Hot bolting is a term used to describe the technique of re-tightening or replacing flange connection bolts when a pipe is live – (full of liquid or gas). Benefits of Hot Bolting (Single Stud Replacement) : Allows damaged or corroded bolts to be replaced, prevents unplanned shutdown, increases safety, helps towards improved joint integrity, reduces duration of shutdown, limits the number of ‘containment breaks, increases efficiency, replaces ‘old for new’ bolts before shutdown, and reduces costs.