API 2D-2 2020 pdf download.Training for Ofshore Pedestal- Mounted Crane Riggers, Operators, and Inspectors.
1 Scope This standard establishes general principles for the training of personnel for safe operations and maintenance of ofshore pedestal-mounted cranes, as a companion to API 2D and API 2C. This standard also provides requirements and recommendations for personnel seeking qualifcation as a crane rigger, operator, or inspector. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any addenda or errata) applies. API Recommended Practice 2D, Operation and Maintenance of Ofshore Cranes API Specifcation 2C, Ofshore Pedestal-Mounted Cranes 3 Terms, Defnitions, and Abbreviations 3.1 Terms and Defnitions For the purposes of this document, the following terms and defnitions apply. 3.1.1 A-frame gantry mast A structural frame, extending above the machinery deck or upper structure to which the boom support ropes are reeved. 3.1.2 articulating boom folding boom knuckle boom A type of crane boom where the boom tip can change its angle relative to the base section of the boom. 3.1.3 anti-two-blocking A means to protect hoist ropes, structural components, and machinery from damage that can occur when two sheave groups (e.g. load block and boom tip) come into contact as the hoist cable is drawn in. 3.1.4 auxiliary hook A supplemental load block of lighter capacity and usually higher speed than provided for the main load block. 3.1.5 axis of rotation The vertical axis around which the crane upper structure rotates.
3.1.6 base (mounting) pedestal (base) The supporting substructure upon which the revolving upper structure is mounted. 3.1.7 basket hitch A sling confguration whereby the sling is passed under the load and has both ends, end attachments, eyes or handles on the hook or a single master link. 3.1.8 blind lift Lifts where the load is made out of the view of the crane operator. 3.1.9 boom A member hinged to the revolving upper structure and used for supporting the hoist tackle. 3.1.10 boom angle The angle above or below horizontal of the longitudinal axis of the base boom section. 3.1.11 boom angle indicator An accessory that indicates the angle of the boom above horizontal. 3.1.12 boom hoist boom hoist mechanism A mechanism responsible for raising and lowering the boom. 3.1.13 boom hoist wire rope Wire rope that operates on a drum controlling the angle positioning of the boom. 3.1.14 boom length The straight-line distance from the centerline of boom heel-pin to the centerline of the boom-point main load hoist sheave pin, measured along the longitudinal axis of the boom. 3.1.15 boom stop A device used to prevent the boom from falling backward in the case of high winds or a sudden release of load. 3.1.16 boomline Boom hoist rope that reels on drums or passes over sheaves. NOTE See 3.1.13 for boom hoist wire rope. 3.1.17 brake A device used for holding, retarding, or stopping motion. 3.1.18 bridle sling A multi-leg sling attached to a single point ring.
3.1.19 cab An enclosure for the operator and the machine operation controls. 3.1.20 center of gravity Point at which the total mass of a body may be regarded as being concentrated, or about which the parts of a body exactly balance each other. 3.1.21 check valve A mechanical device that normally allows fuid to fow through it in only one direction. 3.1.22 choker hitch A sling confguration with one end of the sling passing under the load and through an end attachment, handle or eye on the other end of the sling. 3.1.23 clutch A means for engagement or disengagement of power. 3.1.24 counterweight Weight used to supplement the weight of the machine in providing stability for lifting working loads and usually attached to the rear of the revolving upper structure. 3.1.25 crane A pedestal-mounted elevating and rotating lift devices for transfer of materials and/or personnel to or from marine vessels, barges, and structures, including the sea, or the seabed. 3.1.26 crane owner The individual, partnership, frm, or corporation who owns the crane. NOTE For the purposes of this standard, a crane owner can be the lease operator (i.e. oil company), drilling or well service contractor, vessel owner, or company that provides temporary crane service. 3.1.27 critical component Any component of the crane assembly devoid of redundancy and/or auxiliary restraining devices whose failure would result in an uncontrolled descent of the load or uncontrolled rotation of the upper structure. 3.1.28 critical rigging component Any component of the rigging equipment devoid of redundancy and/or auxiliary restraining devices whose failure would result in an uncontrolled descent of the load. 3.1.29 designated representative Selected or assigned by the employer or the employer’s representative as being qualifed to perform specifc duties. 3.1.30 emergency load lowering A means of lowering in the event of power failure or control-system failures.