✓ verbatim from the press ? no verbatim passage
The National Nuclear Energy Commission (CNEN) confirmed an incident involving traces of technetium-99 at the Nuclear and Energy Research Institute (Ipen) in São Paulo. According to an internal report dated May 29, the episode occurred during the removal of biological sensors from an autoclave — sterilization equipment used in radiopharmaceutical production at the institute's Radiopharmacy Center. ?
Press quotes (1)
"De acordo com o Relatório de Ocorrência Interna (ROI) divulgado pelo órgão, o episódio envolveu a presença de traços de tecnécio-99 durante a retirada de sensores biológicos de uma autoclave, equipamento utilizado na produção de radiofármacos."
Two workers classified as occupationally exposed individuals underwent whole-body examinations to check for possible internal contamination. The radioactivity counts detected were low and did not indicate contamination, according to CNEN. The contamination was restricted to the controlled area of the Radiopharmacy Center. ✓
Press quotes (1)
"Dois trabalhadores classificados como indivíduos ocupacionalmente expostos passaram por exames de corpo inteiro para verificar eventual contaminação. De acordo com a CNEN, as contagens detectadas foram baixas e não indicaram contaminação interna."
Technetium-99 is an artificial radioactive element used mainly in nuclear medicine, especially in scintigraphy — diagnostic imaging exams that allow visualization of organs and tissues. According to an expert consulted by the press, the material has a half-life of only 6 hours, rapidly losing its radioactive activity, a characteristic that favors its medical use. ✓
Press quotes (1)
"uma das principais características do tecnécio é seu curto tempo de meia-vida, duração de apenas 6 horas. Segundo Botter, isso significa que a substância perde rapidamente sua atividade radioativa, característica que favorece seu uso em exames médicos."
The case came to light after Sindsef-SP and the Ipen Employees Association demanded clarification about reports of contamination and emergency radiological decontamination procedures. The report was forwarded to the National Nuclear Security Authority (ANSN) for analysis of the safety protocols adopted. ✓
Press quotes (1)
"O caso veio à tona após o Sindsef-SP e a Associação dos Servidores do Ipen cobrarem esclarecimentos sobre relatos de contaminação e procedimentos emergenciais de descontaminação radiológica."
Incident occurred on May 29 during removal of biological sensors from autoclave at Ipen's Radiopharmacy Center
Two workers underwent examinations and showed no internal contamination
Covered by only some sources, or where the accounts diverge.
Covered by only some sources (2)
Sindsef-SP and Ipen Employees Association questioned infrastructure and safety protocols
Ipen supplies radiopharmaceuticals to 430 clinics and hospitals, contributing to 2 million annual procedures
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What were the specific failures in safety protocols that led to the incident?
Why it's still unknown: CNEN confirmed the episode but did not detail the technical causes or procedural failures that resulted in workers' exposure to technetium-99
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What is ANSN's assessment of safety protocol compliance?
Why it's still unknown: The report was forwarded to the National Nuclear Security Authority for analysis, but the results of this evaluation have not yet been released
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Were there other similar incidents at Ipen in recent years?
Why it's still unknown: Sources did not present a history of previous occurrences at the Radiopharmacy Center or other institute facilities