Law on Radiation Protection designates the constitutor and manager of State Registers of sources of ionizing radiation and occupational exposure.

The necessity for accountancy and control of sources and doses of workers is indicated in the Order No. 335 of the Minister of Health On the Order of Presentation of Information about Sources of Ionizing Radiation and Data about Radiation Workers to the State Register of Sources of Ionizing Radiation and Exposure of Workers, adopted on 20th July 1999.

Submission procedure of information on export and import of sources is determined by the Order No. 302 of the Minister of Health On Order of Presentation of Information about Nuclear, Radioactive Substances and Other Sources of Ionizing Radiation, Transported through Border of the Republic of Lithuania, adopted on 23 June 1999.

Management of the data and use of it, security and links with other registers in Register are implemented according to the Government resolution No. 460 and resolution No. 651 On the Establishment of the State Register of Radiation Sources and Exposure to Workers and Approval of its Statute modification (adopted on 9th may of 2007).

The order No. V-675 of the Minister of Health, adopted on 24th August 2009 On the Approval of the Procedure of Submission Data about Sources of Ionizing Radiation and Data about Radiation Workers to the State Register of Sources of Ionizing Radiation and Exposure of Workers defines the order of the accountancy and control of sources. This order instructs the licence holder on preparation of the documentation regarding workers involved in activities with sources (starting, finishing work or any change in activities) and submission of it to the Register. Required data must be submitted within 10 working days (11 attachment).

Lithuanian Hygiene Standard HN 83:2004 “Radiation Protection and Safety of outside Workers” establishes requirements for radiation protection and safety for outside workers, who are sent to other licensees to perform activities with sources in a controlled zone and are subject to exposure, when effective doses can be above 6 mSv.

 

CONTACTS
For more information, please contact specialists at RPC Licensing and State register division:

Diana Nikitina (d.nikitinaATrsc.lt )

Valdemar Jankovskij (v.jankovskijATrsc.lt)

Phone: (8 ~ 5) 2105816
Last update 22 July 2011

REGISTER DATA

The Register consists of two parts: in the part of Sources of Ionizing Radiation the data is collected on enterprises, institutions and organizations in Lithuania, that import, export, store, use sealed and unsealed sources, X-ray generators (X-ray tubes), accelerators and data on radioactive waste, transferred for interim storage (disposed), also disused X-ray equipment, accelerators and punctured (destroyed) X-ray tubes. The above mentioned data system allows tracking the movement of all sources in the country from “cradle-to-grave”, also the possibility is provided to conduct supervision and control of the safety and security of sources

Other part of data accumulated in Register is doses of occupational exposure. Data on occupational exposure is accumulated since 1992, data on occupational exposure at Ignalina NPP – since 1983. Monitoring and evaluation of occupational exposure gives information about workplace hazards and helps to find solutions on how to protect people. Purpose of Register of occupational exposure (hereinafter – Register) is to collect, register, treat and systematize, store and give data directed by law, about workers, who work with sources of ionizing radiation, professional irradiance.

The variation of number of occupational doses collected in the Register during 2008–2010 is shown in picture 1.

 

One of the most influential criteria in assessing radiation protection of workers dealing with sources or working in the vicinity of sources are doses of occupational exposure. After data analysis it can be stated, that there was no case registered in 2010, when doses of occupational exposure would exceed prescribed limits. Data regarding average values of doses for distinct occupations in 2010 are shown in table 1

 

 

Table 1. Data regarding average values of doses for distinct occupations in 2010

Type of practice, profession	Number of workers	Average individual dose in the annum, mSv
Medical institution	2908
Doctors	1245
X-ray diagnostics	366	0,13
Stomatology	380	0,08
Tomography	84	0,08
Interventional radiology and cardiology	82	1,24
Nuclear medicine	20	0,12
Radiation therapy	60	0,09
Veterinary	15	0,12
Other	238	0,30
Nurses	1477
X-ray diagnostics	831	0,11
Stomatology	161	0,09
Tomography	98	0,08
Interventional radiology and cardiology	114	0,73
Nuclear medicine	36	0,78
Radiation therapy	90	0,16
Other	117	0,36
Medical support staff	186
X-ray diagnostics	77	0,14
Interventional radiology and cardiology	24	0,24
Nuclear medicine	20	0,27
Radiation therapy	29	0,08
Other staff, overall	36	0,19
Industrial objects	2933
Nuclear industry	2683	0,19
Radiography	90	0,26
Other	19	0,04
Education and research institution	120	0,03
Other	139	0,06

 

Doses added to Register in 2010, are less then 10 mSv. The highest annual occupational dose (8,87 mSv) according to the Register data belongs to the worker of nuclear industry. The reason of occupational doses value of workers of nuclear industry decrease during last years is smaller amount of work.

In the medical field the highest doses are received by specialists of interventional radiology and cardiology similarly as in previous years due to the particularity of their work. Highest dose recorded for specialists of interventional radiology and cardiology is 7,79 mSv.

 

 

FORMS OF APPLICATION AND REPORT

According to the Order No V-675 of the Minister of Health of 24 August 2009 On the Approval of the Procedure of Submission Data about Sources of Ionizing Radiation and Data about Radiation Workers to the State Register of Sources of Ionizing Radiation and Exposure of Workers, licensees shall fill in the appropriate forms of report and present them to RPC within 10 working days:

• when new worker will start activities with sources,
• when any condition of work with sources has changed,
• when worker has finished activities with sources,

 acquired generators and accelerators,
 acquired sealed sources,
 acquired radioactive materials,
 sold sources (generators, accelerators and sealed sources)
 sold radioactive materials,
 installed/decommissioned sources(generators, accelerators and sealed sources),
 sealed sources, accepted for storage as radioactive waste.

Last update 24 August 2011