Regulations, Codes & Standards: This competency is intended to demonstrate your knowledge and awareness of Canadian regulations, codes and standards. This includes local engineering procedures and practices as applicable.
Situation
XYZ was mandated to perform a mechanical maintenance of units G4, G5 and G9 at XYZ, run by XYZ. My task was to visit the site & support site managers and crew for shaftline assessment and at site issue resolution.
Action
I visited the XYZ site in XYZ during the maintenance and took following actions Before visiting made sure I will be able toperform shaftline analysis at site as time is of importance. I winesssed the Shaftline corrections were conducted for Units 4, 5, and 9 done by the crew. The focus was on aligning the units according to CEATI standards, specifically addressing axis verticality, guide bearing straightness, and runout at critical points such as the turbine bearing and shaft seal. Measurements from dial indicators at 3 different locations were provided to me I calculated the resultant values for various outcomes like concentricity of runner with discharge ring., straightness at lower guide bearing, verticality of rotating axis, runout at lower guide bearing , run-out at turbine guide bearing and to make sure all the values were under the tolerance limits as per CEATI standard Part V.
Outcome
Recommndation for all units were provided for adjustments. Following adjustments, corrections were performed and unit was within tolerance as per CEATI standard. Resultant Verticality: CEATI tolerance of 0.00072 in/ft. Concentricity of Runner: The tolerance limit of 0.019 inches. Runout at Turbine Bearing: Within the 0.034 inches tolerance.