Process piping in refineries, plants and terminals to ASME B31.3: fluid service category (300.2), allowable stress from Table A-1M, pressure design of straight pipe (304.1), and the hydrostatic, pneumatic or initial service leak test (345)
New here? Read the User Manual — the equation, the stress table, the test rules and the limits.
◉ ASME B31.3-2016 · 300.2, 304.1, 345, TABLE A-1M · UPGRADE DUE: B31.3-2024 · NOT A REGULATORY SUBMISSION TOOL
⚠ Edition. Built on ASME B31.3-2016, the text on file. B31.3-2024 is current and has not been compared: the tool will be upgraded when that text is available. The allowable stresses are those of the 2016 Table A-1M; check them against the edition your project is built to, as Appendix A values change between editions. The stress table covers eleven common carbon and austenitic stainless pipe materials up to 450 °C (carbon) and 400 °C (stainless), below the creep range, where Y = 0.4 and W = 1.0. Indicative tool.
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Identification
Records are kept in SI. Pressures are gauge.
Summary
Enter the design conditions and the pipe.
1. Fluid Service and Design Conditions (300.2, 301)
2. Pipe and Pressure Design (304.1, Table A-1M)
3. Leak Test (345)
4. Measured Thickness Against the Required Thickness (optional)
B31.3 is a construction code. This section only compares a measured thickness with the minimum required thickness tm worked out above and divides the margin by your corrosion rate. Inspection intervals and in-service rules are in API 570, which is not on file.