API Spec 16F:2004 pdf download
API Spec 16F:2004 pdf download.Specification for Marine Drilling Riser Equipment.
3.48 mud boost line: An auxiliary line which provides supplementary fluid supply from the surface and injects it into the
riser at the LMRP to assist in the circulation of drill cuttings up the marine riser, when required.
3.49 nominal stress: Stress calculated using the nominal pipe wall dimensions of the riser at the location of concern.
3.50 pin: The male member of a riser coupling or a choke, kill, or auxiliary line stab assenibly.
3.51 preload: Compressive bearing load developed between box and pin menibers at their interface. This is accomplished by elastic deformation during makeup of the coupling.
3.52 pressure-containing component: A component whose failure to function as intended would cause a release of pressurized fluid to the environment.
3.53 primary-load-carrying component: Component whose failure would compromise the structural integrity of the marine drilling riser system. Examples are components that carry all or a major part of the tension in the riser.
3.54 protector, box or pin: A cap or cover used to protect the box or pin from damage during storage and handling.
3.55 pup joint: A shorter-than-standard-length riserjoint.
3.56 rated load: A nominal applied loading condition used (luring riser design. analysis and testing based on maximum anticipated service loading.
3.57 rated working pressure: The maximum internal pressure equipment is designed to contain and/or control. Working pressure is not to be confused with test pressure.
3.58 riser adapter: Crossover between riser and flex/ball joint.
3.59 riser annulus: The space around the pipe (drill pipe, casing or tubing) suspended in a riser: its outer boundary is the internal surface of the riser pipe.
3.60 riser connector (LMRP connector): A hydraulically operated connector that joins the LMRP to the top of the BOP Stack.
3.61 riser disconnect: The operation of unlatching of the riser connector to separate the riser and LMRP for the HOP Stack.
3.62 riser joint: A section of riser main tube having ends fitted with a box and pin and including choke, kill and (optional) auxiliary lines and their support brackets.
3.63 riser recoil system: A means of limiting the upward acceleration of the riser when a disconnect is made at the riser connector.
3.64 riser spider: A device having retractable jaws or dogs used to support the string on the uppermost coupling support shoulder during deployment and retrieval of the riser.
3.65 riser string: A deployed assembly of riser joints.
3.66 riser support shoulder: See 3.39.
3.67 riser tensioner: Means for providing and maintaining top tension on the deployed riser string to prevent buckling.
3.68 riser tensioner ring: The structural interface of the telescopic joint outer barrel and the riser tensioners.
3.69 RKB (Rotary Kelly Bushing): Commonly used vertical reference for the drill floor.
3.70 running tool: See 3.29.
3.71 SAF: See 3.74.
3.72 slip joint: See 3.81.
3.73 stab: A mating box and pin assembly that provides pressure-tight engagement of two pipe joints. An external mechanism is usually used to keep the box and pin engaged. For example, riser joint choke and kill stabs are retained in the stab mode by the make-up of the riser coupling.
3.74 Stress Amplification Factor (SAF): Equal to the local peak alternating stress in a component (including welds) divided by the nominal alternating stress in the pipe wall at the location of the component. The factor is used to account for the increase in the stresses caused by geometric stress amplifiers that occur in riser components.
3.75 submerged weight: See 3.86.
3.76 subsea fill-up valve: A special riser joint having a valve means to allow the riser annulus to be opened to (lie sea. To prevent riser pipe collapse. an automatic actuator controlled by a differential-pressure sensor may open the valve.
3.77 support brackets: Brackets positioned at intervals along the riser joint that provide intermediate radial and lateral support from the riser main tube to the choke, kill and auxiliary lines.
3.78 surge: Vessel motion along the fore/aft axis.
3.79 sway: Vessel motion along the port/starboard axis.
3.80 syntactic foam: Typically a composite material of hollow spherical tillers in a matrix or binder.
3.81 telescopic joint (slip joint): A riser joint having an inner barrel and an outer barrel with sealing means between. The inner and outer balTels of the telescopic joint move relative to each other to compensate for the required change in the length of the riser string as the vessel moves.
3.82 telescopic joint packer: The means of sealing the annular space between the inner and outer barrels of the telescopic joint.
3.83 terminal fitting: The connection between a rigid choke, kill, or auxiliary line on a telescopic joint and its drape hose, affecting a nominal 180-degree turn in flow direction.
3.84 thrust collar: A device for transmitting the buoyancy force of a buoyancy module to the riserjoint.
3.85 type certification testing: Testing by a manufacturer of a representative specimen (or prototype) of a product which qualifies the design and. therefore, validates the integrity of other products of the same design, materials and manufacture.
