Equipment certification Equipment certification shall be approved by a Recognized Technical Authority. Other personnel All other personnel performing measurements, inspections or tests for acceptance shall be qualified in accordance with the manufacturer's Q1 QMS documented procedures and requirements for competence. Quality control requirements for equipment and parts General All pressure-containing and pressure-controlling parts exposed to wellbore fluid shall be in conformance with the requirements of NACE MR0175, ISO 15156 (all parts). Material requirements Material used for pressure-containing parts or members shall comply with API-16A. Closure Bolting Closure bolting shall conform to, or exceed, the manufacturer's written specification and API-16A standard revision under which originally built. The manufacturer shall retain records for closure bolting, as required. Low-Alloy steel studs and nuts shall be in conformance with API-6A and API-20E, BSL-2 specifications. Materials and consumables shall be fully traceable. Studs and nuts other than closure bolting Studs and nuts shall conform to the requirements of API-6A. Low-Alloy steel studs and nuts shall be in conformance with API-6A and API-20E, BSL-2 specifications. Materials and consumables shall be fully traceable. Bolting environment Bolting selection for surface and subsea pressure control equipment shall consider the maximum hardness requirements, in relation to the operational environment and selected corrosion protection system in order to prevent hydrogen embrittlement. Quality control instructions All quality control work shall be controlled by the manufacturer's documented instructions, which includes an appropriate Inspection Test Plan (ITP) or other methodology that provides an auditable tracking document with quantitative and qualitative acceptance criteria.
Forgings and wrought products may be tested in the longitudinal direction instead of the transverse direction, in which case they shall exhibit 27 J (20 ft-lb) minimum average value. For equipment rated for 20,000 psi and higher pressure , the Charpy V –notch impact values shall be in accordance with the class T-HP or table 23 or 68J (50ft-lb) minimum average in the longitudinal direction Table 5 — Acceptance criteria for Charpy V-notch impact tests rating Test temperature Minimum impact value required for average of each set of three specimens Minimum impact value permitted for one specimen only per set °C (°F) J (ft-lb) J (ft-lb) T-0, 18 0 20 15 14 10 T-20 T350 29 20 20 15 14 10 T-75 59 75 20 15 14 10 T-HP -29 -20 41 30 33 24 Rated pressure can be de-rated for elevated temperature service over 250 degrees F per annex G of API-6A. Qualification test coupons (QTC) General In remanufacturing the QTC used for reestablishing the material properties is removed from the part requiring weld repair. A QTC may be from an equal size part from the same heat number as the part requiring weld repair to represent the impact and/or tensile properties, provided it satisfies the requirements of this standard. The properties exhibited by the QTC shall represent the properties of the material comprising the equipment it qualifies. When the QTC is a trepanned core or a prolongation removed from a production part, the QTC only qualify parts having the same or smaller equivalent round (ER). A QTC may only qualify material and parts produced from the same heat. Equivalent round (ER) General The dimensions of a QTC for a part shall be determined using the following ER method. ER methods Annex-I illustrates the basic models for determining the ER of simple solid and hollowed parts and more complicated equipment. The ER of a part shall be determined using the actual dimensions of the part in the “as-heat-treated” condition.