Thermal Relief Designer: Terms of Use Addendum

A1. What the App does

Preliminary sizing of thermal-expansion relief for blocked-in liquid piping: relief rates, set pressures, orifice sizes, valve-type suggestions, design-pressure checks and cascade arrangements, with PDF reports.

A2. Limits of the outputs (adds to base §7)

Thermal relief and overpressure protection are safety-critical. Outputs are preliminary estimates from simplified models, standard correlations (API 520 Parts I and II, API 521, API 526; ASME B36.10M, B16.5, B31.3) and your inputs. Tabulated standard values are a verified subset and may not reflect the latest code edition. The App is not a substitute for a professional-engineer-stamped, code-compliant overpressure protection study. Every set pressure, valve and check-valve selection, pipe and flange rating and cascade must be independently reviewed and approved by a licensed professional engineer and reconciled with the governing codes, manufacturers' data and the facility's process-safety procedures (including OSHA PSM, 29 CFR 1910.119, where applicable).

A3. Who may use it (adds to base §2)

Competent professional users only.

A4. Fluid properties

Representative values from published literature and handbooks; they vary with composition and temperature and must be confirmed for the actual service.

A5. Changes to base sections

None. (v1.1 moved governing law from South Carolina to North Carolina; the base now carries it.)