ASME SA-376 pdf free download

ASME SA-376-SA-376M-2021 pdf free download.SPECIFICATION FOR SEAMLESS AUSTENITIC STEEL PIPE FOR HIGH-TEMPERATURE CENTRAL-STATION SERVICE.
9. Tensile Requirements
9.1 The material shall conform to the requirements as to tensile properties prescribed in Table 2.
10. Workmanship. Finish, and Appearance
10.1 The pipe manufacturer shall explore a sufficicnt number of visual surface imperfections to provide reasonable assurance thai they have been properly evaluated with respect to depth. Exploration of all surface imperfections is not required hut may be necessary to assure compliance with 10.2.
10.2 Surface imperfections that penetrate more than I 24% of the nominal wall thickness or encroach oti the minimum wall thickness shall be considered defects. Pipe with such defects shall be given one of the following dispositions:
10.2.1 The defect may be removed by grinding provided that the remaining wall thickness is within specified limits.
10.2.2 Repaired in accordance with the repair welding provisions of 10.6.
10.2.3 The section of pipe containing the defect may be cut off within the limits of requirements on length.
10.2.4 Rejected.
10.3 To provide a workmanlike finish and basis for evaluating conformance with 10.2. the pipe manufacturer shall remove by grinding the following:
10.3.1 Mechanical marks, abrasions (see Note 3). and pits. any of which imperfections are deeper than , in. [1.6 rnml.
NOTE 3 — Marks and abrasions are ikhnett as cable marks, dines, guide marks, roll marks, ball scraicbes. scares, die marks. and so tarth.
10.3.2 Visual imperfections commonly referred to as scabs, seams, laps. tears, or slivers found by exploration in accordance with 10.1 to be deeper than 5% of the nominal wall thickness.
10.4 At the purchaser’s discretion, pipe shall be subject to rejection if surface imperfections acceptable under 10.2 are not scattered, but appear over a large area in excess of what is considered a workmanlike finish, Disposition of such pipe shall be a matter of agreement between the manufacturer and the purchaser.
10.5 When imperfections or defects are removed by grinding, a smooth curved surface shall be maintained. and the wall thickness shall not be decreased below that permitted by this specification. The outside diameter at the point of grinding may be reduced by the amount so removed.
10.5.1 Wall thickness measurements shall be made with a mechanical caliper or with a properly calibrated
nondestructive testing device of appropriate accuracy. In case of dispute, ihe measurement determined by use of the mechanical caliper shall govern.
IOu Weld repair shall he pennined only subject to the approval of the purchaser and in accordance with Specification A 999/A 999M.
10.7 The finished pipe shall be reasonably straight.
10.8 The pipe shall be free of scale and contaminating iron particles. Pickling. blasting. or surface finishing is not mandatory when pipe is bright annealed. The purchaser may request that a passivating treatment be applied.
11. H’edrostatic or Nondestructiie Electric Test
11.1 Each pipe shall be subjected to the Nondestructive Electric Test or the Hydrostatic Test. Unless specified by the purchaser, either test may be used at the option of the producer.
11.2 Hydrostatic Test — Each lcngth of finished pipe shall he subjected to the hydrostatic tCst in accordance with Specification A 999/A 999M. unless specifically exempted under the provisions of 11.3 and 11.4.
11.3 For pipe sizes NPS 24 and over, the purchaser, with the agreement of the manufacturer. may complete the hydrostatic test requirement with the system pressure test. which may be lower or higher than the specification test pressurc. but in no case shall the test pressure be lower than the system design pressure. Each length of pipe furnished without the completed manufacturer’s hydrostatic test shall include with the mandatory marking the lellers “NH”.ASME SA-376 pdf download.