2.1 A general requirement for risk assessment is contained in the Management of Health and Safety at Work Regulations 1999 (the Management Regulations 1999), Regulation 3. Changes to the original Regulations passed in 1992 mean that the risk assessment must now include fire risks and precautions (see CHAPTER 14 : FIRE AND DSEAR ASSESSMENTS) and also risks to both young persons (under 18s) and new and expectant mothers (see CHAPTER 3: SPECIAL CASES). Other Regulations require more specific types of risk assessment, e.g. of hazardous substances COSHH, noise, manual handling operations, DSE, personal protective equipment, dangerous substances and asbestos in premises and work at height (these are dealt with in CHAPTERS 9-16 of the handbook).