§ 761.40 Marking requirements.
(a) Each of the following items in existence on or after July 1, 1978 shall be marked as illustrated in Figure 1 in § 761.45(a): The mark illustrated in Figure 1 is referred to as ML throughout this subpart.
(1) PCB Containers;
(2) PCB Transformers at the time of manufacture, at the time of distribution in commerce if not already marked, and at the time of removal from use if not already marked. [Marking of PCB-Contaminated Electrical Equipment is not required];
(3) PCB Large High Voltage Capacitors at the time of manufacture, at the time of distribution in commerce if not already marked, and at the time of removal from use if not already marked;
(4) Equipment containing a PCB Transformer or a PCB Large High Voltage Capacitor at the time of manufacture, at the time of distribution in commerce if not already marked, and at the time of removal of the equipment from use if not already marked;
(5) PCB Large Low Voltage Capacitors at the time of removal from use (see also paragraph (k) of this section).
(6) Electric motors using PCB coolants (See also paragraph (e) of this section).
(7) Hydraulic systems using PCB hydraulic fluid (See also paragraph (e) of this section);
(8) Heat transfer systems (other than PCB Transformers) using PCBs (See also paragraph (e) of this section);
(9) PCB Article Containers containing articles or equipment that must be marked under paragraphs (a) (1) through (8) of this section;
(10) Each storage area used to store PCBs and PCB Items for disposal.
(b) As of October 1, 1978, each transport vehicle loaded with PCB Containers that contain more than 45 kg (99.4 lbs.) of liquid PCBs at concentrations of ≥50 ppm or with one or more PCB Transformers shall be marked on each end and each side with the ML mark as described in § 761.45(a).