For general plumbing works there are a number of associated risks, The examples below are the main risks associated with plumbing works derived from pipe cutting and soldering, brazing works and fire hazards.
Contact with naked flames, solder, Hot pipes.
Ignition of debris, building materials
Manual handling/Strain injuries
Lifting heavy items such as hot water tanks, Bath tubs, Toilets etc
Fumes from solder and brazing work
Trips and Falls
Untidy work areas, training pipes and cables
From pipe cutting.
A Risk Assessment for General Plumbing work is available HERE