Radon in kindergartens and other workplaces in

Bosnia and Herzegovina23-27 May 2016

Tallinn, Estonia

Bosnia and Herzegovina

State Regulatory Agency for Radiation and Nuclear Safety

� Kindergatens and

schools

� Kindergarten „Bosanska

Krupa“

� Brief about Rn-222 in

charcoal mine‘s in B&H

� Reminder

Introduction

• Public Health

Institute of FB&H

– authorized

• Measurments on

request

• Municipality

Bosanska Krupa

• Kindergartens

and schools

Kindergartens and schoolsLOCATIONS

Bosanska Krupa

• Passive method

• Charcoal canisters

• April 2013

• Min.12 hours closed – before&during

• High-resolution gamma spectrometer

relative efficiency of 30 % with

integrated electronic system and

software for processing of spectra,

analysis and evaluation of the results

of measurements of GAMMA VISION

(Ortec)

• 25 Bq/m3– 831 Bq/m3

Kindergartens and schools MEASURMENTS

(basements, classrooms,

offices, sleeping rooms,

rooms for working staff as

well as rooms designed for

living in a kindergarten)

Kindergartens and schools RESULTS

• Downtown of city

• All rooms measured

• Max. 831 Bq/m3

• Older group, toilet –

ground-floor

Kindergarten „Bosanska Krupa“

Kindergarten „Bosanska Krupa“ RESULTS 1

BOSANSKA KRUPA VRTIC 2013

PERIOD UZORKOVANJA: 08/04-10/04/2013

DATUM MJERENJA: 11/04/2013 i 12/04/2013

LOKACIJA VRIJEME

POCETKA I

ZAVRSETKA

UZORKOVANJA

POCETAK

MJERENJA

MJERENJA

VRIJEME

MJERENJA

(s)

MASA

PRIJE

(g)

MASA

POSL.

(g)

RAZLIKA

MASE (g)

AKTIVNOST

(Bq/m3)

KAN 1 JASLICE SPRAT 1 18:19-18:21 11/04/2013

14:00

2700 130.10 134.07 3.97 348±21

KAN 2 JASLICE SPRAT 2 18:20-18:22 11/04/2013

10:34

2700 133.30 138.55 5.25 295±18

KAN 3 KANCELARIJA

DIREKTOR

18:23-18:26 11/04/2013

10:37

2700 132.78 137.27 4.49 163±10

KAN 4 IGRAONICA

SPRAT

KLACKALICA

18:25-18:26 11/04/2013

15:40

7200 129.83 134.79 4.96 318±19

KAN 5 IGRAONICA

TRAMPOLINA

18:25-18:25 11/04/2013

9:43

2700 131.78 136.18 4.40 262±16

Kindergarten „Bosanska Krupa“ RESULTS 2

KAN 5 IGRAONICA

TRAMPOLINA

18:25-18:25 11/04/2013 9:43 2700 131.78 136.18 4.40 262±16

KAN 6 SOBA ZA OSOBLJE

SPRAT

18:27-18:27 11/04/2013

14:50

2700 130.77 135.02 4.25 190±11

KAN 7 CETVRTA SOBA

PRIZEMLJE

18:29-18:29 12/04/2013 7:50 2700 130.95 136..38 5.43 270±16

KAN 8 STARIJA ODG. GRUPA 18:31-18:30 12/04/2013 7:50 2700 133.64 139.76 6.12 206±12

KAN 9 HOL PRIZEMLJE 18:35-18:31 12/04/2013 9:00 2700 132.72 138.40 5.68 211±13

KAN 10 LEPTIRIC 18:39-18:33 11/04/2013

12:23

2700 130.18 136.07 5.89 169±10

KAN 11 ULAZ DONJI KOD WC 18:41-18:35 11/04/2013

12:25

2700 132.51 135.76 3.25 121±7

KAN 12 JASLICE PRIZEMLJE 18:43-18:35 11/04/2013 9:50 2700 134.47 137.14 2.67 160±10

KAN 13 SEKRETAR

KANCELARIJA

18:45-18:36 11/04/2013

13:10

2700 129.90 134.20 4.30 102±6

Kindergarten „Bosanska Krupa“ RESULTS 3

KAN

14SOBA ZA

ODGOJITELJICE

18:46-18:38 11/04/2013

11:24

2700 131.4

9

136.58 5.09 80±5

KAN

15TRPEZARIJA 18:48-18:39 11/04/2013

13:15

2700 131.1

6

137.18 6.02 182±11

KAN

16KUHINJA 18:52-18:41 12/04/2013

09:03

2700 133.2

3

141.28 8.05 360±22

KAN

17MAGACIN 18:53-18:43 12/04/2013

10:23

2700 132.4

4

137.25 4.81 250±15

KAN

18KOTLOVNICA 18:55-18:45 12/04/2013

10:22

2700 130.6

0

137.13 6.53 632±38

KAN

19ULAZ GORNJI 18:57-18:44 12/04/2013

11:09

2700 129.9

1

135.51 5.60 342±21

KAN

20WC STARIJA

GRUPA

19:05-18:47 12/04/2013

10:10

2700 132.5

1

137.85 5.34 831±50

Kindergarten „Bosanska Krupa“ MITIGATION

• Need for mitigation

• Provided resources

• Reconstruction of the

space

• New ventilations for

„channeling“ Rn-222

• More frequent airing

Brief about Rn-222 in charcoal mine‘s in B&H

• Doctoral thesis „The

study of radon in the

coal mines of Bosnia

and Herzegovina by

applying nuclear

measurement methods“

by Zejnil Trešnjo,

physicist

• Two type measurments:

- solid state nuclear track

detectors – SSNTD

- ionization chamber

radon detector

Brief about Rn-222 in charcoal mine‘s in B&H - 1

• Parallel – gamma dose rate (ADL Gamma Tracer) & „control

points“

• Equipment

- Radosys, Hungary & CR-39

- Alpha GUARD, Germany type PQ 2000 PRO/MC50

� 2 - start & after of measurements

� 10 min

• 2008 – 2009 - different durations

Brief about Rn-222 in charcoal

mine‘s in B&H – 1 (cont‘d)

• Open-pits (4) & caves (5) – grid & „full operation“

Brief about Rn-222 in charcoal mine‘s in B&H – 2

Important parts and conclusions:

• Results within or below the limits

• Ventilation

• Type of charcoal

• RAC in mine‘s with Alpha Guard higher during new

exploitation

Brief about Rn-222 in charcoal

mine‘s in B&H – 2 (cont‘d)Important parts and

conclusions:

• „Control points“ near mining

caves 37 ± 8 Bq/m3 - 63 ±

13 Bq/m3

• Type of building materials

• Estimated annual effective

dose (for 8 hours/day)

within the limits

• The highest 0,572 mSv/yr

(cave – „Đurđevik“)

Reminder

• Draft on NORM – Articles on Rn-222

• Still 1000 Bq/m3 300 Bq/m3

• 2 TCO‘s authorized & some research based investigation

• Radon action plan (2018)

• IPA 2011 – EU BSS 2013/53/EURATOM & EU DWD

2013/51/EURATOM

Thank you!

Questions?