For Individual protection it is recommended to use a helmet, safety glasses, PVC clothing, boot made with special PVC and Polyurethane alloy, Level ”A” coveralls, PVC gloves and autonomous set with mask and oxygen cylinder. Very important to make available individually to the workers involved in the operationalization of the refrigeration systems, the product MSDS (Product Safety Information Sheet) (Ammonia NH3) or Ammonia Anhydrous, as it is mandatory documentation in accordance with NBR 14.725 / 2009 , part 2 (criteria for classification of dangerous products) and part 4 (preparation of the MSDS).