[ RadSafe ] RE: Request information for shielding purpose

[Yuri Ravello]

Dear Robert,

Do you know how much is the “instantaneous dose rate” IDR for the
acceptability of shielding by the regulatory authority? In x-ray
applications (medical).

Thanks in advance.

 

Best regards,

 

Lic. Yuri Ravello

Evaluador-Inspector

Oficina Técnico de la Autoridad Nacional

Instituto Peruano de Energía Nuclear

Calle Justo Vigil 456 - Magdalena del Mar

Teléfono: +51.1.4631170 o +51.1.4631171

Fax: +51.1.4631166

-----Mensaje original-----
De: Yuri Ravello [mailto:yravello at ipen.gob.pe] 
Enviado el: lunes, 27 de marzo de 2006 12:28
Para: 'radsafe at radlab.nl'
Asunto: RE: Request information for shielding purpose

 

Dear Sirs,

I have to mention one thing about my consult in the list: the dose rate that
we measured was at control booth. If we take the NCRP recommendations, the
dose in a wk must be less than 0,1 mGy. We calculate the dose in function of
the workload: the result was that the shielding is good. But usually, the
dose rate we measured is less than 100 uSv/h [kerma]. So, when we measured
the 500 uSv/h, we asked: is there a dose rate limit for practice purpose?

 

I hope this additional information will be useful to clear our trouble.

 

Thank you very much for who answered my first message.

 

God bless you,

 

Lic. Yuri Ravello

Evaluador-Inspector

Oficina Técnico de la Autoridad Nacional

Instituto Peruano de Energía Nuclear

Calle Justo Vigil 456 - Magdalena del Mar

Teléfono: +51.1.4631170 o +51.1.4631171

Fax: +51.1.4631166

-----Mensaje original-----
De: Yuri Ravello [mailto:yravello at ipen.gob.pe] 
Enviado el: lunes, 27 de marzo de 2006 9:33
Para: 'radsafe at radlab.nl'
Asunto: Request information for shielding purpose

 

Dear Sirs,

We are testing a shielding design for a x-ray medical use equipment. We
measured the expose (kerma) rate: it is about 500 uSv/h. Because we cannot
measure integrated exposure, we are looking for the limit for expose rate.
So please, if anyone has experience about it, write me. Thanks in advance.

 

Sincerely,

 

Lic. Yuri Ravello

Evaluador-Inspector

Oficina Técnico de la Autoridad Nacional

Instituto Peruano de Energía Nuclear

Calle Justo Vigil 456 - Magdalena del Mar

Teléfono: +51.1.4631170 o +51.1.4631171

Fax: +51.1.4631166