institute of applied nuclear physics tirana-albania documents/radiation... · tallinn, estonia,...

Tallinn, Estonia, 23-27 May 2016 1

BRUNILDA DACI

INSTITUTE OF APPLIED NUCLEAR PHYSICS

TIRANA-ALBANIA

KOZETA BODE

Responsible person for Radon Measurement in Albania


� INTRODUCTION

� REGULATION REGARDING TO RADON CONCENTRATION

� METHOD OF MEASUREMENT OF RADON CONCENTRATION

� INTERCOMPARISON OF THE PASSIVE METHOD

� SURVEY OF INDOOR RADON IN ALBANIA

� MAP AND RESULTS

� RECOMMENDATIONS

CONTENT OF THE PRESENTATION


�Based on the Law No. 8025 date 9/11/1995 on

“Protection from the ionising radiation”

�It was approved Regulations for radon

concentration, No. 591, dated 18.08.2011, by the

Decision of Council of Ministers

�The object of these Regulations was to define the

reference levels for the concentration of radon in

workplaces and dwellings and for the activity

concentration of radionuclides in water intended for

human consumption, building materials etc.

REGULATION REGARDING TO RADON

CONCENTRATION


Maximum of radon concentration allowed in residential,

public buildings and workplaces.

In new buildings the average annual radon concentration in the

domestic environments should be no more than 200Bq/m3.

The annual average of radon concentration in domestic

environments constructed before year 2000 should be no more

than 400 Bq/m3.

REGULATION REGARDING TO RADON

CONCENTRATION


DCM No. 957, date 25.11.2015 on «Reference levels and controlmeasures of indoor Radon concentration and other radionuclidesconcentration in commodities»

Article 3: Radon action plan

-RPC shall establish a national program addressing long-term risks from

radon exposure in dwellings, public buildings and workplaces.

-RPC will identify the areas where the radon concentration (as annual

average) in a significant number of buildings is expected to exceed the

reference levels given in this Regulation.

-Radon ingress into new buildings shall be limited so as the reference levels

given in this Regulation are not exceeded.

Article 4: Radon concentration in workplaces

…The annual average concentration of radon in the air inside workplaces

shall not exceed 300 Bq/m3.

NEW REGULATION REGARDING TO

RADON CONCENTRATION


- Nuclear track detectors

(SSNTD) CR 39

- Plastic film

(allyl diglycol carbonate)

- Time of exposure:

3-4 months

RADON MEASUREMENTS

PASSIVE METHOD


- Chemically etching:

in 6 M NaOH

RADON MEASUREMENTS

PASSIVE METHOD

- at temperature of 70-80 C,

for 14 h


- Counting of the tracks with dixhital microscope,

Type OLYMPUS MIC-D

RADON MEASUREMENTS

PASSIVE METHOD

-Calculation of Radon concentration (Bq/m3)


Thermal waters , “Lurisia spa”

(Cuneo, Italy, 2014)

It’s in an excavation site where are present high concentrations of uranium and radon in water and air

INTERCOMPARISON OF THE

PASSIVE METHOD

International Radiation Protection Association

Intercomparison according ISO 17025.


Location F2 for 20 our detectors

LOCATION FOR ALL DETECTORS


RESULTS FROM THE INTERCOMPARISAON


National Project

Financed by Government of Albania

November 1999– February 2000

The aim of the project: Measurement of Radon concentration in:

- ordinary workplaces like office building;

- workplaces in buildings with public access like schools, kindergartens.

In total:

- 38 schools

- 5 kindergartens

- 61 workplaces

FIRST MEASUREMENTS OF RADON IN

WORKPLACES IN ALBANIA


DISTRIBUTION OF THE DETECTORS FOR

RADON MEASUREMENT IN WORKPLACES


THE RESULTS OF MEASUREMENTS OF

RADON IN SCHOOLS IN ALBANIA



RADON IN ORDINARY OFFICE IN ALBANIA



RADON IN TIRANA CITY


�The preliminary map was created on

2003

�Are monitored 32 cities

� In total: 468 dwellings and workplaces

�312 measurements with active method

from the Institute of Geosciences

�156 measurements with passive method

from Institute of Nuclear Physics

NATIONAL INDOOR RADON SURVEY

IN ALBANIA


� IAEA TC Project, ALB/9/008, Titled:

“Upgrading of the Indoor Radon Monitoring Capabilities in Albania”, 2012 - 2014

� Distributed 400 detectors in 18 cities

� Based on the discussions with IAEA experts it is intended tostudy some principal areas of the Albania, which:

1. Have been identified as areas with high radon gas trend, byearlier studies

2. Have a greater population density

3. That not have been studies before

IAEA SUPPORT


� Clasification of the study areas

IAEA SUPPORT

Areas with high density of population

Areas that not have been

studied before

Areas that are with high Radon gas

trend


During February 2013-May 2014, are carried out measurements of Radon concentration in workplaces

- for 13 cities of Albania (biggest cities),

In total:

- 119 schools

- 6 kindergartens

- 48 workplaces

MEASUREMENT OF INDOOR RADON

CONCENTRATION IN WORKPLACES


DISTRIBUTION OF THE DEDECTORS FOR

RADON MEASUREMENT IN WORKPLACES


�THE RESULTS OF MEASUREMENTS OF



�Results for radon indoor

concentration in 13 schools

with values:

�400 -1000 Bq/m3



�Results for radon indoor

concentration in 10 schools with

values:

�200 - 400 Bq/m3



RADON IN ORDINARY OFFICE



RADON IN TIRANA CITY


DATA BASE (EXEL -FILE)

Verbania – Italy, 9 - 13 November 2015 27

� In this map are reported the results obtained in the first stage of indoor radon survey involving 247 measurements and the survey strategy adopted.

�The preliminary information on approximately 10% of the territory, including the biggest cities in Albania

GEOGRAPHICAL DISTRIBUTION OF INDOOR

RADON IN DWELLINGS IN ALBANIA

Verbania – Italy, 9 - 13 November 2015 28

�The indoor radon survey is

conducted from 1999-2014,

�in 10 regions (18 districts) of

Albania,

�247 dwellings are investigated

by means of SSNTD CR 39

passive detectors

�The distribution of Indoor

Radon Concentration (IRnC) is

in the range from

14 to 1238 Bq m-3

THE FREQUENCY DISTRIBUTION OF INDOOR

RADON CONCENTRATION IN DWELLINGS


1. - Inform the relevant institutions

- Ministry of Environmental

- Ministry of Education

- Ministry of Health

2. - Inform the interested institutions for measurements in ordinary workplaces like office building, etc.

SOME CURRENT ACTIVITIES TO REDUCING

RADON LEVELS IN EXISTING BUILDINGS


Recommendations to the above mentioned Institutions in order to take measures to reduce radon concentration by making several interventions:

1. Sealing of floors and walls

2. Sealing of cracks between the walls of the basement due to the discharge of the sink or the basement floor.

3. Sealing of cracks in the floor

4. Increasing indoor ventilation

5. The best isolation of water pipes

SOME CURRENT ACTIVITIES TO REDUCING

RADON LEVELS IN EXISTING BUILDINGS

(corrective actions)


CONCLUSIONS

1. For the Tirana’s schools resulting with high values of

Radon, the measurements will be repeated several times

and detailed studies are needed.

2. The work will continue in the future to increase

significantly the number of measurements.

3. Problem, as always, financial issues.


THANK YOU

FOR YOUR

ATTENTION

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