HPS N13.41-2011

$21.45

Criteria for Performing Multiple Dosimetry

Published By	Publication Date	Number of Pages
HPS	2011	25

Guaranteed Safe Checkout

Category: HPS

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. We’re here to assist you 24/7.
Email:[email protected]

Description

The final decision on whether to use multiple dosimeters for
external dosimetry purposes instead of a strategically placed
single dosimeter is left to the judgment of radiation ANSI/HPS
N13.41-2011 2 protection professionals. Once multiple dosimeter use
has been deemed appropriate, this standard contains criteria
applicable to routine occupational activities on when and how to
use them to monitor the body and extremities of individuals exposed
to external sources of ionizing radiation. Such conditions may be
encountered at medical, research, commercial, weapons disposition,
fuel processing, power reactors and other sites. In addition,
recommendations for selecting dosimeter types, placement of
dosimeters on the body, interpretation of multiple dosimeter
results, and recording of dose information are presented. A program
that is compliant with this standard shall include the requirements
of the standard, but not necessarily its recommendations.

This standard does not address the cases of internal deposition
of radioactive materials, external contamination of the body, or
working conditions that do not permit job pre-planning. Sudden or
unexpected changes in the radiation environment as might occur
during accidents are also beyond the scope of this standard. Fetal
monitoring is not addressed because it represents a special case
not necessarily related to nonuniform irradiation. (Fetal
monitoring is for the purpose of estimating the dose to a separate
entity, the fetus, and demonstrating an appropriate rate of
equivalent dose accumulation for the period of gestation. Since it
is not an example of multiple dosimetry, it is not addressed
herein.¹) Skin exposures where the area of irradiation
is less than 10 cm² (e.g., from a hot particle) are not
addressed.² Finally, the recommendations of this
standard do not supercede specific regulations or license
requirements.

This standard assumes that dosimeter assemblies worn for
multiple dosimetry purposes are calibrated and processed to
provide an estimate of equivalent dose. Specific guidance on
dosimeter processing methodologies, calibrations, and performance
criteria are included only by reference.

¹The dose to the fetus from external sources is often
assessed by mounting a dosimeter on the abdomen of the pregnant
worker.

²The National Council on Radiation Protection and
Measurements, in NCRP Report No. 106, Limit for Exposure to
"Hot Particles" on the Skin, provides guidance on assessing
the radiation exposure of small skin areas (NCRP 1999).

Additional information