A RCRA hazardous waste is a waste that either appears on one of three lists created by the U.S. Environmental Protection Agency, or, if not on the lists, exhibits one of four characteristics of hazardous waste.
How often should oxygen nasal cannulas be changed? Update: Our supplier recommended we change the cannulas monthly and the tubing every 60-90 days. My father has friends who's suppliers have had different guidelines.
CNG Tank Replacements. According to NFPA 52, NGV 2, AND CGA 6.4 standards CNG cylinders must be replaced prior to expiration, every 15 years (see tank label). CNG cylinders may also need to be replaced if any damage has come to the cylinder following a collision, vehicle fire, or due to exposure to excessive heat.