[ RadSafe ] Radiation dose rate control levels internationally

[Dean Crouch]

Hi Nick
Don't forget about the pro-rata limits in WA.
http://www.radiologicalcouncil.wa.gov.au/pdf/DoseLimits.pdf

*Ionising Radiation limits for a radiation worker*
The dose limits for radiation workers are –
• in any period of 5 years, an average effective dose of 20 millisieverts
per year;
• in a period of 12 months, an effective dose of 50 millisieverts;
• in any period of less than 12 months but not less than 1 month, an
effective dose of the amount which is the product of 50 millisieverts and
the ratio of that period in weeks to 52 weeks;
• in any period of less than 1 month, an effective dose of 1/12 of 50
millisieverts.

 The dose limits for persons other than radiation workers are –
• in any period of 5 years, an average effective dose of 1 millisievert per
year;
• in any period of 12 months, an effective dose of 5 millisieverts; and
• in respect of an area which such persons might continuously occupy –
− an effective dose of 20 microsieverts in any 1 hour; and
− an effective dose of 250 microsieverts in any period of 7 days.

Dean Crouch
Resources Health & Safety Services
Mob: 0410 637 994
Email: d.crouch at resourcessafety.com.au
LinkedIn: www.linkedin.com/in/deancrouch


On Thu, Feb 14, 2019 at 8:57 AM Nick Tsurikov <nick.tsurikov at gmail.com>
wrote:

> Hello,
> In Western Australia we have, for the workers:
> - Supervised area - background + 0.5 microSv/h (possibility for a worker to
> exceed 1 mSv/year in 2000 hours), only a general induction required
> - Controlled area - background + 2.5 microSv/h (possibility for a worker to
> exceed 5 mSv/year in 2000 hours), a 'radiation' induction required
> - Restricted area - background + 7.5 microSv/h (possibility for a worker to
> exceed 15 mSv/year in 2000 hours), a radiation induction and an access
> permit required
> Kind regards
> Nick
>
> On Tue, Feb 12, 2019 at 11:47 PM BRISSON Nicolas <nicolas.brisson at irsn.fr>
> wrote:
>
> > Hi all,
> >
> > If you mean dose rate limits in facilities, we don't have any.
> > Our limits are integrated dose for a month or an hour.
> >         - Public aera < 1,25 mSv for a month
> >         - Controlled area 1  < 4 mSv for a month
> >         - Controlled area 2 < 2 mSv for an hour
> >         - Controlled area 3 < 100 mSv for an hour and always < 100 mSv
> > averaged for 1 second (needs some explanation here- It's for X-rays
> device)
> >         - Controlled area 4 (forbidden area) > 100 mSv for an hour or >
> > 100 mSv averaged for 1 second
> >
> >
> > French legislitation is in the course of being modified following changes
> > in european legislation in 2013. We are still waiting for a ministerial
> > order with something a bit more operational :)
> >
> > Regards,
> >
> > Nicolas BRISSON
> >
> >
> >
> > -----Message d'origine-----
> > De : RadSafe [mailto:radsafe-bounces at health.phys.iit.edu] De la part de
> > Rees, Brian G
> > Envoyé : lundi 11 février 2019 21:54
> > À : Radsafe (radsafe at health.phys.iit.edu)
> > Objet : [ RadSafe ] Radiation dose rate control levels internationally
> >
> > At what level do other countries set up radiation control boundaries?
> > 1,2, or 5 mr/hr ...(well, OK, most all the rest of the world would use
> 10,
> > 20, or 50 uSv/hr), but what do others do?
> >
> > Thanks,
> > Brian Rees
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