Section 12 in Orissa Economiser Inspection Administrative Rules, 1952
12. External inspection of economiser.
(a)After the economiser has been cleaned, the inspection shall make a thorough examination so far as it construction permits. The external condition of the tubes should be carefully noted for wasting especially at the feed inlet end and all accessible tubes should be caliphered. The internal surfaces of cast iron tubes should be caliphered. The internal surface of cast iron tubes should be closely observed for graphitic washing as far as it possible and in the event of any failure these should be broken up for security so that the general internal condition of the other tubes may be estimated.(b)Where tubes or other parts are wasted, the strength should recalculate.(c)The scraper geat should be examined to note if any parts are missing, if the length of travel is adequate and if the scrapers are correctly adjusted.(d)All cap bolts are to be inspected also the condition and position of the dampers and baffler.(e)The record of each inspection and calculations will be entered in the memorandum of inspection book.
