Swiveling

Swiveling

Definition(s)

Swiveling

The rotation of the load attachment portion (hook or shackle) of a load block (lower) or hook assembly about its axis of suspension in relation to the load line(s). Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards
Swing Gear

Swing Gear

Definition(s)

Swing Gear (also known as Ring Gear or Bull Gear)

External or internal gear with which the swing pinion on the revolving upper-structure meshes to provide swing motion. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards
Swing-Circle Assembly

Swing-Circle Assembly

Definition(s)

Swing-Circle Assembly

The swing-circle assembly is the connecting component between the crane revolving upper structure and the pedestal for cranes of certain types. NOTE The swing-circle assembly allows crane rotation and sustains the moment, axial, and radial loads imposed by crane operation. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards

Swing-Circle Assembly

The swing-circle assembly is the connecting component between the crane revolving upperstructure and the pedestal for cranes of certain types. It allows crane rotation and sustains the moment, axial, and radial loads imposed by crane operation. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards
Swing Circle

Swing Circle

Definition(s)

Swing Circle

A combination of rings with balls or rollers capable of sustaining radial, axial, and moment loads of the revolving upper-structure with boom and load. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards

Swing Circle

See swing bearing and roller path. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards
Swing Bearing

Swing Bearing

Definition(s)

Swing Bearing

A combination of rings with balls or rollers capable of sustaining radial, axial, and moment loads of the revolving upper-structure with boom and load. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards
Swing

Swing

Definition(s)

Swing (Slewing)

Rotation of the upper-structure for movement of loads in a horizontal direction about the axis of rotation. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards
Sling

Sling

Definition(s)

Sling

An assembly that connects the load to the material handling equipment. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards  

Sling

An assembly typically manufactured from wire rope, chain, or synthetic material used for lifting when connected between a load and a lifting mechanism. Source: API SPEC 7K, Drilling and Well Servicing Equipment Upstream Segment, Fifth Edition, June 2010 (August 2010). Global Standards Source:API SPECIFICATION 7K, Drilling and Well Servicing Equipment, Sixth Edition, December 2015. Global Standards
Safe Working Load (SWL)

Safe Working Load (SWL)

Definition(s)

Safe Working Load (SWL) (see Rated Capacity)

The maximum rated load within crane rated capacity for the given operating conditions. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards  

Safe Working Load

Design load reduced by the dynamic load. Source: API SPEC 7K, Drilling and Well Servicing Equipment Upstream Segment, Fifth Edition, June 2010 (August 2010). Global Standards  

Safe Working Load

The design load minus the dynamic load. Source: API SPEC 8C, Drilling and Production Hoisting Equipment (PSL 1 and PSL 2), Fifth Edition, April 2012. Global Standards  

Safe Working Load

Safe working load means the load for which the hook is to be approved. Source: IMO Resolution MSC.81(70), Revised Recommendation on Testing of Life-Saving Appliances, 11 December 1998, International Maritime Organization. Regulatory Guidance  

Safe Working Load

“Safe working load” means, with respect to materials handling equipment, the maximum load that the materials handling equipment is designed and constructed to handle or support safely. Source:  Nova Scotia Offshore Petroleum Occupational Health & Safety Requirements, Canada-Nova Scotia Offshore Petroleum Board, Canada, December 2000. Regulations Source: Oil and Gas Occupational Safety and Health Regulations, SOR/87-612, Canada, current to April 29, 2013. Regulations  

Safe Working Load

“Safe working load” means, with respect to materials handling equipment, the maximum load that the materials handling equipment is designed and constructed to handle or support safely. Source: Rules for Classification and Construction, IV Industrial Services, 6 Offshore Technology, 9 Guideline for Personnel Transfers by Means of Lifting Appliances, Edition 2011, Germanischer Lloyd SE, Global Standards
Running Rope

Running Rope

Definition(s)

Running Rope

A rope which travels around sheaves or drums. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards
Rotation-Resistant Rope

Rotation-Resistant Rope

Definition(s)

