Development of an irradiation system for a small size continuous run multipurpose gamma irradiator

• Autorzy: Calvo W. A. P. , Rela P. R. , Napolitano C. M. , Kodama Y. , Omi N. M. , da Costa F. , de Andrade e Silva L. G.
• Konferencja: Proceedings of the International Conference on Recent Developments and Applications of Nuclear Technologies 15-17 September 2008, Białowieża, Poland
• Języki publikacji: EN

Abstrakty

EN

The Radiation Technology Center from IPEN-CNEN/SP, Brazil, developed a revolutionary design and national technology, a small-sized continuous run and multipurpose industrial gamma irradiator, to be used as a demonstration facility for manufacturers and contract service companies, which need economical and logistical in-house irradiation system alternatives. Also, to be useful for supporting the local scientific community on development of products and process using gamma radiation, assisting the traditional and potential users on process validation, training and qualification of operators and radioprotection officers. The developed technology for this facility consists of a continuous tote box transport system, comprising a single concrete vault, where the automated transport system of products inside and outside of the irradiator utilizes a rotating door, integrated with the shielding, avoiding the traditional maze configuration. Covering 76 m2 of floor area, the irradiator design is a product overlap sources and the maximum capacity of cobalt-60 wet sources is 37 PBq. The performed qualification program of this multipurpose irradiator was based on AAMI/ISO 11137 standard, which recommends the inclusion of the following elements: installation and process qualification. The initial load of the multipurpose irradiator was 3.4 PBq with 13 cobalt-60 sources model C-188, supplied by MDS Nordion – Canada. For irradiator dose optimization, the source distribution was done using the software Cadgamma developed by IPEN-CNEN/SP. The polymethylmetacrylate (PMMA) dosimeter system, certified by the International Dose Assurance Service (IDAS) of the International Atomic Energy Agency (IAEA) was used for irradiator dose mapping. The economic analysis, performance concerning with dose uniformity and cobalt-60 utilization efficiency were calculated and compared with other commercial gamma irradiators available on the market.

Słowa kluczowe

EN

multipurpose irradiator; gamma irradiator; compact irradiator; cobalt-60 irradiator; gamma facility

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2009
• Tom: Vol. 54, No. 2
• Strony: 93--97
• Opis fizyczny: Bibliogr. 10 poz., rys.

Twórcy

autor

Calvo W. A. P.

autor

Rela P. R.

autor

Napolitano C. M.

autor

Kodama Y.

autor

Omi N. M.

autor

da Costa F.

autor

de Andrade e Silva L. G.

• Brazilian National Nuclear Energy Commission (CNEN/SP), Institute for Nuclear and Energy Research (IPEN), Radiation Technology Center (CTR), 2242 Prof. Lineu Prestes Ave., – Cidade Universitaria, 05508-000, Săo Paulo – SP, Brazil, Tel.: [phone],

Bibliografia

• 1. American Society for Testing and Materials (1993) Use of a polymethylmethacrylate dosimetry system. Committee E-10, Subcommittee E10-01. ASTM E 1276-93
• 2. Association for the Advancement of Medical Instrumentation (1994) Sterilization of health care products – requirements for validation and routine control – radiation sterilization. AAMI/ISO 11137/R2-94
• 3. Beers EW (2000) The micro-cell irradiator: a small volume gamma irradiator for on-site and special processing. Radiat Phys Chem 57:573–576
• 4. Clouser JF, Beers EW (1998) The Minicell™ irradiator: a new system for a new market. Radiat Phys Chem 52:409–412
• 5. Comissao Nacional de Energia Nuclear (1998) Licenciamento de Instalações Radiativas. CNEN-NE-6.02. Rio de Janeiro
• 6. Corley JT (1998) Cobalt-60 gamma irradiation current status, trends and insights. Radiat Phys Chem 52:419–424
• 7. International Atomic Energy Agency (1990) Guidelines for industrial radiation sterilization of disposable medical products (Cobalt-60 gamma irradiation). IAEA Technical Report Series no. 539. IAEA, Vienna
• 8. International Atomic Energy Agency (1992) Radiation safety of gamma and electron irradiation facilities. IAEA Safety Series no. 107. IAEA, Vienna
• 9. McKinney D, Perrins R (2000) Centurion a revolutionary irradiator. Radiat Phys Chem 57:569–571
• 10.MDS Nordion Sterilization Technologies (2005) Technical brochures BREVION™, PALLET IRRADIATOR™, JS-9500™, JS-9600™ e JS-10000™