Abstract: Breaks in the lining of a protectively lined reactor vessel are repaired without introducing unwanted electrical paths through the vessel. Specifically, the breaks are repaired using a plug comprising an insulated anchor stud anchored into the portion of the metal support wall underlying the break; a sealing gasket disposed on the portion of the protective lining surrounding the break; a washer disposed outside the sealing gasket; and a clamping arrangement mechanically coupling the washer and the anchor stud for clamping the gasket onto the protective lining throughout a path surrounding the break.

Abstract: An apparatus for circulating and cooling a liquid lubricant utilized for lubricating an external device such as a mechanical seal. A housing has an internal lubricant reservoir and at least one peripheral outer sidewall with axially spaced and lower end wall portions in sealed relation with the peripheral outer sidewall. A cooling chamber is disposed about at least a portion of the internal reservoir and within the housing in communicating relation with the internal reservoir and is formed at least in part by the outer peripheral sidewall such that heat is transferable from within the chamber to an outside atmosphere.