Rotation-Resistant Rope

A wire rope consisting of an inner layer of strand laid in one direction covered by a layer of strand laid in the opposite direction. NOTE A rotation-resistant rope has the effect of counteracting torque by reducing the tendency of the finished rope to rotate. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards

Rotation-Resistant Rope

A wire rope consisting of an inner layer of strand laid in one direction covered by a layer  of strand laid in the opposite direction. This has the effect of counteracting torque by reducing the tendency of the finished rope to rotate. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards
Rope

Rope

Definition(s)

Rope

Wire rope unless otherwise specified. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards

Rope

Refers to wire rope unless otherwise specified. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards
Rolling Element

Rolling Element

Definition(s)

Rolling Element

The balls or rollers contained between the rings of the swing bearing. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards

Rolling Element

The balls or rollers contained between the rings of the swing-circle bearing. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards
Roller Path

Roller Path

Definition(s)

Roller Path

The surface upon which the rollers that support the revolving upper-structure bear. NOTE A roller path can accommodate cone rollers, cylindrical rollers, or live rollers Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards

Roller Path

The surface upon which the rollers that support the revolving upper-structure bear. It may accommodate cone rollers, cylindrical rollers, or live rollers. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards
Ring Gear

Ring Gear

Definition(s)

Ring Gear

External or internal gear with which the swing pinion on the revolving upper-structure meshes to provide swing motion. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards

Ring Gear

See swing gear (also known as bull gear). Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards
Reeving

Reeving

Definition(s)

Reeving

A rope system where the rope travels around drums and sheaves. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards
Rated Capacity

Rated Capacity

Definition(s)

Rated Capacity

Rated flow of a pressure-relief device, determined in accordance with the pressure design code or regulation and supplied by the manufacturer.
  • NOTE: The capacity marked on the device is the rated capacity on steam, air, gas, or water as required by the applicable code.
Source: API STD 521, Pressure-relieving and Depressuring Systems, Sixth Edition, January 2014. Global Standards

Rated Capacity

The maximum rated load within crane rated capacity for the given operating conditions. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards

Rated Capacity

The rated load or Safe Working Load (SWL) at specified radii as established by the manufacturer which are the maximum loads at those radii for the conditions specified. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards  

Rated Capacity

Maximum load that a lifting appliance is designed to lift under specific conditions NOTE: Rated capacity which corresponds to SWL used by International Labour Organization (ILO) Source: Rules for Classification and Construction, IV Industrial Services, 6 Offshore Technology, 9 Guideline for Personnel Transfers by Means of Lifting Appliances, Edition 2011, Germanischer Lloyd SE, Global Standards
Qualified Rigger

Qualified Rigger

Definition(s)

Qualified Rigger

Anyone who attaches or detaches loads or loose gear to lifting devices. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards

Qualified Rigger

A rigger is anyone who attaches or detaches lifting equipment to loads or lifting devices. In order to be considered a Qualified Rigger, the person shall have successfully completed a rigger-training program in accordance with Appendix A3. The minimum requirements for a Qualified Rigger are outlined in detail in 3.1.4 and Appendix A3. A Qualified Crane Operator is also a Qualified Rigger. Riggers will remain qualified provided they successfully complete the refresher training requirements outlined in 3.1.4. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards
Qualified Inspector

Qualified Inspector

Definition(s)

Qualified Inspector

A person so designated by the employer who by reason of appropriate experience and training, has successfully completed classroom-type training on crane maintenance and troubleshooting; on hoist troubleshooting and overhaul; and on the structural aspects of offshore cranes, which gives a knowledge of structurally critical components and critical inspection areas. These minimum training requirements are outlined in Appendix A2. Additionally, individuals recognized by regulatory authorities (“Authorized Surveyors” or “certifying authorities”) may conduct inspections of cranes pursuant to this edition, provided they meet the requirements of Appendix A2. With successful completion of this minimum training supplemented with requalification at a minimum of every four (4) years, the inspector is considered qualified to perform the Initial, Pre-use, Monthly, Quarterly, and Annual Inspections. The scope of these inspections is outlined in 4.1.2. It is not a requirement for a Qualified Inspector to also be a Qualified Crane Operator. However, a Qualified Inspector is not a Qualified Crane Operator unless they have also completed the requirements of a Qualified Crane Operator (see 3.1.2), including the physical outlined in 3.1.2b and Appendix A1. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards  

