Title: Role of Environmental Protection Agency in organisation and realisation of Radiological Monitoring i
1Role of Environmental Protection Agency in
organisation and realisation of Radiological
Monitoring in Lithuania
- Prepared by B. Vilimaite-ilobritiene and
G.Berlinskas, Radiology Division (EPA)
2(No Transcript)
3Radiology division
- Functions
- Radiological monitoring according requirements of
EU directives (radioactivity of aerosols,
precipitation, water, sediments, ground, grass) - Observation of carries from other countries
- Control and monitoring of Ignalina NPP
- Estimation of tendency of fluctuations of
radionuclides activities in the environment
4Cooperation with other institutions
5Activity in 2003
- About 600 samples per year (sampling, preparing
and measuring) - 370 samples of precipitation (5 stations)
- 70 samples of aerosols (one station, every 3-5
days) - 16 samples of lake water from 6 lakes
(once/quarter) - 6 samples of lake sediments (once/year)
- 41 sample of river water from 9 rivers (once in
quarter) - 13 samples of river sediments from 12 rivers
(once/year) - 24 samples of water from the Baltic Sea and
Curonian Lagoon (once/year) - 18 samples of sediments from the Baltic Sea and
Curonian Lagoon (once/year) - 18 samples from INPP region (twice per year
water, sediments, ground, grass, leaves and
other) - Intercomparisons with laboratories from other
countries - Baltic Intercomparison 2003
- EC intercomparison programme on airborne
particulate
6Activity in 2003 (continued)
- Participating in training courses, seminars,
conferences, meetings - Lithuania without science - Lithuania without
future. Young scientist conference in Vilnius
Gediminas Technical University, Vilnius,
Lithuania - Conference Radiation protection 2003,
Vilnius, Lithuania - Radiation protection courses, Vilnius,
Lithuania - HELCOM meeting, Risoe National Laboratory,
Roskilde, Denmark - The Swedish-Baltic Training Course for
instructors, Lepanina, Estonia - Mini-seminar on radioecology and measurement
techniques, Risoe national Laboratory, Roskilde,
Denmark - Workshop on Radioecological Modelling in ARGOS,
Risoe national Laboratory, Roskilde, Denmark - EasyProteo training course, Ispra, Italy (in
the end of September) - PhD students conference in Institute of
Physics, Vilnius, Lithuania (in October)
7Activity in 2003 (continued)
- Preparing of reports
- Report on Radiology monitoring in Lithuania
2002 - Half year report on radioactivity in aerosols
(twice/year) - Reports on radioactivity levels in the Baltic
Sea and Curonian Lagoon for HELCOM - Participating in preparing of legal basis
- Preparing of corrections for new normative
documents - Preparing of normative document Determination
of Sr-90 in environment objects (till the end of
year) - Control of activity in INPP
- Checking of radiological situation in the zone
of INPP according Annual report of INPP - Additional monitoring of INPP region
- Checking and correcting of new monitoring
programme of INPP
8Automatic gamma monitoring network
- 20 gamma radiation monitoring stations
- 9 PMS (NaI detector, GM detector, rain gauge, 3
thermometers) - 2 ALNOR (GM detector)
- 9 AGIR (NaI detector)
9Automatic gamma monitoring network (continued)
10Monitoring of precipitation
- Total beta
- Sr-90
- Be-7
- Cs-137
11Aerosols
Aerosol sampling station is situated in eastern
part of Lithuania in Utena about 60 km from INPP.
Air sampler JL-900 Snow White is situated in 10
m height from ground level. Used filter material
- glass fibber filter (1?m). Fluctuation of
activity concentration of Be-7 and Cs-137 are
observed.
12Monitoring of lakes and rivers
- Cs-137 in water and sediments
- Sr-90 in water and sediments
- Pu-238, Pu-239,240 in sediments from lakes
13Monitoring of the Baltic Sea and Curonian Lagoon
- Measured parameters for water
- Salinity
- Temperature
- pH
- Measured radionuclides in water and sediments
- Cs-134
- Cs-137
- K-40
- Sr-90
14Used procedures and equipment
- Measured radionuclides
- Gamma emitters (by using high-purity Ge detectors
and spectrometry system, OXFORD and INSPECTOR) - Sr-90 (by using automatic alpha-beta system
Tesla) - Total beta (by using beta-radiometer RUB-01P)
- Pu-238, Pu-239,240 (by using alpha detectors,
Tennelec TC 256) - Procedures for samples preparing
- Double sorbent cartridge method for Cs
pretreatment Cu2Fe(CN)6 - Extraction of Y-90 (with 10 HDEHP solution) in
n-heptane toluene from dissolved ashed sample for
determination of Sr-90 in sediments - Concentrating of Sr-90 (together with Cs-137)
from 20 L of water with HCl, SrCl2, CsCl, FeCl3,
CaCl2, K4Fe(CN)6, Na2CO3, adding of stable Sr as
carrier. - Separating of Pu by using of anion exchange resin
15Plans for future
- Renovation in laboratory new separate room for
spectrometry
- Starting of preparing of reports for EC
- Co-operation with other laboratories
- Accreditation of Quality System (preparing of
documents, procedures)