Technical specifications
Model series
880 Delta and 880 Elite.
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Primary application
Industrial gamma radiography.
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Dimensions
Length
13.33in (33.8cm) both models. Weight Exposure device
Width
7.5in (19.1cm) both models. Delta 49lb (22kg), Elite 39lb (18kg).
Height
9in (22.9cm) both models. Depleted Uranium shield
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Delta 34lb (15.4kg), Elite 25lb (11.4kg).
Activity of depleted Uranium shield
Delta 5.4mCi (200MBq) Elite 3.8mCi (141MBq).
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Certification
Type B(U)-85 package, Certification Number USA/9296/B(U)-85.
Accreditation
Sentinel 880 Delta and 880 Elite models are designed, tested and manufactured to meet the
requirements of ANSI N432-1080, ISO 3999-1 2000E, IAEA TS-R-1 (1996), USNRC 10CFR34,
10CFR71 and 49CFR173. Additionally, the exposure devices are designed, manufactured and
serviced under a QA program that has been accredited to ISO 9001 (1994) and approved
in accordance with USNRC 10CFR71, Subpart H. The QA program also includes the reporting
requirements of USNRC 10CFR21 for suppliers of source and byproduct materials.
Construction
Exposure device
Depleted Uranium (DU) shield encased within a welded tubular stainless
steel shell with stainless steel end plates. Interior void space filled with
rigid polyurethane foam.
Removable jacket
One-piece, high impact resistant, plastic jacket incorporating a carrying
handle and base.
Materials
Titanium ‘S’ tube, DU shield, 300 series stainless steel tubular shell and plates, aluminum, brass,
tungsten and polyurethane.
Maximum capacities
Delta 150Ci (5.55TBq) of Ir-192, Elite 50Ci (1.85TBq) of Ir-192.
Source assembly and authorized contents
USNRC Model Number: A424-9 source assembly with a doubly encapsulated Ir-192 sealed
source. The IAEA/USDOT Special Form Certificate number is USA/0335/S. Optional isotopes may
also be utilized in the 880 series exposure devices.
880 Delta
I
sotope Assembly Gamma Half life Approximate Device/source
model energy steel working maximum
number range thickness capacity
Ytterbium-169 918 8-308keV 32 days 2-20mm 20Ci 0.74TBq
Selenium-75 A424-25W 66-612keV 120 days 3-29mm 80Ci 3.00TBq
Iridium-192 A424-9 206-612keV 74 days 12-63mm 150Ci 5.55TBq
Cobalt-60 A424-19 1.17-1.33MeV 5.27 years 50-150mm 65mCi 2.40GBq
880 Elite
I
sotope Assembly Gamma Half life Approximate Device/source
model energy steel working maximum
number range thickness capacity
Ytterbium-169 918 8-308keV 32 days 2-20mm 20Ci 0.74TBq
Selenium-75 A424-25W 66-612keV 120 days 3-29mm 80Ci 3.00TBq
Iridium-192 A424-9 206-612keV 74 days 12-63mm 50Ci 1.85TBq
Cobalt-60 A424-19 1.17-1.33MeV 5.27 years 50-150mm 25mCi 925MBq
Controls and guide tubes
Compatible with standard (660 type) remote controls and source guide tubes.
Inspection requirements
Daily pre-operational inspection for obvious damage to the system.
Maintenance requirements
Most national regulations require inspection and maintenance of the system at quarterly
intervals. The complete annual servicing ensures the integrity of the system.
Shorter frequencies of inspection and maintenance are required when the system is operated
under severe operating environments. In some cases, the system should be serviced immediately
after certain jobs in severe environmental working conditions.
Operating temperature range
-40°F to 300°F (-40°C to 149°C
