How often
Fall protection: before each use. Harnesses and lanyards: Category I daily, II monthly, III annual. Geronimo escape line: Derrickman weekly, Category II monthly, IV every 3 years. Man rider winch: before each use, Category I daily, and an annual OSHA inspection.
Source: OSHA 29 CFR 1910.140(c)(18); Nordic PM Plan 9.0 Table 4 (with note **) and Table 5; Nordic PM Plan 5.0 Table 2; Nordic R4 Manrider Winch 4.0