RPR-46

Occupancy-weighted

NCRP occupancy.

Reading speed

GoverningOccupancy-weighted

Governing equation

H=H_{raw} T

$T \in \left[0.05, 1\right]$

where

Hraw: Hraw (mSv/y)
T: T (—)
H: Occupancy-weighted (mSv/y)

The figure, part by part

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①

Governing law — red

H=H_{raw} T

$T \in \left[0.05, 1\right]$

$T = 0.05$ $H = 0.2$

Along the curve

②

Domain of the variable — blue

T_{\min} = 0.05,\quad T_{\max} = 1

$T \in \left[0.05, 1\right]$

$T = 0.05$ $T = 0.05$

Along the curve

③

Response curve — green

H=H_{raw} T

$T \in \left[0.05, 1\right]$

$T = 0.05$ $H = 0.2$

Along the curve

④

Rate of change — amber

\frac{\mathrm{d}H}{\mathrm{d}T}

$T \in \left[0.05, 1\right]$

$T = 0.056$ $H^{\prime} = 4$

Along the curve

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-46 — Occupancy-weighted) is the form associated with Occupancy-weighted. Working symbols: $Hraw$ , $T$ $\rightarrow$ $H$ . NCRP occupancy. Pedagogical SI sheet with a live model and a swept parameter.

Purpose

Purpose: compute

H

from

Hraw

T

in Radiation protection via

H=H_{raw} T

NCRP occupancy. 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

Hraw = 4.000\,\mathrm{mSv/y}

T = 0.250\,\mathrm{—}

, the governing relation

H=H_{raw} T

yields

H = 1.000\,\mathrm{mSv/y}

. 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

Hraw Hraw4 mSv/yT T0.25 —

Outputs

Occupancy-weighted H1.000 mSv/y

Reading speed

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Narration of this film

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

NCRP occupancy. Pedagogical SI sheet with a live model and a swept parameter.

Reading speed

Watch on YouTube