O and M of Gumma Power House

Centrifugal re-babbiting of thrust cum Gudie bearing with white meatal Confirming to IS25 Grade 84 consists of following specification of works:- a) To clean bearing housing b) To record dimension and to note detail of oil packets and galleries. c) To remove oil fatigued and damaged metal layer under controlled temperature to avoid distortion of base metal . d) To carry out proper cleaning of base metal follower by DPT to ensure defect free surface. e) Tinning of base metal with required flux and graded tin. f) To reline with IS25 grade -84white metal for required thickness 10 to 12 mm. g) To carry out to machining of lining. h) UT Test to be carry out to ensure proper bonding. i) Thickness of white metal should not be less than 3.5 mm j) Final matching and finishing to maintain size ID 160 mm k) Certificate regarding material chemistry and ultrasonic test to provide by the contractor

Centrifugal Re-babbiting of 20 nos thrust pads of thrust cum Guide bearing of 2x1.50 MW Gumma Power House .The Job will consist of following works as detailed below: (1) removal of old damaged babbit material from the shella) To clean bearing housing b) To record dimension and to note detail of oil packets and galleries. c) To remove oil fatigued and damaged metal layer under controlled temperature to avoid distortion of base metal . d) To carry out proper cleaning of base metal follower by DPT to ensure defect free surface. e) Tinning of base metal with required flux and graded tin. f) To reline with IS25 grade -84white metal for required thickness 3 to 5 mm. g) To carry out to machining of lining. h) UT Test to be carry out to ensure proper bonding. i) Thickness of white metal should not be less than 3.5 mm j) Certificate regarding material chemistry and ultrasonic test to provide by the contractor