Method for mitigating stress corrosion cracking at an internal weld area in piping of a nuclear power plant includes the steps of actuating a radially movable tool to produce a radial bad against the internal surfaces at or near the weld area to create a deep residual compressive stress state at the wetted surface of the weld. The first building is normally an outbuilding and the second building is a residence. The photomask may be formed and the photomask may be used to manufacture microelectronic devices. Additionally, the processor is operable to process the incoming interrupts according to the modified interrupt priorities responsive to modifying the interrupt priorities. In a case where the background removal level is a level for not removing the background, the background removal processing is applied to color image data and then monochrome image data is generated based on the image data having underdone the background removal processing.