Annular Linear Induction Pump (ALIP) is employed for low flow rate pumping of liquid metals because of its maintenance free operation. In order to monitor pump vibration during operation, a waveguide with accelerometer combination is employed. The waveguide is a Stainless Steel (SS) rod of 300 mm length and 20 mm diameter which is provided with a threaded provision at one end for mounting the accelerometer. The other end of the waveguide is welded to the shell of the ALIP of 3 mm thickness. These waveguides are to be attached to the ALIP in different orientations. The weld connecting the waveguide to the shell of ALIP is subjected to fatigue loading caused due to pump vibration. This paper discusses the analysis carried out to determine the fatigue life of the weld using ASME SECTION VIII DIVISION 2.
Fast breeder reactors (FBRs) utilize liquid metals as coolant. However, inservice inspection of components using conventional optical methods is impossible in sodium due to its opacity. Ultrasonic technique is therefore employed for this purpose which requires the deployment of ultrasonic transducers (UTs) inside the reactor using a carrier mechanism. The carrier mechanism should have a proper kinematic design to access critical locations of reactor internals and ensure that transducers are positioned within close tolerances. Sweep arm scanner (SAS), as a carrier mechanism, is being developed to inspect and map the complete core of FBRs. Kinematic and dynamic analysis of motions is carried out to estimate capacity of drive motors and linear actuators.
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