SAMPLE
Piping Toolset — Calculation Report
generated by calc-core · 2026-07-21
ProjectSample Project — Demonstration Only Job No.SAMPLE-001 Client—
CalculationHydrostatic / Pneumatic Leak Test Pressure Calculator (ASME B31.3) Calc byPiping Toolset (calc-core) Checked byUNCHECKED — sample
Date2026-07-21 Rev0 BasisASME B31.3 ¶345.4.2 Eq. (24) / ¶345.5.4; B31.1 ¶137.4.5 via factors

1 · Design inputs

Design pressure 300 psi; allowable stress 20,000 psi at ambient test temperature and 17,500 psi at design temperature; B31.3 factors.

Design pressure P300psi
ST at test temperature20,000psi
S at design temperature17,500psi
Hydro factor1.5—
Pneumatic factor1.1—

2 · Method

Phydro = 1.5 · P · (ST / S)   (ST/S capped, default 6.5)

Ppneumatic = 1.1 · P

where ST is the allowable stress at test (ambient) temperature and S at design temperature. The 1.5 hydro factor, 1.1 pneumatic factor, and the stress-ratio cap are inputs so the same card serves B31.1 (¶137.4.5: 1.5×, no ratio) and other sections.

3 · Calculation

  1. Stress ratio: ST/S = 20,000 / 17,500 = 1.14286 (under the 6.5 cap).
  2. Hydro test: 1.5 · 300 · 1.14286 = 514.3 psi.
  3. Pneumatic alternative: 1.1 · 300 = 330 psi.

4 · Results COMPUTED

Stress ratio ST/S1.14286—
Hydrostatic test pressure514.3psi
Pneumatic test pressure330psi

5 · Verification statement

The result values above are locked as fixture leak-test-pressure.json, case “P=300, ST/S=20000/17500, B31.3 factors”, tolerance 0.001, in the calc-core continuous verification gate (see https://pipingtoolset.com/trust/validation.html). Allowable-stress and factor data are user-supplied inputs; citations: ASME B31.3, Process Piping — ¶345.4.2 Eq. (24) hydrostatic test; ¶345.5.4 pneumatic test. · ASME B31.1, Power Piping — ¶137.4.5 (same card with factor 1.5 and ratio 1.0).

SAMPLE REPORT — auto-generated from a verification fixture to show the report format. Not a project calculation. ⚠ Engineering-aid tool. Public code equations; allowable-stress and factor data are user-supplied. Results MUST be independently verified and reviewed by a qualified/licensed engineer before any design, fabrication, or operation decision.