Radiation Technology Equipment

BRIT supplies various types of radiation technology equipment like Gamma Chambers, Blood Irradiators and Radiography Exposure Devices.

Gamma Chambers (GC 5000 and GC 1200), Blood Irradiator (BI 2000, Cs-BI 2000) and Radiography Exposure Devices (ROLI-2, ROLI-3, COCAM-120) are designed as per various national and international standards and are approved by Atomic Energy Regulatory Board for use in India and abroad. Gamma Chambers find extensive applications in research related to the effect of radiation on materials, applications in chemical and biological sciences. Blood irradiator 2000 is used for Irradiation of blood sample which reduces the risk of T- Graft vs Host disease in patients who blood transfusion.The radiographic exposure devices need find many applications in non-destructive examinations in industries.

Note:- BRIT also carries out refurbishment and replenishment of sources of these units.

Radiography cameras

BRIT supplies various types of radiation technology equipment like Gamma Chambers, Blood Irradiators and Radiography Exposure Devices.

BRIT supplies ROLI-2, ROLI-3, COCAM-120 radiography cameras. Radiography camera provides users to take panoramic exposure. ROLI-2 is designed for Ir-192 source with a maximum capacity of 2.4 TBq (65Ci) and can be used for radiography of steel with thickness ranging from 5- 40 mm. ROLI -2 which is a portable camera as per ISO-3999 is approved as a Type B (U) transportation package by AERB. ROLI-3, a portable radiography camera, is designed to carry 0.74TBq (20Ci) of Ir-192 Source and approved as a Type A transportation package by AERB. The ROLI-3 radiography device can be used for radiography of steel, brass, copper and light alloys. COCAM-120 is a Type B (U) conforming radiography device designed for a maximum capacity of 4.44 TBq (120Ci) Co-60 which can be used for radiography of steel with thickness ranging from 40- 200 mm. These units conform to the requirements of the International Standard ISO-3999/2004(E) as equipment and AERB code AERB/NRF-TS/SC-1 (Rev.1), Nov-2015 for safe transport of radioactive material.

ROLI-1 camera with MS casing is discontinued for transportation related regulations from AERB. Customers are required to procure ROLI-2 or ROLI-3 cameras.

Salient Features:

  • Reliable and cost effective.
  • Designed to operate with minimum maintenance.
  • Designed to conform to the requirements of Class (M) exposure device in accordance with ISO/3999/1977 and TS -R1 - 200 standards and meet the requirements of Type B (U) radioactive package as per AERB code SC/TR-1, Nov.86.
  • The source remains locked in the camera until the drive system is connected properly.
  • Drive cable can be disconnected only when the source is in safe position.
  • The source can not be driven out unless the front guide tube is properly connected with the camera.
  • The safety interlock system ensures arresting the source in safe position.
  • The source displacement can be monitored at the control unit.

Specifications

Specification ROLI-2 ROLI-3 COCAM-120
Isotope Iridium - 192 Iridium - 192 Cobalt-60
Half life 74 Days 74 Days 5.27 years
Maximum capacity 2.4 TBq. (65 Curies) 0.74 TBq. (20 Curies) 4.4 TBq. (120 Curies)
Inspection range 10 mm to 70 mm steel or equivalent 10 mm to 25 mm steel or equivalent 40 mm to 200 mm steel or equivalent
Shielding material Lead & Heavy alloy Lead & Heavy alloy Lead & Heavy alloy
Camera operation Remotely operated (Teleflex cable drive) Remotely operated (Teleflex cable drive) Remotely operated (Teleflex cable drive)
Maximum operating distance 8 meters from the camera 8 meters from the camera 14 meters from the camera
Front guide tubes (2 Nos.) 3 metres and 1 metre long (one each) 3 metres and 1 metre long (one each) 3 metres long
Overall dimensions 375 mm long, 250 mm wide, and 275 mm height 530 mm long, 370 mm wide, and 181 mm height 375 mm long, 250 mm wide, and 275 mm height
Package Type B (U) Type A Type B (U)
Weight 38 Kg (Approx) 25 Kg (Approx) 316Kg (Approx)
Tungsten collimator

Collimators are essential component of Industrial Radiography set up as they provide radiation safety to the operating personnel and general public at large by directing the emerging radiation beam to the useful area of exposure.A collimator with optimum design features also helps in reducing the scattered radiation which is turn results in radiographs with better sensitivity. Considering the above factors, tungsten collimators with light weight and compact design suitable for directional and panoramic type of exposures have been developed by Radiation Equipment Programme of BRIT.The collimators are fabricated using the above tungsten alloy and 304 stainless steel material as cladding. The tungsten alloy shield for the directional collimator is designed to provide a 50 degree radiation beam and is encased with stainless steel and totally sealed by argon arc welding.

