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Annex to the Accreditation Certificate LP-022

Type of scope:  flexible (possibility of implementig minor modifications of the method)*
Mesto izvajanja:  in the  laboratory
Testing fields with reference to the type of test: radiochemistry, radiation (alfa, beta, gamma spectrometry, radiation protection measurements)
Testing fields with reference to the type of test item: environment and samples from the environment (waters); foodstuffs (water); biological samples (clinical and pathological samples)

 

No. Reference to standard or non-standard testing method Title of standard or non-standard testing method and eventual relations to other standards or me¬thods Range of testing; Uncertainty of the result of testing (where relevant) Materials; products
1. LSC-DN-07 / ver. 06 (Dec. 2017)**
in-house method
Liquid scintilation spectrometry for tritium determination:
- direct method
- electrolytical enrichment method
direct method, water samples
(1000 – 5000) Bq/m3
uncertainty (k=1) ≥ 10 %
≥ 5000 Bq/m3
uncertainty (k=1) ≥ 3 %

direct method, urine samples
(7200 – 50.000) Bq/m3
uncertainty (k=1) ≥ 10 %
≥ 50.000 Bq/m3
uncertainty (k=1) ≥ 3 %

method with electrolytical enrichment, water samples
(50 – 1000) Bq/m3
uncertainty (k=1) ≥ 10 %
≥1000 Bq/m3
uncertainty (k=1) ≥ 3 %
direct method:
water, urine


method with electrolitic enrichment:
water
2.LSC-DN-10 / Ver. 02 (Jan. 2016)
in-house method
Liquid scintillation spectrometry
to determine the total activity of α and β emitters in water
- Direct method
- Method of concentrating

direct method

MDC:

α emitters: 0,042 Bq/kg (or Bq/L)

β emitters: 0,44 Bq/kg (or Bq/L)

 

uncertainty (k=1):

0,042 - 1 Bq/kg (or Bq/L) (α emitters): > 10%

0,44 - 10 Bq/kg (ali Bq/L) (β emitters): > 10%

≥ 0,1 Bq/kg (or Bq/L) (α emitters): > 2,5%

≥ 10 Bq/kg (or Bq/L) (β emitters): > 3,5 %

 

method with concentration of the sample, initial mass 50 - 200 g

MDC:

α emitters: 0,005 Bq/kg (or Bq/L)

β emitters: 0,05 Bq/kg (or Bq/L)

 

uncertainty (k=1):

0,005 - 0,13 Bq/kg (or Bq/L) (α emitters): > 10 %

0,05 - 0,5 Bq/kg (or Bq/L) (β emitters): > 10%

≥ 0,13 Bq/kg (or Bq/L) (α emitters): > 2,5%

≥ 0,5 Bq/kg (or Bq/L) (β emitters): > 3,5%

 

method with concentration of the sample, initial mass 200 - 1500 g

MDC:

α emitters: 0,0013 Bq/kg (or Bq/L)

β emitters: 0,014 Bq/kg (or Bq/L)

 

uncertainty (k=1):

0,0013 - 0,03 Bq/kg (or Bq/L) (α emitters): > 10 %

0,014 - 0,3 Bq/kg (or Bq/L) (β emitters): > 10%

≥  0,03 Bq/kg (or Bq/L) (α emitters): > 2,5%

≥  0,3 Bq/kg (or Bq/L) (β emitters): > 3,5%

 

method with concentration of the sample, initial mass > 1500 g

MDC:

α emitters: 0,00017 Bq/kg (or Bq/L)

β emitters : 0,0018 Bq/kg (or Bq/L)

 

uncertainty (k=1):

0,00017 - 0,004 Bq/kg (or Bq/L) (α emitters): > 10%

0,0018 - 0,04 Bq/kg (or Bq/L) (β emitters): > 10%

≥ 0,004 Bq/kg (or Bq/L) (α emitters): > 2,5%

≥ 0,04 Bq/kg (or Bq/L) (β emitters): > 3,5%

water

* Laboratory can implement minor modifications of the method as necessary (e.g. adaptation to the new version). Detailes on the actual state of the scope is maintained by the laboratory.

** Complete reevaluation of the tritium activity calculation was performed, including determination of characteristic limits and other parameters based on the standard ISO 11929.  

Accreditations
NDS - Laboratory for Dosimetry Standards
LMR - Laboratory for Radioactivity Measurements
TLD - Laboratory for Thermoluminiscent Dosimetry
ELME - Ecological laboratory with mobile unit
LSC - Laboratory for liquid scintillation spectrometry

Updated: 28-12-2017