The document discusses proper bolt tightening procedures for pipework. It emphasizes that bolts should not be overtightened, as this can compromise the integrity of the pipework and cause safety issues. There are specified torque specifications for every job that must be followed. Overtightening bolts subjects them to more stress than they are designed for and can cause fatigue or weakening over time. The document also recommends using torque guns when possible to avoid hand injuries from manual tightening.