Not later than 30 months after December 27, 2020, the Consumer Product Safety Commission (referred to in this section as the “Commission”) shall promulgate a final rule to require flame mitigation devices in portable fuel containers that impede the propagation of flame into the container, except as provided in paragraph (3).
Any determination made by the Commission under this subsection shall be published in the Federal Register.
If the requirements of a voluntary standard that meet the conditions of paragraph (3) are subsequently revised, the organization that revised the standard shall notify the Commission after the final approval of the revision.
Not later than 180 days after the Commission is notified of a revised voluntary standard described in subparagraph (A) (or such later date as the Commission determines appropriate), such revised voluntary standard shall become enforceable as a consumer product safety rule promulgated under section 2058 of this title, in place of the prior version, unless within 90 days after receiving the notice the Commission determines that the revised voluntary standard does not meet the requirements described in paragraph (3).
The Commission, at any time after publication of the consumer product safety rule required by paragraph (1), a voluntary standard is treated as a consumer product safety rule under paragraph (4), or a revision is enforceable as a consumer product safety rule under paragraph (5)  may initiate a rulemaking in accordance with section 553 of title 5 to modify the requirements or to include any additional provision that the Commission determines is reasonably necessary to protect the public against flame jetting from a portable fuel container. Any rule promulgated under this subsection shall be treated as a consumer product safety rule promulgated under section 2058 of this title.