1、 Date of Issue: March 2015 Affected Publication: API Specification 6D, Specification for Pipeline and Piping Valves, Twenty-fourth Edition, August 2014 ADDENDUM 1 Page 4, 3.1 Terms and Definitions, replace two definitions: 3.1.1 assembler/manufacturer An organization that performs assembly as define
2、d in 3.1.2 and conforms to the requirements of Section 14. NOTE The terms assembler and manufacturer are used interchangeably throughout this document and are considered to be equivalent. 3.1.2 assembly The association of multiple parts/components into a finished product, including as a minimum, ins
3、tallation of all pressure-containing parts and pressure-controlling parts needed to ensure conformance to applicable pressure testing requirements. Page 16, 5.9 Drains and Table 2, revise to read: 5.9 Drains Drain connections shall be drilled and threaded. The purchaser may specify other types of dr
4、ain connections, such as welded or flanged. CautionThreaded connections can be susceptible to crevice corrosion. Tapered threads shall be capable of providing a seal and comply with ASME B1.20.1. If parallel threads are used, the connection shall have a head section for trapping and retaining a seal
5、ing member suitable for the specified valve service. Parallel threads shall comply with ASME B1.20.1 or ISO 228-1. Sizes shall be in accordance with Table 2. Table 2Pipe Thread/Pipe Sizes for Drains Nominal Size of ValveMinimum Pipe Thread/Pipe Size in. (mm) NPS DN 1/2 to 1-1/2 15 to 40 1/4 (8) 2 to
6、 8 50 to 200 1/2 (15) 8 200 1 (25) Page 23, 6.10 Heat-treating Equipment Qualification, revise to read: 6.10 Heat-treating Equipment Qualification Heat treating of pressure-containing and pressure-controlling parts and associated TCs shall be performed with “production-type” equipment conforming to
7、requirements specified by the manufacturer. “Production-type” heat-treating equipment shall be recognized as equipment that is routinely used to process production parts. All heat treatment for mechanical properties shall be performed using furnaces that are calibrated in conformance with Annex F. P
8、ost-weld heat treatment (PWHT) shall be performed with heat-treat equipment conforming to requirements specified by the manufacturer. Furnaces shall be calibrated and surveyed per 8.2.5. Page 26, 8.1 NDE Requirements, revise to read: 8.1 NDE Requirements NDE requirements shall conform to Annex G whe
9、n specified by the purchaser. Additionally, final surface (MT and PT) and ultrasonic (UT) NDE activities shall be conducted after final heat treatment or post-weld heat treatment. Final radiography (RT) NDE activities shall be conducted after final heat treatment, unless otherwise agreed. (delete last paragraph) Page 32, 11 Marking, delete the following paragraph: The nameplate minimum letter size shall be 0.125 in. (3 mm) on valves sizes NPS 2 (DN 50) and larger. For all valves NPS 1.5 in (DN 38) and smaller, the nameplate letter size shall be per the manufacturers standard.
