Billing Code - PHMSA - Department of Transportation

such as hybrid vehicles. Some double layer capacitors contain flammable liquid absorbed
in a solid with small amounts present as free liquid while others use a liquid electrolyte.
Currently, the HMR do not contain specific requirements to address the transport of
electric double layer capacitors.
New Section 173.176 addresses electric double layer capacitors, prescribing the
testing, marking, safety, and packaging requirements for electric double layer capacitors
with an energy storage capacity greater than 0.3 Wh. PHMSA is incorporating these
requirements consistent with the 17 th Revised Edition of the UN Model Regulations.
These amendments address potential electrical and other hazards arising from the release
of hazardous materials during the transportation of these articles.
Section 173.181
Section 173.181 prescribes the non-bulk packaging requirements applicable to
pyrophoric liquids. Paragraph (b) of this section specifies the specification boxes
authorized to package these substances. PHMSA is revising paragraph (b) by adding
packaging authorizations for steel boxes (4A), aluminum boxes (4B), metal boxes, other
than steel or aluminum (4N), or fiberboard boxes (4G); steel drums (1A1 or 1A2),
aluminum drums (1B1 or 1B2), metal drums, other than steel or aluminum (1N1 or 1N2),
plywood drums (1D), or fiber drums (1G); or steel jerricans (3A1 or 3A2) or aluminum
jerricans (3B1 or 3B2).
Section 173.183
Section 173.183 prescribes the packaging requirements for nitrocellulose base film.
To provide greater flexibility in packaging selection, PHMSA is adding other metal drums
(4A2), aluminum jerricans (3B2), and steel, aluminum or other metal (4A, 4B, 4N) boxes,
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