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REPAIR PROCEDURE OF FIRE TUBE BOILERS

on July 31, 2022 BOILER

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on July 27, 2021

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REPAIR PROCEDURE OF FIRE TUBE BOILERS

TUBE TO TUBE SHEET LEAKAGE Check visually and mark the area where leakage is observed. Remove the water from boiler Carry Out Dry Penetrant * (D.P) Examination Of Weld and about 25 To 30 mm Inside Circumferences of tube. If visual Examination or D.P Test confirms leakage is through tube, it means tubes is cracked and it must be replaced If the leakage is through weld mark the area from where leakage is observed Remove the defective weld completely Carry out D P test to confirm defect is removed completely Clean the area thoroughly and preheat the area to 100 deg minimum. Weld root pass using # E7018 @ 3.15 mm electrodes only After root pass carry out d.p test to confirm sound root Clean the area and again preheat to 100 Deg C. minimum Complete the welding using E 7018 @ 3.15 mm electrode Ensure cleaning between subsequent passes Carry out the D P test to confirm the weld Conduct the hydro test to confirm no leakage occurs Alternatively E 6013 electrodes can be used if welder is not c

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REPAIR PROCEDURE OF FIRE TUBE BOILERS

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