Section 217.91 - Records and reports(a) Persons are required to make and preserve for at least three years, accurate and complete records of any transaction covered by this part or an official action.(b) Records must be maintained in sufficient detail to permit the determination, upon examination, of whether each transaction complies with the provisions of this part or any official action. However, this part does not specify any particular method or system to be used.(c) Records required to be maintained by this part must be made available for examination on demand by duly authorized representatives of the Department of Energy as provided in § 217.71 .(d) In addition, persons must develop, maintain, and submit any other records and reports to the Department of Energy that may be required for the administration of the Defense Production Act and other applicable statutes, and this part.(e) Section 705(d) of the Defense Production Act, as implemented by E.O. 12919, provides that information obtained under this section which the Secretary deems confidential, or with reference to which a request for confidential treatment is made by the person furnishing such information, shall not be published or disclosed unless the Secretary determines that the withholding of this information is contrary to the interest of the national defense. Information required to be submitted to the Department of Energy in connection with the enforcement or administration of the Defense Production Act, this part, or an official action, is deemed to be confidential under section 705(d) of the Defense Production Act and shall be handled in accordance with applicable Federal law.