Role of Environmental Protection Agency in organisation and realisation of Radiological Monitoring i

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Role of Environmental Protection Agency in
organisation and realisation of Radiological
Monitoring in Lithuania

• Prepared by B. Vilimaite-ilobritiene and
  G.Berlinskas, Radiology Division (EPA)

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(No Transcript)
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Radiology 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

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Cooperation with other institutions
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Activity 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

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Activity 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)

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Activity 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

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Automatic 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)

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Automatic gamma monitoring network (continued)
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Monitoring of precipitation

• Total beta
• Sr-90
• Be-7
• Cs-137

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Aerosols
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.
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Monitoring 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

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Monitoring 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

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Used 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

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Plans 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)