29 CFR 1920.2: Variances.

(a) Variances from standards in parts 1915 through 1918 of this chapter may be granted in the same circumstances in which variances may be granted under sections 6(b) (6)(A) or 6(d) of the Williams-Steiger Occupational Safety and Health Act of 1970 (29 U.S.C. 655). The procedures for the granting of variances from Parts 1915-1918 of this chapter are those published in Part 1905 of this chapter.

(b) Any requests for variances shall also be considered requests for variances under the Williams-Steiger Occupational Safety and Health Act of 1970, and any variance from §§ 1910.13 through 1910.16 of this chapter which adopt parts 1915-1918 of this chapter, shall be deemed a variance from the standard under both the Longshoremen's and Harbor Workers' Compensation Act and the Williams-Steiger Occupational Safety and Health Act of 1970.