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Gilson and Voss - Voss Associates

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INSTRUMENT SELECTION AND USE<br />

Exposure/Absorbed Dose Rates (photon) - Ion Chamber,<br />

Energy Compensated GM, Tissue-Equivalent Plastic<br />

3<br />

Dose Equivalent Rates (neutron) - BF<br />

3<br />

or He moderator,<br />

Neutron-Proton Recoil (Rossi Detector, Liquid Plastic<br />

Scintillator, Plastic/ZnS Scintillator) , LiGdBO3-loaded Plastic<br />

Beta <strong>and</strong> activity - Proportional Counter, GM, Plastic<br />

Scintillator<br />

Alpha activity - Proportional Counter, ZnS Scintillator, Air<br />

Proportional, Solid-state Silicon, Plastic Scintillator<br />

Alpha + beta activity - Proportional Counter, Plastic/ZnS<br />

Scintillator, Plastic Scintillator, Solid-state Silicon<br />

Gross gamma activity - NaI, CsI<br />

X-ray spectroscopy - Si(Li)<br />

Gamma spectroscopy - HPGe, CZT, HgI, CsI, LaBr<br />

Alpha spectroscopy - Frisch Grid, Solid-state Silicon<br />

Beta spectroscopy - BGO, Plastic Scintillator, Silicon<br />

1. Select an instrument appropriate for the isotope(s) to be surveyed<br />

for.<br />

2. Check instrument for a valid calibration sticker <strong>and</strong> for damage that<br />

would prevent it (them) from operating acceptably.<br />

3. Check the battery condition.<br />

4. Perform an operational (or performance) check.<br />

5. Determine the isotope(s) correction factor to be applied to the<br />

instrument.<br />

6. Calculate the instrument’s MDA <strong>and</strong> compare to survey criteria.<br />

7. If the instrument does not meet all of the above criteria, then<br />

replace the instrument (or change/charge the batteries) or change<br />

your survey technique so that the instrument’s MDA will meet the<br />

survey criteria.<br />

9. Perform <strong>and</strong> then document the survey.<br />

Page 66<br />

INSTRUMENT SELECTION AND USE<br />

Exposure/Absorbed Dose Rates (photon) - Ion Chamber,<br />

Energy Compensated GM, Tissue-Equivalent Plastic<br />

3<br />

Dose Equivalent Rates (neutron) - BF<br />

3<br />

or He moderator,<br />

Neutron-Proton Recoil (Rossi Detector, Liquid Plastic<br />

Scintillator, Plastic/ZnS Scintillator) , LiGdBO3-loaded Plastic<br />

Beta <strong>and</strong> activity - Proportional Counter, GM, Plastic<br />

Scintillator<br />

Alpha activity - Proportional Counter, ZnS Scintillator, Air<br />

Proportional, Solid-state Silicon, Plastic Scintillator<br />

Alpha + beta activity - Proportional Counter, Plastic/ZnS<br />

Scintillator, Plastic Scintillator, Solid-state Silicon<br />

Gross gamma activity - NaI, CsI<br />

X-ray spectroscopy - Si(Li)<br />

Gamma spectroscopy - HPGe, CZT, HgI, CsI, LaBr<br />

Alpha spectroscopy - Frisch Grid, Solid-state Silicon<br />

Beta spectroscopy - BGO, Plastic Scintillator, Silicon<br />

1. Select an instrument appropriate for the isotope(s) to be surveyed<br />

for.<br />

2. Check instrument for a valid calibration sticker <strong>and</strong> for damage that<br />

would prevent it (them) from operating acceptably.<br />

3. Check the battery condition.<br />

4. Perform an operational (or performance) check.<br />

5. Determine the isotope(s) correction factor to be applied to the<br />

instrument.<br />

6. Calculate the instrument’s MDA <strong>and</strong> compare to survey criteria.<br />

7. If the instrument does not meet all of the above criteria, then<br />

replace the instrument (or change/charge the batteries) or change<br />

your survey technique so that the instrument’s MDA will meet the<br />

survey criteria.<br />

9. Perform <strong>and</strong> then document the survey.<br />

