Code of practice for the protection of persons against ionizing radiations arising from medical and dental use.

  • Great Britain. Radioactive Substances Advisory Committee
Date:
1964
Catalogue details

Licence: Public Domain Mark

Credit: Code of practice for the protection of persons against ionizing radiations arising from medical and dental use. Source: Wellcome Collection.

    55/144 (page 39)
    up to 1 curie of I-131 would be permitted in a Grade B laboratory. (ii) The tipping of radioactive material (in solid form) from its can is regarded as a “‘ simple dry operation ”’. TABLE II Grade of laboratory required for various quantities of isotopes of various radiotoxicities Grade of laboratory required for unsealed isotopes at levels of activity specified below Classification 3 B A High toxicity (Class 1) = tOdieC 10 pe - Ime > Ime Medium toxicity Upper Sub-Group A (Class 2) ; ee ee us SEC I mc— 100 mc > 100 mc Medium toxicity Lower Sub-Group B (Class 3) < 100 me 100 mc-10c = IOC Low toxicity (Class 4) = .10:¢ 10 c-1000 c > 1000 c Procedure Modifying factor Storage (stock solutions) x 100 Simple wet operations x 10 Normal chemical operations oul risk of spills 0%] Simple dry operations a Dry and dusty operations x 0-01