API SPEC 11AX:2006 pdf download

API SPEC 11AX:2006 pdf download.Specification for Subsurface Sucker Rod Pumps and Fittings.
Note: Metallic materials for subsurface sucker rod pumps for hydrogen sultide environments are listed in NACE MR-OI-76.
3.3 In addition to the pump designation described in 3.2, the purchaser must provide the following additional information:
a. Barrel material.
b. Plunger material.
c. Plunger clearance (fit).
d. Valve material.
e. Fittings materials.
4 Design Control
4.1 GENERAL
4.1.1 Sucker rod pumps shall be identified per Section 3 and assembled in accordance with Section 5.
4.1.2 Component parts designed and manufactured in accordance with this specification shall comply with the dimensions given in Section 6 and be constructed of materials listed in Section 9.
4.1.3 The following applies to all specified limits in this standard: For purposes of determining conformance with this specification, an observed value or a calculated value shall be rounded “to the nearest unit1’ in the last right-hand digit used in expressing the specification limit.
4.2 DESIGN DOCUMENTATION
4.2.1 Documentation shall include drawings, specifications, procedures, and, if applicable. assumptions, methods. formulae. calculations and test results.
4.2.2 Requirements and acceptance criteria shall be documented.
4.2.3 The method used to determine stroke length for pump assemblies shall be documented.
4.2.4 Documentation shall he prepared on a medium that is legible, reproducible, and retrievable.
4.3 DESIGN VERIFICATION
Verification shall consist of assuring that design conforms to requirements of this specification.
4.4 DESIGN REVIEW
Documentation shall he reviewed and verified by a qualified individual(s) other than the individual(s) who developed the original design, if such additional qualified individual(s) are employed by the manufacturer.
4.5 DESIGN CHANGES
Changes shall be identified, documented, reviewed, and approved by authorized personnel.
5 Pump Assemblies
5.1 Sucker rod PUH1I) assemblies shall be furnished as per the line-ups in this section using component parts defined in Section 6.
5.2 Metal plunger pumps are equipped with the following basic components from Section 6.
a. Valve rod or pull tube (insert pump only).
b. One piece or assembled metal plungers of basic diameter, less clearance.
c. Valves.
d. Heavy-wall or thin-wall barrels.
e. Seating assemblies.
1. Cup type assemblies with “plus 30” cups 10.030 in. (0.76 mm) larger than ID of seating nipple] for rod pumps, and “plus
10” cups [0.010 in. (0.25 mm) larger than ID of seating nipple] for tubing pumps. The letter “C” is to he used in the pump designation, as described in Section 3.
2. Mechanical seating assemblies may he furnished when so specified, in which case the letter “M” is used in the pump designation in lieu of the letter “C”. See part numbers S21 and S22 for details of the mechanical seating assemblies.
5.3 The design and construction of packing for soft-packed plungers has not been standardized. Specit’ size, type, and number of packing elements, according to the manufacturer’s catalog.
5.4 Pump assemblies as described in this section shall be assembled and functionally tested per Section 7.
5.5 Marking of pump assemblies shall he per Section 8. However, when API monogrammed assemblies are specified, marking shall be per Appendix A.