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Loading Rack Sizing Calculator

Truck / Rail / Marine — NFPA 30 §28 + 40 CFR 60 Subpart XX

Size a tanker-truck, railcar, or marine loading rack — compute bay count, arm flow, pump duty, VOC emissions, and NSPS Subpart XX / Title V triggers. Defaults preset for each mode; override per facility.

Mode & Throughput

bbl/yr
bbl
min
hr
d/yr

Liquid & Equipment

psia
lb/gal
psi
%

Method

Arm flow:

Q (gpm) = load_size · 42 / load_time

Bays required:

bays = ⌈ annual_bbl / (loads/day · bbl · days/yr) ⌉

VOC (controlled):

VOCctrl = EF · throughput1k bbl · (1 − capture)