Salient Features:

  • Shielding material : Tungsten alloy
  • Density : 17.2 to 17.6 gm/cc
  • Half value layer for Ir.192: 3.4 mm
  • Tenth value layer for Ir.192 : 11.22 mm
  • Directional Collimator : For unidirectional exposures
  • Panoramic Collimator : For Panoramic exposures

Directional Collimator :

  • When an exposure is taken with the directional collimator attached to the exposure head of the guide tube of gamma camera, the radiation beam coming out will have a 50 degree solid angle in the forward direction.
  • The primary radiation beam intensity in all other area except the front side will be reduced to 5% with the collimator.
  • At a source to film distance (SFD) of 50 cm, the beam will cover an area of a circle with 24 cm radius which is sufficient to cover a film size of 37 cm x 30 cm.
  • Overall size : 44 mm dia x 82 mm long.
  • Weight : 1.15kg.

Panoramic Collimator :

  • When an exposure is taken with the collimator attached to the exposure head of the gamma camera guide tube, the radiation beam will have a 30 degree solid angle all around for panoramic exposures.
  • The primary radiation beam intensity in other areas will be reduced to 5% with the collimator.
  • At a source to film distance (SFD) of 50 cm, the beam will cover a width of a 27 cm.
  • Overall size : 44 mm dia x 82 mm long.
  • Weight : 1kg.
Gamma chamber 5000

Gamma Chamber 5000 is a compact self shielded cobalt-60 gamma irradiator providing an irradiation volume of approximately 5000cc. There are other variations of the Gamma Chambers which are also available.The material for irradiation is placed in an irradiation chamber located in the vertical drawer inside the lead flask. This drawer can be moved up and down with the help of a system of motorised drive which enables precise positioning of the irradiation chamber at the centre of the radiation field.Radiation field is provided by a set of stationary cobalt-60 sources placed in a cylindrical cage. The sources are doubly encapsulated in corrosion resistant stainless steel pencils and are tested in accordance with international standards. Four access holes of 8 mm diameter are provided in the vertical drawer for introduction of service sleeves for gases, thermocouple, etc. A mechanism for rotating/stirring samples during irradiation is also incorporated. The lead shield provided around the source is adequate to keep the external radiation field well within permissible limits. The Gamma Chamber 5000 unit can be installed in a room measuring 4m X 4m X 4m.

Features of GC 5000:

  • Safe and self-shielded:The shielding provided is adequate to limit the radiation field on the external surface of the unit, well within the permissible levels. No additional shielding is required for its installation and use.
  • Automatic control of irradiation time: Built-in timer provides accurate control of irradiation time from 6 seconds onwards. The unit can also be operated manually. PLC based control system have been provided.
  • Manual control of irradiation temperature: It is possible to irradiate samples at low or high temperature by circulating liquid nitrogen or hot air. These can be introduced through the service sleeves provided in the vertical drawer. The irradiation temperature is sensed by a thermocouple and displayed on the panel.
  • Dose uniformity: Stationary source pencils, symmetrically placed in a cylindrical cage ensure good uniformity of radiation field in the sample chamber. In addition a mechanism is also provided for rotating/stirring samples during irradiation.
  • Easy loading and unloading of samples: Sample chamber extends to a convenient height for easy loading and unloading of samples.
  • Safety assurance: The design of Gamma Chamber conforms to American National StandardsANSI N433.1-1977 for safe design and use of self-contained dry source storage gamma irradiators(Category I).It also meets the requirements of type B(U) package for safety in transport of radioactive materials as per AERB code No.SC/TR-1, 1986 of Atomic Energy Regulatory Board of INDIA.

