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RADIATION PROTECTION DOSIMETRY DOSIMETRY SERVICE

Radiation Protection Dosimetry - Home - …...The dosimetry service Seibersdorf is an accredited testing laborato ry for ionising radiation and radiation protection providing area

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Page 1: Radiation Protection Dosimetry - Home - …...The dosimetry service Seibersdorf is an accredited testing laborato ry for ionising radiation and radiation protection providing area

RADIATION PROTECTION DOSIMETRYDOSIMETRY SERVICESe

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Page 2: Radiation Protection Dosimetry - Home - …...The dosimetry service Seibersdorf is an accredited testing laborato ry for ionising radiation and radiation protection providing area

RADIATION PROTECTION DOSIMETRY | DOSIMETRY SERVICE

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AREA AND ENVIRONMENTAL DOSEMETER SEIBERSDORF

The dosimetry service Seibersdorf is an accredited testing laborato-ry for ionising radiation and radiation protection providing area do-semeters for workplace monitoring (TLD-1K-V4) and environmental monitoring (TLD-2K-V4).

Our passive thermoluminescent dosemeters (TLDs) are routinely used for long-term surveillance of exposure limits according Austri-an, European and International radiation protection safety standards.

Dosemeter development and performance optimization are based on Monte Carlo simulations and verification measurements (Radiation Measurements 43, 2008) and international standards (IEC 62387, DIN 25483).

The area dosemeter is trademarked as a registered Community de-sign (OHIM 371190 11/07/2005).

PERFORMANCE CHARACTERISTICS

• measurement of external X-ray and gamma radiation in terms of ambient dose equivalent H*(10)

• dose range 50 μSv to10 Sv with standard measurement peri-ods of three months

• optimized radiation energy range beyond 30 keV to 7 MeV for all angles of radiation incidence

• inherent secondary electron equilibrium up to several MeV for high energy photon radiation detection

• high measurement accuracy by using TLD detector chips on a detector card protected by a water-tight envelope foil

• robust construction with an inner plastic casing and an Alumi-nium protection cap

• optionally standing or hanging positioning on specified mea-surement sites

• excellent performance results at the PTB intercomparisons 2005-2007 and 2011/2012 and the EURADOS intercomparison 2014

Monte Carlo computer simulation model of the area dosemeter Seibersdorf

Page 3: Radiation Protection Dosimetry - Home - …...The dosimetry service Seibersdorf is an accredited testing laborato ry for ionising radiation and radiation protection providing area

AREA DOSEMETER Registered Community Design

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AREA DOSEMETER DESIGN

The cylindrical area dosemeter Seibersdorf consists of a powder-coated aluminium protection cap and an inner plastic casing with a central slit. Both parts can be combined and secured by a simple cable tie or an official seal. Main items of the area dosemeter as used and tested by the Dosimetry Service Seibersdorf are coded de-tection cards containing lithium fluoride TLD chips. One or two cards are centred within the dosemeter and protected against humidity and contamination by an envelope foil.

• Outer Dimensions: 60 mm diameter, 63 mm height• Inner slit dimensions: 32 mm x 5 mm x 50 mm• Reference point: geometrical centre, not marked• Reference direction: seal towards source• Reference radiation quality: S-Cs gamma radiation (ISO 4037)

TLD AREA DOSIMETRY

Thermoluminescent dosimetry (TLD) is one of the most reliable me-thods for detecting ionising radiation covering a wide dose range and measurement periods of several months. In contrast to personal monitoring, area dosemeter measurements are related to fixed measurement sites assessing potential exposure to individuals. Accurate determination of ambient dose equivalent within restricted areas or in their environment allows safeguarding or improving radiation protection policy.

Ambient dose equivalent (unit microsievert µSv) results include con-tributions due to natural background radiation and transport, which may be taken into account by the user. Analysis of provided average ambient dose equivalent rates (unit µSv/h) allows comparisons to previous measurement results and exposure limits and estimations of annual dose values.

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DOSIMETRY SERVICE SEIBERSDORF

The monitoring service of the Seibersdorf Laboratories offers an ex-tensive radiation safety programme for our costumers from medical professions, industry, emergency organizations und research insti-tutions. Our highest quality standards are based on many years of experience as one of the first European services using continuously improved and extended thermoluminescent dosemeters.

Components of the area dosemeter Seibersdorf

0,30,40,50,60,70,80,91,01,11,21,31,41,51,61,71,81,92,02,1

10 100 1000 10000

R(E

, αα αα) /

R0(

Cs,

0°) T

LD-1

K-V

4

Eave (keV)

0°30°-75°90° angle of radiation incidence

IEC upper limit 75°-90°

IEC lower limit 0°-75°

IEC upper limit 0°-75°

IEC lower limit 75°-90°

Combined energy and angular response of the TLD-1K-V4

TLD-2K-V4 used for environmental monitoring

ISO 9001 certifiedISO/IEC 17025 accreditedapproved by the Federal Office

of Metrology and Surveying

Page 4: Radiation Protection Dosimetry - Home - …...The dosimetry service Seibersdorf is an accredited testing laborato ry for ionising radiation and radiation protection providing area

CONTACTSeibersdorf Labor GmbH

Radiation Protection DosimetryDOSIMETRY SERVICE

2444 Seibersdorf, Austria

www.seibersdorf-laboratories.at/dosimeterserviceFax: +43 (0) 50550 - 3001

DOSIMETRY SERVICESecretary

+43 (0) 50550 - [email protected]

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