Non-Exposed Bolting

Non-Exposed Bolting

Definition(s)

Non-Exposed Bolting

Bolting that is not directly exposed to sour environments and is not intended to be buried, insulated, equipped with flange protectors, or otherwise denied direct atmospheric exposure. Source: API RP 17A Addendum 1, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, December 2010. Global Standards
Multistage Cross-Over Spool

Multistage Cross-Over Spool

Definition(s)

Multistage Cross-Over Spool

Flanged or other connected equipment with more than one restricted-area sealing means to provide suitable capability to suspend and seal around multiple inner strings of casing or tubing at several stages. NOTE A multistage cross-over spool may have a top connector with a pressure rating above that of the lower connector. Source: API RP 17A Addendum 1, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, December 2010. Global Standards
Material Performance

Material Performance

Definition(s)

Material Performance

Capabilities that it is necessary to demonstrate, as a minimum, for material to satisfy the criteria of this International Standard. Source: API RP 17A Addendum 1, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, December 2010. Global Standards
Master Valve

Master Valve

Definition(s)

Master Valve

Lowermost valve on the vertical bore of the christmas tree. NOTE Upper master valves and lower master valves are in general use. Upper master valves are sometimes called surface safety valves. Source: API RP 17A Addendum 1, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, December 2010. Global Standards
Manufacturing Operation

Manufacturing Operation

Definition(s)

Manufacturing Operation

Activity involving, but not limited to, the machining, welding, heat treating or other processes utilized to produce a finished product. Source: API RP 17A Addendum 1, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, December 2010. Global Standards
Make-And-Break, Verb

Make-And-Break, Verb

Definition(s)

Make-And-Break, Verb

Connect and disconnect a connection. Source: API RP 17A Addendum 1, Design and Operation of Subsea Production Systems—General Requirements and Recommendations, December 2010. Global Standards
Loose Flange

Loose Flange

Definition(s)

Loose Flange

Flange, as-manufactured, that is not intended to be made integral with equipment compliant to this International Standard. EXAMPLES Types of flanges include blind, threaded, spacer, welding neck, studded or other connected adapter flanges. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
Loose Connector

Loose Connector

Definition(s)

Loose Connector

Connector, as-manufactured, that is not intended to be made integral with another piece of wellhead and christmas tree equipment. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
Lock Screw Or Tie-Down Screw

Lock Screw Or Tie-Down Screw

Definition(s)

Lock Screw Or Tie-Down Screw

Threaded pin extending through the wall of a casing-head or tubing-head connection used to lock down hangers or energize seals. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
Linear Indication

Linear Indication

Definition(s)

Linear Indication

Liquid penetrant or magnetic particle examination indication whose length is equal to or greater than three times its width. Source: API Specification 16A, Specification for Drill-through Equipment, Fourth Edition, April 2017. Global Standards

Linear Indication

Surface NDE indication whose length is equal to or greater than three times its width. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards  

Linear Indication

An indication, revealed by NDE, having a length at least three times its width. 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 Source: API SPEC 8C, Drilling and Production Hoisting Equipment (PSL 1 and PSL 2), Fifth Edition, April 2012. Global Standards  

Linear Indication

Indication in which the length is equal to or greater than three times its width. Source: API SPEC 16R, Specification for Marine Drilling Riser Couplings, Exploration and Production Department, First Edition, January 1997. Global Standards
Escorted Operation

Escorted Operation

Definition(s)

Escorted Operation

Escorted operation means any operation in which a ship’s movement is facilitated through the intervention of an escort. Source: IMO resolution A.1021(26), Guidelines for ships operating in polar waters, 18 January 2010, International Maritime Organization. Regulatory Guidance
Job-Lot Traceability

Job-Lot Traceability

Definition(s)

Job-Lot Traceability

Ability to trace parts as originating from a job lot that identifies the included heat(s). Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards  

Job-Lot Traceability

Ability for parts to be traced as originating from a job lot which identifies the included heat(s). Source: API SPEC 16A, Specification for Drill-through Equipment, Third Edition, June 2004 (Errata/Supplement November 2004). Global Standards
Escort

Escort

Definition(s)

