Patent ID: 8561287

Claim:
A tool for use in servicing Local Power Range Monitor assembly of a nuclear reactor vessel, comprising: a structural member having a first bore, the first bore when in use, receives a Local Power Range Monitor device associated with the Local Power Range assembly; a headpiece provided at a first end of the structural member, the headpiece having a plurality of projections, said projections when in use, fittingly engage with a plurality of bores provided in a seal of the Local Power Range Monitor assembly; and a nut engaging assembly slideably mounted on the structural member, the nut engaging assembly having a housing defining a second bore, the housing having a first nut engaging portion and a second nut engaging portion smaller than the first nut engaging portion, the nut engaging assembly being free to slide along the structural member and over the headpiece to a position wherein the first and second nut engaging portions extend beyond the headpiece.