Model Mark 1 Series, Cs-137 Self-Contained Irradiator
Features
- Multiple Turntable Positions
- Many Dose Rates Available When Using Attenuators
- Good Dose Uniformity for the Exposure Chamber
- Reliable with Minimal Service
Applications
Biomedical & Chemical Research, Blood Irradiation
Description
Foss Therapy Services offers refurbished Mark I Series Irradiators originally manufactured by J L Shepherd & Assoc. Refurbished Mark 1 units available include the Models:
- #22
- #25
- #30
- #68
- #68A
Foss Therapy Services has engineered new Source Control Systems including a Control Panel, Operating Tower, and Turntable Drive System.
The Turntable Drive System provides upgraded capacity and reliability. The spur gear assembly removes > 50% of the parts from the system.
Specifications
Special Form Cs-137 Sources:
- A maximum of 832.5 TBq (22,500 Curies) in an aluminum/tungsten source holder
Maximum Dose Rate:
- 1220 cGy/hr @ 25 mm +/- 10%
Sample Chamber
Model 25
Sample size: 6” diameter x 8” high
Volume: 3.7 liters
Dose Rate with 800 Ci. Cs137 source: ~115 R/minute
Dose Rate to 100 mm diameter samples: ~300 R/minute
Model 30
Sample size: 8” diameter x 10” high (15 x 20 cm)
Volume: 8.2 liters
Dose Rate with 1,100 Ci. Cs137 source: ~135 R/minute
Dose rate to 100 mm diameter samples: ~370 R/minute
Model 68
Sample size: 12”diameter x 12” high (30 x 30 cm)
Volume: 22 liters
Dose Rate with 1,900 Ci. Cs137 source: ~ 135 R/minute
Dose Rate to 100 mm diameter samples: ~500 R/minute
Model 68A
Sample size: 12” diameter x 14” high (30 x 36 cm)
Volume: 26 liters
Dose Rate with 2,200 Ci.Cs137 source: ~ 150 R/minute
Dose Rate to 100 mm diameter samples: ~ 800 R/minute
Safety Measures
- External Radiation Levels: The Mark 1 Series has very low external radiation levels, which average < 50 microSv/hr at the surface and < 20 microSv/hr at 30 cm from the surface of the device (OFF position)
- Interlocks: The Mark 1 System includes FIVE levels of interlocks to prevent accidental exposures
Control Panel
- Timer – preset or manual
- ON OFF switches
- Toggle switch to select PRESET or MANUAL timing
- ON OFF lights
- Keyed power switch with light
- LOW AIR light
- INTERLOCK light (all interlocks are satisfied)
- Stainless steel vs OEM aluminum
- 3/4″ turntable drive shaft vs OEM 1/4″
- Single drive chain/no idlers vs. OEM multiple chains with multiple idlers
- Heavy duty ball transfer bearings for turntable rotation
- Stainless steel centering pin
- Dual rotating pins
- Insert handle and storage tray included
Mechanical & Electrical Specifications:
- Size: 34″ diameter x 85″ high (85 x 216 cm)
- Weight: 6,500 lbs. (2727 kg) maximum
- Power: 110 or 220 V, 50 or 60 Hz, 15 amp
Accessories
- Attenuators: X2, X5, x10, x50, x100
- Test Tube Holders
- Animal Holders
- Caustic Acid Vessel
- Heater Assembly
- Dewar
Options
Foss Therapy Services provides emergency and scheduled service on existing machines and new dosimetry. We can move these systems as well as decommission units which are no longer needed.
