Safe Work Practices include occupant protection, worksite containment, using specialized cleaning methods, products and devices, and not using prohibited methods. They are required during most work activities under the rule in units affected by subparts D F G H I J K L and M.

24CFR 35.1350 Safe work practices.
  (a) Prohibited methods. Methods of paint removal listed in Sec. 35.140 shall not be used.
  (b) Occupant protection and worksite preparation. Occupants and their belongings shall be protected, and the worksite prepared, in accordance with Sec. 35.1345.
  (c) Specialized cleaning. After hazard reduction activities have been completed, the worksite shall be cleaned using cleaning methods, products, and devices that are successful in cleaning up dust-lead hazards, such as a HEPA vacuum or other method of equivalent efficacy, and lead-specific detergents or equivalent.
  (d) De minimis levels. Safe work practices are not required when maintenance or hazard reduction activities do not disturb painted surfaces that total more than:
  (1) 20 square feet (2 square meters) on exterior surfaces;
  (2) 2 square feet (0.2 square meters) in any one interior room or space; or
  (3) 10 percent of the total surface area on an interior or exterior type of component with a small surface area. Examples include window sills, baseboards, and trim

Interpretive Guidance: 
Training
Extent of Supervision
De Minimis Levels