21 C.F.R. § 898.14
(a) A request for an exemption or variance shall be submitted in the form of a petition under § 10.30 of this chapter and shall comply with the requirements set out therein. The petition shall also contain the following:
(b) An exemption or variance is not effective until the agency approves the request under § 10.30(e)(2)(i) of this chapter.
Effective Date Note:At 62 FR 25477, May 9, 1997, § 898.14 was stayed pending Office of Management and Budget approval of information collection and recordkeeping requirements.