H. Instrumentation

2. Portable Survey Meters

The PH must have a portable survey meter in his/her possession if the permit experimental limits exceed those listed below. It is sometimes permissible for more than one PH to share a common instrument; however, assurances must be made to the RSO that such an arrangement is practical and will not result in failure to perform adequate surveys.

Type of Radiation

Energy

Example

Experimental Limit

Requiring a Meter

Type of Detector

Beta Emitter

< 50 keV

3H

NA

NA

Beta Emitter

50 keV to 300 keV

14C, 35S, 33P

1 mCi or more

Pancake or End Window GM, or

Beta Scintillator

Beta Emitter

> 300 keV

36Cl, 32P

Any

Pancake or End Window GM,or

Beta Scintillator

X/Gamma Emitter

< 100 keV

125I

1 mCi or more

~2 mm NaI

X/Gamma Emitter

> 100 keV

111In, 51Cr, 22Na

Any

~2.5 cm NaI, or End or side window GM

Consultation with the RSO is advisable prior to the purchase of any survey instrument. All survey instruments are calibrated by the RSO initially, annually, and after repair. To assure such calibrations are performed, each PH should notify the RSO when new survey instruments are purchased or when existing instruments are repaired. The PH is responsible for all repairs and replacing dead batteries.

Home

 Manual Calendar Forms News
 

This page last modified on Monday April 04, 2005
Indiana University | Purdue University
 Any questions or comments regarding this site should be directed to radsafe@iupui.edu