API SPEC 14A:2005 pdf download

API SPEC 14A:2005 pdf download.Specification for Subsurface Safety Valve Equipment.
5.4.2 SSCSVs
The conditions under which the SSCSV will operate (flow conditions) and the conditions under which the valve should close (see ISO 10417) shall be specified, such as
a) at valve setting depth, the minimum, maximum and normal values of the productioniinection pressures and temperatures at the anticipated flow rates:
b) composition of the production fluid (gas/oil/water) and density of each component.
5.5 Environmental compatibility
The following shall be identified for the SSSV to ensure environmental compatibility;
a) production/injection/annulus ftu,d chemical and physical composition, including solids (sand production. scale, etc.), to which the SSSV is exposed during its full life cycle;
b) in cases where the user/purchaser has access to corrosion-property historical data and/or research which is applicable to the functional specification, the user/purchaser should state to the manufacturer which material(s) has the ability to perform as required within a similar corrosion environment.
5.6 Compatibility with related well equipment
The following infomiation, as applicable, shall additionally be specified to ensure the compatiblllty of the SSSV with the related well equipment:
a) SSSV size, type, material, the configuration of the interface connections (these connections are not included in the evaluation of combined loading);
b) internal receptacle profile(s), sealing bore dimension(s), outside diameter, inside diameter and their respective locations;
C) requirement(s) for passage of conduits (electricatihydraulic) between valve OD and casing ID.
6 Technical specification
6.1 Technical requirements
The supplierlmanufacturer shall prepare and provide to the user/purchaser the technical specification that responds to the requirements defined in the functional specification.
6.2 Technical characteristics of SSSV
The following cnteria shall be met:
a) the SSSV shall be located and/or seal at the specified location and remain so until intentional intervention defines otherwise:
b) whale installed, the SSSV shall perform in accordance with the functional specification;
c) where applicable, the SSSV shall not compromise well-intervention operations as specified in 5.4;
d) while in service, the SSSV shall meet the requirements of the functional specification.
6.3Design criteria
6.3.1General
sssv design shall permit prediction and repeatability of rates,pressures or other conditions required forclosure.
6.3.2 Design requirements
6.3.2.1 Documentation of designs shall include methods,assumptions，calculations and designrequirements. Design requirements shall include but not be limited to those criteria for size, test, working andoperating pressures, materials,environment (temperature limits, service class, chemicals) and other pertinentrequirements upon which the design is based. Design documentation shall be reviewed and verified by aqualified individual other than the individual who created the original design.
6.3.2.2sssv equipment conforming to this International Standard shall be manufactured to drawingsand specifications that are substantially the same as those of the size,type, and model SSsv equipment thathas passed the validation test.