40 CFR § 273.4 - Applicability - Mercury-containing equipment.
(a) Mercury-containing equipment covered under this part 273. The requirements of this part apply to persons managing mercury-containing equipment, as described in § 273.9, except those listed in paragraph (b) of this section.
(b) Mercury-containing equipment not covered under this part 273. The requirements of this part do not apply to persons managing the following mercury-containing equipment:
(2) Mercury-containing equipment that is not a hazardous waste. Mercury-containing equipment is a hazardous waste if it exhibits one or more of the characteristics identified in part 261, subpart C of this chapter or is listed in part 261, subpart D of this chapter; and
(3) Equipment and devices from which the mercury-containing components have been removed.
(c) Generation of waste mercury-containing equipment.
(1) Used mercury-containing equipment becomes a waste on the date it is discarded.
(2) Unused mercury-containing equipment becomes a waste on the date the handler decides to discard it.