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Sentinel projetor Operating And Maintenance Manual page 7

880 series source projector

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Isotope
Assembly
Model Number
Ytterbium-169
91810
Selenium-75
A424-25W
Iridium-192
A424-9
Cobalt-60
A424-19
Cesium-137
A424-30
Model 880 Omega authorized contents
Isotope
Assembly
Model Number
Ytterbium-169
91810
Selenium-75
A424-25W
Iridium-192
A424-9
Source output
Isotope
At 1 m per Ci (37 GBq)
Ytterbium-169
0.125 R/hr
Selenium-75
0.203 R/hr
Iridium-192
0.48 R/hr
Cobalt-60
1.30 R/hr
Cesium-137
0.32 R/hr
Selected attenuation data
Material
Approximate
Material
Density
3
(g/cm
)
Concrete
2.35
Aluminum
2.65
Steel
7.80
Lead
11.34
Tungsten
17.80
DU
18.70
Operating Distance
The distance between the remote control and the exposure head is determined by summing the length of
the remote control conduits plus the total length of source guide tubes used, and normally should not
exceed 47 ft (14.2 m) with standard 25 ft. controls.
Standard remote controls:
25 ft (7.6 m), 35 ft (10.7 m), 50 ft (15 m)
Standard source guide tubes (projection sheaths):
7 ft (2.1 m) set of three source guide tubes: 21 ft total (6.3 m)
Gamma
Half Life
Energy Range
8-308 keV
32 days
66-401 keV
120 days
206-612 keV
74 days
1.17-1.33 MeV
5.27 years
663 keV
30 years
Gamma
Half Life
Energy Range
8-308 keV
32 days
66-401 keV
120 days
206-612 keV
74 days
1.25 mSv/hr
1.3 R/hr
2.03 mSv/hr
2.2 R/hr
4.80 mSv/hr
5.2 R/hr
13.0 mSv/hr
14.0 R/hr
3.20 mSv/hr
3.4 R/hr
Approximate Half Value Thickness
Ytterbium-169
Selenium-75
1.140 (29.0)
1.180 (30.0)
-
1.100 (27.0)
0.170 (4.3)
0.315 (8.0)
0.032 (0.8)
0.039 (1.0)
-
0.032 (0.8)
-
-
1.3
TECHNICAL SPECIFICATIONS
Approximate
Steel Working
Thickness
2-20 mm
3-29 mm
12-63 mm
50-150 mm
12-63 mm
Approximate
Steel Working
Thickness
2-20 mm
3-29 mm
12-63 mm
At 1 ft per Ci (37 GBq)
13.0 mSv/hr
22.0 mSv/hr
52.0 mSv/hr
140 mSv/hr
34.0 mSv/hr
Inches (mm)
Iridium-192
Cobalt-60
1.700 (43.2)
2.400 (61.0)
-
-
0.512 (13.0)
0.827 (21.0)
0.200 (5.1)
0.500 (12.7)
0.130 (3.3)
0.310 (7.9)
0.050 (1.3)
0.270 (6.8)
Device/Source
Maximum
Capacity
20 Ci
0.74 TBq
150 Ci
5.55 TBq
50 Ci
4.81 TBq
25 mCi 925 MBq
380 mCi 14.0 GBq
Device/Source
Maximum
Capacity
30 Ci
1.11 TBq
80 Ci
2.96 TBq
15 Ci
0.55 TBq
Cesium-137
3.00 (76.2)
-
0.900 (22.9)
0.250 (6.4)
0.225 (5.7)
0.125 (3.2)

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This manual is also suitable for:

Delta 150 ciSigma 130 ciElite 50 ciOmega 15 ci