Radio Chemistry Estimated Results Check

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Radio Chemistry Estimated Results Check

The DQM Check for Radio Chemistry Estimated Results checks for radio chemistry sample results between the minimum detectable concentration and the decision level concentration.

 

Check

 

Check name is EarthSoft.DQM.RadChemEstimatedResults = Radiochemistry Estimated results.
 

Parameters

 

This check uses the REPORTABLE_RESULT and RESULT_TYPE_CODE parameters from Global Parameters.

 

Rules

 

There are two rules:

1.MDC < RESULT < 3*MDC.

2.MDC < RESULT < 3*TPU(1 sigma).

 

Qualify a result with the first rule if, in DT_RESULT:

MINIMUM_DETECTABLE_CONC < RESULT_NUMERIC < 3 x MINIMUM_DETECTABLE_CONC.

 

Qualify a result with the second rule if, in DT_RESULT:

MINIMUM_DETECTABLE_CONC < RESULT_NUMERIC < 3 x TPU(1 sigma),

where TPU(1 sigma) = RESULT_ERROR_DELTA if UNCERTAINTY = "1 sigma", or

where TPU(1 sigma) = RESULT_ERROR_DELTA / 1.96 if UNCERTAINTY = "2 sigma".

 

Errors

 

In the Errors tab of the DQM Event Review Form these errors may be listed:

 

1."One of the required rules for this check is not present in the RT_DQM_RULE table."
If you receive this error, the QAPP can be updated following the How to Update Existing QAPPs documentation page.

2."{FIELDNAME} is NOT Numeric! So, Estimated Result check cannot be completed for Sample, Method, CAS_RN"

3."The UNCERTAINTY value of {0} is neither 1 sigma nor 2 sigma."
If you receive this error, the check will be skipped.

 

This check will only qualify records where MINIMUM_DETECTABLE_CONC, RESULT_ERROR_DELTA, and UNCERTAINTY are not NULL.