Applications:

Gamma Chamber is a versatile equipment for research studies in many fields such as:

  • Radiobiology
  • Preservation of tissue grafts
  • Mutation breeding
  • Food preservation
  • Sterile male insect technique
  • Biological and genetic effects of radiations
  • Radiation chemistry
  • Radiation effects on materials
  • Radiation sterilization
  • Modification of properties of materials

Specifications of Gamma Chamber 5000 :

Maximum Co-60 source capacity 518 TBq (14000 Ci)
Dose rate at maximum capacity ~ 9 kGy/hr (0.9 Mega Rad/hr)at the center of sample chamber
Dose rate uniformity +25% or better radially; -25% or better axially
Irradiation volume 5000cc approx.
Size of sample chamber 17.2cm (dia) X 20.5cm (ht)
Shielding material Lead & stainless steel
Weight of the unit 5600 kg. approx.
Size of unit 125cm (l) X 106.5cm (w) X 150cm (ht)
Timer range 6 seconds onwards

Installation requirements :

Power requirement 220/230V, 50Hz, 10 Amps, single phase
Room
  • size : 4M X 4M X 4M
  • door size : 1.2M clear width X 2M height
  • pit size :35cm dia X 70cm depth in the floor
  • floor loading capacity : 10MT per sq.M

Gamma Chamber video in English

Gamma Chamber video in Hindi

Gamma chamber 1200

BRIT has introduced GC 1200 in place of GC 900A. It's design conforms to American National Standards, ANSI-N433.1-1977, as well as requirements of type B(U) package for safety in transport of radioactive materials as per AERB code No.SC/TSR-1, 2000 of Atomic Energy Regulatory Board of INDIA.However, BRIT will provide activity for GC900A for the benefit of those who had purchased the unit in the past.

  • Safe and self-shielded: The shielding provided is adequate to limit the radiation field on the external surface of the unit, well within the permissible levels. No additional shielding is required for its installation and use.
  • Automatic control of irradiation time:
  • Built-in timer provides accurate control of irradiation time from 6 seconds onwards. The unit can also be operated manually. PLC based control system have been provided.
  • Manual control of irradiation temperature:
  • It is possible to irradiate samples at low or high temperature by circulating liquid nitrogen or hot air. These can be introduced through the service sleeves provided in the vertical drawer. The irradiation temperature is sensed by a thermocouple and displayed on the panel.
  • Dose uniformity:
  • Stationary source pencils, symmetrically placed in a cylindrical cage ensures good uniformity of radiation field in the sample chamber. In addition a mechanism is also provided for rotating/stirring samples during irradiation.
  • Easy loading and unloading of samples: Sample chamber extends to a convenient height for easy loading and unloading of samples.
  • Safety assurance: The design of Gamm Chamber conforms to American National Standards, ANSI-N433.1-1977 for safe design and ue of self-contained bry source storage gamm irradiators(Category I). It also meets the requirements of type B(U) package for safety in transport of radioactive materials as per AERB code No.SC/TR-1, 1986 of Atomic Energy Regulatory Board of INDIA

Applications :

Gamma Chamber is a versatile equipment for research studies in many fields such as:

  • Radiobiology
  • Preservation of tissue grafts
  • Mutation breeding
  • Food preservation
  • Sterile male insect technique
  • Biological and genetic effects of radiations
  • Radiation chemistry
  • Radiation effects on materials
  • Radiation sterilization
  • Modification of properties of materials

Gamma Chamber can also be used in many other research applications which require irradiation of materials with ionizing radiations to varying doses.

Accessories&Other Supplies:

  1. Attenuator to bring down the radiation dose in the sample chamber by 50% are available on request on chargeable basis.
  2. Ceric-cerous dosimeters are available in sets of 100 ampules of 2 ml. The Kilo Gray Gamma Dosimeter system to read out the dose delivered, is also available.
  3. Biological indicators inoculated with 106 - 107spores of Bacillus Pumilus ATCC 14884, on paper disc are available in multiples of 100 numbers (50 pairs). These are useful when sterility is to be construed without subjecting the sample to destructive sterility test.

After-Sales Service:

BRIT can undertake refurbishing of old units and provide replenishment of cobalt-60 source in the unit.

Specifications of Gamma Chamber 1200 :

Maximum Co-60 source capacity 185 TBq (5000 Ci)
Dose rate to maximum capacity 9 kGy/hr (160 Gy/min)
Dose rate uniformity +25% or better radially; -25% or better axially
Irradiation volume 1200 cc approx.
Size of sample chamber 106 mm (dia) X 140mm (ht)
Shielding material Lead & stainless steel
Weight of the unit 3.1 Tonne.
Size of unit 110cm (l) X 105cm (w) X 158cm (ht)
Timer range 6 seconds onwards

Installation requirements :

Power requirement 220/230V, 50Hz, 5Amps, single phase
Room
  • size : 3M X 3M X 4M (ht)
  • door
Blood Irradiator/Low Dose Irradiator

Blood irradiator is used for irradiation of blood & blood products by Gamma rays to inhibit T-Lymphocyte Proliferation and eliminate the risk of Post transfusion graft versus host disease (T-GVHD) for immune - compromised or suppressed patients.