Escort

Escort means any ship with superior ice capability in transit with another ship. Source: IMO resolution A.1021(26), Guidelines for ships operating in polar waters, 18 January 2010, International Maritime Organization. Regulatory Guidance
Hot Isostatic Pressing (HIP)

Hot Isostatic Pressing (HIP)

Definition(s)

Hot Isostatic Pressing (HIP)

Special forming process used to compact and metallurgically bond metal powder. NOTE This process takes place within a flexible, metal container whose contents are formed into the desired shape by subjecting the container to high temperature and pressure in an autoclave. It produces a fully wrought structure. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
Conning Position

Conning Position

Definition(s)

Conning Position

Conning position means the stations in which the ship’s steering control and devices for ahead or astern operations are located. Source: IMO resolution A.1021(26), Guidelines for ships operating in polar waters, 18 January 2010, International Maritime Organization. Regulatory Guidance
Hold Period

Hold Period

Definition(s)

Hold Period

Period of time that the product is subjected to pressure and isolated from the pressure source. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards  

Hold Period

The period of time that the product is subjected to pressure and isolated from the pressure source. Source: API SPEC 16C, Specification for Choke and Kill Systems, First Edition, January 1993 (Reaffirmed 2001). Global Standards
Heat-Sensitive Lock-Open Device

Heat-Sensitive Lock-Open Device

Definition(s)

Heat-Sensitive Lock-Open Device

Device installed on a surface safety valve (SSV) actuator to maintain the SSV valve in a full open position until exposed to sufficient heat to cause the device to release and allow the SSV valve to close. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
Heat-Affected Zone (HAZ)

Heat-Affected Zone (HAZ)

Definition(s)

Heat-affected Zone (HAZ)

Region around a weld that has been affected by welding. Source: API Standard 2RD, Dynamic Risers for Floating Production Systems, Second Edition, September 2013. Global Standards

Heat-affected Zone (HAZ)

Portion of the base metal that has not been melted, but whose mechanical properties or microstructure has been altered by the heat of welding or cutting. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards  

Heat-Affected Zone (HAZ)

That portion of the base metal which has not been melted, but whose mechanical properties or microstructure has been altered by the heat of welding or cutting. Source: API SPEC 16A, Specification for Drill-through Equipment, Third Edition, June 2004 (Errata/Supplement November 2004). Global Standards Source: API SPEC 16C, Specification for Choke and Kill Systems, First Edition, January 1993 (Reaffirmed 2001). Global Standards Source: API SPEC 16RCD, Specification for Drill Through Equipment—Rotating Control Devices, Upstream Segment, First Edition, February 2005. Global Standards
Heat Treatment Or Heat Treating

Heat Treatment Or Heat Treating

Definition(s)

Heat Treatment Or Heat Treating

Specified, timed sequence of controlled heating and cooling of materials for the purpose of changing physical or mechanical properties. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards  

Heat Treatment Or Heat Treating

Alternate steps of controlled heating and cooling of materials for the purpose of changing mechanical properties. Source: API SPEC 14A, Specification for Subsurface Safety Valve Equipment, Eleventh Edition, October 2005 (Reaffirmed June 2012). Global Standards  

Heat Treatment Or Heat Treating

Alternate steps of controlled heating and cooling of materials for the purpose of changing physical or mechanical properties. Source: API SPEC 16A, Specification for Drill-through Equipment, Third Edition, June 2004 (Errata/Supplement November 2004). Global Standards
COLREG

COLREG

Definition(s)

COLREG

COLREG means the International Regulations for Preventing Collisions at Sea, 1972, as amended. Source: IMO resolution A.1021(26), Guidelines for ships operating in polar waters, 18 January 2010, International Maritime Organization. Regulatory Guidance  

COLREGs

COLREGs means Convention on the International Regulations for Preventing Collisions at Sea, 1972, including their annexes. Source: IMO Resolution MSC.253(83), Recommendation on Performance Standards for Navigation Lights, Navigation Light Controllers and associated equipment, 8 October 2007, International Maritime Organization. Regulatory Guidance
Heat-Treat Lot 〈Continuous Furnaces〉

Heat-Treat Lot 〈Continuous Furnaces〉

Definition(s)

Heat-Treat Lot 〈Continuous Furnaces〉

Group of pieces of material with the same nominal size that is moved sequentially through the heat treatment process using the same process parameters. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
Heat-Treat Lot 〈Batch Furnaces〉