Qualified Inspector

An inspector as defined in the Unfired Pressure Safety Orders, and who holds a valid certificate of competency issued by the Division. Source: Petroleum Safety Orders--Drilling and Production, Definitions, California Code of Regulations, 8 CCR § 6505, December 2012. Regulations  
Qualified Crane Operator

Qualified Crane Operator

Definition(s)

Qualified Crane Operator

A person who performs the act or process of raising or lowering a load using a mechanical or nonmechanical crane. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards

Qualified Crane Operator

A person so designated by the employer who has appropriate offshore experience and training. Such appropriate experience and training must comprise minimum amounts of classroom-type sessions and hands-on field training, on cranes specific to the type of crane to be operated by the qualifying Crane Operator. These minimum requirements are outlined in detail in 3.1.2 and Appendix A1, Crane Operator Training. This RP should be followed to qualify Crane Operators of two crane types: 1) operation of non-mechanical cranes and/or 2) operation of mechanical cranes (those with freefall capability). With this minimum training, qualifying Crane Operators should be qualified to safely operate the crane(s) on which they have been trained. Also, with this minimum training, the qualifying Crane Operator should also be sufficiently qualified to perform the crane inspections outlined in 4.1.2, with the exception of the Initial, Quarterly, and Annual Inspections. Crane Operators will remain qualified to operate the cranes on which they have been trained, provided they successfully complete the refresher training requirements outlined in 3.1.2d. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards
Pendant Line

Pendant Line

Definition(s)

Pendant Line

A standing (not running) rope of specified length with fixed end connections. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards

Pendant Line (also known as Guy Rope)

A non-operating standing rope of specified length with fixed end connections. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards
Pedestal

Pedestal

Definition(s)

Pedestal (also known as Base)

The supporting substructure upon which the revolving upper-structure is mounted. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards
Pawl

Pawl

Definition(s)

Pawl (dog)

A mechanical device that prevents motion in one or more directions. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards

Pawl (dog)

A device for positively holding a member against motion in one or more directions. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards
Overhaul Ball

Overhaul Ball

Definition(s)

Overhaul Ball

The weight on a single part line used to pull the wire rope off the drum with gravitational assistance. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards
Overhaul

Overhaul

Definition(s)

Overhaul

Ability of a weight on the end of the hoist line to unwind rope from the drum when the brake is released. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards  

Overhaul

Action to restore to a fully serviceable condition equipment which has been in use or in storage for a period of time but which is not faulty. Source: IEC 60079-19:2015, Explosive atmospheres – Part 19: Equipment repair, overhaul and reclamation, Edition 3.1, March 2015. Global Standards
Out-of-Service

Out-of-Service

Definition(s)

Out-of-Service

When a crane is not capable of operating in a safe manner. NOTE Out-of-service conditions can be with the boom out of the boom rest or in the boom rest (stowed). Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards

Out-of-Service

A crane is out-of-service when the operator is not controlling the crane. Out-of-service conditions may be with the boom out of the boom rest or in the boom rest (stowed). Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards
Operator’s Station

Operator’s Station

Definition(s)

Operator's Station

The designated location for the operator to operate the crane. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards  
Onboard Lift

Onboard Lift

Definition(s)

Onboard Lift

A crane lifting a load from and to the deck of the platform/vessel that the crane is mounted on. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards  
Offboard Lift

Offboard Lift

Definition(s)

Offboard Lift

A crane lifting a load from or to anywhere not on the platform/vessel that the crane is mounted on (from/to supply boats, for example). Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards  
Luffing

Luffing

Definition(s)

Luffing

The operation of changing boom angle in a vertical plane (in effect changing the working radius). Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards

Luffing

The operation of changing boom angle in a vertical plane. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards