Programas de
Radon en Irlanda
Tony Colgan
Principal Scientific Officer
Radiological Protection Institute
of Ireland
Radiological Protection
Institute of Ireland
Consejo
de Administracion
Director General
Radioactividad en
el Medio
Ambiente
Fuentes de
Radioactividad
NORM
Radon
Laboratorio Medioambiental
Politica de Sellafield, OSPAR, UNCLOS, etc.
Emergencias,
Dosimetria, Informatica
Programa de Radon en
Irlanda
•
•
•
•
Viviendas
Colegios
Puestos de Trabajo
Varios Otros Iniciativos
Niveles de Referencia
Viviendas
200 Bq/m3
Puestos de Trabajo
400 Bq/m3
Colegios
200 Bq/m3
• 200 – 400 Bq/m3
• > 400 Bq/m3
Ventilacion
Sumideros
Reconocimiento Nacional
1985 – 1989
1300 viviendas
Distribucion :
log normal
3 – 1700 Bq/m3
Valor mediana :
31 Bq/m3
4% encima de 200 Bq/m3 (nacional)
11% encima de 200 Bq/m3 (Galway/Mayo)
Zona de
caliza
U C D P o p u la tio n W e ig h te d S u rve y
1%
16%
14%
7%
4%
10%
6%
1%
7%
3%
13%
4%
10%
4%
12%
4%
4%
1 3 0 0 H o u ses
M ea n 6 0 B q m - 3
R a n g e 2 - 1 7 3 9 B q m -3
West of Ireland Survey
1755 Houses
Max: 2399 Bq/m3
Avg. GSD: 2.40
Salthill Mean: 213 Bq/m3
Irish National Grid
Responses to Invitations
Galway
Mayo
Clare
Limerick
Tipperary
Kerry
Cork
Wexford
Carlow
Laois
Kildare
Westmeath
Offaly
Meath
Longford
Cavan
Monaghan
Louth
Donegal
Leitrim
Sligo
Roscommon
Kilkenny
Waterford
Wicklow
Dublin
0
10
20
Percentage
30
40
Household Responses
60000
55769
50000
40000
30000
14763
20000
12649
11319
10000
0
Invitations
Accepted
Returned
Valid
Summary of Results
11,319 Houses (1 in 93)
993 Houses >200 Bqm-3
Min 10 Bqm-3
Max 1924 Bqm-3
Mean 89 Bqm-3
GSD 2.40
Radon Map
Le ge n d
> 20 %
5 - 10 %
10 - 2 0%
1 - 5%
< 1%
In suffic ie nt
D ata
Mean Indoor Radon Levels
Leitrim
Cavan
Monaghan
Offaly
Donegal
Kerry
Dublin
Longford
Cork
Limerick
Tipperary
Laois
Clare
Kildare
Roscommon
Westmeath
Wexford
Kilkenny
Mayo
Meath
Galway
Louth
Waterford
Carlow
Wicklow
Sligo
0
50
100
150
Distribution of Radon Levels
F
r
e
q
u
e
n
c
y
Radon Concentration
July 1999
10 30 50 70 90
120
150 180 210 240 270 300 330
360 390 420 450
Smoothed Geometric Means
10 30 50 70 90 110
140
170
200
230
260
290
320
350
Colegios
1998 – 2001
3,433 colegios (>85% del total)
33,517 aulas
6 – 4948 Bq/m3
26%
9%
1+ aula > 200 Bq/m3
1+ aula > 400 Bq/m3
Radon Survey in Schools
1998 - 99
1999 - 00
2000 - 01
Distribution of Maximum Radon Concentrations in
Irish Schools
Number of Schools
3000
2538
2500
2000
1500
1000
588
500
240
66
0
< 200
200-400
400-1000
>1000
Highest radon measurement per school (Bq/m 3)
Classroom 4 (468 Bq/m3)
600
500
Radon Concentration
400
300
200
100
0
09/03/00
10/03/00
Fri
11/03/00
Day/Time
12/03/00
13/03/00
Mon
No of Detectors Issued and Measurements Completed for the
Duration of the Survey
48000
44860
No of Detectors/Measurements
44000
Detectors Issued
40000
36000
33570
Measurements Completed
32000
28000
24000
18947
20000
17055
16000
14669
11928
12000
8858
6973
8000
4000
0
Whole Survey
1998/1999
1999/2000
Survey Period
2000/2001
Annual Average Radon Levels in Phase 1 Schools
Before and After the Installation of Sub-slab
Depressurisation Systems
Before Remediation
1200
After Remediation
Mean Radon Level Bq/m
3
1400
1000
800
600
400
200
0
1
2
3
4
5
6
7
8
School No
9
10 11
12
13
Cuevas
•
•
•
•
4 Puestos de Trabajo
Dosis
20 mSv
Limitacion de Tiempo
Control de la Juventud?
Puestos de Trabajo
• 2 Reconocimientos – Zonas de
Altos Niveles
• 50% Han Contestado (2 Cartas)
• Errores en las Listas de Direcciones
• Aspectos Legales
Radon in Drinking
Water,
Co Wicklow
501-1000 Bq/l >1000 Bq/l
3%
9%
101-500 Bq/l
33%
0-100 Bq/
55%
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Programas de Radon en Irlanda