Patent ID: 7715516

Claim:
A method for delivery of a tool into a nuclear reactor jet pump submerged in a reactor pool, the method comprising: generating a plurality of command signals at a remotely located tool delivery device control module; positioning a tool delivery device having a submarine assembly adjacent an inlet of the jet pump within the reactor pool using at least one propulsion drive operably connected to the submarine assembly and responsive to at least one of the remotely generated command signals, the submarine assembly being interoperably coupled to a guide assembly via a linear coupling; maintaining a tool position controller of the submarine assembly in a substantially stable and constant location within the reactor pool adjacent the inlet of the jet pump utilizing a ballasted floatation assembly configured to provide stability to the submarine assembly; positioning a guide latch of the guide assembly in contact with the inlet of the jet pump, in response to at least one of the remotely generated command signals, utilizing the linear coupling to move the guide assembly relative to the substantially stable submarine assembly; coupling the guide latch to the inlet of the jet pump, in response to at least one of the remotely generated command signals; and inserting a tool from the tool delivery device through the guide assembly, the inlet, and into the jet pump using the tool position controller of the submarine assembly.