Global Standards

Definition(s)

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Settlement

Permanent downward movement of a structure as a result of its own weight and other actions. Source: API RP 2GEO, Geotechnical Foundation Design Considerations, First Edition, April, 2011, Addendum 1, October 2014. Global Standards Source: API Recommended Practice 2GEO, Geotechnical and Foundation Design Considerations, First Edition, April 2015 (Addendum 1, October 2014). Global Standards

Definition(s)

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Seabed

Materials below the sea in which a structure is founded. NOTE The seabed can be considered as the half-space below the sea floor. Source:API RP 2EQ, Seismic Design Procedures and Criteria for Offshore Structures, First Edition, November 2014. Global Standards

Seabed

Materials below the sea in which a structure is founded, whether of soils such as sand, silt or clay, cemented material or of rock NOTE The seabed can be considered as the half-space below the sea floor. [ISO 19901-4:2003] Source: API RP 2MET, Derivation of Metocean Design and Operating Conditions, First Edition, November 2014. Global Standards

Seabed

Materials below the sea in which a structure is founded, whether of soils such as sand, silt or clay, cemented materials or of rock NOTE 1 The seabed can be considered as the half-space below the seafloor. NOTE 2 Offshore foundations are most commonly installed in soils, and the terminology in this part of ISO 19901 reflects this. However, the requirements equally apply to cemented seabed materials and rocks. Thus, the term “soil” does not exclude any other material at or below the seafloor. NOTE 3 As yet there are no universally accepted definitions of the various types of soil and rock, see A.6.4.3. Source: API RP 2GEO, Geotechnical Foundation Design Considerations, First Edition, April, 2011, Addendum 1, October 2014. Global Standards Source: API Recommended Practice 2GEO, Geotechnical and Foundation Design Considerations, First Edition, April 2015 (Addendum 1, October 2014). Global Standards

Definition(s)

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Static/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, Seventh Edition, December 2014. Global Standards

Definition(s)

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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

Definition(s)

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Self-erecting Cranes

A lifting device that is not part of the original platform design and installed for a specific application or task and will not remain as a permanent part of the facility. NOTE A temporary crane can be certified to API 2C or other justification by engineering analysis, review and materials of construction. Source: API RP 2D, Operation and Maintenance of Offshore Cranes, Seventh Edition, December 2014. Global Standards

Definition(s)

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Simple Lifts

The following are classified as simple lifting operations:

1. equipment specifically installed by a crane operator;
2. load has known and evaluated weight;
3. center of gravity below the lifting point;
4. use of a certified lifting point directly above the load;
5. ample headroom;
6. not sensitive, difficult or in restricted areas;
7. use of one crane;
8. unlikely to be affected by changing environmental conditions;
9. experienced and competent crane operator;
10. standard rigging arrangements;
11. suitable working area available;
12. relevant permits.

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