Re: ISO or BS standard for Measurement of Occupational Exposure to Ionization Radiati
ISO and BS standards are copyrighted documents. Unfortunately we can not 'share' copyrighted documents here.
I have no idea where you could get one for free but you might try your local library. Some of the bigger ones used to have some standards and specifications, but it's been quite a few years since I got a standard that way so I can't say what the current practice is even locally.