Sentinel 989 - Model 989 - Optional Fixture Kit

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Each source capsule is seal welded and meets the requirements of Special Form radioactive material in
accordance with IAEA Safety Series SSR-6 (2012 Edition) under USA special form certificate USA/0502/S-96.
Additionally, the sealed sources have been designed and tested to comply with the requirements of International
Standard ISO 2919:2012(E) and American National Standard N43.6-2007 and have achieved an ANSI/ISO
classification of C64344. The source assembly meets the design and testing requirements of ISO 3999:2004(E)
and ANSI N432-1980 when used within the Model 989 exposure device with the Sentinel
TM
authorized
pneumatic actuator (or Sentinel
TM
remote crank out control assemblies).
The Model 989 must only be used with a QSA Global, Inc Model 97941, Model 98940 or Model 98941 source
assembly containing a Model X540/1 special form sealed source with a maximum of 20.0 Curies (740 GBq) of
Selenium-75. Selenium-75 sources of a lesser activity and a smaller focal are available.
The source assembly and the contained sealed source capsule in the Model 989 may only be changed by QSA
Global, Inc. or one of its authorized service centers. Source changing and replacement, or change in the
collimation for this device, requires the use of a shielded cell and specially designed tools. Therefore, all
devices must be returned to QSA Global, Inc. or one of its authorized service centers for source replacement
and/or for source disposition. While empty, annual servicing and changes to the collimation can be performed
on the Model 989 exposure device.
Model 989 Exposure Device Authorized Contents
Isotope
Source
Assembly
Model Number
Gamma
Energy Range
Approximate
Half Life
Device/Source
Steel Working
Thickness
Maximum
Capacity
Selenium-75
97941
66-401 keV
120 days
3-29 mm
20 Ci. 740 GBq
Selenium-75 98940 66-401 keV 120 days 3-29 mm 20 Ci. 740 GBq
Selenium-75
98941
66-401 keV
120 days
3-29 mm
20 Ci. 740 GBq
Source Output
Isotope At 1 m per 37 GBq (1 Ci) At 1 ft per 37 GBq (1 Ci)
Selenium-75 2.03 mSv/hr (0.203 R/hr) 22.0 mSv/hr (2.2 R/hr)
4) Model 989 – Optional Fixture Kit
When the optional fixture kit is not used with the Model 989, it can be secured to pipes to perform radiography
as shown in Figure 8.