RPR-50

ALI fraction

Annual limit on intake.

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GoverningALI fraction

Governing equation

f=I/\\mathrm{ALI}

where

I: I (Bq)
ALI: ALI (Bq)
f: ALI fraction (—)

Lecture brief

Historical brief

Inverse-square, half-value layer, ICRP weighting and ALARA are the protection craft since the 1920s commissions. The lab computes transmission, equivalent dose and a shielding snapshot. This sheet (RPR-50 — ALI fraction) is the form associated with ALI fraction. Working symbols: $I$ , $ALI$ $\rightarrow$ $f$ . Annual limit on intake. Pedagogical SI sheet with a live model and a swept parameter.

Purpose

Purpose: compute

f

from

I

ALI

in Radiation protection via

f=I/\\mathrm{ALI}

Annual limit on intake. Use it when a real radiation protection question must be answered in SI before a code check.

Live realistic example

In symbols

Live case. Given

I = 20000.000\,\mathrm{Bq}

ALI = 100000.000\,\mathrm{Bq}

, the governing relation

f=I/\\mathrm{ALI}

yields

f = 0.200\,\mathrm{—}

. One governing identity, SI units, a single sweep on the sheet. Move a slider: the numbers are this situation, not a canned story.

Calculator

Inputs

I I20000 BqALI ALI100000 Bq

Outputs

ALI fraction f0.200 —

Reading speed

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Narration of this film

One governing identity, SI units, a single sweep on the sheet.

Annual limit on intake. Pedagogical SI sheet with a live model and a swept parameter.

Reading speed

Watch on YouTube