Inspection Threshold

Inspection Threshold

Definition(s)

Inspection Threshold

Maximum size of a crack-like imperfection which is defined to be acceptable by the inspection system. Source: API TR 5C3, Technical Report on Equations and Calculations for Casing, Tubing, and Line Pipe Used as Casing or Tubing; and Performance Properties Tables for Casing and Tubing, Upstream Segment, First Edition, December 2008. Global Standards  
Engineering Stress

Engineering Stress

Definition(s)

Engineering Stress

Force applied to the surface of a body divided by the original area of that surface. Source: API TR 5C3, Technical Report on Equations and Calculations for Casing, Tubing, and Line Pipe Used as Casing or Tubing; and Performance Properties Tables for Casing and Tubing, Upstream Segment, First Edition, December 2008. Global Standards  
Engineering Strain

Engineering Strain

Definition(s)

Engineering Strain

Dimensionless measure of the stretch of a deforming line element, defined as the change in length of the line element divided by its original length. Source: API TR 5C3, Technical Report on Equations and Calculations for Casing, Tubing, and Line Pipe Used as Casing or Tubing; and Performance Properties Tables for Casing and Tubing, Upstream Segment, First Edition, December 2008. Global Standards  
Effective Stress

Effective Stress

Definition(s)

Effective Stress

Combination of pressure and axial stress used in this Technical Report to simplify equations. NOTE: Effective stress as used in this Technical Report does not introduce a distinct, physically defined stress quantity. Effective stress is a dependent quantity, which is determined as a combination of axial stress, internal pressure, external pressure and pipe dimensions, and provides a convenient grouping of these terms in some equations. The effective stress is sometimes called the Lubinski fictitious stress. Source: API TR 5C3, Technical Report on Equations and Calculations for Casing, Tubing, and Line Pipe Used as Casing or Tubing; and Performance Properties Tables for Casing and Tubing, Upstream Segment, First Edition, December 2008. Global Standards  
E or Euler’s Constant

E or Euler’s Constant

Definition(s)

E or Euler's Constant

2,718 281 828. Source: API TR 5C3, Technical Report on Equations and Calculations for Casing, Tubing, and Line Pipe Used as Casing or Tubing; and Performance Properties Tables for Casing and Tubing, Upstream Segment, First Edition, December 2008. Global Standards  
Ductile Rupture

Ductile Rupture

Definition(s)

Ductile Rupture

Failure of a tube due to internal pressure and/or axial tension in the plastic deformation range. Source: API TR 5C3, Technical Report on Equations and Calculations for Casing, Tubing, and Line Pipe Used as Casing or Tubing; and Performance Properties Tables for Casing and Tubing, Upstream Segment, First Edition, December 2008. Global Standards  
Deterministic

Deterministic

Definition(s)

Deterministic

Approach which assumes all variables controlling a performance property are known with certainty. NOTE Pipe performance properties generally depend on one or more controlling parameters. A deterministic equation uses specific geometric and material property values to calculate a single performance property value. For design formulations, this value is the expected minimum. Source: API TR 5C3, Technical Report on Equations and Calculations for Casing, Tubing, and Line Pipe Used as Casing or Tubing; and Performance Properties Tables for Casing and Tubing, Upstream Segment, First Edition, December 2008. Global Standards  
Design Equation

Design Equation

Definition(s)

Design Equation

Equation which, based on production measurements or specifications, provides a performance property useful in design calculations. NOTE A design equation can be defined by applying reasonable extremes to the variables in a limit state equation to arrive at a conservative value of expected performance. When statistically derived, the design equation corresponds to a defined lower percentile of the resistance probability distribution curve. Source: API TR 5C3, Technical Report on Equations and Calculations for Casing, Tubing, and Line Pipe Used as Casing or Tubing; and Performance Properties Tables for Casing and Tubing, Upstream Segment, First Edition, December 2008. Global Standards
Coefficient of Variance

Coefficient of Variance

Definition(s)

Coefficient of Variance

Dimensionless measure of the dispersion of a random variable, calculated by dividing the standard deviation by the mean. Source: API TR 5C3, Technical Report on Equations and Calculations for Casing, Tubing, and Line Pipe Used as Casing or Tubing; and Performance Properties Tables for Casing and Tubing, Upstream Segment, First Edition, December 2008. Global Standards
Cauchy Stress or True Stress

Cauchy Stress or True Stress

Definition(s)

Cauchy Stress or True Stress

Force applied to the surface of a body divided by the current area of that surface. Source: API TR 5C3, Technical Report on Equations and Calculations for Casing, Tubing, and Line Pipe Used as Casing or Tubing; and Performance Properties Tables for Casing and Tubing, Upstream Segment, First Edition, December 2008. Global Standards
Hook Load

Hook Load

Definition(s)

Hook Load

“Hook load” is defined as the load being lifted plus the weight of the slings and rigging. Hook load may or may not include the weight of the hook block and wire rope. This may be determined from the crane’s load rating chart. Examples of ways to determine load weight are: Weight indicators, scales, and shorebase weighing. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards  

Hook Load

The load being lifted, including the weight of all rigging.. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards
Log

Log

Definition(s)

Log

A means to record activities conducted. EXAMPLE Record, a record book, a logbook, a computerized database, or an electronic data collector. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards

Log

A “log” is defined as: A record, a record book, a logbook, a computerized database or an electronic data collector. Note: This log should be used for Pre-use Inspection reporting, and may also be used for documenting crane usage. The crane cab, a weather tight enclosure on the crane, or inside the nearest building are examples of appropriate locations for storage of logs. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards  

Log

LOG or WELL LOG shall mean a systematic detailed record of formations encountered in the drilling of a well. Source: Oil and Gas Conservation Commission, Practice and Procedure, Code of Colorado Regulations, 2 CCR 404-1, February 2013. Regulations  

Log

“Log” means a systematic detailed and correct record of formations encountered in drilling a well. Source: Oil and Gas, New Mexico Administrative Code Title 19, Chapter 15, January 2013. Regulations
Hands on Proficiency

Hands on Proficiency

Definition(s)

Hands on Proficiency

“Hands On” proficiency is defined as a physical means of verifying the following: 1. Crane Operator’s dexterity and coordination. 2. Crane Operator’s familiarity with overall machine functions and characteristics. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards  
Pull Test

Pull Test

Definition(s)

Pull Test

A load that is applied to the crane structure that will not exceed 100 % of the crane’s onboard rated capacity as identified on the crane’s load chart. NOTE This is not a load test as described in 4.7.2 and Annex D. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards

Pull Test

A “pull test” is defined as a load that is applied to the crane structure that will not exceed 100% of the crane’s onboard rated capacity as identified on the crane’s load chart. THIS IS NOT A LOAD TEST AS DESCRIBED IN 3.5.3 AND APPENDIX E. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards  
Working Load

Working Load

Definition(s)

Working Load

The external load in pounds (kilograms), applied to the crane including the weight of load-attaching equipment such as load block, shackles, and slings. NOTE The maximum allowable working load for a given condition is the safe working load (SWL). Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards

Working Load

The external load in pounds (kilograms), applied to the crane including the weight of load-attaching equipment such as load block, shackles, and slings. The maximum allowable working load for a given condition would be the Safe Working Load (SWL). Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Sixth Edition, May 2007. Global Standards
Two-Blocking

Two-Blocking

Definition(s)

Two-Blocking

The condition when the lower load block, hook assembly or fastline ball contacts the upper load block or boom-point sheave assembly. 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
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