Cranes and Derricks in Construction: Revising the Exemption for Digger Derricks.Cranes and Derricks in Construction: Underground Construction and Demolition.Note: The notices in this list provide additional information that is not necessarily connected to a specific OSHA standard highlighted on this Safety and Health Topics page. Gear Certification () Gear Certification ()ġ919 Subpart C - Duties of Persons Accredited To Certificate Vessels' Cargo Gearġ919.12, Recordkeeping and related procedures concerning records in custody of the vessel.ġ919 Subpart D - Certification of Vessels' Cargo Gearġ919.15, Periodic tests, examinations and inspections.ġ919.21, Marking and posting of safe working loads.ġ919.24, Limitations on use of wire rope.ġ919 Subpart E - Certification of Vessels: Tests and Proof Loads Heat Treatment Competent Personsġ919.28, Unit proof tests-cranes and gear accessory thereto.ġ919 Subpart H - Certification of Shore-Based Material Handling Devicesġ919.73, Unit proof test and examination of derricks.ġ919.75, Determination of crane or derrick safe working loads and limitations in absence of manufacturer's data.