Decommissioning of Radiation Facilites Specific Regulation

Add Comment ؟

Required field
You can add your visuals to the project with no more than 5000 characters,1000 Characters left
user can hide his name by uncheck Visible in comments in profile Section,

Required field Wrong verification code

Add comment

Comments

1.00000000000000

Purpose
Agencies
Effect
Subjects

1.00000000000000

Section 1

Add Comment

1. This specific regulation sets the reference levels of radon activity concentration in dwellings and workplaces.

Comments.

Add Comment

Section 2

Add Comment

2. This specific regulation shall apply to all type of building including dwellings, schools, and workplaces.

3. This specific regulation does not establish exposure requirements for radon and its progeny in workplaces where occupational exposure to other radionuclides in the ²³⁸U decay series or the ²³²Th decay series is controlled as a planned exposure situation.

4. This specific regulation does not set requirements in case of nuclear and radiological emergency resulted to radioactive contamination of building or its components.

Comments.

Add Comment

Section 3

Add Comment

Alpha particle

Two neutrons and two protons bound as a single particle that is emitted from the nucleus of certain radioactive isotopes in the process of decay.

Exposure Due to Radon

The time integral over the activity concentration of radon for a defined period. Exposure due to radon is a measurand related to the potential alpha energy exposure with the equilibrium factor taken into account and is, therefore, related to the effective dose.

Integrating device

A device that measures a single average concentration value over a period. Also called a time integrating device.

Mitigation or remediation

These terms are interchangeable and refer to steps taken in an existing building to reduce radon entry.

Optimization (of protection and safety)

The process of determining what level of protection and safety would result in the magnitude of individual doses, the number of individuals (workers and members of the public) subject to exposure and the likelihood of exposure being as low as reasonably achievable, economic, and social factors being considered (ALARA).

Radon

A colorless, odorless, naturally occurring, radioactive, inert, gaseous element formed by radioactive decay of radium (Ra) atoms. For the purposes of this specific regulation, radon refers to ²²⁰Rn and ²²²Rn.

Reference level

For the emergency exposure situation or an existing exposure situation, the level of risk or activity concentration above which it is not appropriate to plan to allow exposures to occur and below which optimization of protection and safety would continue to be implemented.

Dwellings

A self-contained substantial unit of accommodation, such as a house, apartment, building, or part of a building.

Workplaces

A place, such as an office or factory..etc., where people are employed.

Comments.

Add Comment

2.00000000000000

Section 4

Add Comment

5. Reference levels are utilized in order to optimize protection for the current exposure. Priority shall be given to exposures over the reference level during optimization of protection and shall continue to be implemented below the reference level.

6. Considering the occupancy time factors, the reference levels for dwellings and workplaces, for indoor radon activity concentration expressed in terms of the annual average activity concentration in air are indicated below.

7. The indoor radon activity concentration for dwellings shall be kept below:

(a) (300) Becquerel per cubic meter (Bq.m^-3) in terms of annual average activity concentration of radon in air for existing buildings.

(b) (200) Becquerel per cubic meter (Bq.m^-3) in terms of annual average activity concentration of radon in air for new buildings.

8. The indoor radon activity concentration for workplaces shall be kept below:

(1000) Becquerel per cubic meter (Bq.m^-3) in terms of annual average activity concentration of radon in air.

Comments.

Add Comment

Section 5

Add Comment

9. The measurement of indoor radon activity concentration should be performed according to the approved standard methods of measurement, which can be used for concluding whether the reference level is exceeded or not.

Comments.

Add Comment

Section 6

Add Comment

10. The responsible parties shall ensure that an action plan is established comprising coordinated actions to reduce activity concentrations of radon in existing buildings and in future buildings, which includes:

(a) Reducing activity concentrations of radon and consequent exposures to levels at which protection is optimized;

(b) Giving priority to actions to reduce activity concentrations of radon in those situations for which such action is likely to be most effective;

(c) Including in building codes appropriate preventive measures and corrective actions to prevent the ingress of radon and to facilitate further actions wherever necessary.

11. All responsible parties shall ensure that the indoor radon activity concentration in dwellings is below the reference levels mentioned in article (7) of this specific regulation.

12. For the workplaces, the employer shall ensure that activity concentrations of radon in workplaces are as low as reasonably achievable below the reference level mentioned in article (8) of this specific regulation, and shall ensure that protection and safety is optimized.

13. If, despite all reasonable efforts by the employer to reduce activity concentration of radon, the activity concentration of radon in workplaces remains above the reference level, the relevant requirements for occupational exposure in planned exposure situations shall apply.

Comments.