CIP Spray Device Flow Sizing Calculator (ASME BPE) — Sample Report

1 · Design inputs

Vertical vessel, 3 ft diameter, static spray ball with the default 2.5–3.0 gpm/ft band.

2 · Method

Vertical vessel: L_c = π·D (inner circumference)

Horizontal vessel: L_c = 2·L + 2·D (projected perimeter)

Q = coverage rate × L_c

Dimensions may be entered in feet, inches or metres; the calculator converts to feet internally because the coverage coefficients are gpm per foot. It then resolves the coverage band: with no override, the BPE-aligned default for the device type and orientation applies, per the guidance of SD-3.9.2.1–.3 — static devices 2.5–3.0 gpm/ft on a vertical vessel and 2.0–3.0 horizontal, single-axis rotary 1.9–2.3 vertical and 1.4–2.1 horizontal, multi-axis rotary 1.3–1.5 vertical and 0.8–1.2 horizontal. Entering a manufacturer's rate collapses the band to a point value and the report flags the override. Multiplying the band limits by L_c gives the required flow band in gpm, converted alongside to L/min. The result is a sizing band, not a verdict — status is n/a by design, and the selected device's datasheet flow at supply pressure has to land inside it. If only one override value is supplied, the calculator applies it as both ends of the band rather than mixing a user rate with a default.

3 · Calculation

1. Wetted circumference: L_c = π·3 = 9.4248 ft.
2. Minimum flow: 2.5 · 9.4248 = 23.56 gpm (89.2 L/min).
3. Maximum flow: 3.0 · 9.4248 = 28.27 gpm (107.0 L/min).

4 · Results COMPUTED

5 · Verification statement

The result values above are locked as fixture spray-flow.json, case “vertical D=3 ft, static default band 2.5-3.0”, 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 BPE — SD-3.9.2, spray device coverage practice for cleanability.