; and (ii) provided to the submitter a draft of a determination under paragraph (3), including any supporting information. (D) Definition For purposes of this paragraph, the term critical energy resource means, as determined by the Secretary of Energy, any energy resource— (i) that is essential to the energy sector and energy systems of the United States; and (ii) the supply chain of which is vulnerable to disruption. . 10016. Keeping America’s refineries operating (a) In general The owner or operator of a stationary source described in subsection (b) of this section shall not be required by the regulations promulgated under section 112(r)(7)(B) of the Clean Air Act ( 42 U.S.C. 7412(r)(7)(B) ) to include in any hazard assessment under clause (ii) of such section 112(r)(7)(B) an assessment of safer technology and alternative risk management measures with respect to the use of hydrofluoric acid in an alkylation unit. (b) Stationary source described A stationary source described in this subsection is a stationary source (as defined in section 112(r)(2)(C) of the Clean Air Act ( 42 U.S.C. 7412(r)(2)(C) ) in North American Industry Classification System code 324— (1) for which a construction permit or operating permit has been issued pursuant to the Clean Air Act ( 42 U.S.C. 7401 et seq. )