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Individual dose monitoring

Individual dose Hp(10)

One person, one monitoring period. Enter final Hp(10) components.

Ready doses

Total Hp(10)— mSv

Calculated automatically. If a component is zero, enter 0.

Person and dosimeter (optional)
Paste from spreadsheet

Columns, without a header: name; dosimeter number; then the active channel readings. Use tabs or semicolons.

Calculation method

Ready doses

Hp(10) = Hγ + Hn

Enter final gamma and neutron Hp(10) components for one person and one period, with background and calibration already accounted for.

This sum does not determine measurement uncertainty or effective dose E. Do not mix Hp(10) with H*(10), absorbed dose or dose rate.

Laboratory: D1–D4

Hγ = (D1 + D2) / 2; Hn = max(0, k · ((D3 + D4) / 2 − Hγ)); Hp(10) = Hγ + Hn

D1 and D2: gamma-calibrated ⁷LiF readings; D3 and D4: gamma-calibrated ⁶LiF readings. Raw light output is not a dose input.

Manufacturer model: Δγ = aγ + 100b/Hγ, Δn = an + 100b/Hn. Defaults 15%, 25% and 0.01 mSv describe the documented equipment, not every dosimeter.

ΔΣ,bounds = Σ(HᵢΔᵢ) / ΣHᵢ; ΔΣ,independent = √Σ(HᵢΔᵢ)² / ΣHᵢ; E = F·Hγ + kn·kangle·Hn

Passport error bounds are not U95. Quadrature requires independent contributions with the same coverage basis, justified by your method.

Calculations and drafts stay in this browser. Export includes the input data and calculation settings.

Total individual dose Hp(10)

Inputs and scope

The main mode sums final gamma and neutron Hp(10) components for one person and one period. Background and calibration must already be accounted for. Instrument corrections, ranges and error models are not reapplied to these final doses. D1–D4 processing, background subtraction and E estimation belong to the separate laboratory mode.

Enter dose-calibrated readings: D1/D2 are ⁷LiF, D3/D4 are ⁶LiF. The coefficient k must come from the calibration for the workplace neutron spectrum; 3.39 is only a worksheet example. Drafts, including names and readings, are stored locally in this browser and are not sent to the calculator server.

Error and uncertainty

The formulas 15 + 1/H and 25 + 1/H, with H in mSv, describe manufacturer basic-error limits for the documented equipment. They do not establish laboratory U95. Error evaluation is off by default. Absolute bounds are added linearly; quadrature is a conditional model requiring independent contributions and a common coverage basis under the stated method. Correlations require a separate budget. No error estimate is shown after background subtraction, channel clipping or outside the configured range.

Effective dose and annual totals

Optional E = F·Hγ + kn·kangle·Hn requires justified factors; its uncertainty is not calculated. MU 2.6.5.028-2016 §6.3.3 refers to particular spectral and geometric conditions, not simply any neutron contribution above 50%. The background input is the photon background for the same monitoring period; Annex 5 conditions apply.

Sum one quantity for one person over non-overlapping periods. Hp(10) is not automatically compared with E limits. For supplied E, the reference NRB-99/2009 group-A scheme is 20 mSv averaged over five consecutive years, 50 mSv in a single year and 100 mSv over five years. This is not a compliance conclusion.

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