Fluke Biomedical 943-27 Detector User Manual
Page 16
943-27 Beta Scintillation Detector
Operator Manual
4-2
Source and Source Holder Description
WARNING
USE PRECAUTIONS FOR HANDLING
RADIOACTIVE MATERIAL SOURCES
WARNING
HANDLE WITH CAUTION
WARNING
”HIGH BETA RADIATION FIELDS”
Handle the sources with caution.
Direct the open end of the source holder away from personnel.
DO NOT Look at the Open Source.
Wear safety glasses.
DO NOT touch the source window.
DO NOT remove the large end of the holder. It contains the source.
Table 4-1. Current Mode Beta Detector Calibration Source Set
Part Number:
Isotope:
Activity, microCuries
844-130-1-12
90
Sr
200
844-130-1-13
137
Cs
200
844-130-1-14
36
Cl
200
Refer to figure 4-1 for a pictorial view of the source holder assembly. The source holder
consists of the following components:
Shielding: The source is housed in an Aluminum cylinder, 2.5-inch diameter x 4.5-
inch length. The source is sealed in one end of the cylinder. Refer to drawing844-
131-1-TAB, included in Appendix A.
CAUTION
The activity of the sources are a nominal 200
microCuries. The cesium source holder has no lead
shielding and readings on the surface of the holder are
approximately 25 mR/hr (0.25 mGy/hr). Consult the
local Health Physicist for precautions that must be
followed when handling the sources.