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Model 3430
A-11
SOURCE ENCAPSULATION
The source in the Model 3430 gauge meets regulatory requirements
of U.S. and international authorities as “Special Form” sealed
source material. The sources are encapsulated to prevent leakage of
radioactive material and meet radiation safety requirements.
The neutron source (americium-241:beryllium in the Model 3430 or
californium-252 in the Model 3430-M) is compressed and then
welded inside stainless steel capsules.
The photon (gamma) source (cesium-137) is sealed in a welded
capsule.
Proper use of this instrument (following the instructions in this
manual) and the shielding design of the instrument will keep the
exposure levels at a minimum under normal conditions. The
operator may, however, be required to wear personnel dosimetry
when using the Model 3430 gauge.
RADI
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Summary of Contents for 3430-M
Page 9: ......
Page 14: ...xii NOTES...
Page 19: ...Model 3430 1 5 Figure 1 1 Model 3430 Gauge and Accessories INTRODUCTION...
Page 22: ...1 8 NOTES...
Page 26: ...2 4 Figure 2 3 Backscatter Surface Density Effects Top Layer Effect Curves...
Page 28: ...2 6 Figure 2 4 Effect of Moisture on Depth of Measurement...
Page 48: ...3 20 NOTES...
Page 62: ...4 14 NOTES...
Page 66: ...5 20 D xxxx M xxxx Use keys Moist R xxxx to view data Moist Avg xxxx to view data...
Page 88: ...A 14 NOTES...
Page 111: ...Model 3430 C 17 Figure C 2 3430 Gauge Assembly MAINTENANCE...
Page 115: ...Model 3430 C 21 Figure C 5 3430 Gauge Preamplifier Assembly MAINTENANCE...
Page 117: ...Model 3430 C 23 Figure C 6 3430 Gauge Scaler Assembly MAINTENANCE...
Page 128: ...E 2 Date MS DS Date MS DS STANDARD COUNT LOG Gauge Serial Number...
Page 129: ...Model 3430 E 3 Date MS DS Date MS DS STANDARD COUNT LOG Gauge Serial Number STANDARD COUNT LOG...
Page 130: ...E 4 Date MS DS Date MS DS STANDARD COUNT LOG Gauge Serial Number...
Page 140: ...Index 8 NOTES...