Capital Repairs of a Blast Furnace Sep01

Capital Repairs of a Blast Furnace...

Capital Repairs of a Blast Furnace Capital repairs of a blast furnace are those repairs which are taken up after the end of a campaign of the blast furnace. During the capital repairs the main jobs which are normally taken up are (i) relining of the furnace, (iii) repairs of the damaged portion of the shell, (iii) Major revisioning of all the equipment with replacement of the worn out components, (iv) replacement of those equipments, instruments and automation items which have become obsolete or completed their useful life, and (v) modification work the need of which was felt during the running of the blast furnace in the campaign which has just ended. Since the campaign of a blast furnace lasts for a long time (10 years to 20 years), technology upgradation takes place during this period. Hence it becomes necessary to incorporate these technological upgradation features in the blast furnace during the capital repairs. This keeps the blast furnace up to date in its new campaign. Capital repairs also provide opportunity to steel plant to improve the lining features of the furnace and to enhance the internal volume and hence the capacity of the blast furnace. The improvement in the lining features also help in the enhancement in the campaign life of the blast furnace. Planning for the capital repairs Capital repairs of the blast furnace are normally a time bound activity which is to be completed within the shortest possible time and in the assigned budget and hence accurate and close planning is very important for the successful completion of the capital repairs. Planning is required to be done to the minute levels. The achievement of the success in timely completion of the capital repairs within the estimated costs depends on how accurate...