procurement of main turbine journal bearing , main turbine journal bearing , main turbine journal front bearing no.1 of hpt model no : h30-100-2 of single flow 14 reaction stages size : d 250 x 180 mm journal bearing with spherical piece & spherical support (without bearing cap), bearing shells are provided with babbit face. make : m/s. omega (or) its equivalent specification & testing : babbitting & bore machining of tg bearing by fine machining & colour machining of torus piece & cylindrical support of tg bearing. 1. babbitting in controlled electric furnace. 2.babbitting by centrifuging process with virgin lead free tin based white metal conforming to orgov-738. 3. finish machining bearing bore to required size. ultrasonic test: bearing should be tested ultrasonically for white metal bond conforming to iso spec 4386-1-3-c dye penetrant test: dye penetrant test on surface and joints for pinholes, inclusion & cracks conforming to iso spec 4386-3-c note : one to one replacement of the existing bearing available at site