Applications of BI 2000:

  • Gamma irradiation of cellular blood components is the best current technology to reduce the risk of T-GVHD to the recipients as confirmed by research and therefore being widely practiced world over in hospitals and blood banks as a life saving approach to this problem. Blood is usually irradiated in standard blood bags in dedicated blood irradiators using cobalt-60 or caesium-137 radioactive source. The usual recommended radiation doses are 25 Gy to 35 Gy (1 Gy = 100 rad) for this purposes.
  • BRIT has designed and developed a dedicated blood irradiator called Blood Irradator-2000 (Bl-2000. It is a self-shielded, compact and versatile Gamma Irradiator which can house cobalt-60 source upto 30 TBq (810 Curies) / 112.85 TBq (3050 Ci) of Cs-137.
  • It provides a dose rate ofabout 11 Gy/minute approximately inside the sample chamber. It is incorporated with a sample rotating mechanism to obtain better uniformity of dose to the products. The control system is PLC (Programmable Logic Controller) based with touch sensitive color screen using user-friendly software and a printer for data recording.
  • The unit can be installed in a room without any additional shielding. Its design conforms to all relevant national and international standards and safety codes. It meets the requirement of Type B(U) package for transportation.

Servicing Source Replenishment & Disposal:

BRIT will undertake servicing and source replenishment whenever required. Source Disposal: BRIT will also take up source disposal as and when required.

Features of BI 2000:

  • Safe and self shielded: No additional shielding is required. The radiation field on the external surface of the unit is much below the permissible level.
  • Dose uniformity: Sample rotation mechanism and stationary source pencils symmetrically placed in a cylindrical cage ensure good uniformity of radiation field within 25% variation or better.
  • Control system: PLC based control system with touch sensitive color screen having user friendly software and printer for data recording.
  • Computerised calculations of dose and termination of irradiation based on time as well as dose modes with Cobalt-60 source decay correction.
  • Sensing & display of irradiation temperature on the panel.
  • Sample chamber door inter lock for safety operation.
  • Manual control of irradiation temperature inside sample chamber.
  • Design conforms to codes of Atomic Energy Regulatory Board (AERB), India, as well as American National Standards - ANSI-N433.1-1977 for safe design and use of self contained dry source storage Gamma irradiator (Category-I).
  • Safety assurance: The unit is type B(U) approved by Atomic Energy Regulatory Board (AERB), India for safety in transport of radioactive material as per relevant national and international safety standards.

Specifications :

Co-60 Source Capacity 30 TBq (810 ci ) of Co-60 or 112.85 TBq(3050 Ci) of Cs-137
Dose rate at maximum capacity
  • 11 Gy/min. approx
  • Radial +/-25% or better
  • Axial +/-25% or better

Sample Chamber

Volume 3 liters
Size 13 cm (dia) X 21.7 cm (ht)

Rotating Container of Sample Chamber

Volume 2 liters
Size 12 cm (dia) X 17.9 cm (ht)
Speed 60 RPM
Shielding material Lead & Stainless Steel (SS 304L)
Weight of the unit 2600 Kgs. Approx.
Size of the unit 112 cm (l) x 95 cm (w) x 171 cm (ht)
Timer range 6 seconds onwards
Power requirement 220/230 V, 50 Hz, 5 Amps,Single Phase, AC supply
Control system Electrical as well as PLC based with touch sensitive colored LCD screen and printer for data recording

Printer A-4 size for data printout Installation Requirements :

Room for the unit

Size 3M X 3M X 3M (minimum)
Door size 1.1M Clear width X 2 M (height)
Floor loading capacity 5 Tons per sq.meter

 

Contact :

Piyush Srivastava

Senior General Manager, Engineering & Corporate Planning

Board of Radiation & Isotope Technology, BRIT/BARC Vashi Complex, Sector 20 Vashi, Navi Mumbai-400 703

(022)2788 7300 / 9757454852

 piyush[at]britatom[dot]gov[dot]in