Re: dose constraints

[R.Ryder@dl.ac.uk]

Article 7 of the Euratom Directive for Basic Safety Standards for Radiation 
Safety refers to Dose Constraints.
1. Dose constraints should be used, where appropriate, within the context of 
optimization of radiological protection.
2. Guidance established by each Member State on the appropriate procedures 
to be applied  to indivuals exposed in accordancew with Article 6 (4) (b) 
and (c) may include dose constraints.
(Article 6 refers to justification, optimizationand dose limitation for 
practices)

No values for constraints are given, in the Directive, nor are there any 
quoted in the Britsih Ionising Radiations regulations.

Roy Ryder

Daresbury Laboratory, UK

 ----------
From: Jean-Michel Mure <Jean-Michel.
To:  Multiple recipients of list <; DL/MAINOFFICE/HA
Subject: Re: Dose constraint for the public
Date: 15 July 1996 08:53

<<File Attachment: SMTP_ENV.TXT>>
At 23:14 14/07/1996 -0500, you wrote:
>Hi radsafers,
>
>The EPA in New South Wales is proposing to introduce a dose constraint of
>0.3 mSv/y for members of the public. The dose limit is currently 1 mSv/y 
(as
>per ICRP 60). One implication of the dose constraint is that all shielding
>calculations will have to be carried out using the new value of 0.3 mSv/y 
as
>the integrated dose in areas with an occupancy factor of 1.
>
>I would be interested to learn of the dose constraints for shielding that
>are in place (or are proposed) elsewhere in the world. For example, can
>anyone tell me the limits in the recently released Euratom Directive on
>Basic Safety Standards?
>
>
>Richard Smart PhD
>Department of Nuclear Medicine
>St. George Hospital
>Kogarah, NSW 2217
>Australia
>Tel:61 2 350 3112
>Fax:61 2 350 3991
>Email:R.Smart@unsw.edu.au
>
>
>The Euratom Directive 96 sets the new dose limits to 1 mSv/y for the public
and 20 mSv/y for the workers. Overall, it is a combination of ICRP60
recommendations and ICRP68 dose conversion factors. Nothing really new in
terms of safety standards.
Note that member countries must adapt their own regulations within 4 years.

Regards,

                    
Jean-Michel MURE
ANDRA
DESS/SBSE
Parc de la Croix Blanche
1-7, rue Jean Monnet
92298 CHATENAY MALABRY Cedex
FRANCE

Tel : (1) 46 11 83 74
Fax : (1) 46 11 80 13
Email : Jean-Michel.Mure@andra.fr