Heat-Treat Lot 〈Batch Furnaces〉

Definition(s)

Heat-Treat Lot 〈Batch Furnaces〉

Material placed on loading or carry devices and moved as a batch through one heat treat cycle. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
Ice-covered waters

Ice-covered waters

Definition(s)

Ice-covered waters

Ice-covered waters means polar waters where local ice conditions present a structural risk to a ship. Source: IMO resolution A.1021(26), Guidelines for ships operating in polar waters, 18 January 2010, International Maritime Organization. Regulatory Guidance
Antarctic waters

Antarctic waters

Definition(s)

Antarctic waters

Antarctic waters means those waters which are south of 60° S. Source: IMO resolution A.1021(26), Guidelines for ships operating in polar waters, 18 January 2010, International Maritime Organization. Regulatory Guidance
Arctic Waters

Arctic Waters

Definition(s)

Arctic waters

Arctic waters means those waters which are located north of a line extending from latitude 58º00΄.0 N, longitude 042º00΄.0 W to latitude 64°37΄.0 N, longitude 035°27΄.0 W and thence by a rhumb line to latitude 67º03΄.9 N, longitude 026º33΄.4 W and thence by a rhumb line to Sørkapp, Jan Mayen and by the southern shore of Jan Mayen to the Island of Bjørnøya and thence by a great circle line from the Island of Bjørnøya to Cap Kanin Nos and thence by the northern shore of the Asian continent eastward to the Bering Strait and thence from the Bering Strait westward to latitude 60º N as far as Il’pyrskiy and following the 60th North parallel eastward as far as and including Etolin Strait and thence by the northern shore of the North American continent as far south as latitude 60º N and thence eastward along parallel of latitude 60º.N, to longitude 56º37΄.1 W and thence to the latitude 58º00΄.0 N, longitude 042º00΄.0 W. Source: IMO resolution A.1021(26), Guidelines for ships operating in polar waters, 18 January 2010, International Maritime Organization. Regulatory Guidance
Hanger Mandrel

Hanger Mandrel

Definition(s)

Hanger Mandrel

Portion of a casing or tubing hanger that is attached by a threaded connection to the tubular string and forms the upper end of that tubular string. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards
Polar Waters

Polar Waters

Definition(s)

Polar Waters

Polar waters includes both Arctic and Antarctic waters. Source: IMO resolution A.1021(26), Guidelines for ships operating in polar waters, 18 January 2010, International Maritime Organization. Regulatory Guidance
Form

Form

Definition(s)

Form

Essential shape of a product including all its component parts. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards Source: API SPEC 14A, Specification for Subsurface Safety Valve Equipment, Eleventh Edition, October 2005 (Reaffirmed June 2012). Global Standards  

Form

The essential shape of a product including its component parts. Source: API SPEC 16C, Specification for Choke and Kill Systems, First Edition, January 1993 (Reaffirmed 2001). Global Standards  

Form

“Form” means form given in the First Schedule. Source: The Petroleum Rules, 1976, India, 1976. Regulations Source: The Petroleum Rules, 2002, India, 13th March 2002. Regulations
Forging, Noun

Forging, Noun

Definition(s)

Forging, (noun)

Shaped metal part formed by the forging method. Source: API Specification 16A, Specification for Drill-through Equipment, Fourth Edition, April 2017. Global Standards Source: API STANDARD 16AR, Standard for Repair and Remanufacture of Drill-through Equipment, First Edition, April 2017. Global Standards Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards Source: API SPEC 16A, Specification for Drill-through Equipment, Third Edition, June 2004 (Errata/Supplement November 2004). Global Standards
Forge, Verb

Forge, Verb

Definition(s)

Forge, Verb

Deform metal plastically into desired shapes with compressive force. NOTE Forging is usually a hot process. The use of dies is optional. Source: API SPEC 6A, Specification for Wellhead and Christmas Tree Equipment, Twentieth Edition, October 2010 (Addendum November 2012). Global Standards  

Forge, Verb

Plastically deform metal, usually hot, into desired shapes with compressive force, with open or closed dies. Source: API SPEC 16A, Specification for Drill-through Equipment, Third Edition, June 2004 (Errata/Supplement November 2004). Global Standards