of damaged ones.

NEW AHANGER ENGINEERING WORKS

M/S BHAT ENTERPRISES