Page 66<br />

INSTRUMENT SELECTION AND USE<br />

Exposure/Absorbed Dose Rates (photon) - Ion Chamber,<br />

Energy Compensated GM, Tissue-Equivalent Plastic<br />

3<br />

Dose Equivalent Rates (neutron) - BF<br />

3<br />

or He moderator,<br />

Neutron-Proton Recoil (Rossi Detector, Liquid Plastic<br />

Scintillator, Plastic/ZnS Scintillator) , LiGdBO3-loaded Plastic<br />

Beta <strong>and</strong> activity - Proportional Counter, GM, Plastic<br />

Scintillator<br />

Alpha activity - Proportional Counter, ZnS Scintillator, Air<br />

Proportional, Solid-state Silicon, Plastic Scintillator<br />

Alpha + beta activity - Proportional Counter, Plastic/ZnS<br />

Scintillator, Plastic Scintillator, Solid-state Silicon<br />

Gross gamma activity - NaI, CsI<br />

X-ray spectroscopy - Si(Li)<br />

Gamma spectroscopy - HPGe, CZT, HgI, CsI, LaBr<br />

Alpha spectroscopy - Frisch Grid, Solid-state Silicon<br />

Beta spectroscopy - BGO, Plastic Scintillator, Silicon<br />

1. Select an instrument appropriate for the isotope(s) to be surveyed<br />

for.<br />

2. Check instrument for a valid calibration sticker <strong>and</strong> for damage that<br />

would prevent it (them) from operating acceptably.<br />

3. Check the battery condition.<br />

4. Perform an operational (or performance) check.<br />

5. Determine the isotope(s) correction factor to be applied to the<br />

instrument.<br />

6. Calculate the instrument’s MDA <strong>and</strong> compare to survey criteria.<br />

7. If the instrument does not meet all of the above criteria, then<br />

replace the instrument (or change/charge the batteries) or change<br />

your survey technique so that the instrument’s MDA will meet the<br />

survey criteria.<br />

9. Perform <strong>and</strong> then document the survey.<br />

Page 66<br />

INSTRUMENT SELECTION AND USE<br />

Exposure/Absorbed Dose Rates (photon) - Ion Chamber,<br />

Energy Compensated GM, Tissue-Equivalent Plastic<br />

3<br />

Dose Equivalent Rates (neutron) - BF<br />

3<br />

or He moderator,<br />

Neutron-Proton Recoil (Rossi Detector, Liquid Plastic<br />

Scintillator, Plastic/ZnS Scintillator) , LiGdBO3-loaded Plastic<br />

Beta <strong>and</strong> activity - Proportional Counter, GM, Plastic<br />

Scintillator<br />

Alpha activity - Proportional Counter, ZnS Scintillator, Air<br />

Proportional, Solid-state Silicon, Plastic Scintillator<br />

Alpha + beta activity - Proportional Counter, Plastic/ZnS<br />

Scintillator, Plastic Scintillator, Solid-state Silicon<br />

Gross gamma activity - NaI, CsI<br />

X-ray spectroscopy - Si(Li)<br />

Gamma spectroscopy - HPGe, CZT, HgI, CsI, LaBr<br />

Alpha spectroscopy - Frisch Grid, Solid-state Silicon<br />

Beta spectroscopy - BGO, Plastic Scintillator, Silicon<br />

1. Select an instrument appropriate for the isotope(s) to be surveyed<br />

for.<br />

2. Check instrument for a valid calibration sticker <strong>and</strong> for damage that<br />

would prevent it (them) from operating acceptably.<br />

3. Check the battery condition.<br />

4. Perform an operational (or performance) check.<br />

5. Determine the isotope(s) correction factor to be applied to the<br />

instrument.<br />

6. Calculate the instrument’s MDA <strong>and</strong> compare to survey criteria.<br />

7. If the instrument does not meet all of the above criteria, then<br />

replace the instrument (or change/charge the batteries) or change<br />

your survey technique so that the instrument’s MDA will meet the<br />

survey criteria.<br />

9. Perform <strong>and</strong> then document the survey.<br />

Page 66

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